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// SPDX-License-Identifier: Apache-2.0
pragma solidity 0.8.21;

// ====================================================================
//             _        ______     ___   _______          _
//            / \     .' ___  |  .'   `.|_   __ \        / \
//           / _ \   / .'   \_| /  .-.  \ | |__) |      / _ \
//          / ___ \  | |   ____ | |   | | |  __ /      / ___ \
//        _/ /   \ \_\ `.___]  |\  `-'  /_| |  \ \_  _/ /   \ \_
//       |____| |____|`._____.'  `.___.'|____| |___||____| |____|
// ====================================================================
// =========================== AgoraDollar ============================
// ====================================================================

import { AgoraDollarCore, ConstructorParams, ShortStrings } from "./AgoraDollarCore.sol";

import { StorageLib } from "./proxy/StorageLib.sol";

/// @title AgoraDollar
/// @notice AgoraDollar is a digital dollar implementation
/// @author Agora
contract AgoraDollar is AgoraDollarCore {
    using StorageLib for uint256;
    using ShortStrings for *;

    /// @notice The AgoraDollar Constructor, invoked upon deployment
    /// @param _params The constructor params for AgoraDollar
    constructor(ConstructorParams memory _params) AgoraDollarCore(_params) {}

    //==============================================================================
    // External View Functions: Erc3009
    //==============================================================================

    // solhint-disable func-name-mixedcase
    /// @notice The ```TRANSFER_WITH_AUTHORIZATION_TYPEHASH``` function returns the typehash for the transfer with authorization
    function TRANSFER_WITH_AUTHORIZATION_TYPEHASH() external pure returns (bytes32) {
        return TRANSFER_WITH_AUTHORIZATION_TYPEHASH_;
    }

    /// @notice The ```RECEIVE_WITH_AUTHORIZATION_TYPEHASH``` function returns the typehash for the receive with authorization
    function RECEIVE_WITH_AUTHORIZATION_TYPEHASH() external pure returns (bytes32) {
        return RECEIVE_WITH_AUTHORIZATION_TYPEHASH_;
    }

    /// @notice The ```CANCEL_AUTHORIZATION_TYPEHASH``` function returns the typehash for the cancel authorization
    function CANCEL_AUTHORIZATION_TYPEHASH() external pure returns (bytes32) {
        return CANCEL_AUTHORIZATION_TYPEHASH_;
    }

    /// @notice The ```authorizationState``` function returns the state of the authorization nonce for a given authorizer
    /// @param _authorizer The account which is providing the authorization
    /// @param _nonce The unique nonce for the authorization
    /// @return _isNonceUsed The state of the authorization
    function authorizationState(address _authorizer, bytes32 _nonce) external view returns (bool _isNonceUsed) {
        _isNonceUsed = StorageLib.getPointerToEip3009Storage().isAuthorizationUsed[_authorizer][_nonce];
    }

    //==============================================================================
    //  External View Functions: Eip712
    //==============================================================================

    /// @notice The ```hashTypedDataV4``` function hashes the typed data according to Eip712
    /// @param _structHash The hash of the struct
    function hashTypedDataV4(bytes32 _structHash) external view returns (bytes32) {
        return _hashTypedDataV4({ structHash: _structHash });
    }

    /// @notice The ```domainSeparatorV4``` function returns the domain separator for Eip712
    function domainSeparatorV4() external view returns (bytes32) {
        return _domainSeparatorV4();
    }

    //==============================================================================
    // External View Functions: Erc2612
    //==============================================================================

    /// @notice The ```ERC2612_STORAGE_SLOT``` function returns the storage slot for Erc2612 storage
    function ERC2612_STORAGE_SLOT() external pure returns (bytes32) {
        return StorageLib.ERC2612_STORAGE_SLOT_;
    }

    /// @notice The ```nonces``` function returns the nonce for a given account according to Erc2612
    function nonces(address _account) external view returns (uint256 _nonce) {
        _nonce = StorageLib.getPointerToErc2612Storage().nonces[_account];
    }

    //==============================================================================
    // External View Functions: Erc20
    //==============================================================================

    /// @notice The ```name``` function returns the name of the token
    function name() external view returns (string memory) {
        return _name.toString();
    }

    /// @notice The ```symbol``` function returns the symbol of the token
    function symbol() external view returns (string memory) {
        return _symbol.toString();
    }

    /// @notice The ```balanceOf``` function returns the token balance of a given account
    /// @param _account The account to check the balance of
    /// @return The balance of the account
    function balanceOf(address _account) external view returns (uint256) {
        return StorageLib.getPointerToErc20CoreStorage().accountData[_account].balance;
    }

    /// @notice The ```allowance``` function returns the allowance a given owner has given to the spender
    /// @param _owner The account which is giving the allowance
    /// @param _spender The account which is being given the allowance
    /// @return The allowance the owner has given to the spender
    function allowance(address _owner, address _spender) external view returns (uint256) {
        return StorageLib.getPointerToErc20CoreStorage().accountAllowances[_owner][_spender];
    }

    /// @notice The ```totalSupply``` function returns the total supply of the token
    /// @return The total supply of the token
    function totalSupply() external view returns (uint256) {
        return StorageLib.getPointerToErc20CoreStorage().totalSupply;
    }

    /// @notice The ```isAccountFrozen``` function returns a boolean indicating if an account is frozen
    /// @param _account The account whose frozen status to check
    function isAccountFrozen(address _account) external view returns (bool) {
        return StorageLib.getPointerToErc20CoreStorage().accountData[_account].isFrozen;
    }

    /// @notice The ```accountData``` function returns Erc20 information about a given account
    /// @param _account The account to get the Erc20 information for
    /// @return The Erc20 information for the account (balance, isFrozenStatus)
    function accountData(address _account) external view returns (StorageLib.Erc20AccountData memory) {
        return StorageLib.getPointerToErc20CoreStorage().accountData[_account];
    }

    /// @notice The ```ERC20_CORE_STORAGE_SLOT``` function returns the storage slot for Erc20 storage
    function ERC20_CORE_STORAGE_SLOT() external pure returns (bytes32) {
        return StorageLib.ERC20_CORE_STORAGE_SLOT_;
    }

    //==============================================================================
    // External View Functions: AgoraDollarAccessControl
    //==============================================================================

    /// @notice The ``` getRoleData``` function returns the role data for a given role
    /// @param _roleId The role to get the data for
    /// @return The role data for the given role
    function getRoleData(bytes32 _roleId) external view returns (StorageLib.AgoraDollarAccessControlRoleData memory) {
        return StorageLib.getPointerToAgoraDollarAccessControlStorage().roleData[_roleId];
    }

    /// @notice The ```adminAddress``` function returns the address of the admin role
    /// @return The address which holds the admin role
    function adminAddress() external view returns (address) {
        return StorageLib.getPointerToAgoraDollarAccessControlStorage().roleData[ADMIN_ROLE].currentRoleAddress;
    }

    /// @notice The ```pendingAdminAddress``` function returns the pending address of the admin role
    /// @return The pending address of the admin role
    function pendingAdminAddress() external view returns (address) {
        return StorageLib.getPointerToAgoraDollarAccessControlStorage().roleData[ADMIN_ROLE].pendingRoleAddress;
    }

    /// @notice The ```minterAddress``` function returns the address of the minter role
    /// @return The address which holds the minter role
    function minterAddress() external view returns (address) {
        return StorageLib.getPointerToAgoraDollarAccessControlStorage().roleData[MINTER_ROLE].currentRoleAddress;
    }

    /// @notice The ```pendingMinterAddress``` function returns the pending address of the minter role
    /// @return The pending address of the minter role
    function pendingMinterAddress() external view returns (address) {
        return StorageLib.getPointerToAgoraDollarAccessControlStorage().roleData[MINTER_ROLE].pendingRoleAddress;
    }

    /// @notice The ```burnerAddress``` function returns the address of the burner role
    /// @return The address which holds the burner role
    function burnerAddress() external view returns (address) {
        return StorageLib.getPointerToAgoraDollarAccessControlStorage().roleData[BURNER_ROLE].currentRoleAddress;
    }

    /// @notice The ```pendingBurnerAddress``` function returns the pending address of the burner role
    /// @return The pending address of the burner role
    function pendingBurnerAddress() external view returns (address) {
        return StorageLib.getPointerToAgoraDollarAccessControlStorage().roleData[BURNER_ROLE].pendingRoleAddress;
    }

    /// @notice The ```pauserAddress``` function returns the address of the pauser role
    /// @return The address which holds the pauser role
    function pauserAddress() external view returns (address) {
        return StorageLib.getPointerToAgoraDollarAccessControlStorage().roleData[PAUSER_ROLE].currentRoleAddress;
    }

    /// @notice The ```pendingPauserAddress``` function returns the pending address of the pauser role
    /// @return The pending address of the pauser role
    function pendingPauserAddress() external view returns (address) {
        return StorageLib.getPointerToAgoraDollarAccessControlStorage().roleData[PAUSER_ROLE].pendingRoleAddress;
    }

    /// @notice The ```freezerAddress``` function returns the address of the freezer role
    /// @return The address which holds the freezer role
    function freezerAddress() external view returns (address) {
        return StorageLib.getPointerToAgoraDollarAccessControlStorage().roleData[FREEZER_ROLE].currentRoleAddress;
    }

    /// @notice The ```pendingFreezerAddress``` function returns the pending address of the freezer role
    /// @return The pending address of the freezer role
    function pendingFreezerAddress() external view returns (address) {
        return StorageLib.getPointerToAgoraDollarAccessControlStorage().roleData[FREEZER_ROLE].pendingRoleAddress;
    }

    //==============================================================================
    // External View Functions: Eip712
    //==============================================================================

    /// @notice The ```eip712Domain``` function returns the Eip712 domain data
    function eip712Domain()
        external
        view
        returns (
            bytes1 _fields,
            string memory _name,
            string memory _version,
            uint256 _chainId,
            address _verifyingContract,
            bytes32 _salt,
            uint256[] memory _extensions
        )
    {
        return (
            hex"0f", // 01111
            _Eip712Name(),
            _Eip712Version(),
            block.chainid,
            address(this),
            bytes32(0),
            new uint256[](0)
        );
    }

    //==============================================================================
    // External View Functions: AgoraDollarErc1967Proxy
    //==============================================================================

    /// @notice The ```proxyAdminAddress``` function returns the address of the proxy admin
    /// @return The address of the proxy admin
    function proxyAdminAddress() external view returns (address) {
        return StorageLib.getPointerToAgoraDollarErc1967ProxyAdminStorage().proxyAdminAddress;
    }

    /// @notice The ```isMsgSenderFrozenCheckEnabled``` function returns a boolean indicating if the msg.sender frozen check is turned on
    /// @return A boolean indicating if the msg sender frozen check is true
    function isMsgSenderFrozenCheckEnabled() external view returns (bool) {
        return StorageLib.sloadImplementationSlotDataAsUint256().isMsgSenderFrozenCheckEnabled();
    }

    /// @notice The ```isTransferPaused``` function returns a boolean indicating if transfers are paused
    /// @return A boolean indicating if transfers are paused
    function isTransferPaused() external view returns (bool) {
        return StorageLib.sloadImplementationSlotDataAsUint256().isTransferPaused();
    }

    /// @notice The ```isSignatureVerificationPaused``` function returns a boolean indicating if signature verification is paused
    /// @return A boolean indicating if signature verification is paused
    function isSignatureVerificationPaused() external view returns (bool) {
        return StorageLib.sloadImplementationSlotDataAsUint256().isSignatureVerificationPaused();
    }

    /// @notice The ```isMintPaused``` function returns a boolean indicating if minting is paused
    /// @return A boolean indicating if minting is paused
    function isMintPaused() external view returns (bool) {
        return StorageLib.sloadImplementationSlotDataAsUint256().isMintPaused();
    }

    /// @notice The ```isBurnFromPaused``` function returns a boolean indicating if burnFrom is paused
    /// @return A boolean indicating if burnFrom is paused
    function isBurnFromPaused() external view returns (bool) {
        return StorageLib.sloadImplementationSlotDataAsUint256().isBurnFromPaused();
    }

    /// @notice The ```isFreezingPaused``` function returns a boolean indicating if freezing is paused
    /// @return A boolean indicating if freezing is paused
    function isFreezingPaused() external view returns (bool) {
        return StorageLib.sloadImplementationSlotDataAsUint256().isFreezingPaused();
    }

    /// @notice The ```isTransferUpgraded``` function returns a boolean indicating if the transfer function is upgraded
    /// @return A boolean indicating if the transfer function is upgraded
    function isTransferUpgraded() external view returns (bool) {
        return StorageLib.sloadImplementationSlotDataAsUint256().isTransferUpgraded();
    }

    /// @notice The ```isTransferFromUpgraded``` function returns a boolean indicating if the transferFrom function is upgraded
    /// @return A boolean indicating if the transferFrom function is upgraded
    function isTransferFromUpgraded() external view returns (bool) {
        return StorageLib.sloadImplementationSlotDataAsUint256().isTransferFromUpgraded();
    }

    /// @notice The ```isTransferWithAuthorizationUpgraded``` function returns a boolean indicating if the transferWithAuthorization function is upgraded
    /// @return A boolean indicating if the transferWithAuthorization function is upgraded
    function isTransferWithAuthorizationUpgraded() external view returns (bool) {
        return StorageLib.sloadImplementationSlotDataAsUint256().isTransferWithAuthorizationUpgraded();
    }

    /// @notice The ```isReceiveWithAuthorizationUpgraded``` function returns a boolean indicating if the receiveWithAuthorization function is upgraded
    /// @return A boolean indicating if the receiveWithAuthorization function is upgraded
    function isReceiveWithAuthorizationUpgraded() external view returns (bool) {
        return StorageLib.sloadImplementationSlotDataAsUint256().isReceiveWithAuthorizationUpgraded();
    }

    /// @notice The ```implementation``` function returns the address of the implementation contract
    /// @return The address of the implementation contract
    function implementation() external view returns (address) {
        return StorageLib.sloadImplementationSlotDataAsUint256().implementation();
    }

    //==============================================================================
    // External View Functions: StorageLib Proxy Storage Bitmasks
    //==============================================================================

    /// @notice The ```IS_MSG_SENDER_FROZEN_CHECK_ENABLED_BIT_POSITION``` function returns a uint256 with a single bit flipped which indicates the bit position
    /// @return A uint256 with a single bit flipped to 1
    function IS_MSG_SENDER_FROZEN_CHECK_ENABLED_BIT_POSITION() external pure returns (uint256) {
        return StorageLib.IS_MSG_SENDER_FROZEN_CHECK_ENABLED_BIT_POSITION_;
    }

    /// @notice The ```IS_TRANSFER_PAUSED_BIT_POSITION``` function returns a uint256 with a single bit flipped which indicates the bit position
    /// @return A uint256 with a single bit flipped to 1
    function IS_MINT_PAUSED_BIT_POSITION() external pure returns (uint256) {
        return StorageLib.IS_MINT_PAUSED_BIT_POSITION_;
    }

    /// @notice The ```IS_BURN_FROM_PAUSED_BIT_POSITION``` function returns a uint256 with a single bit flipped which indicates the bit position
    /// @return A uint256 with a single bit flipped to 1
    function IS_BURN_FROM_PAUSED_BIT_POSITION() external pure returns (uint256) {
        return StorageLib.IS_BURN_FROM_PAUSED_BIT_POSITION_;
    }

    /// @notice The ```IS_FREEZING_PAUSED_BIT_POSITION``` function returns a uint256 with a single bit flipped which indicates the bit position
    /// @return A uint256 with a single bit flipped to 1
    function IS_FREEZING_PAUSED_BIT_POSITION() external pure returns (uint256) {
        return StorageLib.IS_FREEZING_PAUSED_BIT_POSITION_;
    }

    /// @notice The ```IS_TRANSFER_PAUSED_BIT_POSITION``` function returns a uint256 with a single bit flipped which indicates the bit position
    /// @return A uint256 with a single bit flipped to 1
    function IS_TRANSFER_PAUSED_BIT_POSITION() external pure returns (uint256) {
        return StorageLib.IS_TRANSFER_PAUSED_BIT_POSITION_;
    }

    /// @notice The ```IS_SIGNATURE_VERIFICATION_PAUSED_BIT_POSITION``` function returns a uint256 with a single bit flipped which indicates the bit position
    /// @return A uint256 with a single bit flipped to 1
    function IS_SIGNATURE_VERIFICATION_PAUSED_BIT_POSITION() external pure returns (uint256) {
        return StorageLib.IS_SIGNATURE_VERIFICATION_PAUSED_BIT_POSITION_;
    }

    /// @notice The ```IS_MINT_UPGRADED_BIT_POSITION``` function returns a uint256 with a single bit flipped which indicates the bit position
    /// @return A uint256 with a single bit flipped to 1
    function IS_TRANSFER_UPGRADED_BIT_POSITION() external pure returns (uint256) {
        return StorageLib.IS_TRANSFER_UPGRADED_BIT_POSITION_;
    }

    /// @notice The ```IS_TRANSFER_FROM_UPGRADED_BIT_POSITION``` function returns a uint256 with a single bit flipped which indicates the bit position
    /// @return A uint256 with a single bit flipped to 1
    function IS_TRANSFER_FROM_UPGRADED_BIT_POSITION() external pure returns (uint256) {
        return StorageLib.IS_TRANSFER_FROM_UPGRADED_BIT_POSITION_;
    }

