// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.19;

import {Ownable} from "src/utils/Ownable.sol";

///@title AccessControl
/// @notice Handles the different access authorizations for the relayer
abstract contract AccessControl is Ownable {
  /*//////////////////////////////////////////////////////////////
                             STORAGE
    //////////////////////////////////////////////////////////////*/

  ///@notice exclusive user - when != address(0x0), other users are removed from whitelist
  ///        intended for short term use during incidence response, escrow, migration
  address public exclusiveUser;

  ///@notice guard authorization
  mapping(address => bool) public isGuard;

  ///@notice keeper authorization
  mapping(address => bool) public isKeeper;

  ///@notice user authorization, can use deposit, withdraw
  mapping(address => bool) public isUser;

  ///@notice swapper authorization, can use swap
  mapping(address => bool) public isSwapper;

  ///@notice incentive manager authorization, can set incentives for swaps on Fyde
  mapping(address => bool) public isIncentiveManager;

  /*//////////////////////////////////////////////////////////////
                                 EVENTS
    //////////////////////////////////////////////////////////////*/

  event ExclusiveUserSet(address indexed);
  event GuardAdded(address indexed);
  event GuardRemoved(address indexed);
  event KeeperAdded(address indexed);
  event KeeperRemoved(address indexed);
  event UserAdded(address indexed);
  event UserRemoved(address indexed);
  event IncentiveManagerAdded(address indexed);
  event IncentiveManagerRemoved(address indexed);
  event SwapperAdded(address indexed);
  event SwapperRemoved(address indexed);

  /*//////////////////////////////////////////////////////////////
                               SETTER
    //////////////////////////////////////////////////////////////*/

  function setExclusiveUser(address _exclusiveUser) external onlyOwner {
    exclusiveUser = _exclusiveUser;
    emit ExclusiveUserSet(_exclusiveUser);
  }

  function addGuard(address _guard) external onlyOwner {
    isGuard[_guard] = true;
    emit GuardAdded(_guard);
  }

  function removeGuard(address _guard) external onlyOwner {
    isGuard[_guard] = false;
    emit GuardRemoved(_guard);
  }

  function addKeeper(address _keeper) external onlyOwner {
    isKeeper[_keeper] = true;
    emit KeeperAdded(_keeper);
  }

  function removeKeeper(address _keeper) external onlyOwner {
    isKeeper[_keeper] = false;
    emit KeeperRemoved(_keeper);
  }

  function addUser(address[] calldata _user) external onlyOwner {
    for (uint256 i; i < _user.length; ++i) {
      isUser[_user[i]] = true;
      emit UserAdded(_user[i]);
    }
  }

  function removeUser(address[] calldata _user) external onlyOwner {
    for (uint256 i; i < _user.length; ++i) {
      isUser[_user[i]] = false;
      emit UserRemoved(_user[i]);
    }
  }

  function addIncentiveManager(address _incentiveManager) external onlyOwner {
    isIncentiveManager[_incentiveManager] = true;
    emit IncentiveManagerAdded(_incentiveManager);
  }

  function removeIncentiveManager(address _incentiveManager) external onlyOwner {
    isIncentiveManager[_incentiveManager] = false;
    emit IncentiveManagerRemoved(_incentiveManager);
  }

  function addSwapper(address _swapper) external onlyOwner {
    isSwapper[_swapper] = true;
    emit SwapperAdded(_swapper);
  }

  function removeSwapper(address _swapper) external onlyOwner {
    isSwapper[_swapper] = false;
    emit SwapperRemoved(_swapper);
  }

  /*//////////////////////////////////////////////////////////////
                               MODIFIER
    //////////////////////////////////////////////////////////////*/

  ///@notice only a registered keeper can access
  modifier onlyKeeper() {
    if (!isKeeper[msg.sender]) revert Unauthorized();
    _;
  }

  ///@notice only a registered guard can access
  modifier onlyGuard() {
    if (!isGuard[msg.sender]) revert Unauthorized();
    _;
  }

  ///@dev whitelisting address(0x0) disables whitelist -> full permissionless access
  ///@dev setting exclusiveUser to != address(0x0) blocks everyone else
  ///     - intended for escrow, incidence response and migration
  modifier onlyUser() {
    // if whitelist is not disabeld and user not whitelisted -> no access
    if (!isUser[address(0x0)] && !isUser[msg.sender]) revert Unauthorized();
    // if exclusive user exists and is not user -> no accesss
    if (exclusiveUser != address(0x0) && exclusiveUser != msg.sender) revert Unauthorized();
    _;
  }

  ///@dev whitelisting address(0x0) disables whitelist -> full permissionless access
  ///@dev setting exclusiveUser to != address(0x0) blocks everyone else
  ///     - intended for escrow, incidence response and migration
  modifier onlySwapper() {
    if (!isSwapper[address(0x0)] && !isSwapper[msg.sender]) revert Unauthorized();
    if (exclusiveUser != address(0x0) && exclusiveUser != msg.sender) revert Unauthorized();
    _;
  }
}

