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// SPDX-License-Identifier: MIT
pragma solidity 0.8.19;

import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {Pausable} from "@openzeppelin/contracts/security/Pausable.sol";
import {ReentrancyGuard} from "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

/// @title DropnestStaking
/// @notice This contract is used for managing deposits to the Dropnest protocol.
contract DropnestStaking is Ownable, Pausable, ReentrancyGuard {

    ///////////////////
    // Libraries     //
    ///////////////////
    using SafeERC20 for IERC20;

    ///////////////////
    // Errors        //
    ///////////////////
    error DropnestStaking_ZeroAddressProvided();
    error DropnestStaking_ProtocolDoesNotExist();
    error DropnestStaking_DepositMismatch();
    error DropnestStaking_ArraysLengthMismatch();
    error DropnestStaking_MaxProtocolsReached();
    error DropnestStaking_ProtocolInactive(uint256 protocolId);
    error DropnestStaking_CannotChangeProtocolStatus(uint256 protocolId, bool status);
    error DropnestStaking_TokenNotAllowed(address token);
    error DropnestStaking_AmountMustBeGreaterThanZero();
    error DropnestStaking_TokenAlreadySupported(address token);
    /////////////////////
    // State Variables //
    /////////////////////
    // protocolId => target address to move the liquidity
    mapping(uint256 => address) public farmAddresses;

    // protocolId => bool to check if the protocol is active or not
    mapping(uint256 => bool) public protocolStatus;

    // protocols list
    string[] public protocols;

    // number of protocols
    uint256 private protocolCounter;

    // maximum number of protocols to stake in one batch
    uint256 internal constant MAX_PROTOCOLS = 10;

    // mapping to store allowed ERC20 tokens
    mapping(address => bool) private supportedTokens;

    address[] private tokenList;

    ///////////////////
    // Events        //
    ///////////////////
    /// @notice Event emitted when ETH is deposited
    event Deposited(uint256 indexed protocolId, address indexed from, address to, uint256 amount);

    /// @notice Event emitted when ERC20 is deposited
    event ERC20Deposited(uint256 indexed protocolId, address indexed token, address indexed from, address to, uint256 amount);

    /// @notice Event emitted when a new protocol is added
    event ProtocolAdded(uint256 protocolId, string protocolName, address to);

    /// @notice Event emitted when an existing protocol is updated
    event ProtocolUpdated(uint256 protocolId, string protocolName, address to);

    /// @notice Event emitted when protocol status is updated
    event ProtocolStatusUpdated(uint256 protocolId, bool status);

    ///////////////////
    // Modifiers     //
    ///////////////////
    modifier nonZeroAmount(uint256 amount) {
        if (amount == 0) {
            revert DropnestStaking_AmountMustBeGreaterThanZero();
        }
        _;
    }

    modifier allowedToken(address token) {
        if (!supportedTokens[token]) {
            revert DropnestStaking_TokenNotAllowed(token);
        }
        _;
    }

    ///////////////////
    // Functions     //
    ///////////////////

    /// @notice Constructor to initialize the contract
    /// @param _supportedTokens List of supported tokens
    /// @param _protocols List of protocol names
    /// @param _addresses List of addresses corresponding to the protocols
    constructor(address[] memory _supportedTokens, string[] memory _protocols, address[] memory _addresses) Ownable() {
        if (_protocols.length != _addresses.length) {
            revert DropnestStaking_ArraysLengthMismatch();
        }
        for (uint256 i = 0; i < _protocols.length; i++) {
            _addProtocol(_protocols[i], _addresses[i]);
        }
        for (uint256 i = 0; i < _supportedTokens.length; i++) {
            supportedTokens[_supportedTokens[i]] = true;
            tokenList.push(_supportedTokens[i]);
        }
    }

    /////////////////////////
    // External Functions  //
    /////////////////////////

    /// @notice Allows a user to stake ETH on multiple protocols
    /// @param protocolIds Array of protocol IDs to stake on
    /// @param protocolAmounts Array of amounts to stake on each protocol
    function stakeMultiple(uint256[] memory protocolIds, uint256[] memory protocolAmounts) external payable whenNotPaused nonReentrant {
        uint256 totalDepositAmount = msg.value;
        uint256 totalSum = 0;
        if (protocolIds.length != protocolAmounts.length) {
            revert DropnestStaking_ArraysLengthMismatch();
        }
        if (protocolIds.length > MAX_PROTOCOLS) {
            revert DropnestStaking_MaxProtocolsReached();
        }
        for (uint256 i = 0; i < protocolIds.length; i++) {
            totalSum += protocolAmounts[i];
        }
        if (totalSum != totalDepositAmount) {
            revert DropnestStaking_DepositMismatch();
        }
        for (uint256 i = 0; i < protocolIds.length; i++) {
            _stake(protocolIds[i], protocolAmounts[i]);
        }
    }

    /// @notice Allows a user to stake ETH
    /// @param protocolId Protocol ID to stake on
    function stake(uint256 protocolId) external payable whenNotPaused nonReentrant {
        _stake(protocolId, msg.value);
    }