    /// @notice The ```IS_TRANSFER_WITH_AUTHORIZATION_UPGRADED_BIT_POSITION``` function returns a uint256 with a single bit flipped which indicates the bit position
    /// @return A uint256 with a single bit flipped to 1
    function IS_TRANSFER_WITH_AUTHORIZATION_UPGRADED_BIT_POSITION() external pure returns (uint256) {
        return StorageLib.IS_TRANSFER_WITH_AUTHORIZATION_UPGRADED_BIT_POSITION_;
    }

    /// @notice The ```IS_RECEIVE_WITH_AUTHORIZATION_UPGRADED_BIT_POSITION``` function returns a uint256 with a single bit flipped which indicates the bit position
    /// @return A uint256 with a single bit flipped to 1
    function IS_RECEIVE_WITH_AUTHORIZATION_UPGRADED_BIT_POSITION() external pure returns (uint256) {
        return StorageLib.IS_RECEIVE_WITH_AUTHORIZATION_UPGRADED_BIT_POSITION_;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.20;

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
 * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
 * case an upgrade adds a module that needs to be initialized.
 *
 * For example:
 *
 * [.hljs-theme-light.nopadding]
 * ```solidity
 * contract MyToken is ERC20Upgradeable {
 *     function initialize() initializer public {
 *         __ERC20_init("MyToken", "MTK");
 *     }
 * }
 *
 * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
 *     function initializeV2() reinitializer(2) public {
 *         __ERC20Permit_init("MyToken");
 *     }
 * }
 * ```
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
 * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() {
 *     _disableInitializers();
 * }
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Storage of the initializable contract.
     *
     * It's implemented on a custom ERC-7201 namespace to reduce the risk of storage collisions
     * when using with upgradeable contracts.
     *
     * @custom:storage-location erc7201:openzeppelin.storage.Initializable
     */
    struct InitializableStorage {
        /**
         * @dev Indicates that the contract has been initialized.
         */
        uint64 _initialized;
        /**
         * @dev Indicates that the contract is in the process of being initialized.
         */
        bool _initializing;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Initializable")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant INITIALIZABLE_STORAGE = 0xf0c57e16840df040f15088dc2f81fe391c3923bec73e23a9662efc9c229c6a00;

    /**
     * @dev The contract is already initialized.
     */
    error InvalidInitialization();

    /**
     * @dev The contract is not initializing.
     */
    error NotInitializing();

    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint64 version);

    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts.
     *
     * Similar to `reinitializer(1)`, except that in the context of a constructor an `initializer` may be invoked any
     * number of times. This behavior in the constructor can be useful during testing and is not expected to be used in
     * production.
     *
     * Emits an {Initialized} event.
     */
    modifier initializer() {
        // solhint-disable-next-line var-name-mixedcase
        InitializableStorage storage $ = _getInitializableStorage();

        // Cache values to avoid duplicated sloads
        bool isTopLevelCall = !$._initializing;
        uint64 initialized = $._initialized;

        // Allowed calls:
        // - initialSetup: the contract is not in the initializing state and no previous version was
        //                 initialized
        // - construction: the contract is initialized at version 1 (no reininitialization) and the
        //                 current contract is just being deployed
        bool initialSetup = initialized == 0 && isTopLevelCall;
        bool construction = initialized == 1 && address(this).code.length == 0;

        if (!initialSetup && !construction) {
            revert InvalidInitialization();
        }
        $._initialized = 1;
        if (isTopLevelCall) {
            $._initializing = true;
        }
        _;
        if (isTopLevelCall) {
            $._initializing = false;
            emit Initialized(1);
        }
    }

    /**
     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
     * used to initialize parent contracts.
     *
     * A reinitializer may be used after the original initialization step. This is essential to configure modules that
     * are added through upgrades and that require initialization.
     *
     * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
     * cannot be nested. If one is invoked in the context of another, execution will revert.
     *
     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
     * a contract, executing them in the right order is up to the developer or operator.
     *
     * WARNING: Setting the version to 2**64 - 1 will prevent any future reinitialization.
     *
     * Emits an {Initialized} event.
     */
    modifier reinitializer(uint64 version) {
        // solhint-disable-next-line var-name-mixedcase
        InitializableStorage storage $ = _getInitializableStorage();

        if ($._initializing || $._initialized >= version) {
            revert InvalidInitialization();
        }
        $._initialized = version;
        $._initializing = true;
        _;
        $._initializing = false;
        emit Initialized(version);
    }

    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} and {reinitializer} modifiers, directly or indirectly.
     */
    modifier onlyInitializing() {
        _checkInitializing();
        _;
    }

    /**
     * @dev Reverts if the contract is not in an initializing state. See {onlyInitializing}.
     */
    function _checkInitializing() internal view virtual {
        if (!_isInitializing()) {
            revert NotInitializing();
        }
    }

    /**
     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called
     * through proxies.
     *
     * Emits an {Initialized} event the first time it is successfully executed.
     */
    function _disableInitializers() internal virtual {
        // solhint-disable-next-line var-name-mixedcase
        InitializableStorage storage $ = _getInitializableStorage();

        if ($._initializing) {
            revert InvalidInitialization();
        }
        if ($._initialized != type(uint64).max) {
            $._initialized = type(uint64).max;
            emit Initialized(type(uint64).max);
        }
    }

    /**
     * @dev Returns the highest version that has been initialized. See {reinitializer}.
     */
    function _getInitializedVersion() internal view returns (uint64) {
        return _getInitializableStorage()._initialized;
    }

    /**
     * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.
     */
    function _isInitializing() internal view returns (bool) {
        return _getInitializableStorage()._initializing;
    }

    /**
     * @dev Returns a pointer to the storage namespace.
     */
    // solhint-disable-next-line var-name-mixedcase
    function _getInitializableStorage() private pure returns (InitializableStorage storage $) {
        assembly {
            $.slot := INITIALIZABLE_STORAGE
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/draft-IERC6093.sol)
pragma solidity ^0.8.20;

/**
 * @dev Standard ERC20 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens.
 */
interface IERC20Errors {
    /**
     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param balance Current balance for the interacting account.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC20InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC20InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     * @param allowance Amount of tokens a `spender` is allowed to operate with.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC20InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `spender` to be approved. Used in approvals.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC20InvalidSpender(address spender);
}

/**
 * @dev Standard ERC721 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC721 tokens.
 */
interface IERC721Errors {
    /**
     * @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20.
     * Used in balance queries.
     * @param owner Address of the current owner of a token.
     */
    error ERC721InvalidOwner(address owner);

    /**
     * @dev Indicates a `tokenId` whose `owner` is the zero address.
     * @param tokenId Identifier number of a token.
     */
    error ERC721NonexistentToken(uint256 tokenId);

    /**
     * @dev Indicates an error related to the ownership over a particular token. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param tokenId Identifier number of a token.
     * @param owner Address of the current owner of a token.
     */
    error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC721InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC721InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     * @param tokenId Identifier number of a token.
     */
    error ERC721InsufficientApproval(address operator, uint256 tokenId);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC721InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC721InvalidOperator(address operator);
}

/**
 * @dev Standard ERC1155 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC1155 tokens.
 */
interface IERC1155Errors {
    /**
     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param balance Current balance for the interacting account.
     * @param needed Minimum amount required to perform a transfer.
     * @param tokenId Identifier number of a token.
     */
    error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC1155InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC1155InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     * @param owner Address of the current owner of a token.
     */
    error ERC1155MissingApprovalForAll(address operator, address owner);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC1155InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC1155InvalidOperator(address operator);

    /**
     * @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.
     * Used in batch transfers.
     * @param idsLength Length of the array of token identifiers
     * @param valuesLength Length of the array of token amounts
     */
    error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/ShortStrings.sol)

pragma solidity ^0.8.20;

import {StorageSlot} from "./StorageSlot.sol";

// | string  | 0xAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA   |
// | length  | 0x                                                              BB |
type ShortString is bytes32;

/**
 * @dev This library provides functions to convert short memory strings
 * into a `ShortString` type that can be used as an immutable variable.
 *
 * Strings of arbitrary length can be optimized using this library if
 * they are short enough (up to 31 bytes) by packing them with their
 * length (1 byte) in a single EVM word (32 bytes). Additionally, a
 * fallback mechanism can be used for every other case.
 *
 * Usage example:
 *
 * ```solidity
 * contract Named {
 *     using ShortStrings for *;
 *
 *     ShortString private immutable _name;
 *     string private _nameFallback;
 *
 *     constructor(string memory contractName) {
 *         _name = contractName.toShortStringWithFallback(_nameFallback);
 *     }
 *
 *     function name() external view returns (string memory) {
 *         return _name.toStringWithFallback(_nameFallback);
 *     }
 * }
 * ```
 */
library ShortStrings {
    // Used as an identifier for strings longer than 31 bytes.
    bytes32 private constant FALLBACK_SENTINEL = 0x00000000000000000000000000000000000000000000000000000000000000FF;

    error StringTooLong(string str);
    error InvalidShortString();

    /**
     * @dev Encode a string of at most 31 chars into a `ShortString`.
     *
     * This will trigger a `StringTooLong` error is the input string is too long.
     */
    function toShortString(string memory str) internal pure returns (ShortString) {
        bytes memory bstr = bytes(str);
        if (bstr.length > 31) {
            revert StringTooLong(str);
        }
        return ShortString.wrap(bytes32(uint256(bytes32(bstr)) | bstr.length));
    }

    /**
     * @dev Decode a `ShortString` back to a "normal" string.
     */
    function toString(ShortString sstr) internal pure returns (string memory) {
        uint256 len = byteLength(sstr);
        // using `new string(len)` would work locally but is not memory safe.
        string memory str = new string(32);
        /// @solidity memory-safe-assembly
        assembly {
            mstore(str, len)
            mstore(add(str, 0x20), sstr)
        }
        return str;
    }

    /**
     * @dev Return the length of a `ShortString`.
     */
    function byteLength(ShortString sstr) internal pure returns (uint256) {
        uint256 result = uint256(ShortString.unwrap(sstr)) & 0xFF;
        if (result > 31) {
            revert InvalidShortString();
        }
        return result;
    }

    /**
     * @dev Encode a string into a `ShortString`, or write it to storage if it is too long.
     */
    function toShortStringWithFallback(string memory value, string storage store) internal returns (ShortString) {
        if (bytes(value).length < 32) {
            return toShortString(value);
        } else {
            StorageSlot.getStringSlot(store).value = value;
            return ShortString.wrap(FALLBACK_SENTINEL);
        }
    }

    /**
     * @dev Decode a string that was encoded to `ShortString` or written to storage using {setWithFallback}.
     */
    function toStringWithFallback(ShortString value, string storage store) internal pure returns (string memory) {
        if (ShortString.unwrap(value) != FALLBACK_SENTINEL) {
            return toString(value);
        } else {
            return store;
        }
    }

    /**
     * @dev Return the length of a string that was encoded to `ShortString` or written to storage using
     * {setWithFallback}.
     *
     * WARNING: This will return the "byte length" of the string. This may not reflect the actual length in terms of
     * actual characters as the UTF-8 encoding of a single character can span over multiple bytes.
     */
    function byteLengthWithFallback(ShortString value, string storage store) internal view returns (uint256) {
        if (ShortString.unwrap(value) != FALLBACK_SENTINEL) {
            return byteLength(value);
        } else {
            return bytes(store).length;
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/StorageSlot.sol)
// This file was procedurally generated from scripts/generate/templates/StorageSlot.js.

pragma solidity ^0.8.20;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```solidity
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(newImplementation.code.length > 0);
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    struct StringSlot {
        string value;
    }

    struct BytesSlot {
        bytes value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `StringSlot` with member `value` located at `slot`.
     */
    function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `StringSlot` representation of the string storage pointer `store`.
     */
    function getStringSlot(string storage store) internal pure returns (StringSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := store.slot
        }
    }

    /**
     * @dev Returns an `BytesSlot` with member `value` located at `slot`.
     */
    function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`.
     */
    function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := store.slot
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Strings.sol)

pragma solidity ^0.8.20;

import {Math} from "./math/Math.sol";
import {SignedMath} from "./math/SignedMath.sol";

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant HEX_DIGITS = "0123456789abcdef";
    uint8 private constant ADDRESS_LENGTH = 20;

    /**
     * @dev The `value` string doesn't fit in the specified `length`.
     */
    error StringsInsufficientHexLength(uint256 value, uint256 length);

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), HEX_DIGITS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `int256` to its ASCII `string` decimal representation.
     */
    function toStringSigned(int256 value) internal pure returns (string memory) {
        return string.concat(value < 0 ? "-" : "", toString(SignedMath.abs(value)));
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, Math.log256(value) + 1);
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        uint256 localValue = value;
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = HEX_DIGITS[localValue & 0xf];
            localValue >>= 4;
        }
        if (localValue != 0) {
            revert StringsInsufficientHexLength(value, length);
        }
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal
     * representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), ADDRESS_LENGTH);
    }

    /**
     * @dev Returns true if the two strings are equal.
     */
    function equal(string memory a, string memory b) internal pure returns (bool) {
        return bytes(a).length == bytes(b).length && keccak256(bytes(a)) == keccak256(bytes(b));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/cryptography/MessageHashUtils.sol)

pragma solidity ^0.8.20;

import {Strings} from "../Strings.sol";

/**
 * @dev Signature message hash utilities for producing digests to be consumed by {ECDSA} recovery or signing.
 *
 * The library provides methods for generating a hash of a message that conforms to the
 * https://eips.ethereum.org/EIPS/eip-191[EIP 191] and https://eips.ethereum.org/EIPS/eip-712[EIP 712]
 * specifications.
 */
library MessageHashUtils {
    /**
     * @dev Returns the keccak256 digest of an EIP-191 signed data with version
     * `0x45` (`personal_sign` messages).
     *
     * The digest is calculated by prefixing a bytes32 `messageHash` with
     * `"\x19Ethereum Signed Message:\n32"` and hashing the result. It corresponds with the
     * hash signed when using the https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] JSON-RPC method.
     *
     * NOTE: The `messageHash` parameter is intended to be the result of hashing a raw message with
     * keccak256, although any bytes32 value can be safely used because the final digest will
     * be re-hashed.
     *
     * See {ECDSA-recover}.
     */
    function toEthSignedMessageHash(bytes32 messageHash) internal pure returns (bytes32 digest) {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x00, "\x19Ethereum Signed Message:\n32") // 32 is the bytes-length of messageHash
            mstore(0x1c, messageHash) // 0x1c (28) is the length of the prefix
            digest := keccak256(0x00, 0x3c) // 0x3c is the length of the prefix (0x1c) + messageHash (0x20)
        }
    }

    /**
     * @dev Returns the keccak256 digest of an EIP-191 signed data with version
     * `0x45` (`personal_sign` messages).
     *
     * The digest is calculated by prefixing an arbitrary `message` with
     * `"\x19Ethereum Signed Message:\n" + len(message)` and hashing the result. It corresponds with the
     * hash signed when using the https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] JSON-RPC method.
     *
     * See {ECDSA-recover}.
     */
    function toEthSignedMessageHash(bytes memory message) internal pure returns (bytes32) {
        return
            keccak256(bytes.concat("\x19Ethereum Signed Message:\n", bytes(Strings.toString(message.length)), message));
    }

    /**
     * @dev Returns the keccak256 digest of an EIP-191 signed data with version
     * `0x00` (data with intended validator).
     *
     * The digest is calculated by prefixing an arbitrary `data` with `"\x19\x00"` and the intended
     * `validator` address. Then hashing the result.
     *
     * See {ECDSA-recover}.
     */
    function toDataWithIntendedValidatorHash(address validator, bytes memory data) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked(hex"19_00", validator, data));
    }

    /**
     * @dev Returns the keccak256 digest of an EIP-712 typed data (EIP-191 version `0x01`).
     *
     * The digest is calculated from a `domainSeparator` and a `structHash`, by prefixing them with
     * `\x19\x01` and hashing the result. It corresponds to the hash signed by the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] JSON-RPC method as part of EIP-712.
     *
     * See {ECDSA-recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32 digest) {
        /// @solidity memory-safe-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, hex"19_01")
            mstore(add(ptr, 0x02), domainSeparator)
            mstore(add(ptr, 0x22), structHash)
            digest := keccak256(ptr, 0x42)
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/math/Math.sol)

pragma solidity ^0.8.20;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    /**
     * @dev Muldiv operation overflow.
     */
    error MathOverflowedMulDiv();

    enum Rounding {
        Floor, // Toward negative infinity
        Ceil, // Toward positive infinity
        Trunc, // Toward zero
        Expand // Away from zero
    }

    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, with an overflow flag.
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
            // benefit is lost if 'b' is also tested.
            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds towards infinity instead
     * of rounding towards zero.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        if (b == 0) {
            // Guarantee the same behavior as in a regular Solidity division.
            return a / b;
        }

        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or
     * denominator == 0.
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) with further edits by
     * Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0 = x * y; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            if (denominator <= prod1) {
                revert MathOverflowedMulDiv();
            }

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator.
            // Always >= 1. See https://cs.stackexchange.com/q/138556/92363.

            uint256 twos = denominator & (0 - denominator);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also
            // works in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (unsignedRoundsUp(rounding) && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded
     * towards zero.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (unsignedRoundsUp(rounding) && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (unsignedRoundsUp(rounding) && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (unsignedRoundsUp(rounding) && 10 ** result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (unsignedRoundsUp(rounding) && 1 << (result << 3) < value ? 1 : 0);
        }
    }

    /**
     * @dev Returns whether a provided rounding mode is considered rounding up for unsigned integers.
     */
    function unsignedRoundsUp(Rounding rounding) internal pure returns (bool) {
        return uint8(rounding) % 2 == 1;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/math/SignedMath.sol)

pragma solidity ^0.8.20;

