// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;
contract Events {
    event LogSetAdmin(address oldAdmin_, address newAdmin_);
    event LogSetDummyImplementation(
        address oldDummyImplementation_,
        address newDummyImplementation_
    );
    event LogSetImplementation(address implementation_, bytes4[] sigs_);
    event LogRemoveImplementation(address implementation_);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;
import { Events } from "./events.sol";
contract CoreInternals is Events {
    struct AddressSlot {
        address value;
    }
    struct SigsSlot {
        bytes4[] value;
    }
    /// @dev Storage slot with the admin of the contract.
    /// This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
    /// validated in the constructor.
    bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
    /// @dev Storage slot with the address of the current dummy-implementation.
    /// This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
    /// validated in the constructor.
    bytes32 internal constant _DUMMY_IMPLEMENTATION_SLOT =
        0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
    /// @dev Returns the storage slot which stores the sigs array set for the implementation.
    function getSlotImplSigsSlotInternal(address implementation_) internal pure returns (bytes32) {
        return keccak256(abi.encode("eip1967.proxy.implementation", implementation_));
    }
    /// @dev Returns the storage slot which stores the implementation address for the function sig.
    function getSlotSigsImplSlotInternal(bytes4 sig_) internal pure returns (bytes32) {
        return keccak256(abi.encode("eip1967.proxy.implementation", sig_));
    }
    /// @dev Returns an `AddressSlot` with member `value` located at `slot`.
    function getAddressSlotInternal(bytes32 slot_) internal pure returns (AddressSlot storage _r) {
        assembly {
            _r.slot := slot_
        }
    }
    /// @dev Returns an `SigsSlot` with member `value` located at `slot`.
    function getSigsSlotInternal(bytes32 slot_) internal pure returns (SigsSlot storage _r) {
        assembly {
            _r.slot := slot_
        }
    }
    /// @dev Sets new implementation and adds mapping from implementation to sigs and sig to implementation.
    function setImplementationSigsInternal(address implementation_, bytes4[] memory sigs_) internal {
        require(sigs_.length != 0, "no-sigs");
        bytes32 slot_ = getSlotImplSigsSlotInternal(implementation_);
        bytes4[] memory sigsCheck_ = getSigsSlotInternal(slot_).value;
        require(sigsCheck_.length == 0, "implementation-already-exist");
        for (uint256 i; i < sigs_.length; i++) {
            bytes32 sigSlot_ = getSlotSigsImplSlotInternal(sigs_[i]);
            require(getAddressSlotInternal(sigSlot_).value == address(0), "sig-already-exist");
            getAddressSlotInternal(sigSlot_).value = implementation_;
        }
        getSigsSlotInternal(slot_).value = sigs_;
        emit LogSetImplementation(implementation_, sigs_);
    }
    /// @dev Removes implementation and the mappings corresponding to it.
    function removeImplementationSigsInternal(address implementation_) internal {
        bytes32 slot_ = getSlotImplSigsSlotInternal(implementation_);
        bytes4[] memory sigs_ = getSigsSlotInternal(slot_).value;
        require(sigs_.length != 0, "implementation-not-exist");
        for (uint256 i; i < sigs_.length; i++) {
            bytes32 sigSlot_ = getSlotSigsImplSlotInternal(sigs_[i]);
            delete getAddressSlotInternal(sigSlot_).value;
        }
        delete getSigsSlotInternal(slot_).value;
        emit LogRemoveImplementation(implementation_);
    }
    /// @dev Returns bytes4[] sigs from implementation address. If implemenatation is not registered then returns empty array.
    function getImplementationSigsInternal(address implementation_) internal view returns (bytes4[] memory) {
        bytes32 slot_ = getSlotImplSigsSlotInternal(implementation_);
        return getSigsSlotInternal(slot_).value;
    }
    /// @dev Returns implementation address from bytes4 sig. If sig is not registered then returns address(0).
    function getSigImplementationInternal(bytes4 sig_) internal view returns (address implementation_) {
        bytes32 slot_ = getSlotSigsImplSlotInternal(sig_);
        return getAddressSlotInternal(slot_).value;
    }
    /// @dev Returns the current admin.
    function getAdminInternal() internal view returns (address) {
        return getAddressSlotInternal(_ADMIN_SLOT).value;
    }
    /// @dev Returns the current dummy-implementation.