// 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);
        }
    }
}

// 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 v4.9.0) (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.
 */
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].
     */
    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: UNLICENSED
pragma solidity 0.8.19;

import {RequestData, RebalanceParam, ProcessParam, AssetInfo} from "src/core/Structs.sol";

interface IFyde {
  function protocolData() external view returns (uint256, uint72, uint16, uint48, uint72, uint48);

  function assetInfo(address) external view returns (AssetInfo memory);

  function isAnyNotSupported(address[] calldata _assets) external view returns (address);

  function isSwapAllowed(address[] calldata _assets) external view returns (address);

  function computeProtocolAUM() external view returns (uint256);

  function getProtocolAUM() external view returns (uint256);

  function updateProtocolAUM(uint256) external;

  function processDeposit(uint256, RequestData calldata) external returns (uint256);

  function processWithdraw(uint256, RequestData calldata) external returns (uint256);

  function totalSupply() external view returns (uint256);

  function setOracleModule(address _oracle) external;

  function oracleModule() external view returns (address);

  function setRelayer(address _relayer) external;

  function RELAYER() external view returns (address);

  function totalAssetAccounting(address) external view returns (uint256);

  function proxyAssetAccounting(address) external view returns (uint256);

  function standardAssetAccounting(address) external view returns (uint256);

  function getQuote(address, uint256) external view returns (uint256);

  function getAssetDecimals(address) external view returns (uint8);

  function collectManagementFee() external;

  function getAssetsListLength() external view returns (uint256);

  function assetsList(uint256 index) external view returns (address);

  function processSwap(uint256, RequestData calldata) external returns (int256);

  function owner() external view returns (address);

  function getProcessParamDeposit(RequestData memory _req, uint256 _protocolAUM)
    external
    view
    returns (
      ProcessParam[] memory processParam,
      uint256 sharesToMint,
      uint256 taxInTRSY,
      uint256 totalUsdDeposit
    );

  function getProcessParamWithdraw(RequestData calldata _req, uint256 _protocolAUM)
    external
    view
    returns (
      ProcessParam[] memory processParam,
      uint256 totalSharesToBurn,
      uint256 sharesToBurnBeforeTax,
      uint256 taxInTRSY,
      uint256 totalUsdWithdraw
    );

  function acceptOwnership() external;

  // GOVERNANCE ACCESS FUNCTIONS

  function transferAsset(address _asset, address _recipient, uint256 _amount) external;

  function getRebalanceParams(address _asset) external view returns (RebalanceParam memory);

  function updateAssetProxyAmount(address _asset, uint256 _amount) external;
}

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

interface IGovernanceModule {
  function fyde() external view returns (address);

  function proxyImplementation() external view returns (address);

  function proxyBalance(address proxy, address asset) external view returns (uint256);

  function strsyBalance(address _user, address _govToken) external view returns (uint256 balance);

  function assetToStrsy(address _asset) external view returns (address);

  function userToProxy(address _user) external view returns (address);

  function proxyToUser(address _proxy) external view returns (address);

  function isOnGovernanceWhitelist(address _asset) external view returns (bool);

  function getAllGovUsers() external view returns (address[] memory);

  function isAnyNotOnGovWhitelist(address[] calldata _assets) external view returns (address);

  function getUserGTAllowance(uint256 _TRSYAmount, address _token) external view returns (uint256);

  function govDeposit(
    address _depositor,
    address[] calldata _govToken,
    uint256[] calldata _amount,
    uint256[] calldata _amountTRSY,
    uint256 _totalTRSY
  ) external returns (address proxy);

  function govWithdraw(
    address _user,
    address _asset,
    uint256 _amountToWithdraw,
    uint256 _trsyToBurn
  ) external;

  function onStrsyTransfer(address sender, address _recipient) external;

  function unstakeGov(uint256 _amount, address _asset) external;

  function rebalanceProxy(address _proxy, address _asset, address[] memory _usersToRebalance)
    external;

  function acceptOwnership() external;
}

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

import {AssetInfo} from "../core/Structs.sol";

interface IOracle {
  function getPriceInUSD(address, AssetInfo calldata) external view returns (uint256);

  function getGweiPrice() external view returns (uint256);

  function useCache(address[] calldata addr, AssetInfo[] calldata assetInfo) external;

  function disableCache() external;
}

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

import {RequestData, ProcessParam} from "src/core/Structs.sol";

interface ITaxModule {
  function getProcessParamDeposit(RequestData memory _req, uint256 _protocolAUM)
    external
    view
    returns (
      ProcessParam[] memory processParam,
      uint256 sharesToMint,
      uint256 taxInTRSY,
      uint256 totalUsdDeposit
    );

  function getProcessParamWithdraw(RequestData calldata _req, uint256 _protocolAUM)
    external
    view
    returns (
      ProcessParam[] memory processParam,
      uint256 totalSharesToBurn,
      uint256 sharesToBurnBeforeTax,
      uint256 taxInTRSY,
      uint256 totalUsdWithdraw
    );

  function getSwapAmountOut(
    address _assetIn,
    uint256 _amountIn,
    address _assetOut,
    uint256 _protocolAUM
  ) external view returns (uint256, int256);
}