/**
 * @dev Standard signed math utilities missing in the Solidity language.
 */
library SignedMath {
    /**
     * @dev Returns the largest of two signed numbers.
     */
    function max(int256 a, int256 b) internal pure returns (int256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two signed numbers.
     */
    function min(int256 a, int256 b) internal pure returns (int256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two signed numbers without overflow.
     * The result is rounded towards zero.
     */
    function average(int256 a, int256 b) internal pure returns (int256) {
        // Formula from the book "Hacker's Delight"
        int256 x = (a & b) + ((a ^ b) >> 1);
        return x + (int256(uint256(x) >> 255) & (a ^ b));
    }

    /**
     * @dev Returns the absolute unsigned value of a signed value.
     */
    function abs(int256 n) internal pure returns (uint256) {
        unchecked {
            // must be unchecked in order to support `n = type(int256).min`
            return uint256(n >= 0 ? n : -n);
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

/// @notice Safe integer casting library that reverts on overflow.
/// @author Solady (https://github.com/vectorized/solady/blob/main/src/utils/SafeCastLib.sol)
/// @author Modified from OpenZeppelin (https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/math/SafeCast.sol)
library SafeCastLib {
    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                       CUSTOM ERRORS                        */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    error Overflow();

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*          UNSIGNED INTEGER SAFE CASTING OPERATIONS          */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    function toUint8(uint256 x) internal pure returns (uint8) {
        if (x >= 1 << 8) _revertOverflow();
        return uint8(x);
    }

    function toUint16(uint256 x) internal pure returns (uint16) {
        if (x >= 1 << 16) _revertOverflow();
        return uint16(x);
    }

    function toUint24(uint256 x) internal pure returns (uint24) {
        if (x >= 1 << 24) _revertOverflow();
        return uint24(x);
    }

    function toUint32(uint256 x) internal pure returns (uint32) {
        if (x >= 1 << 32) _revertOverflow();
        return uint32(x);
    }

    function toUint40(uint256 x) internal pure returns (uint40) {
        if (x >= 1 << 40) _revertOverflow();
        return uint40(x);
    }

    function toUint48(uint256 x) internal pure returns (uint48) {
        if (x >= 1 << 48) _revertOverflow();
        return uint48(x);
    }

    function toUint56(uint256 x) internal pure returns (uint56) {
        if (x >= 1 << 56) _revertOverflow();
        return uint56(x);
    }

    function toUint64(uint256 x) internal pure returns (uint64) {
        if (x >= 1 << 64) _revertOverflow();
        return uint64(x);
    }

    function toUint72(uint256 x) internal pure returns (uint72) {
        if (x >= 1 << 72) _revertOverflow();
        return uint72(x);
    }

    function toUint80(uint256 x) internal pure returns (uint80) {
        if (x >= 1 << 80) _revertOverflow();
        return uint80(x);
    }

    function toUint88(uint256 x) internal pure returns (uint88) {
        if (x >= 1 << 88) _revertOverflow();
        return uint88(x);
    }

    function toUint96(uint256 x) internal pure returns (uint96) {
        if (x >= 1 << 96) _revertOverflow();
        return uint96(x);
    }

    function toUint104(uint256 x) internal pure returns (uint104) {
        if (x >= 1 << 104) _revertOverflow();
        return uint104(x);
    }

    function toUint112(uint256 x) internal pure returns (uint112) {
        if (x >= 1 << 112) _revertOverflow();
        return uint112(x);
    }

    function toUint120(uint256 x) internal pure returns (uint120) {
        if (x >= 1 << 120) _revertOverflow();
        return uint120(x);
    }

    function toUint128(uint256 x) internal pure returns (uint128) {
        if (x >= 1 << 128) _revertOverflow();
        return uint128(x);
    }

    function toUint136(uint256 x) internal pure returns (uint136) {
        if (x >= 1 << 136) _revertOverflow();
        return uint136(x);
    }

    function toUint144(uint256 x) internal pure returns (uint144) {
        if (x >= 1 << 144) _revertOverflow();
        return uint144(x);
    }

    function toUint152(uint256 x) internal pure returns (uint152) {
        if (x >= 1 << 152) _revertOverflow();
        return uint152(x);
    }

    function toUint160(uint256 x) internal pure returns (uint160) {
        if (x >= 1 << 160) _revertOverflow();
        return uint160(x);
    }

    function toUint168(uint256 x) internal pure returns (uint168) {
        if (x >= 1 << 168) _revertOverflow();
        return uint168(x);
    }

    function toUint176(uint256 x) internal pure returns (uint176) {
        if (x >= 1 << 176) _revertOverflow();
        return uint176(x);
    }

    function toUint184(uint256 x) internal pure returns (uint184) {
        if (x >= 1 << 184) _revertOverflow();
        return uint184(x);
    }

    function toUint192(uint256 x) internal pure returns (uint192) {
        if (x >= 1 << 192) _revertOverflow();
        return uint192(x);
    }

    function toUint200(uint256 x) internal pure returns (uint200) {
        if (x >= 1 << 200) _revertOverflow();
        return uint200(x);
    }

    function toUint208(uint256 x) internal pure returns (uint208) {
        if (x >= 1 << 208) _revertOverflow();
        return uint208(x);
    }

    function toUint216(uint256 x) internal pure returns (uint216) {
        if (x >= 1 << 216) _revertOverflow();
        return uint216(x);
    }

    function toUint224(uint256 x) internal pure returns (uint224) {
        if (x >= 1 << 224) _revertOverflow();
        return uint224(x);
    }

    function toUint232(uint256 x) internal pure returns (uint232) {
        if (x >= 1 << 232) _revertOverflow();
        return uint232(x);
    }

    function toUint240(uint256 x) internal pure returns (uint240) {
        if (x >= 1 << 240) _revertOverflow();
        return uint240(x);
    }

    function toUint248(uint256 x) internal pure returns (uint248) {
        if (x >= 1 << 248) _revertOverflow();
        return uint248(x);
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*           SIGNED INTEGER SAFE CASTING OPERATIONS           */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    function toInt8(int256 x) internal pure returns (int8) {
        int8 y = int8(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt16(int256 x) internal pure returns (int16) {
        int16 y = int16(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt24(int256 x) internal pure returns (int24) {
        int24 y = int24(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt32(int256 x) internal pure returns (int32) {
        int32 y = int32(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt40(int256 x) internal pure returns (int40) {
        int40 y = int40(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt48(int256 x) internal pure returns (int48) {
        int48 y = int48(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt56(int256 x) internal pure returns (int56) {
        int56 y = int56(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt64(int256 x) internal pure returns (int64) {
        int64 y = int64(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt72(int256 x) internal pure returns (int72) {
        int72 y = int72(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt80(int256 x) internal pure returns (int80) {
        int80 y = int80(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt88(int256 x) internal pure returns (int88) {
        int88 y = int88(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt96(int256 x) internal pure returns (int96) {
        int96 y = int96(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt104(int256 x) internal pure returns (int104) {
        int104 y = int104(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt112(int256 x) internal pure returns (int112) {
        int112 y = int112(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt120(int256 x) internal pure returns (int120) {
        int120 y = int120(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt128(int256 x) internal pure returns (int128) {
        int128 y = int128(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt136(int256 x) internal pure returns (int136) {
        int136 y = int136(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt144(int256 x) internal pure returns (int144) {
        int144 y = int144(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt152(int256 x) internal pure returns (int152) {
        int152 y = int152(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt160(int256 x) internal pure returns (int160) {
        int160 y = int160(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt168(int256 x) internal pure returns (int168) {
        int168 y = int168(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt176(int256 x) internal pure returns (int176) {
        int176 y = int176(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt184(int256 x) internal pure returns (int184) {
        int184 y = int184(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt192(int256 x) internal pure returns (int192) {
        int192 y = int192(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt200(int256 x) internal pure returns (int200) {
        int200 y = int200(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt208(int256 x) internal pure returns (int208) {
        int208 y = int208(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt216(int256 x) internal pure returns (int216) {
        int216 y = int216(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt224(int256 x) internal pure returns (int224) {
        int224 y = int224(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt232(int256 x) internal pure returns (int232) {
        int232 y = int232(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt240(int256 x) internal pure returns (int240) {
        int240 y = int240(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt248(int256 x) internal pure returns (int248) {
        int248 y = int248(x);
        if (x != y) _revertOverflow();
        return y;
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*               OTHER SAFE CASTING OPERATIONS                */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    function toInt256(uint256 x) internal pure returns (int256) {
        if (x >= 1 << 255) _revertOverflow();
        return int256(x);
    }

    function toUint256(int256 x) internal pure returns (uint256) {
        if (x < 0) _revertOverflow();
        return uint256(x);
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                      PRIVATE HELPERS                       */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    function _revertOverflow() private pure {
        /// @solidity memory-safe-assembly
        assembly {
            // Store the function selector of `Overflow()`.
            mstore(0x00, 0x35278d12)
            // Revert with (offset, size).
            revert(0x1c, 0x04)
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

/// @notice Signature verification helper that supports both ECDSA signatures from EOAs
/// and ERC1271 signatures from smart contract wallets like Argent and Gnosis safe.
/// @author Solady (https://github.com/vectorized/solady/blob/main/src/utils/SignatureCheckerLib.sol)
/// @author Modified from OpenZeppelin (https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/cryptography/SignatureChecker.sol)
///
/// @dev Note:
/// - The signature checking functions use the ecrecover precompile (0x1).
/// - The `bytes memory signature` variants use the identity precompile (0x4)
///   to copy memory internally.
/// - Unlike ECDSA signatures, contract signatures are revocable.
/// - As of Solady version 0.0.134, all `bytes signature` variants accept both
///   regular 65-byte `(r, s, v)` and EIP-2098 `(r, vs)` short form signatures.
///   See: https://eips.ethereum.org/EIPS/eip-2098
///   This is for calldata efficiency on smart accounts prevalent on L2s.
///
/// WARNING! Do NOT use signatures as unique identifiers:
/// - Use a nonce in the digest to prevent replay attacks on the same contract.
/// - Use EIP-712 for the digest to prevent replay attacks across different chains and contracts.
///   EIP-712 also enables readable signing of typed data for better user safety.
/// This implementation does NOT check if a signature is non-malleable.
library SignatureCheckerLib {
    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*               SIGNATURE CHECKING OPERATIONS                */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Returns whether `signature` is valid for `signer` and `hash`.
    /// If `signer` is a smart contract, the signature is validated with ERC1271.
    /// Otherwise, the signature is validated with `ECDSA.recover`.
    function isValidSignatureNow(address signer, bytes32 hash, bytes memory signature)
        internal
        view
        returns (bool isValid)
    {
        /// @solidity memory-safe-assembly
        assembly {
            // Clean the upper 96 bits of `signer` in case they are dirty.
            for { signer := shr(96, shl(96, signer)) } signer {} {
                let m := mload(0x40)
                mstore(0x00, hash)
                mstore(0x40, mload(add(signature, 0x20))) // `r`.
                if eq(mload(signature), 64) {
                    let vs := mload(add(signature, 0x40))
                    mstore(0x20, add(shr(255, vs), 27)) // `v`.
                    mstore(0x60, shr(1, shl(1, vs))) // `s`.
                    let t :=
                        staticcall(
                            gas(), // Amount of gas left for the transaction.
                            1, // Address of `ecrecover`.
                            0x00, // Start of input.
                            0x80, // Size of input.
                            0x01, // Start of output.
                            0x20 // Size of output.
                        )
                    // `returndatasize()` will be `0x20` upon success, and `0x00` otherwise.
                    if iszero(or(iszero(returndatasize()), xor(signer, mload(t)))) {
                        isValid := 1
                        mstore(0x60, 0) // Restore the zero slot.
                        mstore(0x40, m) // Restore the free memory pointer.
                        break
                    }
                }
                if eq(mload(signature), 65) {
                    mstore(0x20, byte(0, mload(add(signature, 0x60)))) // `v`.
                    mstore(0x60, mload(add(signature, 0x40))) // `s`.
                    let t :=
                        staticcall(
                            gas(), // Amount of gas left for the transaction.
                            1, // Address of `ecrecover`.
                            0x00, // Start of input.
                            0x80, // Size of input.
                            0x01, // Start of output.
                            0x20 // Size of output.
                        )
                    // `returndatasize()` will be `0x20` upon success, and `0x00` otherwise.
                    if iszero(or(iszero(returndatasize()), xor(signer, mload(t)))) {
                        isValid := 1
                        mstore(0x60, 0) // Restore the zero slot.
                        mstore(0x40, m) // Restore the free memory pointer.
                        break
                    }
                }
                mstore(0x60, 0) // Restore the zero slot.
                mstore(0x40, m) // Restore the free memory pointer.

                let f := shl(224, 0x1626ba7e)
                mstore(m, f) // `bytes4(keccak256("isValidSignature(bytes32,bytes)"))`.
                mstore(add(m, 0x04), hash)
                let d := add(m, 0x24)
                mstore(d, 0x40) // The offset of the `signature` in the calldata.
                // Copy the `signature` over.
                let n := add(0x20, mload(signature))
                pop(staticcall(gas(), 4, signature, n, add(m, 0x44), n))
                // forgefmt: disable-next-item
                isValid := and(
                    // Whether the returndata is the magic value `0x1626ba7e` (left-aligned).
                    eq(mload(d), f),
                    // Whether the staticcall does not revert.
                    // This must be placed at the end of the `and` clause,
                    // as the arguments are evaluated from right to left.
                    staticcall(
                        gas(), // Remaining gas.
                        signer, // The `signer` address.
                        m, // Offset of calldata in memory.
                        add(returndatasize(), 0x44), // Length of calldata in memory.
                        d, // Offset of returndata.
                        0x20 // Length of returndata to write.
                    )
                )
                break
            }
        }
    }

    /// @dev Returns whether `signature` is valid for `signer` and `hash`.
    /// If `signer` is a smart contract, the signature is validated with ERC1271.
    /// Otherwise, the signature is validated with `ECDSA.recover`.
    function isValidSignatureNowCalldata(address signer, bytes32 hash, bytes calldata signature)
        internal
        view
        returns (bool isValid)
    {
        /// @solidity memory-safe-assembly
        assembly {
            // Clean the upper 96 bits of `signer` in case they are dirty.
            for { signer := shr(96, shl(96, signer)) } signer {} {
                let m := mload(0x40)
                mstore(0x00, hash)
                if eq(signature.length, 64) {
                    let vs := calldataload(add(signature.offset, 0x20))
                    mstore(0x20, add(shr(255, vs), 27)) // `v`.
                    mstore(0x40, calldataload(signature.offset)) // `r`.
                    mstore(0x60, shr(1, shl(1, vs))) // `s`.
                    let t :=
                        staticcall(
                            gas(), // Amount of gas left for the transaction.
                            1, // Address of `ecrecover`.
                            0x00, // Start of input.
                            0x80, // Size of input.
                            0x01, // Start of output.
                            0x20 // Size of output.
                        )
                    // `returndatasize()` will be `0x20` upon success, and `0x00` otherwise.
                    if iszero(or(iszero(returndatasize()), xor(signer, mload(t)))) {
                        isValid := 1
                        mstore(0x60, 0) // Restore the zero slot.
                        mstore(0x40, m) // Restore the free memory pointer.
                        break
                    }
                }
                if eq(signature.length, 65) {
                    mstore(0x20, byte(0, calldataload(add(signature.offset, 0x40)))) // `v`.
                    calldatacopy(0x40, signature.offset, 0x40) // `r`, `s`.
                    let t :=
                        staticcall(
                            gas(), // Amount of gas left for the transaction.
                            1, // Address of `ecrecover`.
                            0x00, // Start of input.
                            0x80, // Size of input.
                            0x01, // Start of output.
                            0x20 // Size of output.
                        )
                    // `returndatasize()` will be `0x20` upon success, and `0x00` otherwise.
                    if iszero(or(iszero(returndatasize()), xor(signer, mload(t)))) {
                        isValid := 1
                        mstore(0x60, 0) // Restore the zero slot.
                        mstore(0x40, m) // Restore the free memory pointer.
                        break
                    }
                }
                mstore(0x60, 0) // Restore the zero slot.
                mstore(0x40, m) // Restore the free memory pointer.

                let f := shl(224, 0x1626ba7e)
                mstore(m, f) // `bytes4(keccak256("isValidSignature(bytes32,bytes)"))`.
                mstore(add(m, 0x04), hash)
                let d := add(m, 0x24)
                mstore(d, 0x40) // The offset of the `signature` in the calldata.
                mstore(add(m, 0x44), signature.length)
                // Copy the `signature` over.
                calldatacopy(add(m, 0x64), signature.offset, signature.length)
                // forgefmt: disable-next-item
                isValid := and(
                    // Whether the returndata is the magic value `0x1626ba7e` (left-aligned).
                    eq(mload(d), f),
                    // Whether the staticcall does not revert.
                    // This must be placed at the end of the `and` clause,
                    // as the arguments are evaluated from right to left.
                    staticcall(
                        gas(), // Remaining gas.
                        signer, // The `signer` address.
                        m, // Offset of calldata in memory.
                        add(signature.length, 0x64), // Length of calldata in memory.
                        d, // Offset of returndata.
                        0x20 // Length of returndata to write.
                    )
                )
                break
            }
        }
    }