    function getDummyImplementationInternal() internal view returns (address) {
        return getAddressSlotInternal(_DUMMY_IMPLEMENTATION_SLOT).value;
    }
    /// @dev Stores a new address in the EIP1967 admin slot.
    function setAdminInternal(address newAdmin_) internal {
        address oldAdmin_ = getAdminInternal();
        require(newAdmin_ != address(0), "ERC1967: new admin is the zero address");
        getAddressSlotInternal(_ADMIN_SLOT).value = newAdmin_;
        emit LogSetAdmin(oldAdmin_, newAdmin_);
    }
    /// @dev Stores a new address in the EIP1967 implementation slot.
    function setDummyImplementationInternal(address newDummyImplementation_) internal {
        address oldDummyImplementation_ = getDummyImplementationInternal();
        getAddressSlotInternal(_DUMMY_IMPLEMENTATION_SLOT).value = newDummyImplementation_;
        emit LogSetDummyImplementation(oldDummyImplementation_, newDummyImplementation_);
    }
    /// @dev Delegates the current call to `implementation`.
    /// This function does not return to its internall call site, it will return directly to the external caller.
    function delegateInternal(address implementation_) internal {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())
            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas(), implementation_, 0, calldatasize(), 0, 0)
            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())
            switch result
            // delegatecall returns 0 on error.
            case 0 {
                revert(0, returndatasize())
            }
            default {
                return(0, returndatasize())
            }
        }
    }
    /// @dev Delegates the current call to the address returned by Implementations registry.
    /// This function does not return to its internall call site, it will return directly to the external caller.
    function fallbackInternal(bytes4 sig_) internal {
        address implementation_ = getSigImplementationInternal(sig_);
        require(implementation_ != address(0), "Liquidity: Not able to find implementation_");
        delegateInternal(implementation_);
    }
}
contract AdminInternals is CoreInternals {
    /// @dev Only admin guard
    modifier onlyAdmin() {
        require(msg.sender == getAdminInternal(), "only-admin");
        _;
    }
    constructor(address admin_, address dummyImplementation_) {
        setAdminInternal(admin_);
        setDummyImplementationInternal(dummyImplementation_);
    }
    /// @dev Sets new admin.
    function setAdmin(address newAdmin_) external onlyAdmin {
        setAdminInternal(newAdmin_);
    }
    /// @dev Sets new dummy-implementation.
    function setDummyImplementation(address newDummyImplementation_) external onlyAdmin {
        setDummyImplementationInternal(newDummyImplementation_);
    }
    /// @dev Adds new implementation address.
    function addImplementation(address implementation_, bytes4[] calldata sigs_) external onlyAdmin {
        setImplementationSigsInternal(implementation_, sigs_);
    }
    /// @dev Removes an existing implementation address.
    function removeImplementation(address implementation_) external onlyAdmin {
        removeImplementationSigsInternal(implementation_);
    }
}
/// @title Proxy
/// @notice This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
abstract contract Proxy is AdminInternals {
    constructor(address admin_, address dummyImplementation_) AdminInternals(admin_, dummyImplementation_) {}
    /// @dev Returns admin's address.
    function getAdmin() external view returns (address) {
        return getAdminInternal();
    }
    /// @dev Returns dummy-implementations's address.
    function getDummyImplementation() external view returns (address) {
        return getDummyImplementationInternal();
    }
    /// @dev Returns bytes4[] sigs from implementation address If not registered then returns empty array.
    function getImplementationSigs(address impl_) external view returns (bytes4[] memory) {
        return getImplementationSigsInternal(impl_);
    }
    /// @dev Returns implementation address from bytes4 sig. If sig is not registered then returns address(0).
    function getSigsImplementation(bytes4 sig_) external view returns (address) {
        return getSigImplementationInternal(sig_);
    }
    /// @dev Fallback function that delegates calls to the address returned by Implementations registry.
    fallback() external payable {
        fallbackInternal(msg.sig);
    }
    /// @dev Fallback function that delegates calls to the address returned by Implementations registry.
    receive() external payable {
        if (msg.sig != 0x00000000) {
            fallbackInternal(msg.sig);
        }
    }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;
import "../../infiniteProxy/proxy.sol";
contract Vault is Proxy {
    constructor(address admin_, address dummyImplementation_)
        Proxy(admin_, dummyImplementation_)
    {}
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC20.sol)
pragma solidity ^0.8.0;
import "../token/ERC20/IERC20Upgradeable.sol";
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (interfaces/IERC4626.sol)
pragma solidity ^0.8.0;
import "../token/ERC20/IERC20Upgradeable.sol";
import "../token/ERC20/extensions/IERC20MetadataUpgradeable.sol";
/**
 * @dev Interface of the ERC4626 "Tokenized Vault Standard", as defined in
 * https://eips.ethereum.org/EIPS/eip-4626[ERC-4626].