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

///@title Ownable contract
/// @notice Simple 2step owner authorization combining solmate and OZ implementation
abstract contract Ownable {
  /*//////////////////////////////////////////////////////////////
                             STORAGE
    //////////////////////////////////////////////////////////////*/

  ///@notice Address of the owner
  address public owner;

  ///@notice Address of the pending owner
  address public pendingOwner;

  /*//////////////////////////////////////////////////////////////
                                 EVENTS
    //////////////////////////////////////////////////////////////*/

  event OwnershipTransferred(address indexed user, address indexed newOner);
  event OwnershipTransferStarted(address indexed user, address indexed newOwner);
  event OwnershipTransferCanceled(address indexed pendingOwner);

  /*//////////////////////////////////////////////////////////////
                                 ERROR
    //////////////////////////////////////////////////////////////*/

  error Unauthorized();

  /*//////////////////////////////////////////////////////////////
                               CONSTRUCTOR
    //////////////////////////////////////////////////////////////*/

  constructor(address _owner) {
    owner = _owner;

    emit OwnershipTransferred(address(0), _owner);
  }

  /*//////////////////////////////////////////////////////////////
                             OWNERSHIP LOGIC
    //////////////////////////////////////////////////////////////*/

  ///@notice Transfer ownership to a new address
  ///@param newOwner address of the new owner
  ///@dev newOwner have to acceptOwnership
  function transferOwnership(address newOwner) external onlyOwner {
    pendingOwner = newOwner;
    emit OwnershipTransferStarted(msg.sender, pendingOwner);
  }

  ///@notice NewOwner accept the ownership, it transfer the ownership to newOwner
  function acceptOwnership() external {
    if (msg.sender != pendingOwner) revert Unauthorized();
    address oldOwner = owner;
    owner = pendingOwner;
    delete pendingOwner;
    emit OwnershipTransferred(oldOwner, owner);
  }

  ///@notice Cancel the ownership transfer
  function cancelTransferOwnership() external onlyOwner {
    emit OwnershipTransferCanceled(pendingOwner);
    delete pendingOwner;
  }

  modifier onlyOwner() {
    if (msg.sender != owner) revert Unauthorized();
    _;
  }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.19;

library PercentageMath {
  ///	CONSTANTS ///

  uint256 internal constant PERCENTAGE_FACTOR = 1e4; // 100.00%
  uint256 internal constant HALF_PERCENTAGE_FACTOR = 0.5e4; // 50.00%
  uint256 internal constant MAX_UINT256 = 2 ** 256 - 1;
  uint256 internal constant MAX_UINT256_MINUS_HALF_PERCENTAGE = 2 ** 256 - 1 - 0.5e4;

  /// INTERNAL ///

  ///@notice Check if value are within the range
  function _isInRange(uint256 valA, uint256 valB, uint256 deviationThreshold)
    internal
    pure
    returns (bool)
  {
    uint256 lowerBound = percentSub(valA, deviationThreshold);
    uint256 upperBound = percentAdd(valA, deviationThreshold);
    if (valB < lowerBound || valB > upperBound) return false;
    else return true;
  }

  /// @notice Executes a percentage addition (x * (1 + p)), rounded up.
  /// @param x The value to which to add the percentage.
  /// @param percentage The percentage of the value to add.
  /// @return y The result of the addition.
  function percentAdd(uint256 x, uint256 percentage) internal pure returns (uint256 y) {
    // Must revert if
    // PERCENTAGE_FACTOR + percentage > type(uint256).max
    //     or x * (PERCENTAGE_FACTOR + percentage) + HALF_PERCENTAGE_FACTOR > type(uint256).max
    // <=> percentage > type(uint256).max - PERCENTAGE_FACTOR
    //     or x > (type(uint256).max - HALF_PERCENTAGE_FACTOR) / (PERCENTAGE_FACTOR + percentage)
    // Note: PERCENTAGE_FACTOR + percentage >= PERCENTAGE_FACTOR > 0
    assembly {
      y := add(PERCENTAGE_FACTOR, percentage) // Temporary assignment to save gas.

      if or(
        gt(percentage, sub(MAX_UINT256, PERCENTAGE_FACTOR)),
        gt(x, div(MAX_UINT256_MINUS_HALF_PERCENTAGE, y))
      ) { revert(0, 0) }

      y := div(add(mul(x, y), HALF_PERCENTAGE_FACTOR), PERCENTAGE_FACTOR)
    }
  }

  /// @notice Executes a percentage subtraction (x * (1 - p)), rounded up.
  /// @param x The value to which to subtract the percentage.
  /// @param percentage The percentage of the value to subtract.
  /// @return y The result of the subtraction.
  function percentSub(uint256 x, uint256 percentage) internal pure returns (uint256 y) {
    // Must revert if
    // percentage > PERCENTAGE_FACTOR
    //     or x * (PERCENTAGE_FACTOR - percentage) + HALF_PERCENTAGE_FACTOR > type(uint256).max
    // <=> percentage > PERCENTAGE_FACTOR
    //     or ((PERCENTAGE_FACTOR - percentage) > 0 and x > (type(uint256).max -
    // HALF_PERCENTAGE_FACTOR) / (PERCENTAGE_FACTOR - percentage))
    assembly {
      y := sub(PERCENTAGE_FACTOR, percentage) // Temporary assignment to save gas.