    /// @dev Returns whether the signature (`r`, `vs`) is valid for `signer` and `hash`.
    /// If `signer` is a smart contract, the signature is validated with ERC1271.
    /// Otherwise, the signature is validated with `ECDSA.recover`.
    function isValidSignatureNow(address signer, bytes32 hash, bytes32 r, bytes32 vs)
        internal
        view
        returns (bool isValid)
    {
        /// @solidity memory-safe-assembly
        assembly {
            // Clean the upper 96 bits of `signer` in case they are dirty.
            for { signer := shr(96, shl(96, signer)) } signer {} {
                let m := mload(0x40)
                mstore(0x00, hash)
                mstore(0x20, add(shr(255, vs), 27)) // `v`.
                mstore(0x40, r) // `r`.
                mstore(0x60, shr(1, shl(1, vs))) // `s`.
                let t :=
                    staticcall(
                        gas(), // Amount of gas left for the transaction.
                        1, // Address of `ecrecover`.
                        0x00, // Start of input.
                        0x80, // Size of input.
                        0x01, // Start of output.
                        0x20 // Size of output.
                    )
                // `returndatasize()` will be `0x20` upon success, and `0x00` otherwise.
                if iszero(or(iszero(returndatasize()), xor(signer, mload(t)))) {
                    isValid := 1
                    mstore(0x60, 0) // Restore the zero slot.
                    mstore(0x40, m) // Restore the free memory pointer.
                    break
                }

                let f := shl(224, 0x1626ba7e)
                mstore(m, f) // `bytes4(keccak256("isValidSignature(bytes32,bytes)"))`.
                mstore(add(m, 0x04), hash)
                let d := add(m, 0x24)
                mstore(d, 0x40) // The offset of the `signature` in the calldata.
                mstore(add(m, 0x44), 65) // Length of the signature.
                mstore(add(m, 0x64), r) // `r`.
                mstore(add(m, 0x84), mload(0x60)) // `s`.
                mstore8(add(m, 0xa4), mload(0x20)) // `v`.
                // forgefmt: disable-next-item
                isValid := and(
                    // Whether the returndata is the magic value `0x1626ba7e` (left-aligned).
                    eq(mload(d), f),
                    // Whether the staticcall does not revert.
                    // This must be placed at the end of the `and` clause,
                    // as the arguments are evaluated from right to left.
                    staticcall(
                        gas(), // Remaining gas.
                        signer, // The `signer` address.
                        m, // Offset of calldata in memory.
                        0xa5, // Length of calldata in memory.
                        d, // Offset of returndata.
                        0x20 // Length of returndata to write.
                    )
                )
                mstore(0x60, 0) // Restore the zero slot.
                mstore(0x40, m) // Restore the free memory pointer.
                break
            }
        }
    }

    /// @dev Returns whether the signature (`v`, `r`, `s`) is valid for `signer` and `hash`.
    /// If `signer` is a smart contract, the signature is validated with ERC1271.
    /// Otherwise, the signature is validated with `ECDSA.recover`.
    function isValidSignatureNow(address signer, bytes32 hash, uint8 v, bytes32 r, bytes32 s)
        internal
        view
        returns (bool isValid)
    {
        /// @solidity memory-safe-assembly
        assembly {
            // Clean the upper 96 bits of `signer` in case they are dirty.
            for { signer := shr(96, shl(96, signer)) } signer {} {
                let m := mload(0x40)
                mstore(0x00, hash)
                mstore(0x20, and(v, 0xff)) // `v`.
                mstore(0x40, r) // `r`.
                mstore(0x60, s) // `s`.
                let t :=
                    staticcall(
                        gas(), // Amount of gas left for the transaction.
                        1, // Address of `ecrecover`.
                        0x00, // Start of input.
                        0x80, // Size of input.
                        0x01, // Start of output.
                        0x20 // Size of output.
                    )
                // `returndatasize()` will be `0x20` upon success, and `0x00` otherwise.
                if iszero(or(iszero(returndatasize()), xor(signer, mload(t)))) {
                    isValid := 1
                    mstore(0x60, 0) // Restore the zero slot.
                    mstore(0x40, m) // Restore the free memory pointer.
                    break
                }

                let f := shl(224, 0x1626ba7e)
                mstore(m, f) // `bytes4(keccak256("isValidSignature(bytes32,bytes)"))`.
                mstore(add(m, 0x04), hash)
                let d := add(m, 0x24)
                mstore(d, 0x40) // The offset of the `signature` in the calldata.
                mstore(add(m, 0x44), 65) // Length of the signature.
                mstore(add(m, 0x64), r) // `r`.
                mstore(add(m, 0x84), s) // `s`.
                mstore8(add(m, 0xa4), v) // `v`.
                // forgefmt: disable-next-item
                isValid := and(
                    // Whether the returndata is the magic value `0x1626ba7e` (left-aligned).
                    eq(mload(d), f),
                    // Whether the staticcall does not revert.
                    // This must be placed at the end of the `and` clause,
                    // as the arguments are evaluated from right to left.
                    staticcall(
                        gas(), // Remaining gas.
                        signer, // The `signer` address.
                        m, // Offset of calldata in memory.
                        0xa5, // Length of calldata in memory.
                        d, // Offset of returndata.
                        0x20 // Length of returndata to write.
                    )
                )
                mstore(0x60, 0) // Restore the zero slot.
                mstore(0x40, m) // Restore the free memory pointer.
                break
            }
        }
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                     ERC1271 OPERATIONS                     */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Returns whether `signature` is valid for `hash` for an ERC1271 `signer` contract.
    function isValidERC1271SignatureNow(address signer, bytes32 hash, bytes memory signature)
        internal
        view
        returns (bool isValid)
    {
        /// @solidity memory-safe-assembly
        assembly {
            let m := mload(0x40)
            let f := shl(224, 0x1626ba7e)
            mstore(m, f) // `bytes4(keccak256("isValidSignature(bytes32,bytes)"))`.
            mstore(add(m, 0x04), hash)
            let d := add(m, 0x24)
            mstore(d, 0x40) // The offset of the `signature` in the calldata.
            // Copy the `signature` over.
            let n := add(0x20, mload(signature))
            pop(staticcall(gas(), 4, signature, n, add(m, 0x44), n))
            // forgefmt: disable-next-item
            isValid := and(
                // Whether the returndata is the magic value `0x1626ba7e` (left-aligned).
                eq(mload(d), f),
                // Whether the staticcall does not revert.
                // This must be placed at the end of the `and` clause,
                // as the arguments are evaluated from right to left.
                staticcall(
                    gas(), // Remaining gas.
                    signer, // The `signer` address.
                    m, // Offset of calldata in memory.
                    add(returndatasize(), 0x44), // Length of calldata in memory.
                    d, // Offset of returndata.
                    0x20 // Length of returndata to write.
                )
            )
        }
    }

    /// @dev Returns whether `signature` is valid for `hash` for an ERC1271 `signer` contract.
    function isValidERC1271SignatureNowCalldata(
        address signer,
        bytes32 hash,
        bytes calldata signature
    ) internal view returns (bool isValid) {
        /// @solidity memory-safe-assembly
        assembly {
            let m := mload(0x40)
            let f := shl(224, 0x1626ba7e)
            mstore(m, f) // `bytes4(keccak256("isValidSignature(bytes32,bytes)"))`.
            mstore(add(m, 0x04), hash)
            let d := add(m, 0x24)
            mstore(d, 0x40) // The offset of the `signature` in the calldata.
            mstore(add(m, 0x44), signature.length)
            // Copy the `signature` over.
            calldatacopy(add(m, 0x64), signature.offset, signature.length)
            // forgefmt: disable-next-item
            isValid := and(
                // Whether the returndata is the magic value `0x1626ba7e` (left-aligned).
                eq(mload(d), f),
                // Whether the staticcall does not revert.
                // This must be placed at the end of the `and` clause,
                // as the arguments are evaluated from right to left.
                staticcall(
                    gas(), // Remaining gas.
                    signer, // The `signer` address.
                    m, // Offset of calldata in memory.
                    add(signature.length, 0x64), // Length of calldata in memory.
                    d, // Offset of returndata.
                    0x20 // Length of returndata to write.
                )
            )
        }
    }

    /// @dev Returns whether the signature (`r`, `vs`) is valid for `hash`
    /// for an ERC1271 `signer` contract.
    function isValidERC1271SignatureNow(address signer, bytes32 hash, bytes32 r, bytes32 vs)
        internal
        view
        returns (bool isValid)
    {
        /// @solidity memory-safe-assembly
        assembly {
            let m := mload(0x40)
            let f := shl(224, 0x1626ba7e)
            mstore(m, f) // `bytes4(keccak256("isValidSignature(bytes32,bytes)"))`.
            mstore(add(m, 0x04), hash)
            let d := add(m, 0x24)
            mstore(d, 0x40) // The offset of the `signature` in the calldata.
            mstore(add(m, 0x44), 65) // Length of the signature.
            mstore(add(m, 0x64), r) // `r`.
            mstore(add(m, 0x84), shr(1, shl(1, vs))) // `s`.
            mstore8(add(m, 0xa4), add(shr(255, vs), 27)) // `v`.
            // forgefmt: disable-next-item
            isValid := and(
                // Whether the returndata is the magic value `0x1626ba7e` (left-aligned).
                eq(mload(d), f),
                // Whether the staticcall does not revert.
                // This must be placed at the end of the `and` clause,
                // as the arguments are evaluated from right to left.
                staticcall(
                    gas(), // Remaining gas.
                    signer, // The `signer` address.
                    m, // Offset of calldata in memory.
                    0xa5, // Length of calldata in memory.
                    d, // Offset of returndata.
                    0x20 // Length of returndata to write.
                )
            )
        }
    }

    /// @dev Returns whether the signature (`v`, `r`, `s`) is valid for `hash`
    /// for an ERC1271 `signer` contract.
    function isValidERC1271SignatureNow(address signer, bytes32 hash, uint8 v, bytes32 r, bytes32 s)
        internal
        view
        returns (bool isValid)
    {
        /// @solidity memory-safe-assembly
        assembly {
            let m := mload(0x40)
            let f := shl(224, 0x1626ba7e)
            mstore(m, f) // `bytes4(keccak256("isValidSignature(bytes32,bytes)"))`.
            mstore(add(m, 0x04), hash)
            let d := add(m, 0x24)
            mstore(d, 0x40) // The offset of the `signature` in the calldata.
            mstore(add(m, 0x44), 65) // Length of the signature.
            mstore(add(m, 0x64), r) // `r`.
            mstore(add(m, 0x84), s) // `s`.
            mstore8(add(m, 0xa4), v) // `v`.
            // forgefmt: disable-next-item
            isValid := and(
                // Whether the returndata is the magic value `0x1626ba7e` (left-aligned).
                eq(mload(d), f),
                // Whether the staticcall does not revert.
                // This must be placed at the end of the `and` clause,
                // as the arguments are evaluated from right to left.
                staticcall(
                    gas(), // Remaining gas.
                    signer, // The `signer` address.
                    m, // Offset of calldata in memory.
                    0xa5, // Length of calldata in memory.
                    d, // Offset of returndata.
                    0x20 // Length of returndata to write.
                )
            )
        }
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                     HASHING OPERATIONS                     */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Returns an Ethereum Signed Message, created from a `hash`.
    /// This produces a hash corresponding to the one signed with the
    /// [`eth_sign`](https://eth.wiki/json-rpc/API#eth_sign)
    /// JSON-RPC method as part of EIP-191.
    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32 result) {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x20, hash) // Store into scratch space for keccak256.
            mstore(0x00, "\x00\x00\x00\x00\x19Ethereum Signed Message:\n32") // 28 bytes.
            result := keccak256(0x04, 0x3c) // `32 * 2 - (32 - 28) = 60 = 0x3c`.
        }
    }

    /// @dev Returns an Ethereum Signed Message, created from `s`.
    /// This produces a hash corresponding to the one signed with the
    /// [`eth_sign`](https://eth.wiki/json-rpc/API#eth_sign)
    /// JSON-RPC method as part of EIP-191.
    /// Note: Supports lengths of `s` up to 999999 bytes.
    function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32 result) {
        /// @solidity memory-safe-assembly
        assembly {
            let sLength := mload(s)
            let o := 0x20
            mstore(o, "\x19Ethereum Signed Message:\n") // 26 bytes, zero-right-padded.
            mstore(0x00, 0x00)
            // Convert the `s.length` to ASCII decimal representation: `base10(s.length)`.
            for { let temp := sLength } 1 {} {
                o := sub(o, 1)
                mstore8(o, add(48, mod(temp, 10)))
                temp := div(temp, 10)
                if iszero(temp) { break }
            }
            let n := sub(0x3a, o) // Header length: `26 + 32 - o`.
            // Throw an out-of-offset error (consumes all gas) if the header exceeds 32 bytes.
            returndatacopy(returndatasize(), returndatasize(), gt(n, 0x20))
            mstore(s, or(mload(0x00), mload(n))) // Temporarily store the header.
            result := keccak256(add(s, sub(0x20, n)), add(n, sLength))
            mstore(s, sLength) // Restore the length.
        }
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                   EMPTY CALLDATA HELPERS                   */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Returns an empty calldata bytes.
    function emptySignature() internal pure returns (bytes calldata signature) {
        /// @solidity memory-safe-assembly
        assembly {
            signature.length := 0
        }
    }
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity 0.8.21;

// ====================================================================
//             _        ______     ___   _______          _
//            / \     .' ___  |  .'   `.|_   __ \        / \
//           / _ \   / .'   \_| /  .-.  \ | |__) |      / _ \
//          / ___ \  | |   ____ | |   | | |  __ /      / ___ \
//        _/ /   \ \_\ `.___]  |\  `-'  /_| |  \ \_  _/ /   \ \_
//       |____| |____|`._____.'  `.___.'|____| |___||____| |____|
// ====================================================================
// ===================== AgoraDollarAccessControl =====================
// ====================================================================

import { StorageLib } from "./proxy/StorageLib.sol";

/// @title AgoraDollarAccessControl
/// @dev Inspired by Frax Finance's Timelock2Step contract which was inspired by OpenZeppelin's Ownable2Step contract
/// @notice An abstract contract which contains 2-step transfer and renounce logic for a privileged roles
abstract contract AgoraDollarAccessControl {
    /// @notice The ADMIN_ROLE identifier
    bytes32 public constant ADMIN_ROLE = keccak256("ADMIN_ROLE");

    /// @notice The MINTER_ROLE identifier
    bytes32 public constant MINTER_ROLE = keccak256("MINTER_ROLE");

    /// @notice The BURNER_ROLE identifier
    bytes32 public constant BURNER_ROLE = keccak256("BURNER_ROLE");

    /// @notice The PAUSER_ROLE identifier
    bytes32 public constant PAUSER_ROLE = keccak256("PAUSER_ROLE");

    /// @notice The FREEZER_ROLE identifier
    bytes32 public constant FREEZER_ROLE = keccak256("FREEZER_ROLE");

    /// @notice The RoleData struct
    /// @param pendingRoleAddress The address of the nominated (pending) role
    /// @param currentRoleAddress The address of the current role
    struct RoleData {
        address pendingRoleAddress;
        address currentRoleAddress;
    }

    function _initializeAgoraDollarAccessControl(address _initialAdminAddress) internal {
        StorageLib
            .getPointerToAgoraDollarAccessControlStorage()
            .roleData[ADMIN_ROLE]
            .currentRoleAddress = _initialAdminAddress;
    }

    // ============================================================================================
    // External Procedural Functions
    // ============================================================================================

    /// @notice The ```transferRole``` function initiates the role transfer
    /// @dev Must be called by the current role or the Admin
    /// @param _newAddress The address of the nominated (pending) role
    function transferRole(bytes32 _role, address _newAddress) external virtual {
        // Checks: Only current role or Admin can transfer role
        if (!(_isRole({ _role: _role, _address: msg.sender }) || _isRole({ _role: ADMIN_ROLE, _address: msg.sender })))
            revert AddressIsNotRole({ role: _role });

        // Effects: update pendingRole
        _setPendingRoleAddress({ _role: _role, _newAddress: _newAddress });
    }

    /// @notice The ```acceptTransferRole``` function completes the role transfer
    /// @dev Must be called by the pending role
    function acceptTransferRole(bytes32 _role) external virtual {
        // Checks
        _requireSenderIsPendingRole({ _role: _role });

        // Effects update role address
        _acceptTransferRole({ _role: _role });
    }

    // ============================================================================================
    // Internal Effects Functions
    // ============================================================================================

    /// @notice The ```_transferRole``` function initiates the role transfer
    /// @dev This function is to be implemented by a public function
    /// @param _role The role to transfer
    /// @param _newAddress The address of the nominated (pending) role
    function _setPendingRoleAddress(bytes32 _role, address _newAddress) internal {
        StorageLib.getPointerToAgoraDollarAccessControlStorage().roleData[_role].pendingRoleAddress = _newAddress;
        emit RoleTransferStarted({
            role: _role,
            previousAddress: StorageLib
                .getPointerToAgoraDollarAccessControlStorage()
                .roleData[_role]
                .currentRoleAddress,
            newAddress: _newAddress
        });
    }

    /// @notice The ```_acceptTransferRole``` function completes the role transfer
    /// @dev This function is to be implemented by a public function
    /// @param _role The role identifier to transfer
    function _acceptTransferRole(bytes32 _role) internal {
        StorageLib.getPointerToAgoraDollarAccessControlStorage().roleData[_role].pendingRoleAddress = address(0);
        _setCurrentRoleAddress({ _role: _role, _newAddress: msg.sender });
    }