 *
 * _Available since v4.7._
 */
interface IERC4626Upgradeable is IERC20Upgradeable, IERC20MetadataUpgradeable {
    event Deposit(address indexed sender, address indexed owner, uint256 assets, uint256 shares);
    event Withdraw(
        address indexed sender,
        address indexed receiver,
        address indexed owner,
        uint256 assets,
        uint256 shares
    );
    /**
     * @dev Returns the address of the underlying token used for the Vault for accounting, depositing, and withdrawing.
     *
     * - MUST be an ERC-20 token contract.
     * - MUST NOT revert.
     */
    function asset() external view returns (address assetTokenAddress);
    /**
     * @dev Returns the total amount of the underlying asset that is “managed” by Vault.
     *
     * - SHOULD include any compounding that occurs from yield.
     * - MUST be inclusive of any fees that are charged against assets in the Vault.
     * - MUST NOT revert.
     */
    function totalAssets() external view returns (uint256 totalManagedAssets);
    /**
     * @dev Returns the amount of shares that the Vault would exchange for the amount of assets provided, in an ideal
     * scenario where all the conditions are met.
     *
     * - MUST NOT be inclusive of any fees that are charged against assets in the Vault.
     * - MUST NOT show any variations depending on the caller.
     * - MUST NOT reflect slippage or other on-chain conditions, when performing the actual exchange.
     * - MUST NOT revert.
     *
     * NOTE: This calculation MAY NOT reflect the “per-user” price-per-share, and instead should reflect the
     * “average-user’s” price-per-share, meaning what the average user should expect to see when exchanging to and
     * from.
     */
    function convertToShares(uint256 assets) external view returns (uint256 shares);
    /**
     * @dev Returns the amount of assets that the Vault would exchange for the amount of shares provided, in an ideal
     * scenario where all the conditions are met.
     *
     * - MUST NOT be inclusive of any fees that are charged against assets in the Vault.
     * - MUST NOT show any variations depending on the caller.
     * - MUST NOT reflect slippage or other on-chain conditions, when performing the actual exchange.
     * - MUST NOT revert.
     *
     * NOTE: This calculation MAY NOT reflect the “per-user” price-per-share, and instead should reflect the
     * “average-user’s” price-per-share, meaning what the average user should expect to see when exchanging to and
     * from.
     */
    function convertToAssets(uint256 shares) external view returns (uint256 assets);
    /**
     * @dev Returns the maximum amount of the underlying asset that can be deposited into the Vault for the receiver,
     * through a deposit call.
     *
     * - MUST return a limited value if receiver is subject to some deposit limit.
     * - MUST return 2 ** 256 - 1 if there is no limit on the maximum amount of assets that may be deposited.
     * - MUST NOT revert.
     */
    function maxDeposit(address receiver) external view returns (uint256 maxAssets);
    /**
     * @dev Allows an on-chain or off-chain user to simulate the effects of their deposit at the current block, given
     * current on-chain conditions.
     *
     * - MUST return as close to and no more than the exact amount of Vault shares that would be minted in a deposit
     *   call in the same transaction. I.e. deposit should return the same or more shares as previewDeposit if called
     *   in the same transaction.
     * - MUST NOT account for deposit limits like those returned from maxDeposit and should always act as though the
     *   deposit would be accepted, regardless if the user has enough tokens approved, etc.
     * - MUST be inclusive of deposit fees. Integrators should be aware of the existence of deposit fees.
     * - MUST NOT revert.
     *
     * NOTE: any unfavorable discrepancy between convertToShares and previewDeposit SHOULD be considered slippage in
     * share price or some other type of condition, meaning the depositor will lose assets by depositing.
     */
    function previewDeposit(uint256 assets) external view returns (uint256 shares);
    /**
     * @dev Mints shares Vault shares to receiver by depositing exactly amount of underlying tokens.
     *
     * - MUST emit the Deposit event.
     * - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the
     *   deposit execution, and are accounted for during deposit.
     * - MUST revert if all of assets cannot be deposited (due to deposit limit being reached, slippage, the user not
     *   approving enough underlying tokens to the Vault contract, etc).