    /// @notice Allows a user to stake ERC20 tokens on multiple protocols
    /// @param token ERC20 token address
    /// @param protocolIds Array of protocol IDs to stake on
    /// @param protocolAmounts Array of amounts to stake on each protocol
    function stakeMultipleERC20(address token, uint256[] memory protocolIds, uint256[] memory protocolAmounts) external whenNotPaused allowedToken(token) nonReentrant {
        if (protocolIds.length != protocolAmounts.length) {
            revert DropnestStaking_ArraysLengthMismatch();
        }
        if (protocolIds.length > MAX_PROTOCOLS) {
            revert DropnestStaking_MaxProtocolsReached();
        }
        for (uint256 i = 0; i < protocolIds.length; i++) {
            _stakeERC20(protocolIds[i], token, protocolAmounts[i]);
        }
    }

    /// @notice Allows a user to stake ERC20 tokens
    /// @param protocolId Protocol ID to stake on
    /// @param token ERC20 token address
    /// @param amount Amount of tokens to stake
    function stakeERC20(uint256 protocolId, address token, uint256 amount) external whenNotPaused allowedToken(token) nonReentrant {
        _stakeERC20(protocolId, token, amount);
    }

    /// @notice Allows the owner to add or update a protocol
    /// @param protocolName Protocol name to be added or updated
    /// @param farmerAddress Address corresponding to the protocol
    function addOrUpdateProtocol(string memory protocolName, address farmerAddress) external onlyOwner {
        if (farmerAddress == address(0)) {
            revert DropnestStaking_ZeroAddressProvided();
        }
        uint256 length = protocols.length;
        for (uint256 i = 0; i < length; i++) {
            if (keccak256(abi.encodePacked(protocols[i])) == keccak256(abi.encodePacked(protocolName))) {
                uint256 id = i + 1;
                farmAddresses[id] = farmerAddress;
                emit ProtocolUpdated(id, protocolName, farmerAddress);
                return;
            }
        }
        _addProtocol(protocolName, farmerAddress);
    }

    /// @notice Allows the owner to set the protocol status
    /// @param protocolId Protocol ID
    /// @param status Protocol status
    function setProtocolStatus(uint256 protocolId, bool status) external onlyOwner {
        if (farmAddresses[protocolId] == address(0)) {
            revert DropnestStaking_ProtocolDoesNotExist();
        }
        if (protocolStatus[protocolId] == status) {
            revert DropnestStaking_CannotChangeProtocolStatus(protocolId, status);
        }
        protocolStatus[protocolId] = status;
        emit ProtocolStatusUpdated(protocolId, status);
    }

    /// @notice Allows the owner to pause the contract
    function pause() external onlyOwner {
        _pause();
    }

    /// @notice Allows the owner to unpause the contract
    function unpause() external onlyOwner {
        _unpause();
    }

    //////////////////////////////////////////////////////
    // Private & Internal Functions                     //
    //////////////////////////////////////////////////////

    function _stakeERC20(uint256 protocolId, address tokenAddress, uint256 amount) private nonZeroAmount(amount) {
        if (tokenAddress == address(0)) {
            revert DropnestStaking_ZeroAddressProvided();
        }

        if (!protocolStatus[protocolId]) {
            revert DropnestStaking_ProtocolInactive(protocolId);
        }
        address to = farmAddresses[protocolId];
        if (to == address(0)) {
            revert DropnestStaking_ProtocolDoesNotExist();
        }
        IERC20(tokenAddress).safeTransferFrom(msg.sender, address(this), amount);
        IERC20(tokenAddress).safeTransfer(to, amount);
        emit ERC20Deposited(protocolId, tokenAddress, msg.sender, to, amount);
    }

    function _stake(uint256 protocolId, uint256 protocolAmount) private nonZeroAmount(protocolAmount) {
        address to = farmAddresses[protocolId];
        if (to == address(0)) {
            revert DropnestStaking_ProtocolDoesNotExist();
        }
        if (!protocolStatus[protocolId]) {
            revert DropnestStaking_ProtocolInactive(protocolId);
        }
        emit Deposited(protocolId, msg.sender, to, protocolAmount);
        payable(to).transfer(protocolAmount);
    }

    function _addProtocol(string memory protocolName, address to) private {
        if (to == address(0)) {
            revert DropnestStaking_ZeroAddressProvided();
        }
        protocolCounter++;
        protocols.push(protocolName);
        farmAddresses[protocolCounter] = to;
        protocolStatus[protocolCounter] = true;
        emit ProtocolAdded(protocolCounter, protocolName, to);
    }

    /// @notice Adds a new ERC20 token to the list of supported deposit tokens
    /// @param token Token address
    function addSupportedToken(address token) external onlyOwner {
        if (supportedTokens[token]) {
            revert DropnestStaking_TokenAlreadySupported(token);
        }
        supportedTokens[token] = true;
        tokenList.push(token);
    }