      if or(
        gt(percentage, PERCENTAGE_FACTOR), mul(y, gt(x, div(MAX_UINT256_MINUS_HALF_PERCENTAGE, y)))
      ) { revert(0, 0) }

      y := div(add(mul(x, y), HALF_PERCENTAGE_FACTOR), PERCENTAGE_FACTOR)
    }
  }
}

// SPDX-License-Identifier: BUSL-1.1

pragma solidity 0.8.19;

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

///@title QuarantineList contract
///@notice Handle the logic for the quarantine list
abstract contract QuarantineList is AccessControl {
  /// -----------------------------
  ///         Storage
  /// -----------------------------
  uint256 public min_quarantine_duration = 1 days;
  mapping(address => uint128) public quarantineList;

  /// -----------------------------
  ///         Events
  /// -----------------------------

  event AddedToQuarantine(address asset, uint128 expirationTime);
  event RemovedFromQuarantine(address asset);
  /// -----------------------------
  ///         Errors
  /// -----------------------------

  error AssetIsQuarantined(address asset);
  error AssetIsNotQuarantined(address asset);
  error ShortenedExpiration(uint128 currentExpiration, uint128 expiration);
  error ShortQurantineDuration(uint128 duration);

  /// -----------------------------
  ///         Admin external
  /// -----------------------------

  ///@notice Set the minimum quarantine duration
  ///@param _min_quarantine_duration the new minimum quarantine duration
  function set_min_quarantine_duration(uint256 _min_quarantine_duration) external onlyOwner {
    min_quarantine_duration = _min_quarantine_duration;
  }

  ///@notice Add an asset to the quarantine list
  ///@param _asset the address of the assset to be added to the quarantine list
  ///@param _duration the time (in seconds) that the asset should stay in quarantine
  function addToQuarantine(address _asset, uint128 _duration) external onlyGuard {
    if (_duration < min_quarantine_duration) revert ShortQurantineDuration(_duration);

    // gas savings
    uint128 expiration = uint128(block.timestamp) + _duration;
    uint128 currentExpiration = quarantineList[_asset];

    // the new expiration cannot be before the curent one i.e. expiration cannot be reduced, just
    // extended
    if (expiration <= currentExpiration) revert ShortenedExpiration(currentExpiration, expiration);

    quarantineList[_asset] = expiration;

    emit AddedToQuarantine(_asset, expiration);
  }

  ///@notice Remove an asset from the quarantine list
  ///@param _asset the address of the assset to be removed from the quarantine list
  function removeFromQuarantine(address _asset) external onlyGuard {
    // If the asset has nto been quarantined or the duarion period has expired then revert
    if (quarantineList[_asset] < uint128(block.timestamp)) revert AssetIsNotQuarantined(_asset);

    // just set the duration to zero to remove from quarantine
    quarantineList[_asset] = 0;
    emit RemovedFromQuarantine(_asset);
  }

  /// -----------------------------
  ///    External view functions
  /// -----------------------------

  ///@notice Check if an asset is quarantined
  ///@param _asset the address of the assset to be checked
  function isQuarantined(address _asset) public view returns (bool) {
    return quarantineList[_asset] >= uint128(block.timestamp);
  }

  ///@notice Check if any asset from a given list is quarantined
  ///@param _assets an array of asset addresses that need to be checked
  ///@return address of first quarantined asset or address(0x0) if none quarantined
  function isAnyQuarantined(address[] memory _assets) public view returns (address) {
    for (uint256 i = 0; i < _assets.length;) {
      if (isQuarantined(_assets[i])) return _assets[i];

      unchecked {
        ++i;
      }
    }
    return address(0x0);
  }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.19;

// Core
import {QuarantineList} from "./core/QuarantineList.sol";

// Structs
import {UserRequest, RequestData, ProcessParam, AssetInfo} from "./core/Structs.sol";

// Utils
import {Ownable} from "./utils/Ownable.sol";
import {PercentageMath} from "./utils/PercentageMath.sol";
import {SafeERC20} from "openzeppelin-contracts/token/ERC20/utils/SafeERC20.sol";

// Interfaces
import {IERC20} from "openzeppelin-contracts/token/ERC20/IERC20.sol";
import {IFyde} from "./interfaces/IFyde.sol";
import {IGovernanceModule} from "./interfaces/IGovernanceModule.sol";
import {IOracle} from "./interfaces/IOracle.sol";
import {ITaxModule} from "./interfaces/ITaxModule.sol";