     *
     * NOTE: most implementations will require pre-approval of the Vault with the Vault’s underlying asset token.
     */
    function deposit(uint256 assets, address receiver) external returns (uint256 shares);
    /**
     * @dev Returns the maximum amount of the Vault shares that can be minted for the receiver, through a mint call.
     * - MUST return a limited value if receiver is subject to some mint limit.
     * - MUST return 2 ** 256 - 1 if there is no limit on the maximum amount of shares that may be minted.
     * - MUST NOT revert.
     */
    function maxMint(address receiver) external view returns (uint256 maxShares);
    /**
     * @dev Allows an on-chain or off-chain user to simulate the effects of their mint at the current block, given
     * current on-chain conditions.
     *
     * - MUST return as close to and no fewer than the exact amount of assets that would be deposited in a mint call
     *   in the same transaction. I.e. mint should return the same or fewer assets as previewMint if called in the
     *   same transaction.
     * - MUST NOT account for mint limits like those returned from maxMint and should always act as though the mint
     *   would be accepted, regardless if the user has enough tokens approved, etc.
     * - MUST be inclusive of deposit fees. Integrators should be aware of the existence of deposit fees.
     * - MUST NOT revert.
     *
     * NOTE: any unfavorable discrepancy between convertToAssets and previewMint SHOULD be considered slippage in
     * share price or some other type of condition, meaning the depositor will lose assets by minting.
     */
    function previewMint(uint256 shares) external view returns (uint256 assets);
    /**
     * @dev Mints exactly shares Vault shares to receiver by depositing amount of underlying tokens.
     *
     * - MUST emit the Deposit event.
     * - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the mint
     *   execution, and are accounted for during mint.
     * - MUST revert if all of shares cannot be minted (due to deposit limit being reached, slippage, the user not
     *   approving enough underlying tokens to the Vault contract, etc).
     *
     * NOTE: most implementations will require pre-approval of the Vault with the Vault’s underlying asset token.
     */
    function mint(uint256 shares, address receiver) external returns (uint256 assets);
    /**
     * @dev Returns the maximum amount of the underlying asset that can be withdrawn from the owner balance in the
     * Vault, through a withdraw call.
     *
     * - MUST return a limited value if owner is subject to some withdrawal limit or timelock.
     * - MUST NOT revert.
     */
    function maxWithdraw(address owner) external view returns (uint256 maxAssets);
    /**
     * @dev Allows an on-chain or off-chain user to simulate the effects of their withdrawal at the current block,
     * given current on-chain conditions.
     *
     * - MUST return as close to and no fewer than the exact amount of Vault shares that would be burned in a withdraw
     *   call in the same transaction. I.e. withdraw should return the same or fewer shares as previewWithdraw if
     *   called
     *   in the same transaction.
     * - MUST NOT account for withdrawal limits like those returned from maxWithdraw and should always act as though
     *   the withdrawal would be accepted, regardless if the user has enough shares, etc.
     * - MUST be inclusive of withdrawal fees. Integrators should be aware of the existence of withdrawal fees.
     * - MUST NOT revert.
     *
     * NOTE: any unfavorable discrepancy between convertToShares and previewWithdraw SHOULD be considered slippage in
     * share price or some other type of condition, meaning the depositor will lose assets by depositing.
     */
    function previewWithdraw(uint256 assets) external view returns (uint256 shares);
    /**
     * @dev Burns shares from owner and sends exactly assets of underlying tokens to receiver.
     *
     * - MUST emit the Withdraw event.
     * - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the
     *   withdraw execution, and are accounted for during withdraw.
     * - MUST revert if all of assets cannot be withdrawn (due to withdrawal limit being reached, slippage, the owner
     *   not having enough shares, etc).
     *
     * Note that some implementations will require pre-requesting to the Vault before a withdrawal may be performed.
     * Those methods should be performed separately.
     */
    function withdraw(uint256 assets, address receiver, address owner) external returns (uint256 shares);
    /**
     * @dev Returns the maximum amount of Vault shares that can be redeemed from the owner balance in the Vault,
     * through a redeem call.
     *
     * - MUST return a limited value if owner is subject to some withdrawal limit or timelock.
     * - MUST return balanceOf(owner) if owner is not subject to any withdrawal limit or timelock.
     * - MUST NOT revert.
