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// SPDX-License-Identifier: MIT

pragma solidity 0.8.26;

import {Ownable2Step, Ownable} from "@openzeppelin/contracts/access/Ownable2Step.sol";
import {IEverlongCore} from "src/interfaces/core/IEverlongCore.sol";
import {IMetaCore} from "src/interfaces/utils/IMetaCore.sol";

/**
 * @title EverlongCore
 * @author Everlong Labs
 * @notice Contract that serves as single source of truth for the owner across all Everlong contracts
 */
contract EverlongCore is Ownable2Step, IEverlongCore {
    IMetaCore public immutable metaCore;
    address public feeReceiver;

    error ZeroAddress();

    event FeeReceiverUpdated(address indexed newFeeReceiver);

    constructor(address _metaCore, address _owner, address _feeReceiver) {
        if (_metaCore == address(0)) revert ZeroAddress();

        metaCore = IMetaCore(_metaCore);
        feeReceiver = _feeReceiver;

        _transferOwnership(_owner);

        emit FeeReceiverUpdated(_feeReceiver);
    }

    function setFeeReceiver(address _feeReceiver) external onlyOwner {
        if (_feeReceiver == address(0)) revert ZeroAddress();

        feeReceiver = _feeReceiver;

        emit FeeReceiverUpdated(_feeReceiver);
    }

    function owner() public view override(IEverlongCore, Ownable) returns (address) {
        return super.owner();
    }

    function priceFeed() external view returns (address) {
        return metaCore.priceFeed();
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (access/Ownable2Step.sol)

pragma solidity ^0.8.0;

import "./Ownable.sol";

/**
 * @dev Contract module which provides access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership} and {acceptOwnership}.
 *
 * This module is used through inheritance. It will make available all functions
 * from parent (Ownable).
 */
abstract contract Ownable2Step is Ownable {
    address private _pendingOwner;

    event OwnershipTransferStarted(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Returns the address of the pending owner.
     */
    function pendingOwner() public view virtual returns (address) {
        return _pendingOwner;
    }

    /**
     * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one.
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual override onlyOwner {
        _pendingOwner = newOwner;
        emit OwnershipTransferStarted(owner(), newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner.
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual override {
        delete _pendingOwner;
        super._transferOwnership(newOwner);
    }

    /**
     * @dev The new owner accepts the ownership transfer.
     */
    function acceptOwnership() external {
        address sender = _msgSender();
        require(pendingOwner() == sender, "Ownable2Step: caller is not the new owner");
        _transferOwnership(sender);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.26;

/**
 * @title EverlongCore
 * @author Everlong Labs
 * @notice Single source of truth across all Everlong contracts for key administrative data
 */
interface IEverlongCore {
    function owner() external view returns (address);
    function feeReceiver() external view returns (address);
    function priceFeed() external view returns (address);

    function setFeeReceiver(address _feeReceiver) external;
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.26;

interface IMetaCore {
    // ---------------------------------
    // Structures
    // ---------------------------------
    struct FeeInfo {
        bool existsForDebtToken;
        uint16 debtTokenFee;
    }

    struct RebalancerFeeInfo {
        bool exists;
        uint16 entryFee;
        uint16 exitFee;
    }

    // ---------------------------------
    // Public constants
    // ---------------------------------
    function OWNERSHIP_TRANSFER_DELAY() external view returns (uint256);
    function DEFAULT_FLASH_LOAN_FEE() external view returns (uint16);

    // ---------------------------------
    // Public state variables
    // ---------------------------------
    function debtToken() external view returns (address);
    function lspEntryFee() external view returns (uint16);
    function lspExitFee() external view returns (uint16);
    function interestProtocolShare() external view returns (uint16);
    /// @dev Default interest receiver for all PositionManagers, unless overriden in the respective PM
    function defaultInterestReceiver() external view returns (address);

    function feeReceiver() external view returns (address);
    function priceFeed() external view returns (address);
    function owner() external view returns (address);
    function pendingOwner() external view returns (address);
    function ownershipTransferDeadline() external view returns (uint256);
    function guardian() external view returns (address);
    function paused() external view returns (bool);
    function lspBootstrapPeriod() external view returns (uint64);

    // ---------------------------------
    // External functions
    // ---------------------------------
    function setFeeReceiver(address _feeReceiver) external;
    function setPriceFeed(address _priceFeed) external;
    function setGuardian(address _guardian) external;

    /**
     * @notice Global pause/unpause
     *         Pausing halts new deposits/borrowing across the protocol
     */
    function setPaused(bool _paused) external;

    /**
     * @notice Extend or change the LSP bootstrap period,
     *         after which certain protocol mechanics change
     */
    function setLspBootstrapPeriod(uint64 _bootstrapPeriod) external;

    /**
     * @notice Set a custom flash-loan fee for a given periphery contract
     * @param _periphery Target contract that will get this custom fee
     * @param _debtTokenFee Fee in basis points (bp)
     * @param _existsForDebtToken Whether this custom fee is used when the caller = `debtToken`
     */
    function setPeripheryFlashLoanFee(address _periphery, uint16 _debtTokenFee, bool _existsForDebtToken) external;

    /**
     * @notice Begin the ownership transfer process
     * @param newOwner The address proposed to be the new owner
     */
    function commitTransferOwnership(address newOwner) external;