///@title RelayerV2
///@notice The relayer is the entry point contract for users to interact with the protocol.
///        The relayer is monitored by an off-chain keeper that will update the protocol AUM.

contract RelayerV2 is QuarantineList {
  using SafeERC20 for IERC20;
  /*//////////////////////////////////////////////////////////////
                                 STORAGE
    //////////////////////////////////////////////////////////////*/

  ///@notice Fyde contract
  IFyde public fyde;

  ///@notice OracleModule contract
  IOracle public oracleModule;

  //@notice GovernanceModule contract
  IGovernanceModule public immutable GOVERNANCE_MODULE;

  //@notice calculates the tax for protocol actions
  ITaxModule public taxModule;

  ///@dev Only used for tracking events offchain
  uint32 public nonce;

  ///@notice Threshold of deviation for updating AUM
  uint16 public deviationThreshold;

  ///@notice State of the protocol
  bool public paused;

  //@notice Swap state
  bool public swapPaused;

  /*//////////////////////////////////////////////////////////////
                                 ERROR
    //////////////////////////////////////////////////////////////*/

  error ValueOutOfBounds();
  error ActionPaused();
  error SlippageExceed();
  error SwapDisabled(address asset);
  error AssetNotAllowedInGovernancePool(address asset);
  error DuplicatesAssets();

  /*//////////////////////////////////////////////////////////////
                                 EVENTS
    //////////////////////////////////////////////////////////////*/

  event Pause(uint256 timestamp);
  event Unpause(uint256 timestamp);
  event Deposit(uint32 requestId, RequestData request);
  event Withdraw(uint32 requestId, RequestData request);
  event Swap(uint32 requestId, RequestData request);

  /*//////////////////////////////////////////////////////////////
                            CONSTRUCTOR
    //////////////////////////////////////////////////////////////*/

  constructor(address _oracleModule, address _govModule, uint8 _deviationThreshold)
    Ownable(msg.sender)
  {
    oracleModule = IOracle(_oracleModule);
    GOVERNANCE_MODULE = IGovernanceModule(_govModule);
    updateDeviationThreshold(_deviationThreshold);
  }

  /*//////////////////////////////////////////////////////////////
                                GUARD
    //////////////////////////////////////////////////////////////*/

  ///@notice Pause the protocol
  function pauseProtocol() public onlyGuard {
    paused = true;
    emit Pause(block.timestamp);
  }

  ///@notice Pause the swaps
  function pauseSwap() external onlyGuard {
    swapPaused = true;
    emit Pause(block.timestamp);
  }

  /*//////////////////////////////////////////////////////////////
                                 OWNER
    //////////////////////////////////////////////////////////////*/

  ///@notice sets the addres of fyde contract
  ///@param _fyde address of fyde
  function setFyde(address _fyde) external onlyOwner {
    fyde = IFyde(_fyde);
  }

  ///@notice Set the oracle module
  function setOracleModule(address _oracleModule) external onlyOwner {
    oracleModule = IOracle(_oracleModule);
  }

  ///@notice Set the tax module
  function setTaxModule(address _taxModule) external onlyOwner {
    taxModule = ITaxModule(_taxModule);
  }

  ///@notice Change the deviation threshold
  ///@dev 50 = 0.5 % of deviation
  function updateDeviationThreshold(uint16 _threshold) public onlyOwner {
    // We bound the threshold between 0.1 % to 10%
    if (_threshold < 10 || _threshold > 1000) revert ValueOutOfBounds();
    deviationThreshold = _threshold;
  }

  ///@notice Approve Fyde to transfer token from relayer, should be called once per asset
  function approveFyde(address[] calldata _assets) external onlyOwner {
    for (uint256 i; i < _assets.length; ++i) {
      IERC20(_assets[i]).safeApprove(address(fyde), type(uint256).max);
    }
  }

  ///@notice Collect and send token fees (from tax fees) to an external address
  ///@param _asset Address to send fees to
  ///@param _recipient Address to send fees to
  ///@param _amount Amount to send
  function collectFees(address _asset, address _recipient, uint256 _amount) external onlyOwner {
    IERC20(_asset).safeTransfer(_recipient, _amount);
  }

  ///@notice Unpause the protocol
  function unpauseProtocol() external onlyOwner {
    paused = false;
    emit Unpause(block.timestamp);
  }

  ///@notice Unpause the swaps
  function unpauseSwap() external onlyOwner {
    swapPaused = false;
    emit Unpause(block.timestamp);
  }

  /*//////////////////////////////////////////////////////////////
                            EXT USER ENTRY POINT
    //////////////////////////////////////////////////////////////*/