     */
    function maxRedeem(address owner) external view returns (uint256 maxShares);
    /**
     * @dev Allows an on-chain or off-chain user to simulate the effects of their redeemption at the current block,
     * given current on-chain conditions.
     *
     * - MUST return as close to and no more than the exact amount of assets that would be withdrawn in a redeem call
     *   in the same transaction. I.e. redeem should return the same or more assets as previewRedeem if called in the
     *   same transaction.
     * - MUST NOT account for redemption limits like those returned from maxRedeem and should always act as though the
     *   redemption would be accepted, regardless if the user has enough shares, etc.
     * - MUST be inclusive of withdrawal fees. Integrators should be aware of the existence of withdrawal fees.
     * - MUST NOT revert.
     *
     * NOTE: any unfavorable discrepancy between convertToAssets and previewRedeem SHOULD be considered slippage in
     * share price or some other type of condition, meaning the depositor will lose assets by redeeming.
     */
    function previewRedeem(uint256 shares) external view returns (uint256 assets);
    /**
     * @dev Burns exactly shares from owner and sends assets of underlying tokens to receiver.
     *
     * - MUST emit the Withdraw event.
     * - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the
     *   redeem execution, and are accounted for during redeem.
     * - MUST revert if all of shares cannot be redeemed (due to withdrawal limit being reached, slippage, the owner
     *   not having enough shares, etc).
     *
     * NOTE: some implementations will require pre-requesting to the Vault before a withdrawal may be performed.
     * Those methods should be performed separately.
     */
    function redeem(uint256 shares, address receiver, address owner) external returns (uint256 assets);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (proxy/utils/Initializable.sol)
pragma solidity ^0.8.2;
import "../../utils/AddressUpgradeable.sol";
/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
 * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
 * case an upgrade adds a module that needs to be initialized.
 *
 * For example:
 *
 * [.hljs-theme-light.nopadding]
 * ```solidity
 * contract MyToken is ERC20Upgradeable {
 *     function initialize() initializer public {
 *         __ERC20_init("MyToken", "MTK");
 *     }
 * }
 *
 * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
 *     function initializeV2() reinitializer(2) public {
 *         __ERC20Permit_init("MyToken");
 *     }
 * }
 * ```
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
 * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() {
 *     _disableInitializers();
 * }
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     * @custom:oz-retyped-from bool
     */
    uint8 private _initialized;
    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;
    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint8 version);
    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts.
     *
     * Similar to `reinitializer(1)`, except that functions marked with `initializer` can be nested in the context of a
     * constructor.
     *
     * Emits an {Initialized} event.
     */
    modifier initializer() {
        bool isTopLevelCall = !_initializing;
        require(
            (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
            "Initializable: contract is already initialized"
        );
        _initialized = 1;
        if (isTopLevelCall) {
            _initializing = true;
        }
        _;
        if (isTopLevelCall) {
            _initializing = false;
            emit Initialized(1);
        }
    }
    /**
     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
     * used to initialize parent contracts.
     *
     * A reinitializer may be used after the original initialization step. This is essential to configure modules that
     * are added through upgrades and that require initialization.
     *
     * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
     * cannot be nested. If one is invoked in the context of another, execution will revert.
     *
     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
     * a contract, executing them in the right order is up to the developer or operator.
     *
     * WARNING: setting the version to 255 will prevent any future reinitialization.
     *
     * Emits an {Initialized} event.
     */
    modifier reinitializer(uint8 version) {
        require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
        _initialized = version;
        _initializing = true;
        _;
        _initializing = false;
        emit Initialized(version);
    }
    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} and {reinitializer} modifiers, directly or indirectly.
     */
    modifier onlyInitializing() {
        require(_initializing, "Initializable: contract is not initializing");
        _;
    }
    /**
     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called
     * through proxies.
     *
     * Emits an {Initialized} event the first time it is successfully executed.
     */
    function _disableInitializers() internal virtual {
        require(!_initializing, "Initializable: contract is initializing");
        if (_initialized != type(uint8).max) {
            _initialized = type(uint8).max;
            emit Initialized(type(uint8).max);
        }
    }
    /**
     * @dev Returns the highest version that has been initialized. See {reinitializer}.
     */
    function _getInitializedVersion() internal view returns (uint8) {
        return _initialized;
    }
    /**
     * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.