    /// @notice The ```_setRole``` function sets the role address
    /// @dev This function is to be implemented by a public function
    /// @param _role The role identifier to transfer
    /// @param _newAddress The address of the new role
    function _setCurrentRoleAddress(bytes32 _role, address _newAddress) internal {
        emit RoleTransferred({
            role: _role,
            previousAddress: StorageLib
                .getPointerToAgoraDollarAccessControlStorage()
                .roleData[_role]
                .currentRoleAddress,
            newAddress: _newAddress
        });
        StorageLib.getPointerToAgoraDollarAccessControlStorage().roleData[_role].currentRoleAddress = _newAddress;
    }

    // ============================================================================================
    // Internal Checks Functions
    // ============================================================================================

    /// @notice The ```_isRole``` function checks if _address is current role address
    /// @param _role The role identifier to check
    /// @param _address The address to check against the role
    /// @return Whether or not msg.sender is current role address
    function _isRole(bytes32 _role, address _address) internal view returns (bool) {
        return _address == StorageLib.getPointerToAgoraDollarAccessControlStorage().roleData[_role].currentRoleAddress;
    }

    /// @notice The ```_requireIsRole``` function reverts if _address is not current role address
    /// @param _role The role identifier to check
    /// @param _address The address to check against the role
    function _requireIsRole(bytes32 _role, address _address) internal view {
        if (!_isRole({ _role: _role, _address: _address })) revert AddressIsNotRole({ role: _role });
    }

    /// @notice The ```_requireSenderIsRole``` function reverts if msg.sender is not current role address
    /// @dev This function is to be implemented by a public function
    /// @param _role The role identifier to check
    function _requireSenderIsRole(bytes32 _role) internal view {
        _requireIsRole({ _role: _role, _address: msg.sender });
    }

    /// @notice The ```_isPendingRole``` function checks if the _address is pending role address
    /// @dev This function is to be implemented by a public function
    /// @param _role The role identifier to check
    /// @param _address The address to check against the pending role
    /// @return Whether or not _address is pending role address
    function _isPendingRole(bytes32 _role, address _address) internal view returns (bool) {
        return _address == StorageLib.getPointerToAgoraDollarAccessControlStorage().roleData[_role].pendingRoleAddress;
    }

    /// @notice The ```_requireIsPendingRole``` function reverts if the _address is not pending role address
    /// @dev This function is to be implemented by a public function
    /// @param _role The role identifier to check
    /// @param _address The address to check against the pending role
    function _requireIsPendingRole(bytes32 _role, address _address) internal view {
        if (!_isPendingRole({ _role: _role, _address: _address })) revert AddressIsNotPendingRole({ role: _role });
    }

    /// @notice The ```_requirePendingRole``` function reverts if msg.sender is not pending role address
    /// @dev This function is to be implemented by a public function
    /// @param _role The role identifier to check
    function _requireSenderIsPendingRole(bytes32 _role) internal view {
        _requireIsPendingRole({ _role: _role, _address: msg.sender });
    }

    // ============================================================================================
    // Events
    // ============================================================================================

    /// @notice The ```RoleTransferStarted``` event is emitted when the role transfer is initiated
    /// @param role The bytes32 identifier of the role that is being transferred
    /// @param previousAddress The address of the previous role
    /// @param newAddress The address of the new role
    event RoleTransferStarted(bytes32 role, address indexed previousAddress, address indexed newAddress);

    /// @notice The ```RoleTransferred``` event is emitted when the role transfer is completed
    /// @param role The bytes32 identifier of the role that was transferred
    /// @param previousAddress The address of the previous role
    /// @param newAddress The address of the new role
    event RoleTransferred(bytes32 role, address indexed previousAddress, address indexed newAddress);

    // ============================================================================================
    // Errors
    // ============================================================================================

    /// @notice Emitted when role is transferred
    /// @param role The role identifier
    error AddressIsNotRole(bytes32 role);

    /// @notice Emitted when pending role is transferred
    /// @param role The role identifier
    error AddressIsNotPendingRole(bytes32 role);
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity 0.8.21;

// solhint-disable func-name-mixedcase
// ====================================================================
//             _        ______     ___   _______          _
//            / \     .' ___  |  .'   `.|_   __ \        / \
//           / _ \   / .'   \_| /  .-.  \ | |__) |      / _ \
//          / ___ \  | |   ____ | |   | | |  __ /      / ___ \
//        _/ /   \ \_\ `.___]  |\  `-'  /_| |  \ \_  _/ /   \ \_
//       |____| |____|`._____.'  `.___.'|____| |___||____| |____|
// ====================================================================
// ========================= AgoraDollarCore ==========================
// ====================================================================

import { Initializable } from "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import { ShortString, ShortStrings } from "@openzeppelin/contracts/utils/ShortStrings.sol";

import { Eip3009 } from "./Eip3009.sol";
import { Eip712 } from "./Eip712.sol";
import { Erc20Privileged } from "./Erc20Privileged.sol";
import { Erc2612 } from "./Erc2612.sol";

import { StorageLib } from "./proxy/StorageLib.sol";

/// @notice The Constructor Params for AgoraDollarCore
/// @param name The name of the token
/// @param symbol The symbol of the token
/// @param eip712Name The name of the Eip712 domain
/// @param eip712Version The version of the Eip712 domain
/// @param proxyAddress The address of the proxy contract
struct ConstructorParams {
    string name;
    string symbol;
    string eip712Name;
    string eip712Version;
    address proxyAddress;
}

/// @title AgoraDollarCore
/// @notice The AgoraDollarCore contract is the core implementation of the Agora Dollar token
/// @author Agora
contract AgoraDollarCore is Initializable, Eip3009, Erc2612, Erc20Privileged {
    using StorageLib for uint256;
    using ShortStrings for *;

    ShortString internal immutable _name;

    ShortString internal immutable _symbol;

    uint8 public immutable decimals = 6;

    constructor(
        ConstructorParams memory _params
    ) Eip712(_params.eip712Name, _params.eip712Version, _params.proxyAddress) {
        _name = _params.name.toShortString();
        _symbol = _params.symbol.toShortString();

        // Prevent implementation from being initialized
        _disableInitializers();
    }

    /// @notice The ```_initialAdminAddress``` initializes the AgoraDollarCore and inherited contracts
    /// @dev Has a modifier to prevent reinitialization
    /// @param _initialAdminAddress The initial admin address for role-based access control
    function initialize(address _initialAdminAddress) external reinitializer(2) {
        _initializeAgoraDollarAccessControl({ _initialAdminAddress: _initialAdminAddress });
    }

    //==============================================================================
    // External stateful Functions: Erc20
    //==============================================================================

    /// The ```approve``` function is used to approve a spender to spend a certain amount of tokens on behalf of the caller
    /// @dev This function reverts on failure
    /// @param _spender The address of the spender
    /// @param _value The amount of tokens to approve for spending
    /// @return success A boolean indicating if the approval was successful
    function approve(address _spender, uint256 _value) external returns (bool) {
        _approve({ _owner: msg.sender, _spender: _spender, _value: _value });
        return true;
    }

    function transfer(address _to, uint256 _value) external returns (bool) {
        // NOTE: implemented in proxy, here to check for signature collisions
    }

    function transferFrom(address _from, address _to, uint256 _value) external returns (bool) {
        // NOTE: implemented in proxy, here to check for signature collisions
    }

    //==============================================================================
    // External Stateful Functions: Erc3009
    //==============================================================================

    function transferWithAuthorization(
        address _from,
        address _to,
        uint256 _value,
        uint256 _validAfter,
        uint256 _validBefore,
        bytes32 _nonce,
        uint8 _v,
        bytes32 _r,
        bytes32 _s
    ) external {
        // NOTE: implemented in proxy, here to check for signature collisions
    }

    function transferWithAuthorization(
        address _from,
        address _to,
        uint256 _value,
        uint256 _validAfter,
        uint256 _validBefore,
        bytes32 _nonce,
        bytes memory _signature
    ) public {
        // NOTE: implemented in proxy, here to check for signature collisions
    }

    function receiveWithAuthorization(
        address _from,
        address _to,
        uint256 _value,
        uint256 _validAfter,
        uint256 _validBefore,
        bytes32 _nonce,
        uint8 _v,
        bytes32 _r,
        bytes32 _s
    ) external {
        // NOTE: implemented in proxy, here to check for signature collisions
    }

    function receiveWithAuthorization(
        address _from,
        address _to,
        uint256 _value,
        uint256 _validAfter,
        uint256 _validBefore,
        bytes32 _nonce,
        bytes memory _signature
    ) public {
        // NOTE: implemented in proxy, here to check for signature collisions
    }

    /// @notice The ```cancelAuthorization``` function cancels an authorization nonce
    /// @dev EOA wallet signatures should be packed in the order of r, s, v
    /// @param _authorizer    Authorizer's address
    /// @param _nonce         Nonce of the authorization
    /// @param _v           ECDSA signature v value
    /// @param _r           ECDSA signature r value
    /// @param _s           ECDSA signature s value
    function cancelAuthorization(address _authorizer, bytes32 _nonce, uint8 _v, bytes32 _r, bytes32 _s) external {
        cancelAuthorization({ _authorizer: _authorizer, _nonce: _nonce, _signature: abi.encodePacked(_r, _s, _v) });
    }

    /// @notice The ```cancelAuthorization``` function cancels an authorization nonce
    /// @dev EOA wallet signatures should be packed in the order of r, s, v
    /// @param _authorizer    Authorizer's address
    /// @param _nonce         Nonce of the authorization
    /// @param _signature     Signature byte array produced by an EOA wallet or a contract wallet
    function cancelAuthorization(address _authorizer, bytes32 _nonce, bytes memory _signature) public {
        // Effects: mark the signature as used
        _cancelAuthorization({ _authorizer: _authorizer, _nonce: _nonce, _signature: _signature });
    }

    //==============================================================================
    // Contract Data Setters Functions
    //==============================================================================

    /// @notice The ```setIsMsgSenderCheckEnabled``` function sets the isMsgSenderCheckEnabled state variable
    /// @param _isEnabled The new value of the isMsgSenderCheckEnabled state variable
    function setIsMsgSenderCheckEnabled(bool _isEnabled) external {
        _requireSenderIsRole({ _role: ADMIN_ROLE });
        uint256 _contractData = StorageLib.sloadImplementationSlotDataAsUint256();
        uint256 _newContractData = _contractData.setBitWithMask({
            _bitToSet: StorageLib.IS_MSG_SENDER_FROZEN_CHECK_ENABLED_BIT_POSITION_,
            _setBitToOne: _isEnabled
        });
        _newContractData.sstoreImplementationSlotDataAsUint256();
        emit SetIsMsgSenderCheckEnabled({ isEnabled: _isEnabled });
    }

    /// @notice The ```setIsMintPaused``` function sets the isMintPaused state variable
    /// @param _isPaused The new value of the isMintPaused state variable
    function setIsMintPaused(bool _isPaused) external {
        _requireSenderIsRole({ _role: PAUSER_ROLE });
        uint256 _contractData = StorageLib.sloadImplementationSlotDataAsUint256();
        uint256 _newContractData = _contractData.setBitWithMask({
            _bitToSet: StorageLib.IS_MINT_PAUSED_BIT_POSITION_,
            _setBitToOne: _isPaused
        });
        _newContractData.sstoreImplementationSlotDataAsUint256();
        emit SetIsMintPaused({ isPaused: _isPaused });
    }

    /// @notice The ```setIsBurnFromPaused``` function sets the isBurnFromPaused state variable
    /// @param _isPaused The new value of the isBurnFromPaused state variable
    function setIsBurnFromPaused(bool _isPaused) external {
        _requireSenderIsRole({ _role: PAUSER_ROLE });
        uint256 _contractData = StorageLib.sloadImplementationSlotDataAsUint256();
        uint256 _newContractData = _contractData.setBitWithMask({
            _bitToSet: StorageLib.IS_BURN_FROM_PAUSED_BIT_POSITION_,
            _setBitToOne: _isPaused
        });
        _newContractData.sstoreImplementationSlotDataAsUint256();
        emit SetIsBurnFromPaused({ isPaused: _isPaused });
    }

    /// @notice The ```setIsFreezingPaused``` function sets the isFreezingPaused state variable
    /// @param _isPaused The new value of the isFreezingPaused state variable
    function setIsFreezingPaused(bool _isPaused) external {
        _requireSenderIsRole({ _role: PAUSER_ROLE });
        uint256 _contractData = StorageLib.sloadImplementationSlotDataAsUint256();
        uint256 _newContractData = _contractData.setBitWithMask({
            _bitToSet: StorageLib.IS_FREEZING_PAUSED_BIT_POSITION_,
            _setBitToOne: _isPaused
        });
        _newContractData.sstoreImplementationSlotDataAsUint256();
        emit SetIsFreezingPaused({ isPaused: _isPaused });
    }

    /// @notice The ```setIsTransferPaused``` function sets the isTransferPaused state variable
    /// @param _isPaused The new value of the isTransferPaused state variable
    function setIsTransferPaused(bool _isPaused) external {
        _requireSenderIsRole({ _role: PAUSER_ROLE });
        uint256 _contractData = StorageLib.sloadImplementationSlotDataAsUint256();
        uint256 _newContractData = _contractData.setBitWithMask({
            _bitToSet: StorageLib.IS_TRANSFER_PAUSED_BIT_POSITION_,
            _setBitToOne: _isPaused
        });
        _newContractData.sstoreImplementationSlotDataAsUint256();
        emit SetIsTransferPaused({ isPaused: _isPaused });
    }

    /// @notice The ```setIsSignatureVerificationPaused``` function sets the isSignatureVerificationPaused state variable
    /// @param _isPaused The new value of the isSignatureVerificationPaused state variable
    function setIsSignatureVerificationPaused(bool _isPaused) external {
        _requireSenderIsRole({ _role: PAUSER_ROLE });
        uint256 _contractData = StorageLib.sloadImplementationSlotDataAsUint256();
        uint256 _newContractData = _contractData.setBitWithMask({
            _bitToSet: StorageLib.IS_SIGNATURE_VERIFICATION_PAUSED_BIT_POSITION_,
            _setBitToOne: _isPaused
        });
        _newContractData.sstoreImplementationSlotDataAsUint256();
        emit SetIsSignatureVerificationPaused({ isPaused: _isPaused });
    }

    /// @notice The ```setIsTransferUpgraded``` function sets the isTransferUpgraded state variable
    /// @param _isUpgraded The new value of the isTransferUpgraded state variable
    function setIsTransferUpgraded(bool _isUpgraded) external {
        _requireSenderIsRole({ _role: ADMIN_ROLE });
        uint256 _contractData = StorageLib.sloadImplementationSlotDataAsUint256();
        uint256 _newContractData = _contractData.setBitWithMask({
            _bitToSet: StorageLib.IS_TRANSFER_UPGRADED_BIT_POSITION_,
            _setBitToOne: _isUpgraded
        });
        _newContractData.sstoreImplementationSlotDataAsUint256();
        emit SetIsTransferUpgraded({ isUpgraded: _isUpgraded });
    }

    /// @notice The ```setIsTransferFromUpgraded``` function sets the isTransferFromUpgraded state variable
    /// @param _isUpgraded The new value of the isTransferFromUpgraded state variable
    function setIsTransferFromUpgraded(bool _isUpgraded) external {
        _requireSenderIsRole({ _role: ADMIN_ROLE });
        uint256 _contractData = StorageLib.sloadImplementationSlotDataAsUint256();
        uint256 _newContractData = _contractData.setBitWithMask({
            _bitToSet: StorageLib.IS_TRANSFER_FROM_UPGRADED_BIT_POSITION_,
            _setBitToOne: _isUpgraded
        });
        _newContractData.sstoreImplementationSlotDataAsUint256();
        emit SetIsTransferFromUpgraded({ isUpgraded: _isUpgraded });
    }

    /// @notice The ```setIsTransferWithAuthorizationUpgraded``` function sets the isTransferWithAuthorizationUpgraded state variable
    /// @param _isUpgraded The new value of the isTransferWithAuthorizationUpgraded state variable
    function setIsTransferWithAuthorizationUpgraded(bool _isUpgraded) external {
        _requireSenderIsRole({ _role: ADMIN_ROLE });
        uint256 _contractData = StorageLib.sloadImplementationSlotDataAsUint256();
        uint256 _newContractData = _contractData.setBitWithMask({
            _bitToSet: StorageLib.IS_TRANSFER_WITH_AUTHORIZATION_UPGRADED_BIT_POSITION_,
            _setBitToOne: _isUpgraded
        });
        _newContractData.sstoreImplementationSlotDataAsUint256();
        emit SetIsTransferWithAuthorizationUpgraded({ isUpgraded: _isUpgraded });
    }

    /// @notice The ```setIsReceiveWithAuthorizationUpgraded``` function sets the isReceiveWithAuthorizationUpgraded state variable
    /// @param _isUpgraded The new value of the isReceiveWithAuthorizationUpgraded state variable
    function setIsReceiveWithAuthorizationUpgraded(bool _isUpgraded) external {
        _requireSenderIsRole({ _role: ADMIN_ROLE });
        uint256 _contractData = StorageLib.sloadImplementationSlotDataAsUint256();
        uint256 _newContractData = _contractData.setBitWithMask({
            _bitToSet: StorageLib.IS_RECEIVE_WITH_AUTHORIZATION_UPGRADED_BIT_POSITION_,
            _setBitToOne: _isUpgraded
        });
        _newContractData.sstoreImplementationSlotDataAsUint256();
        emit SetIsReceiveWithAuthorizationUpgraded({ isUpgraded: _isUpgraded });
    }

    //==============================================================================
    // Events
    //==============================================================================