  ///@notice Entry function for depositing, can be a standard deposit or a governance
  /// deposit
  ///@param _userRequest struct containing data
  ///@param _keepGovRights If true make a governance
  ///@param _minTRSYExpected Slippage parameter ensuring minimum amout of TRSY to be received
  function deposit(
    UserRequest[] calldata _userRequest,
    bool _keepGovRights,
    uint256 _minTRSYExpected
  ) external whenNotPaused onlyUser {
    address[] memory assetIn = new address[](_userRequest.length);
    uint256[] memory amountIn = new uint256[](_userRequest.length);

    for (uint256 i; i < _userRequest.length; ++i) {
      // Unpack data
      assetIn[i] = _userRequest[i].asset;
      amountIn[i] = _userRequest[i].amount;
    }

    _checkForDuplicates(assetIn);

    if (_keepGovRights) _checkIsAllowedInGov(assetIn);

    RequestData memory req = RequestData({
      id: nonce,
      requestor: address(this),
      assetIn: assetIn,
      amountIn: amountIn,
      assetOut: new address[](0),
      amountOut: new uint256[](0),
      keepGovRights: _keepGovRights,
      slippageChecker: _minTRSYExpected
    });

    nonce++;

    uint256 currentAUM = fyde.getProtocolAUM();

    // Cache prices in oracle (gas savings when fyde reads prices)
    _enableOracleCache(assetIn);

    // get params for tax calculation from tax module
    (ProcessParam[] memory processParam, uint256 sharesToMint,,) =
      taxModule.getProcessParamDeposit(req, currentAUM);

    // Slippage checker
    if (req.slippageChecker > sharesToMint) revert SlippageExceed();

    // Transfer assets to Relayer
    for (uint256 i; i < req.assetIn.length; ++i) {
      IERC20(req.assetIn[i]).safeTransferFrom(msg.sender, address(this), req.amountIn[i]);
    }

    // Deposit
    fyde.processDeposit(currentAUM, req);

    if (_keepGovRights) {
      for (uint256 i; i < processParam.length; ++i) {
        // send staked trsy to the user
        address sTrsy = GOVERNANCE_MODULE.assetToStrsy(req.assetIn[i]);
        uint256 strsyBal = IERC20(sTrsy).balanceOf(address(this));
        uint256 toTransfer =
          strsyBal >= processParam[i].sharesAfterTax ? processParam[i].sharesAfterTax : strsyBal;
        IERC20(sTrsy).transfer(msg.sender, toTransfer);

        // unstake tax amount to get standard trsy
        uint256 taxTrsy = strsyBal - toTransfer;
        if (taxTrsy != 0) GOVERNANCE_MODULE.unstakeGov(taxTrsy, req.assetIn[i]);
      }
    } else {
      // send trsy to user
      IERC20(address(fyde)).transfer(msg.sender, sharesToMint);
    }

    _disableOracleCache();

    emit Deposit(req.id, req);
  }

  ///@notice Entry function for withdrawing
  ///@param _userRequest struct containing data
  ///@param _maxTRSYToPay Slippage parameter ensure maximum amout of TRSY willing to pay
  function withdraw(UserRequest[] calldata _userRequest, uint256 _maxTRSYToPay)
    external
    whenNotPaused
    onlyUser
  {
    address[] memory assetOut = new address[](_userRequest.length);
    uint256[] memory amountOut = new uint256[](_userRequest.length);

    for (uint256 i; i < _userRequest.length; i++) {
      assetOut[i] = _userRequest[i].asset;
      amountOut[i] = _userRequest[i].amount;
    }

    _checkForDuplicates(assetOut);

    RequestData memory req = RequestData({
      id: nonce,
      requestor: address(this),
      assetIn: new address[](0),
      amountIn: new uint256[](0),
      assetOut: assetOut,
      amountOut: amountOut,
      keepGovRights: false,
      slippageChecker: _maxTRSYToPay
    });

    nonce++;

    uint256 currentAUM = fyde.getProtocolAUM();

    _enableOracleCache(assetOut);

    // get params for tax calculation from tax module
    (, uint256 totalSharesToBurn,,,) = taxModule.getProcessParamWithdraw(req, currentAUM);

    if (totalSharesToBurn > req.slippageChecker) revert SlippageExceed();

    // Transfer TRSY to Relayer
    IERC20(address(fyde)).transferFrom(msg.sender, address(this), totalSharesToBurn);

    // Withdraw
    fyde.processWithdraw(currentAUM, req);

    // Transfer assets to user
    for (uint256 i; i < req.assetOut.length; ++i) {
      IERC20(req.assetOut[i]).safeTransfer(msg.sender, req.amountOut[i]);
    }

    _disableOracleCache();

    emit Withdraw(req.id, req);
  }

  ///@notice Function used by user to make a (single-token) withdrawal from their governance proxy
  ///@param _userRequest struct containing data
  ///@param _user address of user who makes the withdraw
  ///@param _maxTRSYToPay maximum amout of stTRSY willing to pay, otherwise withdraw reverts
  ///@dev owner of fyde can force withdraw for other users
  function governanceWithdraw(UserRequest memory _userRequest, address _user, uint256 _maxTRSYToPay)
    external
    whenNotPaused
    onlyUser
  {
    if (msg.sender != _user && msg.sender != owner) revert Unauthorized();

    address[] memory assetOut = new address[](1);
    uint256[] memory amountOut = new uint256[](1);

    assetOut[0] = _userRequest.asset;
    amountOut[0] = _userRequest.amount;