    /// @notice Removes an ERC20 token from the list of supported deposit tokens
    /// @param token Token address
    function removeSupportedToken(address token) external onlyOwner {
        supportedTokens[token] = false;
        uint256 length = tokenList.length;
        for (uint256 i = 0; i < length; i++) {
            if (tokenList[i] == token) {
                tokenList[i] = tokenList[length - 1];
                tokenList.pop();
                break;
            }
        }
    }

    //////////////////////////////////////////////////////////
    // External & Public View Functions                     //
    //////////////////////////////////////////////////////////

    /// @notice Returns the list of protocols
    function getProtocols() public view returns (string[] memory) {
        return protocols;
    }

    /// @notice Returns the address of the specified protocol
    /// @param protocolId Protocol ID
    function getFarmAddress(uint256 protocolId) public view returns (address) {
        return farmAddresses[protocolId];
    }

    /// @notice Returns the list of supported deposit tokens
    function getSupportedTokens() public view returns (address[] memory) {
        return tokenList;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling 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 (last updated v4.7.0) (security/Pausable.sol)

pragma solidity ^0.8.0;

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

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    constructor() {
        _paused = false;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        _requireNotPaused();
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        _requirePaused();
        _;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }

    /**
     * @dev Throws if the contract is paused.
     */
    function _requireNotPaused() internal view virtual {
        require(!paused(), "Pausable: paused");
    }

    /**
     * @dev Throws if the contract is not paused.
     */
    function _requirePaused() internal view virtual {
        require(paused(), "Pausable: not paused");
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == _ENTERED;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 amount) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/IERC20Permit.sol";
import "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
     * Revert on invalid signature.
     */
    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

        (bool success, bytes memory returndata) = address(token).call(data);
        return
            success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (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;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 *
 * ==== Security Considerations
 *
 * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature
 * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be
 * considered as an intention to spend the allowance in any specific way. The second is that because permits have
 * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should
 * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be
 * generally recommended is:
 *
 * ```solidity
 * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {
 *     try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}
 *     doThing(..., value);
 * }
 *
 * function doThing(..., uint256 value) public {
 *     token.safeTransferFrom(msg.sender, address(this), value);
 *     ...
 * }
 * ```
 *
 * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of
 * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also
 * {SafeERC20-safeTransferFrom}).
 *
 * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so
 * contracts should have entry points that don't rely on permit.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     *
     * CAUTION: See Security Considerations above.
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

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    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
    "forge-std/=lib/forge-std/src/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/",
    "openzeppelin/=lib/openzeppelin-contracts/contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
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        "userdoc",
        "metadata",
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  },
  "evmVersion": "paris",
  "viaIR": false,
  "libraries": {}
}

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-----Decoded View---------------
Arg [0] : _supportedTokens (address[]): 0xF0E27721a502716B3554e81949760be5741c6f5F,0xAD96fDeb090BD8f9186d8808C3bbC59D95bF8F41
Arg [1] : _protocols (string[]): Karak,Linea,Monad,Azuro,Puffer,Taiko,Scroll,Nile,Mendi,Stargate,Stakestone
Arg [2] : _addresses (address[]): 0x84A062636Fa9c653645e93ace69EBC0Bc2297544,0xd9348779FF75be0e31fd2C7C2180C242658fEbae,0x56a85EaCE64aaB2da245aECD96D62d2c5e862529,0xb2CEe9221b857B86Dab5Ce9123874707c77006Ba,0x8Cd75B8768259AA9fE6B8f217ccE4e37CAC8e76D,0x2Bd866F401aB7Af785bf1b2D0Eec4767997f9Cc2,0x0d9aecfA37a855AE00d6D0a825e607ffEB919FE0,0x4e48bbDE7c3d73238494Aa52f5daC295B2cB7918,0xBb9a772C475101aF4d32118FaEd80a28f82A1f8A,0xdA3B676F4EDb8a96B7Ba93d603DbAB2E2aF23A00,0x991B04B0D539C6D7714D7622f1662c32454E15a9

-----Encoded View---------------
52 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000c0
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000500
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000002
Arg [4] : 000000000000000000000000f0e27721a502716b3554e81949760be5741c6f5f
Arg [5] : 000000000000000000000000ad96fdeb090bd8f9186d8808c3bbc59d95bf8f41
Arg [6] : 000000000000000000000000000000000000000000000000000000000000000b
Arg [7] : 0000000000000000000000000000000000000000000000000000000000000160
Arg [8] : 00000000000000000000000000000000000000000000000000000000000001a0
Arg [9] : 00000000000000000000000000000000000000000000000000000000000001e0
Arg [10] : 0000000000000000000000000000000000000000000000000000000000000220
Arg [11] : 0000000000000000000000000000000000000000000000000000000000000260
Arg [12] : 00000000000000000000000000000000000000000000000000000000000002a0
Arg [13] : 00000000000000000000000000000000000000000000000000000000000002e0
Arg [14] : 0000000000000000000000000000000000000000000000000000000000000320
Arg [15] : 0000000000000000000000000000000000000000000000000000000000000360
Arg [16] : 00000000000000000000000000000000000000000000000000000000000003a0
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