     */
    function _isInitializing() internal view returns (bool) {
        return _initializing;
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.sol)
pragma solidity ^0.8.0;
import "./IERC20Upgradeable.sol";
import "./extensions/IERC20MetadataUpgradeable.sol";
import "../../utils/ContextUpgradeable.sol";
import {Initializable} from "../../proxy/utils/Initializable.sol";
/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * The default value of {decimals} is 18. To change this, you should override
 * this function so it returns a different value.
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20Upgradeable is Initializable, ContextUpgradeable, IERC20Upgradeable, IERC20MetadataUpgradeable {
    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;
    uint256 private _totalSupply;
    string private _name;
    string private _symbol;
    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    function __ERC20_init(string memory name_, string memory symbol_) internal onlyInitializing {
        __ERC20_init_unchained(name_, symbol_);
    }
    function __ERC20_init_unchained(string memory name_, string memory symbol_) internal onlyInitializing {
        _name = name_;
        _symbol = symbol_;
    }
    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }
    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }
    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the default value returned by this function, unless
     * it's overridden.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }
    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }
    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }
    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, amount);
        return true;
    }
    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }
    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }
    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `amount`.
     */
    function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }
    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }
    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }
        return true;
    }
    /**
     * @dev Moves `amount` of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     */
    function _transfer(address from, address to, uint256 amount) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        _beforeTokenTransfer(from, to, amount);
        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
            // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
            // decrementing then incrementing.
            _balances[to] += amount;
        }
        emit Transfer(from, to, amount);
        _afterTokenTransfer(from, to, amount);
    }
    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");
        _beforeTokenTransfer(address(0), account, amount);
        _totalSupply += amount;
        unchecked {
            // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
            _balances[account] += amount;
        }
        emit Transfer(address(0), account, amount);
        _afterTokenTransfer(address(0), account, amount);
    }
    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");
        _beforeTokenTransfer(account, address(0), amount);
        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
            // Overflow not possible: amount <= accountBalance <= totalSupply.
            _totalSupply -= amount;
        }
        emit Transfer(account, address(0), amount);
        _afterTokenTransfer(account, address(0), amount);
    }
    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(address owner, address spender, uint256 amount) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");
        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }
    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `amount`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }
    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {}
    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {}
    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[45] private __gap;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/ERC4626.sol)
pragma solidity ^0.8.0;
import "../ERC20Upgradeable.sol";
import "../utils/SafeERC20Upgradeable.sol";
import "../../../interfaces/IERC4626Upgradeable.sol";
import "../../../utils/math/MathUpgradeable.sol";
import {Initializable} from "../../../proxy/utils/Initializable.sol";
/**
 * @dev Implementation of the ERC4626 "Tokenized Vault Standard" as defined in
 * https://eips.ethereum.org/EIPS/eip-4626[EIP-4626].
 *
 * This extension allows the minting and burning of "shares" (represented using the ERC20 inheritance) in exchange for
 * underlying "assets" through standardized {deposit}, {mint}, {redeem} and {burn} workflows. This contract extends
 * the ERC20 standard. Any additional extensions included along it would affect the "shares" token represented by this
 * contract and not the "assets" token which is an independent contract.
 *
 * [CAUTION]
 * ====
 * In empty (or nearly empty) ERC-4626 vaults, deposits are at high risk of being stolen through frontrunning
 * with a "donation" to the vault that inflates the price of a share. This is variously known as a donation or inflation
 * attack and is essentially a problem of slippage. Vault deployers can protect against this attack by making an initial
 * deposit of a non-trivial amount of the asset, such that price manipulation becomes infeasible. Withdrawals may
 * similarly be affected by slippage. Users can protect against this attack as well as unexpected slippage in general by
 * verifying the amount received is as expected, using a wrapper that performs these checks such as
 * https://github.com/fei-protocol/ERC4626#erc4626router-and-base[ERC4626Router].
 *
 * Since v4.9, this implementation uses virtual assets and shares to mitigate that risk. The `_decimalsOffset()`
 * corresponds to an offset in the decimal representation between the underlying asset's decimals and the vault
 * decimals. This offset also determines the rate of virtual shares to virtual assets in the vault, which itself
 * determines the initial exchange rate. While not fully preventing the attack, analysis shows that the default offset
 * (0) makes it non-profitable, as a result of the value being captured by the virtual shares (out of the attacker's
 * donation) matching the attacker's expected gains. With a larger offset, the attack becomes orders of magnitude more
 * expensive than it is profitable. More details about the underlying math can be found
 * xref:erc4626.adoc#inflation-attack[here].