    // for withdraw, assetIn and amountIn are set to empty array
    RequestData memory request = RequestData({
      id: nonce,
      requestor: _user,
      assetIn: new address[](0),
      amountIn: new uint256[](0),
      assetOut: assetOut,
      amountOut: amountOut,
      keepGovRights: true,
      slippageChecker: _maxTRSYToPay
    });

    nonce++;

    uint256 currentAUM = fyde.getProtocolAUM();

    fyde.processWithdraw(currentAUM, request);
    emit Withdraw(request.id, request);
  }

  /*//////////////////////////////////////////////////////////////
                               SWAP
    //////////////////////////////////////////////////////////////*/

  function swap(address _assetIn, uint256 _amountIn, address _assetOut, uint256 _minAmountOut)
    external
    whenSwapNotPaused
    onlySwapper
  {
    address[] memory assetIn = new address[](1);
    uint256[] memory amountIn = new uint256[](1);
    address[] memory assetOut = new address[](1);
    uint256[] memory amountOut = new uint256[](1);

    assetIn[0] = _assetIn;
    amountIn[0] = _amountIn;
    assetOut[0] = _assetOut;

    RequestData memory req = RequestData({
      id: nonce,
      requestor: address(this),
      assetIn: assetIn,
      amountIn: amountIn,
      assetOut: assetOut,
      amountOut: amountOut,
      keepGovRights: false,
      slippageChecker: _minAmountOut
    });

    nonce++;

    uint256 currentAUM = fyde.getProtocolAUM();

    address[] memory assetsSwap = new address[](2);
    assetsSwap[0] = _assetIn;
    assetsSwap[1] = _assetOut;

    _enableOracleCache(assetsSwap);

    // get params for tax calculation from taxModule
    (uint256 amountOutTaxed,) =
      taxModule.getSwapAmountOut(req.assetIn[0], req.amountIn[0], req.assetOut[0], currentAUM);

    // Transfer asset to Relayer
    IERC20(req.assetIn[0]).safeTransferFrom(msg.sender, address(this), req.amountIn[0]);

    fyde.processSwap(currentAUM, req);

    uint256 tokenBalance = IERC20(assetOut[0]).balanceOf(address(this));

    amountOutTaxed = amountOutTaxed > tokenBalance ? tokenBalance : amountOutTaxed;
    if (amountOutTaxed < req.slippageChecker) revert SlippageExceed();

    // Transfer assets to swapper
    IERC20(req.assetOut[0]).safeTransfer(msg.sender, amountOutTaxed);

    emit Swap(req.id, req);

    // deposit tax to receive trsy
    amountIn[0] = tokenBalance - amountOutTaxed;
    if (amountIn[0] > 0) {
      req = RequestData({
        id: nonce,
        requestor: address(this),
        assetIn: assetOut,
        amountIn: amountIn,
        assetOut: new address[](0),
        amountOut: new uint256[](0),
        keepGovRights: false,
        slippageChecker: 0
      });

      nonce++;

      currentAUM = fyde.getProtocolAUM();
      fyde.processDeposit(currentAUM, req);
    }

    _disableOracleCache();
  }

  /*//////////////////////////////////////////////////////////////
                            Keeper FUNCTIONS
    //////////////////////////////////////////////////////////////*/

  ///@notice Offchain checker for AUM deviation
  function checkUpkeep(bytes calldata checkData)
    external
    view
    returns (bool upkeepNeeded, bytes memory performData)
  {
    (uint256 updateFactor, uint256 pauseFactor, bool isChainlink) =
      abi.decode(checkData, (uint256, uint256, bool));

    uint256 aum = fyde.getProtocolAUM();
    uint256 nAum = fyde.computeProtocolAUM();

    // AUM in range of deviation threshold times update factor do nothing
    if (PercentageMath._isInRange(aum, nAum, updateFactor * deviationThreshold / 100)) {
      return (false, "AUM is in range");
    }

    // if stored AUM exceeds the maximum deviation threshold by the pause factor
    // something is wrong and we stop the protocol
    if (!PercentageMath._isInRange(aum, nAum, pauseFactor * deviationThreshold / 100) && !paused) {
      if (isChainlink) return (true, abi.encode(false, 0));
      return (true, abi.encodeCall(this.performUpkeep, (abi.encode(false, 0))));
    }

    // if not in range and not outside the wider range, update AUM
    int256 diffAUM = int256(nAum) - int256(aum);
    if (isChainlink) return (true, abi.encode(true, diffAUM));
    return (true, abi.encodeCall(this.performUpkeep, (abi.encode(true, diffAUM))));
  }

  function performUpkeep(bytes calldata performData) external {
    (bool updateAum, int256 diffAUM) = abi.decode(performData, (bool, int256));

    if (!updateAum) {
      pauseProtocol();
    } else {
      uint256 nAum = uint256(int256(fyde.getProtocolAUM()) + diffAUM);
      updateProtocolAUM(nAum);
    }
  }