    /// @notice The ```SetIsMsgSenderCheckEnabled``` event is emitted when the isMsgSenderCheckEnabled state variable is updated
    /// @param isEnabled The new value of the isMsgSenderCheckEnabled state variable
    event SetIsMsgSenderCheckEnabled(bool isEnabled);

    /// @notice The ```SetIsMintPaused``` event is emitted when the isMintPaused state variable is updated
    /// @param isPaused The new value of the isMintPaused state variable
    event SetIsMintPaused(bool isPaused);

    /// @notice The ```SetIsBurnFromPaused``` event is emitted when the isBurnFromPaused state variable is updated
    /// @param isPaused The new value of the isBurnFromPaused state variable
    event SetIsBurnFromPaused(bool isPaused);

    /// @notice The ```SetIsFreezingPaused``` event is emitted when the isFreezingPaused state variable is updated
    /// @param isPaused The new value of the isFreezingPaused state variable
    event SetIsFreezingPaused(bool isPaused);

    /// @notice The ```SetIsTransferPaused``` event is emitted when the isTransferPaused state variable is updated
    /// @param isPaused The new value of the isTransferPaused state variable
    event SetIsTransferPaused(bool isPaused);

    /// @notice The ```SetIsSignatureVerificationPaused``` event is emitted when the isSignatureVerificationPaused state variable is updated
    /// @param isPaused The new value of the isSignatureVerificationPaused state variable
    event SetIsSignatureVerificationPaused(bool isPaused);

    /// @notice The ```SetIsTransferUpgraded``` event is emitted when the isTransferUpgraded state variable is updated
    /// @param isUpgraded The new value of the isTransferUpgraded state variable
    event SetIsTransferUpgraded(bool isUpgraded);

    /// @notice The ```SetIsTransferFromUpgraded``` event is emitted when the isTransferFromUpgraded state variable is updated
    /// @param isUpgraded The new value of the isTransferFromUpgraded state variable
    event SetIsTransferFromUpgraded(bool isUpgraded);

    /// @notice The ```SetIsTransferWithAuthorizationUpgraded``` event is emitted when the isTransferWithAuthorizationUpgraded state variable is updated
    /// @param isUpgraded The new value of the isTransferWithAuthorizationUpgraded state variable
    event SetIsTransferWithAuthorizationUpgraded(bool isUpgraded);

    /// @notice The ```SetIsReceiveWithAuthorizationUpgraded``` event is emitted when the isReceiveWithAuthorizationUpgraded state variable is updated
    /// @param isUpgraded The new value of the isReceiveWithAuthorizationUpgraded state variable
    event SetIsReceiveWithAuthorizationUpgraded(bool isUpgraded);
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity 0.8.21;

// ====================================================================
//             _        ______     ___   _______          _
//            / \     .' ___  |  .'   `.|_   __ \        / \
//           / _ \   / .'   \_| /  .-.  \ | |__) |      / _ \
//          / ___ \  | |   ____ | |   | | |  __ /      / ___ \
//        _/ /   \ \_\ `.___]  |\  `-'  /_| |  \ \_  _/ /   \ \_
//       |____| |____|`._____.'  `.___.'|____| |___||____| |____|
// ====================================================================
// ============================= Eip3009 ==============================
// ====================================================================

import { MessageHashUtils } from "@openzeppelin/contracts/utils/cryptography/MessageHashUtils.sol";
import { SafeCastLib } from "solady/src/utils/SafeCastLib.sol";
import { SignatureCheckerLib } from "solady/src/utils/SignatureCheckerLib.sol";

import { Eip712 } from "./Eip712.sol";
import { Erc20Core } from "./Erc20Core.sol";

import { StorageLib } from "./proxy/StorageLib.sol";

/// @title Eip3009
/// @notice Eip3009 provides internal implementations for gas-abstracted transfers under Eip3009 guidelines
/// @author Agora, inspired by Circle's Eip3009 implementation
abstract contract Eip3009 is Eip712, Erc20Core {
    using SafeCastLib for uint256;
    using StorageLib for uint256;

    /// @notice keccak256("TransferWithAuthorization(address from,address to,uint256 value,uint256 validAfter,uint256 validBefore,bytes32 nonce)")
    bytes32 internal constant TRANSFER_WITH_AUTHORIZATION_TYPEHASH_ =
        0x7c7c6cdb67a18743f49ec6fa9b35f50d52ed05cbed4cc592e13b44501c1a2267;

    /// @notice keccak256("ReceiveWithAuthorization(address from,address to,uint256 value,uint256 validAfter,uint256 validBefore,bytes32 nonce)")
    bytes32 internal constant RECEIVE_WITH_AUTHORIZATION_TYPEHASH_ =
        0xd099cc98ef71107a616c4f0f941f04c322d8e254fe26b3c6668db87aae413de8;

    /// @notice keccak256("CancelAuthorization(address authorizer,bytes32 nonce)")
    bytes32 internal constant CANCEL_AUTHORIZATION_TYPEHASH_ =
        0x158b0a9edf7a828aad02f63cd515c68ef2f50ba807396f6d12842833a1597429;

    //==============================================================================
    // Internal Procedural Functions
    //==============================================================================

    /// @notice The ```_transferWithAuthorization``` function executes a transfer with a signed authorization
    /// @dev EOA wallet signatures should be packed in the order of r, s, v
    /// @param _from Payer's address (Authorizer)
    /// @param _to Payee's address
    /// @param _value Amount to be transferred
    /// @param _validAfter The time after which this is valid (unix time)
    /// @param _validBefore The time before which this is valid (unix time)
    /// @param _nonce Unique nonce
    /// @param _signature Signature byte array produced by an EOA wallet or a contract wallet
    function _transferWithAuthorization(
        address _from,
        address _to,
        uint256 _value,
        uint256 _validAfter,
        uint256 _validBefore,
        bytes32 _nonce,
        bytes memory _signature
    ) internal {
        // Checks: authorization validity
        if (block.timestamp <= _validAfter) revert InvalidAuthorization();
        if (block.timestamp >= _validBefore) revert ExpiredAuthorization();
        _requireUnusedAuthorization({ _authorizer: _from, _nonce: _nonce });

        // Checks: valid signature
        _requireIsValidSignatureNow({
            _signer: _from,
            _dataHash: keccak256(
                abi.encode(TRANSFER_WITH_AUTHORIZATION_TYPEHASH_, _from, _to, _value, _validAfter, _validBefore, _nonce)
            ),
            _signature: _signature
        });

        // Effects: mark authorization as used and transfer
        _markAuthorizationAsUsed({ _authorizer: _from, _nonce: _nonce });
        _transfer({ _from: _from, _to: _to, _transferValue: _value.toUint248() });
    }

    /// @notice The ```_receiveWithAuthorization``` function receives a transfer with a signed authorization from the payer
    /// @dev This has an additional check to ensure that the payee's address matches the caller of this function to prevent front-running attacks
    /// @dev EOA wallet signatures should be packed in the order of r, s, v
    /// @param _from Payer's address (Authorizer)
    /// @param _to Payee's address
    /// @param _value Amount to be transferred
    /// @param _validAfter The block.timestamp after which the authorization is valid
    /// @param _validBefore The block.timestamp before which the authorization is valid
    /// @param _nonce Unique nonce
    /// @param _signature Signature byte array produced by an EOA wallet or a contract wallet
    function _receiveWithAuthorization(
        address _from,
        address _to,
        uint256 _value,
        uint256 _validAfter,
        uint256 _validBefore,
        bytes32 _nonce,
        bytes memory _signature
    ) internal {
        // Checks: authorization validity
        if (_to != msg.sender) revert InvalidPayee({ caller: msg.sender, payee: _to });
        if (block.timestamp <= _validAfter) revert InvalidAuthorization();
        if (block.timestamp >= _validBefore) revert ExpiredAuthorization();
        _requireUnusedAuthorization({ _authorizer: _from, _nonce: _nonce });

        // Checks: valid signature
        _requireIsValidSignatureNow({
            _signer: _from,
            _dataHash: keccak256(
                abi.encode(RECEIVE_WITH_AUTHORIZATION_TYPEHASH_, _from, _to, _value, _validAfter, _validBefore, _nonce)
            ),
            _signature: _signature
        });

        // Effects: mark authorization as used and transfer
        _markAuthorizationAsUsed({ _authorizer: _from, _nonce: _nonce });
        _transfer({ _from: _from, _to: _to, _transferValue: _value.toUint248() });
    }

    /// @notice The ```_cancelAuthorization``` function cancels an authorization
    /// @dev EOA wallet signatures should be packed in the order of r, s, v
    /// @param _authorizer Authorizer's address
    /// @param _nonce Nonce of the authorization
    /// @param _signature Signature byte array produced by an EOA wallet or a contract wallet
    function _cancelAuthorization(address _authorizer, bytes32 _nonce, bytes memory _signature) internal {
        _requireUnusedAuthorization({ _authorizer: _authorizer, _nonce: _nonce });
        _requireIsValidSignatureNow({
            _signer: _authorizer,
            _dataHash: keccak256(abi.encode(CANCEL_AUTHORIZATION_TYPEHASH_, _authorizer, _nonce)),
            _signature: _signature
        });

        StorageLib.getPointerToEip3009Storage().isAuthorizationUsed[_authorizer][_nonce] = true;
        emit AuthorizationCanceled({ authorizer: _authorizer, nonce: _nonce });
    }

    //==============================================================================
    // Internal Checks Functions
    //==============================================================================

    /// @notice The ```_requireIsValidSignatureNow``` function validates that signature against input data struct
    /// @param _signer Signer's address
    /// @param _dataHash Hash of encoded data struct
    /// @param _signature Signature byte array produced by an EOA wallet or a contract wallet
    function _requireIsValidSignatureNow(address _signer, bytes32 _dataHash, bytes memory _signature) private view {
        if (
            !SignatureCheckerLib.isValidSignatureNow({
                signer: _signer,
                hash: MessageHashUtils.toTypedDataHash({
                    domainSeparator: _domainSeparatorV4(),
                    structHash: _dataHash
                }),
                signature: _signature
            })
        ) revert InvalidSignature();
    }

    /// @notice The ```_requireUnusedAuthorization``` checks that an authorization nonce is unused
    /// @param _authorizer    Authorizer's address
    /// @param _nonce         Nonce of the authorization
    function _requireUnusedAuthorization(address _authorizer, bytes32 _nonce) private view {
        if (StorageLib.getPointerToEip3009Storage().isAuthorizationUsed[_authorizer][_nonce])
            revert UsedOrCanceledAuthorization();
    }

    //==============================================================================
    // Internal Effects Functions
    //==============================================================================

    /// @notice The ```_markAuthorizationAsUsed``` function marks an authorization nonce as used
    /// @param _authorizer    Authorizer's address
    /// @param _nonce         Nonce of the authorization
    function _markAuthorizationAsUsed(address _authorizer, bytes32 _nonce) private {
        StorageLib.getPointerToEip3009Storage().isAuthorizationUsed[_authorizer][_nonce] = true;
        emit AuthorizationUsed({ authorizer: _authorizer, nonce: _nonce });
    }

    //==============================================================================
    // Events
    //==============================================================================

    /// @notice ```AuthorizationUsed``` event is emitted when an authorization is used
    /// @param authorizer Authorizer's address
    /// @param nonce Nonce of the authorization
    event AuthorizationUsed(address indexed authorizer, bytes32 indexed nonce);

    /// @notice ```AuthorizationCanceled``` event is emitted when an authorization is canceled
    /// @param authorizer Authorizer's address
    /// @param nonce Nonce of the authorization
    event AuthorizationCanceled(address indexed authorizer, bytes32 indexed nonce);

    //==============================================================================
    // Errors
    //==============================================================================

    /// @notice The ```InvalidPayee``` error is emitted when the payee does not match sender in receiveWithAuthorization
    /// @param caller The caller of the function
    /// @param payee The expected payee in the function
    error InvalidPayee(address caller, address payee);

    /// @notice The ```InvalidAuthorization``` error is emitted when the authorization is invalid because its too early
    error InvalidAuthorization();

    /// @notice The ```ExpiredAuthorization``` error is emitted when the authorization is expired
    error ExpiredAuthorization();

    /// @notice The ```InvalidSignature``` error is emitted when the signature is invalid
    error InvalidSignature();

    /// @notice The ```UsedOrCanceledAuthorization``` error is emitted when the authorization nonce is already used or canceled
    error UsedOrCanceledAuthorization();
}

// SPDX-License-Identifier: Apache-2.0

// ***NOTE***: This file has been modified to remove external functions and storage for use in a transparent-ish proxy
// ***NOTE***: Modified from https://github.com/OpenZeppelin/openzeppelin-contracts/blob/dbb6104ce834628e473d2173bbc9d47f81a9eec3/contracts/utils/cryptography/EIP712.sol

pragma solidity 0.8.21;

// ====================================================================
//             _        ______     ___   _______          _
//            / \     .' ___  |  .'   `.|_   __ \        / \
//           / _ \   / .'   \_| /  .-.  \ | |__) |      / _ \
//          / ___ \  | |   ____ | |   | | |  __ /      / ___ \
//        _/ /   \ \_\ `.___]  |\  `-'  /_| |  \ \_  _/ /   \ \_
//       |____| |____|`._____.'  `.___.'|____| |___||____| |____|
// ====================================================================
// ============================= Eip712 ===============================
// ====================================================================

import { ShortString, ShortStrings } from "@openzeppelin/contracts/utils/ShortStrings.sol";
import { MessageHashUtils } from "@openzeppelin/contracts/utils/cryptography/MessageHashUtils.sol";

/**
 * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
 *
 * The encoding scheme specified in the EIP requires a domain separator and a hash of the typed structured data, whose
 * encoding is very generic and therefore its implementation in Solidity is not feasible, thus this contract
 * does not implement the encoding itself. Protocols need to implement the type-specific encoding they need in order to
 * produce the hash of their typed data using a combination of `abi.encode` and `keccak256`.
 *
 * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
 * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
 * ({_hashTypedDataV4}).
 *
 * The implementation of the domain separator was designed to be as efficient as possible while still properly updating
 * the chain id to protect against replay attacks on an eventual fork of the chain.
 *
 * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
 * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
 *
 */

/// @title Eip712
/// @author Agora, modified from OpenZeppelin implementation
abstract contract Eip712 {
    using ShortStrings for *;

    bytes32 private constant TYPE_HASH =
        keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)");

    // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to
    // invalidate the cached domain separator if the chain id changes.
    bytes32 private immutable _cachedDomainSeparator;
    uint256 private immutable _cachedChainId;
    address private immutable _cachedThis;

    bytes32 private immutable _hashedName;
    bytes32 private immutable _hashedVersion;

    ShortString private immutable _name;
    ShortString private immutable _version;

    /**
     * @dev Initializes the domain separator and parameter caches.
     *
     * The meaning of `name` and `version` is specified in
     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
     *
     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
     * - `version`: the current major version of the signing domain.
     */
    constructor(string memory name, string memory version, address expectedProxyAddress) {
        _name = name.toShortString();
        _version = version.toShortString();
        _hashedName = keccak256(bytes(name));
        _hashedVersion = keccak256(bytes(version));

        _cachedChainId = block.chainid;
        _cachedDomainSeparator = keccak256(
            abi.encode(TYPE_HASH, _hashedName, _hashedVersion, block.chainid, expectedProxyAddress)
        );
        _cachedThis = expectedProxyAddress;
    }

    /// @dev Returns the domain separator for the current chain
    function _domainSeparatorV4() internal view returns (bytes32) {
        if (address(this) == _cachedThis && block.chainid == _cachedChainId) return _cachedDomainSeparator;
        else return _buildDomainSeparator();
    }

    function _buildDomainSeparator() private view returns (bytes32) {
        return keccak256(abi.encode(TYPE_HASH, _hashedName, _hashedVersion, block.chainid, address(this)));
    }

    /**
     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
     * function returns the hash of the fully encoded EIP712 message for this domain.
     *
     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
     *
     * ```solidity
     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
     *     keccak256("Mail(address to,string contents)"),
     *     mailTo,
     *     keccak256(bytes(mailContents))
     * )));
     * address signer = ECDSA.recover(digest, signature);
     * ```
     */
    function _hashTypedDataV4(bytes32 structHash) internal view returns (bytes32) {
        return MessageHashUtils.toTypedDataHash({ domainSeparator: _domainSeparatorV4(), structHash: structHash });
    }

    /**
     * @dev The name parameter for the Eip712 domain.
     *
     * NOTE: By default this function reads _name which is an immutable value.
     * It only reads from storage if necessary (in case the value is too large to fit in a ShortString).
     */
    // solhint-disable-next-line func-name-mixedcase
    function _Eip712Name() internal view returns (string memory) {
        return _name.toString();
    }

    /**
     * @dev The version parameter for the Eip712 domain.
     *
     * NOTE: By default this function reads _version which is an immutable value.
     * It only reads from storage if necessary (in case the value is too large to fit in a ShortString).
     */
    // solhint-disable-next-line func-name-mixedcase
    function _Eip712Version() internal view returns (string memory) {
        return _version.toString();
    }
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity 0.8.21;

// ====================================================================
//             _        ______     ___   _______          _
//            / \     .' ___  |  .'   `.|_   __ \        / \
//           / _ \   / .'   \_| /  .-.  \ | |__) |      / _ \
//          / ___ \  | |   ____ | |   | | |  __ /      / ___ \
//        _/ /   \ \_\ `.___]  |\  `-'  /_| |  \ \_  _/ /   \ \_
//       |____| |____|`._____.'  `.___.'|____| |___||____| |____|
// ====================================================================
// ============================ Erc20Core =============================
// ====================================================================

import { IERC20Errors as IErc20Errors } from "@openzeppelin/contracts/interfaces/draft-IErc6093.sol";
import { SafeCastLib } from "solady/src/utils/SafeCastLib.sol";

import { StorageLib } from "./proxy/StorageLib.sol";