 *
 * The drawback of this approach is that the virtual shares do capture (a very small) part of the value being accrued
 * to the vault. Also, if the vault experiences losses, the users try to exit the vault, the virtual shares and assets
 * will cause the first user to exit to experience reduced losses in detriment to the last users that will experience
 * bigger losses. Developers willing to revert back to the pre-v4.9 behavior just need to override the
 * `_convertToShares` and `_convertToAssets` functions.
 *
 * To learn more, check out our xref:ROOT:erc4626.adoc[ERC-4626 guide].
 * ====
 *
 * _Available since v4.7._
 */
abstract contract ERC4626Upgradeable is Initializable, ERC20Upgradeable, IERC4626Upgradeable {
    using MathUpgradeable for uint256;
    IERC20Upgradeable private _asset;
    uint8 private _underlyingDecimals;
    /**
     * @dev Set the underlying asset contract. This must be an ERC20-compatible contract (ERC20 or ERC777).
     */
    function __ERC4626_init(IERC20Upgradeable asset_) internal onlyInitializing {
        __ERC4626_init_unchained(asset_);
    }
    function __ERC4626_init_unchained(IERC20Upgradeable asset_) internal onlyInitializing {
        (bool success, uint8 assetDecimals) = _tryGetAssetDecimals(asset_);
        _underlyingDecimals = success ? assetDecimals : 18;
        _asset = asset_;
    }
    /**
     * @dev Attempts to fetch the asset decimals. A return value of false indicates that the attempt failed in some way.
     */
    function _tryGetAssetDecimals(IERC20Upgradeable asset_) private view returns (bool, uint8) {
        (bool success, bytes memory encodedDecimals) = address(asset_).staticcall(
            abi.encodeWithSelector(IERC20MetadataUpgradeable.decimals.selector)
        );
        if (success && encodedDecimals.length >= 32) {
            uint256 returnedDecimals = abi.decode(encodedDecimals, (uint256));
            if (returnedDecimals <= type(uint8).max) {
                return (true, uint8(returnedDecimals));
            }
        }
        return (false, 0);
    }
    /**
     * @dev Decimals are computed by adding the decimal offset on top of the underlying asset's decimals. This
     * "original" value is cached during construction of the vault contract. If this read operation fails (e.g., the
     * asset has not been created yet), a default of 18 is used to represent the underlying asset's decimals.
     *
     * See {IERC20Metadata-decimals}.
     */
    function decimals() public view virtual override(IERC20MetadataUpgradeable, ERC20Upgradeable) returns (uint8) {
        return _underlyingDecimals + _decimalsOffset();
    }
    /** @dev See {IERC4626-asset}. */
    function asset() public view virtual override returns (address) {
        return address(_asset);
    }
    /** @dev See {IERC4626-totalAssets}. */
    function totalAssets() public view virtual override returns (uint256) {
        return _asset.balanceOf(address(this));
    }
    /** @dev See {IERC4626-convertToShares}. */
    function convertToShares(uint256 assets) public view virtual override returns (uint256) {
        return _convertToShares(assets, MathUpgradeable.Rounding.Down);
    }
    /** @dev See {IERC4626-convertToAssets}. */
    function convertToAssets(uint256 shares) public view virtual override returns (uint256) {
        return _convertToAssets(shares, MathUpgradeable.Rounding.Down);
    }
    /** @dev See {IERC4626-maxDeposit}. */
    function maxDeposit(address) public view virtual override returns (uint256) {
        return type(uint256).max;
    }
    /** @dev See {IERC4626-maxMint}. */
    function maxMint(address) public view virtual override returns (uint256) {
        return type(uint256).max;
    }
    /** @dev See {IERC4626-maxWithdraw}. */
    function maxWithdraw(address owner) public view virtual override returns (uint256) {
        return _convertToAssets(balanceOf(owner), MathUpgradeable.Rounding.Down);
    }
    /** @dev See {IERC4626-maxRedeem}. */
    function maxRedeem(address owner) public view virtual override returns (uint256) {
        return balanceOf(owner);
    }
    /** @dev See {IERC4626-previewDeposit}. */
    function previewDeposit(uint256 assets) public view virtual override returns (uint256) {
        return _convertToShares(assets, MathUpgradeable.Rounding.Down);
    }
    /** @dev See {IERC4626-previewMint}. */
    function previewMint(uint256 shares) public view virtual override returns (uint256) {
        return _convertToAssets(shares, MathUpgradeable.Rounding.Up);
    }
    /** @dev See {IERC4626-previewWithdraw}. */
    function previewWithdraw(uint256 assets) public view virtual override returns (uint256) {
        return _convertToShares(assets, MathUpgradeable.Rounding.Up);
    }
    /** @dev See {IERC4626-previewRedeem}. */
    function previewRedeem(uint256 shares) public view virtual override returns (uint256) {
        return _convertToAssets(shares, MathUpgradeable.Rounding.Down);
    }
    /** @dev See {IERC4626-deposit}. */
    function deposit(uint256 assets, address receiver) public virtual override returns (uint256) {
        require(assets <= maxDeposit(receiver), "ERC4626: deposit more than max");
        uint256 shares = previewDeposit(assets);
        _deposit(_msgSender(), receiver, assets, shares);
        return shares;
    }
    /** @dev See {IERC4626-mint}.