  ///@notice Update the protocol AUM, called by Keeper
  function updateProtocolAUM(uint256 nAum) public onlyKeeper {
    fyde.updateProtocolAUM(nAum);
  }
  /*//////////////////////////////////////////////////////////////
                                 INTERNAL
    //////////////////////////////////////////////////////////////*/

  function _enableOracleCache(address[] memory assets) internal {
    AssetInfo[] memory assetInfos = new AssetInfo[](assets.length);
    for (uint256 i; i < assets.length; ++i) {
      assetInfos[i] = fyde.assetInfo(assets[i]);
    }
    oracleModule.useCache(assets, assetInfos);
  }

  function _disableOracleCache() internal {
    oracleModule.disableCache();
  }

  function _checkIsAllowedInGov(address[] memory _assets) internal view {
    address notAllowedInGovAsset = GOVERNANCE_MODULE.isAnyNotOnGovWhitelist(_assets);
    if (notAllowedInGovAsset != address(0x0)) {
      revert AssetNotAllowedInGovernancePool(notAllowedInGovAsset);
    }
  }

  function _checkForDuplicates(address[] memory _assetList) internal pure {
    for (uint256 idx; idx < _assetList.length - 1; idx++) {
      for (uint256 idx2 = idx + 1; idx2 < _assetList.length; idx2++) {
        if (_assetList[idx] == _assetList[idx2]) revert DuplicatesAssets();
      }
    }
  }

  function _uint2str(uint256 _i) internal pure returns (string memory) {
    if (_i == 0) return "0";
    uint256 j = _i;
    uint256 len;
    while (j != 0) {
      len++;
      j /= 10;
    }
    bytes memory bstr = new bytes(len);
    uint256 k = len;
    while (_i != 0) {
      k = k - 1;
      uint8 temp = (48 + uint8(_i - (_i / 10) * 10));
      bytes1 b1 = bytes1(temp);
      bstr[k] = b1;
      _i /= 10;
    }
    return string(bstr);
  }

  modifier whenNotPaused() {
    if (paused) revert ActionPaused();
    _;
  }

  modifier whenSwapNotPaused() {
    if (swapPaused) revert ActionPaused();
    _;
  }
}

// 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: BUSL-1.1
pragma solidity 0.8.19;

struct AssetInfo {
  uint72 targetConcentration;
  address uniswapPool;
  int72 incentiveFactor;
  uint8 assetDecimals;
  uint8 quoteTokenDecimals;
  address uniswapQuoteToken;
  bool isSupported;
}

struct ProtocolData {
  ///@notice Protocol AUM in USD
  uint256 aum;
  ///@notice multiplicator for the tax equation, 100% = 100e18
  uint72 taxFactor;
  ///@notice Max deviation allowed between AUM from keeper and registry
  uint16 maxAumDeviationAllowed; // Default val 200 == 2 %
  ///@notice block number where AUM was last updated
  uint48 lastAUMUpdateBlock;
  ///@notice annual fee on AUM, in % per year 100% = 100e18
  uint72 managementFee;
  ///@notice last block.timestamp when fee was collected
  uint48 lastFeeCollectionTime;
}

struct UserRequest {
  address asset;
  uint256 amount;
}

struct RequestData {
  uint32 id;
  address requestor;
  address[] assetIn;
  uint256[] amountIn;
  address[] assetOut;
  uint256[] amountOut;
  bool keepGovRights;
  uint256 slippageChecker;
}

struct RequestQ {
  uint64 start;
  uint64 end;
  mapping(uint64 => RequestData) requestData;
}

struct ProcessParam {
  uint256 targetConc;
  uint256 currentConc;
  uint256 usdValue;
  uint256 taxableAmount;
  uint256 taxInUSD;
  uint256 sharesBeforeTax;
  uint256 sharesAfterTax;
}

struct RebalanceParam {
  address asset;
  uint256 assetTotalAmount;
  uint256 assetProxyAmount;
  uint256 assetPrice;
  uint256 sTrsyTotalSupply;
  uint256 trsyPrice;
}

{
  "compilationTarget": {
    "src/RelayerV2.sol": "RelayerV2"
  },
  "evmVersion": "paris",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": [
    ":@uniswap/v3-core/=lib/v3-core/",
    ":@uniswap/v3-periphery/=lib/v3-periphery/",
    ":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-upgradeable/=lib/openzeppelin-contracts-upgradeable/",
    ":openzeppelin-contracts/=lib/openzeppelin-contracts/contracts/",
    ":openzeppelin/=lib/openzeppelin-contracts/contracts/",
    ":solmate/=lib/solmate/src/",
    ":synthetix-v3/=lib/synthetix-v3/",
    ":v3-core/=lib/v3-core/contracts/",
    ":v3-periphery/=lib/v3-periphery/contracts/"
  ]
}