    /**
     * @notice Finish the ownership transfer, after the mandatory delay
     */
    function acceptTransferOwnership() external;

    /**
     * @notice Revoke a pending ownership transfer
     */
    function revokeTransferOwnership() external;

    /**
     * @notice Look up a custom flash-loan fee for a specific periphery contract
     * @param peripheryContract The contract that might have a custom fee
     * @return The flash-loan fee in basis points
     */
    function getPeripheryFlashLoanFee(address peripheryContract) external view returns (uint16);

    /**
     * @notice Set / override entry & exit fees for a special rebalancer contract
     */
    function setRebalancerFee(address _rebalancer, uint16 _entryFee, uint16 _exitFee) external;

    /**
     * @notice Set the LSP entry fee globally
     * @param _fee Fee in basis points
     */
    function setEntryFee(uint16 _fee) external;

    /**
     * @notice Set the LSP exit fee globally
     * @param _fee Fee in basis points
     */
    function setExitFee(uint16 _fee) external;

    /**
     * @notice Set the interest protocol share globally to all PositionManagers
     * @param _interestProtocolShare Share in basis points
     */
    function setInterestProtocolShare(uint16 _interestProtocolShare) external;

    /**
     * @notice Look up the LSP entry fee for a rebalancer
     * @param rebalancer Possibly has a special fee
     * @return The entry fee in basis points
     */
    function getLspEntryFee(address rebalancer) external view returns (uint16);

    /**
     * @notice Look up the LSP exit fee for a rebalancer
     * @param rebalancer Possibly has a special fee
     * @return The exit fee in basis points
     */
    function getLspExitFee(address rebalancer) external view returns (uint16);

    // ---------------------------------
    // Events
    // ---------------------------------
    event NewOwnerCommitted(address indexed owner, address indexed pendingOwner, uint256 deadline);
    event NewOwnerAccepted(address indexed oldOwner, address indexed newOwner);
    event NewOwnerRevoked(address indexed owner, address indexed revokedOwner);

    event FeeReceiverSet(address indexed feeReceiver);
    event PriceFeedSet(address indexed priceFeed);
    event GuardianSet(address indexed guardian);
    event PeripheryFlashLoanFee(address indexed periphery, uint16 debtTokenFee);
    event LSPBootstrapPeriodSet(uint64 bootstrapPeriod);
    event RebalancerFees(address indexed rebalancer, uint16 entryFee, uint16 exitFee);
    event EntryFeeSet(uint16 fee);
    event ExitFeeSet(uint16 fee);
    event InterestProtocolShareSet(uint16 interestProtocolShare);
    event DefaultInterestReceiverSet(address indexed defaultInterestReceiver);
    event Paused();
    event Unpaused();
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

{
  "remappings": [
    "@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
    "@openzeppelin-upgradeable/contracts/=lib/openzeppelin-contracts-upgradeable/contracts/",
    "forge-std/=lib/forge-std/src/",
    "@uniswap/v3-core/=lib/v3-core/",
    "@uniswap/v3-periphery/=lib/v3-periphery/",
    "@openzeppelin/contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/contracts/",
    "ds-test/=lib/openzeppelin-contracts-upgradeable/lib/forge-std/lib/ds-test/src/",
    "erc4626-tests/=lib/openzeppelin-contracts-upgradeable/lib/erc4626-tests/",
    "halmos-cheatcodes/=lib/openzeppelin-contracts-upgradeable/lib/halmos-cheatcodes/src/",
    "openzeppelin-contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/",
    "v3-core/=lib/v3-core/contracts/",
    "v3-periphery/=lib/v3-periphery/contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 1
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "cancun",
  "viaIR": false
}

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[{"inputs":[{"internalType":"address","name":"_metaCore","type":"address"},{"internalType":"address","name":"_owner","type":"address"},{"internalType":"address","name":"_feeReceiver","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"ZeroAddress","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"newFeeReceiver","type":"address"}],"name":"FeeReceiverUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferStarted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[],"name":"acceptOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"feeReceiver","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"metaCore","outputs":[{"internalType":"contract IMetaCore","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pendingOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"priceFeed","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_feeReceiver","type":"address"}],"name":"setFeeReceiver","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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0000000000000000000000008700af942be2a6e5566306d0ee7bcc5a3a6e0ce80000000000000000000000009a0c15d6df2b99b9bdddec6c6a543d42f4193ad8000000000000000000000000631002609ac3d88097d31c8aec7ea48cf4c9c648

-----Decoded View---------------
Arg [0] : _metaCore (address): 0x8700AF942BE2A6E5566306D0eE7Bcc5a3A6E0ce8
Arg [1] : _owner (address): 0x9A0c15d6df2b99b9BdDDEc6C6A543D42f4193AD8
Arg [2] : _feeReceiver (address): 0x631002609aC3d88097D31C8AeC7Ea48cF4c9C648

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 0000000000000000000000008700af942be2a6e5566306d0ee7bcc5a3a6e0ce8
Arg [1] : 0000000000000000000000009a0c15d6df2b99b9bdddec6c6a543d42f4193ad8
Arg [2] : 000000000000000000000000631002609ac3d88097d31c8aec7ea48cf4c9c648