/// @notice The ```Erc20Core``` contract is a base contract for the Erc20 standard
/// @title Erc20Core
/// @author Agora
abstract contract Erc20Core is IErc20Errors {
    using StorageLib for uint256;
    using SafeCastLib for uint256;

    //==============================================================================
    // Internal Procedural Functions
    //==============================================================================

    /// The ```_approve``` function is used to approve a spender to spend a certain amount of tokens on behalf of the caller
    /// @dev This function reverts on failure
    /// @param _spender The address of the spender
    /// @param _value The amount of tokens to approve for spending
    function _approve(address _owner, address _spender, uint256 _value) internal {
        StorageLib.getPointerToErc20CoreStorage().accountAllowances[_owner][_spender] = _value;
        emit Approval({ owner: _owner, spender: _spender, value: _value });
    }

    /// @notice The ```_transfer``` function transfers tokens which belong to the caller
    /// @dev This function reverts on failure
    /// @param _to The address of the recipient
    /// @param _transferValue The amount of tokens to transfer
    function _transfer(address _from, address _to, uint248 _transferValue) internal {
        // Checks: Ensure _from address is not frozen
        StorageLib.Erc20AccountData memory _accountDataFrom = StorageLib.getPointerToErc20CoreStorage().accountData[
            _from
        ];
        if (_accountDataFrom.isFrozen) revert AccountIsFrozen({ frozenAccount: _from });

        // Checks: Ensure _from has enough balance
        if (_accountDataFrom.balance < _transferValue)
            revert ERC20InsufficientBalance({
                sender: _from,
                balance: _accountDataFrom.balance,
                needed: _transferValue
            });

        // Effects: update balances on the _from account
        unchecked {
            // Underflow not possible: _transferValue <= fromBalance asserted above
            StorageLib.getPointerToErc20CoreStorage().accountData[_from].balance =
                _accountDataFrom.balance -
                _transferValue;
        }

        // NOTE: typically checks are done before effects, but in this case we need to handle the case where _to == _from and so we want to read the latest values
        // Checks: Ensure _to address is not frozen
        StorageLib.Erc20AccountData memory _accountDataTo = StorageLib.getPointerToErc20CoreStorage().accountData[_to];
        if (_accountDataTo.isFrozen) revert AccountIsFrozen({ frozenAccount: _to });

        // Effects: update balances on the _to account
        unchecked {
            // Overflow not possible: _transferValue + toBalance <= (2^248 -1) x 10^-6 [more money than atoms in the galaxy]
            StorageLib.getPointerToErc20CoreStorage().accountData[_to].balance =
                _accountDataTo.balance +
                _transferValue;
        }

        emit Transfer({ from: _from, to: _to, value: _transferValue });
    }

    /// @notice The ```_spendAllowance``` function decrements a spenders allowance
    /// @dev Treats type(uint256).max as infinite allowance and does not update balance
    /// @param _owner The address of the owner
    /// @param _spender The address of the spender
    /// @param _value The amount of allowance to decrement
    function _spendAllowance(address _owner, address _spender, uint256 _value) internal {
        uint256 _currentAllowance = StorageLib.getPointerToErc20CoreStorage().accountAllowances[_owner][_spender];

        // We treat uint256.max as infinite allowance, so we don't need to read/write storage in that case
        if (_currentAllowance != type(uint256).max) {
            if (_currentAllowance < _value)
                revert ERC20InsufficientAllowance({ spender: _spender, allowance: _currentAllowance, needed: _value });
            unchecked {
                StorageLib.getPointerToErc20CoreStorage().accountAllowances[_owner][_spender] =
                    _currentAllowance -
                    _value;
            }
        }
    }

    //==============================================================================
    // Events
    //==============================================================================

    /// @notice The ```Transfer``` event is emitted when tokens are transferred from one account to another
    /// @param from The account that is transferring tokens
    /// @param to The account that is receiving tokens
    /// @param value The amount of tokens being transferred
    event Transfer(address indexed from, address indexed to, uint256 value);

    /// @notice ```Approval``` emitted when the allowance of a `spender` for an `owner` is set by a call to {approve}
    /// @param owner The account that is allowing the spender to spend
    /// @param spender The account that is allowed to spend
    /// @param value The amount of funds that the spender is allowed to spend
    event Approval(address indexed owner, address indexed spender, uint256 value);

    //==============================================================================
    // Errors
    //==============================================================================

    /// @notice ```AccountIsFrozen``` error is emitted when an account is frozen and a transfer is attempted
    /// @param frozenAccount The account that is frozen
    error AccountIsFrozen(address frozenAccount);
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity 0.8.21;

// ====================================================================
//             _        ______     ___   _______          _
//            / \     .' ___  |  .'   `.|_   __ \        / \
//           / _ \   / .'   \_| /  .-.  \ | |__) |      / _ \
//          / ___ \  | |   ____ | |   | | |  __ /      / ___ \
//        _/ /   \ \_\ `.___]  |\  `-'  /_| |  \ \_  _/ /   \ \_
//       |____| |____|`._____.'  `.___.'|____| |___||____| |____|
// ====================================================================
// ========================= Erc20Privileged ==========================
// ====================================================================

import { SafeCastLib } from "solady/src/utils/SafeCastLib.sol";

import { AgoraDollarAccessControl } from "./AgoraDollarAccessControl.sol";
import { Erc20Core } from "./Erc20Core.sol";

import { StorageLib } from "./proxy/StorageLib.sol";

/// @notice The ```Erc20Privileged``` contract extends the ```Erc20Core``` contract with privileged actions (mint, burn, freeze)
abstract contract Erc20Privileged is Erc20Core, AgoraDollarAccessControl {
    using SafeCastLib for uint256;
    using StorageLib for uint256;

    //==============================================================================
    // Mint Functions
    //==============================================================================

    /// @notice Parameters for a single mint operation
    /// @param receiverAddress The address to mint tokens to
    /// @param value The amount of tokens to mint
    struct BatchMintParam {
        address receiverAddress;
        uint256 value;
    }

    /// @notice The ```batchMint``` function mints tokens to multiple accounts in a single transaction
    /// @dev This function must be called by an address to which the MINTER_ROLE is granted
    /// @dev Reverts on failure
    /// @param _mints An array of ```BatchMintParam``` structs
    function batchMint(BatchMintParam[] memory _mints) external {
        // Checks: sender must be minter
        _requireSenderIsRole({ _role: MINTER_ROLE });

        // Checks: minting must not be paused
        if (StorageLib.sloadImplementationSlotDataAsUint256().isMintPaused()) revert StorageLib.MintPaused();

        // Effects: add to totalSupply and account balances
        for (uint256 i = 0; i < _mints.length; i++) {
            // Checks: account cannot be 0 address
            if (_mints[i].receiverAddress == address(0)) revert ERC20InvalidReceiver({ receiver: address(0) });

            // Effects: add to totalSupply and account balance
            uint248 _value248 = _mints[i].value.toUint248();
            StorageLib.getPointerToErc20CoreStorage().totalSupply += _value248;
            StorageLib.getPointerToErc20CoreStorage().accountData[_mints[i].receiverAddress].balance += _value248;

            // Emit event
            emit Transfer({ from: address(0), to: _mints[i].receiverAddress, value: _mints[i].value });
            emit Minted({ receiver: _mints[i].receiverAddress, value: _mints[i].value });
        }
    }

    //==============================================================================
    // Burn Functions
    //==============================================================================

    /// @notice Parameters for a single burn operation
    /// @param burnFromAddress The address to burn tokens from
    /// @param value The amount of tokens to burn
    struct BatchBurnFromParam {
        address burnFromAddress;
        uint256 value;
    }

    /// @notice The ```batchBurnFrom``` function burns tokens from multiple accounts in a single transaction
    /// @dev This function must be called by an address to which the BURNER_ROLE is granted
    /// @dev Reverts on failure
    /// @param _burns An array of ```BatchBurnFromParam``` structs
    function batchBurnFrom(BatchBurnFromParam[] memory _burns) external {
        // Checks: sender must be burner
        _requireSenderIsRole({ _role: BURNER_ROLE });

        // Checks: burnFrom must not be paused
        if (StorageLib.sloadImplementationSlotDataAsUint256().isBurnFromPaused()) revert StorageLib.BurnFromPaused();

        for (uint256 i = 0; i < _burns.length; i++) {
            // Effects: subtract from totalSupply and account balance
            uint248 _value248 = _burns[i].value.toUint248();
            StorageLib.getPointerToErc20CoreStorage().totalSupply -= _value248;
            StorageLib.getPointerToErc20CoreStorage().accountData[_burns[i].burnFromAddress].balance -= _value248;

            // emit event (include Burned event to prevent spoofing of Transfer event as we don't check for 0 address in transfer)
            emit Transfer({ from: _burns[i].burnFromAddress, to: address(0), value: _burns[i].value });
            emit Burned({ burnFrom: _burns[i].burnFromAddress, value: _burns[i].value });
        }
    }

    //==============================================================================
    // Freeze Functions
    //==============================================================================

    /// @notice The ```freeze``` function freezes an account so that it cannot transfer tokens
    /// @param _account The account to freeze
    function freeze(address _account) external {
        _requireSenderIsRole({ _role: FREEZER_ROLE });
        if (StorageLib.sloadImplementationSlotDataAsUint256().isFreezingPaused()) revert StorageLib.FreezingPaused();

        StorageLib.getPointerToErc20CoreStorage().accountData[_account].isFrozen = true;
        emit AccountFrozen({ account: _account });
    }

    /// @notice The ```unfreeze``` function unfreezes an account so that it can transfer tokens again
    /// @param _account The account to unfreeze
    function unfreeze(address _account) external {
        _requireSenderIsRole({ _role: FREEZER_ROLE });
        if (StorageLib.sloadImplementationSlotDataAsUint256().isFreezingPaused()) revert StorageLib.FreezingPaused();

        StorageLib.getPointerToErc20CoreStorage().accountData[_account].isFrozen = false;
        emit AccountUnfrozen({ account: _account });
    }

    //==============================================================================
    // Events
    //==============================================================================

    /// @notice The ```AccountUnfrozen``` event is emitted when an account is unfrozen
    /// @param account The account that was unfrozen
    event AccountUnfrozen(address indexed account);

    /// @notice The ```AccountFrozen``` event is emitted when an account is frozen
    /// @param account The account that was frozen
    event AccountFrozen(address indexed account);

    /// @notice The ```Minted``` event is emitted when tokens are minted
    /// @param receiver The account that received the minted tokens
    /// @param value The amount of tokens minted
    event Minted(address indexed receiver, uint256 value);

    /// @notice The ```Burned``` event is emitted when tokens are burned
    /// @param burnFrom The account that burned the tokens
    /// @param value The amount of tokens burned
    event Burned(address indexed burnFrom, uint256 value);
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity 0.8.21;

// ====================================================================
//             _        ______     ___   _______          _
//            / \     .' ___  |  .'   `.|_   __ \        / \
//           / _ \   / .'   \_| /  .-.  \ | |__) |      / _ \
//          / ___ \  | |   ____ | |   | | |  __ /      / ___ \
//        _/ /   \ \_\ `.___]  |\  `-'  /_| |  \ \_  _/ /   \ \_
//       |____| |____|`._____.'  `.___.'|____| |___||____| |____|
// ====================================================================
// ============================= Erc2612 ==============================
// ====================================================================

import { SignatureCheckerLib } from "solady/src/utils/SignatureCheckerLib.sol";

import { Eip712 } from "./Eip712.sol";
import { Erc20Core } from "./Erc20Core.sol";

import { StorageLib } from "./proxy/StorageLib.sol";

abstract contract Erc2612 is Eip712, Erc20Core {
    using StorageLib for uint256;

    /// @notice The ```PERMIT_TYPEHASH``` stores keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)")
    bytes32 public constant PERMIT_TYPEHASH =
        keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");

    //==============================================================================
    // External Procedural Functions
    //==============================================================================

    /// @notice The ```permit``` function sets an allowance with a signature
    /// @param _owner The account that signed the message
    /// @param _spender The account that is allowed to spend the funds
    /// @param _value The amount of funds that can be spent
    /// @param _deadline The time by which the transaction must be completed
    /// @param _v The v of the ECDSA signature
    /// @param _r The r of the ECDSA signature
    /// @param _s The s of the ECDSA signature
    function permit(
        address _owner,
        address _spender,
        uint256 _value,
        uint256 _deadline,
        uint8 _v,
        bytes32 _r,
        bytes32 _s
    ) external {
        permit({
            _owner: _owner,
            _spender: _spender,
            _value: _value,
            _deadline: _deadline,
            _signature: abi.encodePacked(_r, _s, _v)
        });
    }
    /// @notice The ```permit``` function sets an allowance with a signature
    /// @param _owner The account that signed the message
    /// @param _spender The account that is allowed to spend the funds
    /// @param _value The amount of funds that can be spent
    /// @param _deadline The time by which the transaction must be completed
    /// @param _signature The signature of the message

    function permit(
        address _owner,
        address _spender,
        uint256 _value,
        uint256 _deadline,
        bytes memory _signature
    ) public {
        // Checks: contract-wide access control
        bool _isSignatureVerificationPaused = StorageLib
            .sloadImplementationSlotDataAsUint256()
            .isSignatureVerificationPaused();
        if (_isSignatureVerificationPaused) revert StorageLib.SignatureVerificationPaused();

        // Checks: deadline
        if (block.timestamp > _deadline) revert Erc2612ExpiredSignature({ deadline: _deadline });

        // Effects: increment nonce
        uint256 _nextNonce;
        unchecked {
            _nextNonce = StorageLib.getPointerToErc2612Storage().nonces[_owner]++;
        }
        bytes32 _structHash = keccak256(abi.encode(PERMIT_TYPEHASH, _owner, _spender, _value, _nextNonce, _deadline));

        bytes32 _hash = _hashTypedDataV4({ structHash: _structHash });

        // Checks: is valid eoa or eip1271 signature
        bool _isValidSignature = SignatureCheckerLib.isValidSignatureNow({
            signer: _owner,
            hash: _hash,
            signature: _signature
        });
        if (!_isValidSignature) revert Erc2612InvalidSignature();

        // Effects: update bookkeeping
        _approve({ _owner: _owner, _spender: _spender, _value: _value });
    }

    /// @notice The ```DOMAIN_SEPARATOR``` function returns the configured domain separator
    /// @return _domainSeparator The domain separator
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32 _domainSeparator) {
        _domainSeparator = _domainSeparatorV4();
    }

    //==============================================================================
    // Errors
    //==============================================================================

    /// @notice The ```Erc2612ExpiredSignature``` error is emitted when the signature is expired
    /// @param deadline the time by which the transaction must be completed
    error Erc2612ExpiredSignature(uint256 deadline);

    /// @notice The ```Erc2612InvalidSignature``` error is emitted when the signature is invalid
    error Erc2612InvalidSignature();
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity 0.8.21;

// ====================================================================
//             _        ______     ___   _______          _
//            / \     .' ___  |  .'   `.|_   __ \        / \
//           / _ \   / .'   \_| /  .-.  \ | |__) |      / _ \
//          / ___ \  | |   ____ | |   | | |  __ /      / ___ \
//        _/ /   \ \_\ `.___]  |\  `-'  /_| |  \ \_  _/ /   \ \_
//       |____| |____|`._____.'  `.___.'|____| |___||____| |____|
// ====================================================================
// ============================ StorageLib ============================
// ====================================================================

/**
 * This library contains information for accessing unstructured storage following erc1967
 * and erc7201 standards.
 *
 * The erc1967 storage slots are defined using their own formula/namespace.
 * These are listed last in the contract.
 *
 * The erc7201 namespace is defined as <ContractName>.<Namespace>
 * The deriveErc7201StorageSlot() function is used to derive the storage slot for a given namespace
 * and to check that value against the hard-coded bytes32 value for the slot location in testing frameworks
 * Each inherited contract has its own struct of the form <ContractName>Storage which matches <Namespace>
 * from above. Each struct is held in a unique namespace and has a unique storage slot.
 * See: https://eips.ethereum.org/EIPS/eip-7201 for additional information regarding this standard
 */
/// @title StorageLib
/// @dev Implements pure functions for calculating and accessing storage slots according to eip1967 and eip7201
/// @author Agora
library StorageLib {
    /// @notice Global namespace for use in deriving storage slot locations
    string internal constant GLOBAL_ERC7201_NAMESPACE = "AgoraDollarErc1967Proxy";

    // Use this function to check hardcoded bytes32 values against the expected formula
    function deriveErc7201StorageSlot(string memory _localNamespace) internal pure returns (bytes32) {
        bytes memory _namespace = abi.encodePacked(GLOBAL_ERC7201_NAMESPACE, ".", _localNamespace);
        return keccak256(abi.encode(uint256(keccak256(_namespace)) - 1)) & ~bytes32(uint256(0xff));
    }

    //==============================================================================
    // Eip3009 Storage Items
    //==============================================================================

    /// @notice The EIP3009 namespace
    string internal constant EIP3009_NAMESPACE = "Eip3009Storage";

    /// @notice The Eip3009Storage struct
    /// @param isAuthorizationUsed A mapping of authorizer to nonce to boolean to indicate if the nonce has been used
    /// @custom:storage-location erc7201:AgoraDollarErc1967Proxy.Eip3009Storage
    struct Eip3009Storage {
        mapping(address _authorizer => mapping(bytes32 _nonce => bool _isNonceUsed)) isAuthorizationUsed;
    }

    /// @notice The ```EIP3009_STORAGE_SLOT_``` is the storage slot for the Eip3009Storage struct
    /// @dev keccak256(abi.encode(uint256(keccak256("AgoraDollarErc1967Proxy.Eip3009Storage")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 internal constant EIP3009_STORAGE_SLOT_ =
        0xbb0a37da742be2e3b68bdb11d195150f4243c03fb37d3cdfa756046082a38600;

    /// @notice The ```getPointerToEip3009Storage``` function returns a pointer to the Eip3009Storage struct
    /// @return $ A pointer to the Eip3009Storage struct
    function getPointerToEip3009Storage() internal pure returns (Eip3009Storage storage $) {
        /// @solidity memory-safe-assembly
        assembly {
            $.slot := EIP3009_STORAGE_SLOT_
        }
    }

    //==============================================================================
    // Erc2612 Storage Items
    //==============================================================================

    /// @notice The Erc2612 namespace
    string internal constant ERC2612_NAMESPACE = "Erc2612Storage";

    /// @notice The Erc2612Storage struct
    /// @param nonces A mapping of signer address to uint256 to store the nonce
    /// @custom:storage-location erc7201:AgoraDollarErc1967Proxy.Erc2612Storage
    struct Erc2612Storage {
        mapping(address _signer => uint256 _nonce) nonces;
    }

    /// @notice The ```ERC2612_STORAGE_SLOT_``` is the storage slot for the Erc2612Storage struct
    /// @dev keccak256(abi.encode(uint256(keccak256("AgoraDollarErc1967Proxy.Erc2612Storage")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 internal constant ERC2612_STORAGE_SLOT_ =
        0x69e87f5b9323740fce20cdf574dacd1d10e756da64a1f2df70fd1ace4c7cc300;

    /// @notice The ```getPointerToErc2612Storage``` function returns a pointer to the Erc2612Storage struct
    /// @return $ A pointer to the Erc2612Storage struct
    function getPointerToErc2612Storage() internal pure returns (Erc2612Storage storage $) {
        /// @solidity memory-safe-assembly
        assembly {
            $.slot := ERC2612_STORAGE_SLOT_
        }
    }

    //==============================================================================
    // Erc20Core Storage Items
    //==============================================================================

    /// @notice The Erc20Core namespace
    string internal constant ERC20_CORE_NAMESPACE = "Erc20CoreStorage";

    /// @notice The Erc20AccountData struct
    /// @param isFrozen A boolean to indicate if the account is frozen
    /// @param balance A uint248 to store the balance of the account
    struct Erc20AccountData {
        bool isFrozen;
        uint248 balance;
    }

    /// @notice The Erc20CoreStorage struct
    /// @param accountData A mapping of address to Erc20AccountData to store account data
    /// @param accountAllowances A mapping of owner to spender to uint256 to store the allowance
    /// @param totalSupply A uint256 to store the total supply of tokens
    /// @custom:storage-location erc7201:AgoraDollarErc1967Proxy.Erc20CoreStorage
    struct Erc20CoreStorage {
        /// @dev _account The account whose data we are accessing
        /// @dev _accountData The account data for the account
        mapping(address _account => Erc20AccountData _accountData) accountData;
        /// @dev _owner The owner of the tokens
        /// @dev _spender The spender of the tokens
        /// @dev _accountAllowance The allowance of the spender
        mapping(address _owner => mapping(address _spender => uint256 _accountAllowance)) accountAllowances;
        /// @dev The total supply of tokens
        uint256 totalSupply;
    }

    /// @notice The ```ERC20_CORE_STORAGE_SLOT_``` is the storage slot for the Erc20CoreStorage struct
    /// @dev keccak256(abi.encode(uint256(keccak256("AgoraDollarErc1967Proxy.Erc20CoreStorage")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 internal constant ERC20_CORE_STORAGE_SLOT_ =
        0x455730fed596673e69db1907be2e521374ba893f1a04cc5f5dd931616cd6b700;

    /// @notice The ```getPointerToErc20CoreStorage``` function returns a pointer to the Erc20CoreStorage struct
    /// @return $ A pointer to the Erc20CoreStorage struct
    function getPointerToErc20CoreStorage() internal pure returns (Erc20CoreStorage storage $) {
        /// @solidity memory-safe-assembly
        assembly {
            $.slot := ERC20_CORE_STORAGE_SLOT_
        }
    }

    //==============================================================================
    // AgoraDollarAccessControl Storage Items
    //==============================================================================

    /// @notice The AgoraDollarAccessControl namespace
    string internal constant AGORA_DOLLAR_ACCESS_CONTROL_NAMESPACE = "AgoraDollarAccessControlStorage";

    /// @notice The RoleData struct
    /// @param pendingRoleAddress The address of the nominated (pending) role
    /// @param currentRoleAddress The address of the current role
    struct AgoraDollarAccessControlRoleData {
        address pendingRoleAddress;
        address currentRoleAddress;
    }

    /// @notice The AgoraDollarAccessControlStorage struct
    /// @param roleData A mapping of role identifier to AgoraDollarAccessControlRoleData to store role data
    /// @custom:storage-location erc7201:AgoraDollarErc1967Proxy.AgoraDollarAccessControlStorage
    struct AgoraDollarAccessControlStorage {
        mapping(bytes32 _role => AgoraDollarAccessControlRoleData _roleData) roleData;
    }

    /// @notice The ```AGORA_DOLLAR_ACCESS_CONTROL_STORAGE_SLOT_``` is the storage slot for the AgoraDollarAccessControlStorage struct
    /// @dev keccak256(abi.encode(uint256(keccak256("AgoraDollarErc1967Proxy.AgoraDollarAccessControlStorage")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 internal constant AGORA_DOLLAR_ACCESS_CONTROL_STORAGE_SLOT_ =
        0x9d28e63f6379c0b2127b14120db65179caba9597ddafa73863de41a4ba1fe700;

    /// @notice The ```getPointerToAgoraDollarAccessControlStorage``` function returns a pointer to the AgoraDollarAccessControlStorage struct
    /// @return $ A pointer to the AgoraDollarAccessControlStorage struct
    function getPointerToAgoraDollarAccessControlStorage()
        internal
        pure
        returns (AgoraDollarAccessControlStorage storage $)
    {
        /// @solidity memory-safe-assembly
        assembly {
            $.slot := AGORA_DOLLAR_ACCESS_CONTROL_STORAGE_SLOT_
        }
    }

    //==============================================================================
    // AgoraDollarErc1967 Admin Slot Items
    //==============================================================================

    /// @notice The AgoraDollarErc1967ProxyAdminStorage struct
    /// @param proxyAdminAddress The address of the proxy admin contract
    /// @custom:storage-location erc1967:eip1967.proxy.admin
    struct AgoraDollarErc1967ProxyAdminStorage {
        address proxyAdminAddress;
    }

    /// @notice The ```AGORA_DOLLAR_ERC1967_PROXY_ADMIN_STORAGE_SLOT_``` is the storage slot for the AgoraDollarErc1967ProxyAdminStorage struct
    /// @dev NOTE: deviates from erc7201 standard because erc1967 defines its own storage slot algorithm
    /// @dev bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1)
    bytes32 internal constant AGORA_DOLLAR_ERC1967_PROXY_ADMIN_STORAGE_SLOT_ =
        0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

    /// @notice The ```getPointerToAgoraDollarErc1967ProxyAdminStorage``` function returns a pointer to the AgoraDollarErc1967ProxyAdminStorage struct
    /// @return adminSlot A pointer to the AgoraDollarErc1967ProxyAdminStorage struct
    function getPointerToAgoraDollarErc1967ProxyAdminStorage()
        internal
        pure
        returns (AgoraDollarErc1967ProxyAdminStorage storage adminSlot)
    {
        /// @solidity memory-safe-assembly
        assembly {
            adminSlot.slot := AGORA_DOLLAR_ERC1967_PROXY_ADMIN_STORAGE_SLOT_
        }
    }

    //==============================================================================
    // AgoraDollarErc1967Proxy Implementation Slot Items
    //==============================================================================

    /// @notice The AgoraDollarErc1967ProxyContractStorage struct
    /// @param implementationAddress The address of the implementation contract
    /// @param placeholder A placeholder for bits to be used as bitmask items
    /// @custom:storage-location erc1967:eip1967.proxy.implementation
    struct AgoraDollarErc1967ProxyContractStorage {
        address implementationAddress; // least significant bits first
        uint96 placeholder; // Placeholder for bitmask items defined below
    }

    /// @notice The ```AGORA_DOLLAR_ERC1967_PROXY_CONTRACT_STORAGE_SLOT_``` is the storage slot for the AgoraDollarErc1967ProxyContractStorage struct
    /// @dev bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1)
    bytes32 internal constant AGORA_DOLLAR_ERC1967_PROXY_CONTRACT_STORAGE_SLOT_ =
        0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /// @notice The ```getPointerToAgoraDollarErc1967ProxyContractStorage``` function returns a pointer to the storage slot for the implementation address
    /// @return contractData A pointer to the data in the storage slot for the implementation address and other contract data
    function getPointerToAgoraDollarErc1967ProxyContractStorage()
        internal
        pure
        returns (AgoraDollarErc1967ProxyContractStorage storage contractData)
    {
        /// @solidity memory-safe-assembly
        assembly {
            contractData.slot := AGORA_DOLLAR_ERC1967_PROXY_CONTRACT_STORAGE_SLOT_
        }
    }

    /// @notice The ```sloadImplementationSlotDataAsUint256``` function returns the data at the implementation slot as a uint256
    /// @dev Named this way to draw attention to the sload call
    /// @return _contractData The data at the implementation slot as a uint256
    function sloadImplementationSlotDataAsUint256() internal view returns (uint256 _contractData) {
        /// @solidity memory-safe-assembly
        assembly {
            _contractData := sload(AGORA_DOLLAR_ERC1967_PROXY_CONTRACT_STORAGE_SLOT_)
        }
    }

    /// @notice The ```sstoreImplementationSlotDataAsUint256``` function stores the data at the implementation slot
    /// @dev Named this way to draw attention to the sstore call
    /// @param _contractData The data to store at the implementation slot, given as a uint256
    function sstoreImplementationSlotDataAsUint256(uint256 _contractData) internal {
        /// @solidity memory-safe-assembly
        assembly {
            sstore(AGORA_DOLLAR_ERC1967_PROXY_CONTRACT_STORAGE_SLOT_, _contractData)
        }
    }

    // Contract Access Control masks
    uint256 internal constant IS_MSG_SENDER_FROZEN_CHECK_ENABLED_BIT_POSITION_ = 1 << (255 - 95);
    uint256 internal constant IS_MINT_PAUSED_BIT_POSITION_ = 1 << (255 - 94);
    uint256 internal constant IS_BURN_FROM_PAUSED_BIT_POSITION_ = 1 << (255 - 93);
    uint256 internal constant IS_FREEZING_PAUSED_BIT_POSITION_ = 1 << (255 - 92);
    uint256 internal constant IS_TRANSFER_PAUSED_BIT_POSITION_ = 1 << (255 - 91);
    uint256 internal constant IS_SIGNATURE_VERIFICATION_PAUSED_BIT_POSITION_ = 1 << (255 - 90);

    // internal function upgrade masks
    // Erc20
    uint256 internal constant IS_TRANSFER_UPGRADED_BIT_POSITION_ = 1 << (255 - 89);
    uint256 internal constant IS_TRANSFER_FROM_UPGRADED_BIT_POSITION_ = 1 << (255 - 88);

    // Eip 3009
    uint256 internal constant IS_TRANSFER_WITH_AUTHORIZATION_UPGRADED_BIT_POSITION_ = 1 << (255 - 87);
    uint256 internal constant IS_RECEIVE_WITH_AUTHORIZATION_UPGRADED_BIT_POSITION_ = 1 << (255 - 86);

    //==============================================================================
    // Bitmask Functions
    //==============================================================================

    // These function use a bitmask to check if a specific bit is set in the contract data
    function isMsgSenderFrozenCheckEnabled(uint256 _contractData) internal pure returns (bool) {
        return _contractData & IS_MSG_SENDER_FROZEN_CHECK_ENABLED_BIT_POSITION_ != 0;
    }

    function isMintPaused(uint256 _contractData) internal pure returns (bool) {
        return _contractData & IS_MINT_PAUSED_BIT_POSITION_ != 0;
    }

    function isBurnFromPaused(uint256 _contractData) internal pure returns (bool) {
        return _contractData & IS_BURN_FROM_PAUSED_BIT_POSITION_ != 0;
    }

    function isFreezingPaused(uint256 _contractData) internal pure returns (bool) {
        return _contractData & IS_FREEZING_PAUSED_BIT_POSITION_ != 0;
    }

    function isTransferPaused(uint256 _contractData) internal pure returns (bool) {
        return _contractData & IS_TRANSFER_PAUSED_BIT_POSITION_ != 0;
    }

    function isSignatureVerificationPaused(uint256 _contractData) internal pure returns (bool) {
        return _contractData & IS_SIGNATURE_VERIFICATION_PAUSED_BIT_POSITION_ != 0;
    }

    function isTransferUpgraded(uint256 _contractData) internal pure returns (bool) {
        return _contractData & IS_TRANSFER_UPGRADED_BIT_POSITION_ != 0;
    }

    function isTransferFromUpgraded(uint256 _contractData) internal pure returns (bool) {
        return _contractData & IS_TRANSFER_FROM_UPGRADED_BIT_POSITION_ != 0;
    }

    function isTransferWithAuthorizationUpgraded(uint256 _contractData) internal pure returns (bool) {
        return _contractData & IS_TRANSFER_WITH_AUTHORIZATION_UPGRADED_BIT_POSITION_ != 0;
    }

    function isReceiveWithAuthorizationUpgraded(uint256 _contractData) internal pure returns (bool) {
        return _contractData & IS_RECEIVE_WITH_AUTHORIZATION_UPGRADED_BIT_POSITION_ != 0;
    }

    function implementation(uint256 _contractData) internal pure returns (address) {
        // return least significant 160 bits and cast to an address
        return address(uint160(_contractData));
    }

    function setBitWithMask(
        uint256 _original,
        uint256 _bitToSet,
        bool _setBitToOne
    ) internal pure returns (uint256 _new) {
        // Sets the specified bit to 1 or 0
        _new = _setBitToOne ? _original | _bitToSet : _original & ~_bitToSet;
    }

    //==============================================================================
    // Errors
    //==============================================================================

    /// @notice The ```TransferPaused``` error is emitted when transfers are paused during an attempted transfer
    error TransferPaused();

    /// @notice The ```SignatureVerificationPaused``` error is emitted when signature verification is paused during an attempted transfer
    error SignatureVerificationPaused();

    /// @notice The ```MintPaused``` error is emitted when minting is paused during an attempted mint
    error MintPaused();

    /// @notice The ```BurnFromPaused``` error is emitted when burning is paused during an attempted burn
    error BurnFromPaused();

    /// @notice The ```FreezingPaused``` error is emitted when freezing is paused during an attempted call to freeze() or unfreeze()
    error FreezingPaused();
}

{
  "evmVersion": "shanghai",
  "libraries": {},
  "metadata": {
    "appendCBOR": false,
    "bytecodeHash": "none",
    "useLiteralContent": false
  },
  "optimizer": {
    "enabled": true,
    "runs": 100000000
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "remappings": [
    "contracts/=src/contracts/",
    "interfaces/=src/contracts/interfaces/",
    "forge-std/=node_modules/forge-std/src/",
    "ds-test/=node_modules/ds-test/src/",
    "agora-std/=lib/agora-standard-solidity/src/",
    "@chainlink/=lib/agora-standard-solidity/node_modules/@chainlink/",
    "@openzeppelin/=node_modules/@openzeppelin/",
    "agora-standard-solidity/=lib/agora-standard-solidity/src/",
    "createx/=node_modules/createx/",
    "openzeppelin/=node_modules/createx/lib/openzeppelin-contracts/contracts/",
    "solady/=node_modules/solady/",
    "solidity-bytes-utils/=lib/agora-standard-solidity/node_modules/solidity-bytes-utils/"
  ],
  "viaIR": true
}

• No Contract Security Audit Submitted- Submit Audit Here

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-----Decoded View---------------
Arg [0] : _params (tuple): 
     Arg [1] : name (string): AUSD
     Arg [2] : symbol (string): AUSD
     Arg [3] : eip712Name (string): Agora Dollar
     Arg [4] : eip712Version (string): 1
     Arg [5] : proxyAddress (address): 0x00000000eFE302BEAA2b3e6e1b18d08D69a9012a


-----Encoded View---------------
14 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000020
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000a0
Arg [2] : 00000000000000000000000000000000000000000000000000000000000000e0
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000120
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000160
Arg [5] : 00000000000000000000000000000000efe302beaa2b3e6e1b18d08d69a9012a
Arg [6] : 0000000000000000000000000000000000000000000000000000000000000004
Arg [7] : 4155534400000000000000000000000000000000000000000000000000000000
Arg [8] : 0000000000000000000000000000000000000000000000000000000000000004
Arg [9] : 4155534400000000000000000000000000000000000000000000000000000000
Arg [10] : 000000000000000000000000000000000000000000000000000000000000000c
Arg [11] : 41676f726120446f6c6c61720000000000000000000000000000000000000000
Arg [12] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [13] : 3100000000000000000000000000000000000000000000000000000000000000