     *
     * As opposed to {deposit}, minting is allowed even if the vault is in a state where the price of a share is zero.
     * In this case, the shares will be minted without requiring any assets to be deposited.
     */
    function mint(uint256 shares, address receiver) public virtual override returns (uint256) {
        require(shares <= maxMint(receiver), "ERC4626: mint more than max");
        uint256 assets = previewMint(shares);
        _deposit(_msgSender(), receiver, assets, shares);
        return assets;
    }
    /** @dev See {IERC4626-withdraw}. */
    function withdraw(uint256 assets, address receiver, address owner) public virtual override returns (uint256) {
        require(assets <= maxWithdraw(owner), "ERC4626: withdraw more than max");
        uint256 shares = previewWithdraw(assets);
        _withdraw(_msgSender(), receiver, owner, assets, shares);
        return shares;
    }
    /** @dev See {IERC4626-redeem}. */
    function redeem(uint256 shares, address receiver, address owner) public virtual override returns (uint256) {
        require(shares <= maxRedeem(owner), "ERC4626: redeem more than max");
        uint256 assets = previewRedeem(shares);
        _withdraw(_msgSender(), receiver, owner, assets, shares);
        return assets;
    }
    /**
     * @dev Internal conversion function (from assets to shares) with support for rounding direction.
     */
    function _convertToShares(uint256 assets, MathUpgradeable.Rounding rounding) internal view virtual returns (uint256) {
        return assets.mulDiv(totalSupply() + 10 ** _decimalsOffset(), totalAssets() + 1, rounding);
    }
    /**
     * @dev Internal conversion function (from shares to assets) with support for rounding direction.
     */
    function _convertToAssets(uint256 shares, MathUpgradeable.Rounding rounding) internal view virtual returns (uint256) {
        return shares.mulDiv(totalAssets() + 1, totalSupply() + 10 ** _decimalsOffset(), rounding);
    }
    /**
     * @dev Deposit/mint common workflow.
     */
    function _deposit(address caller, address receiver, uint256 assets, uint256 shares) internal virtual {
        // If _asset is ERC777, `transferFrom` can trigger a reentrancy BEFORE the transfer happens through the
        // `tokensToSend` hook. On the other hand, the `tokenReceived` hook, that is triggered after the transfer,
        // calls the vault, which is assumed not malicious.
        //
        // Conclusion: we need to do the transfer before we mint so that any reentrancy would happen before the
        // assets are transferred and before the shares are minted, which is a valid state.
        // slither-disable-next-line reentrancy-no-eth
        SafeERC20Upgradeable.safeTransferFrom(_asset, caller, address(this), assets);
        _mint(receiver, shares);
        emit Deposit(caller, receiver, assets, shares);
    }
    /**
     * @dev Withdraw/redeem common workflow.
     */
    function _withdraw(
        address caller,
        address receiver,
        address owner,
        uint256 assets,
        uint256 shares
    ) internal virtual {
        if (caller != owner) {
            _spendAllowance(owner, caller, shares);
        }
        // If _asset is ERC777, `transfer` can trigger a reentrancy AFTER the transfer happens through the
        // `tokensReceived` hook. On the other hand, the `tokensToSend` hook, that is triggered before the transfer,
        // calls the vault, which is assumed not malicious.
        //
        // Conclusion: we need to do the transfer after the burn so that any reentrancy would happen after the
        // shares are burned and after the assets are transferred, which is a valid state.
        _burn(owner, shares);
        SafeERC20Upgradeable.safeTransfer(_asset, receiver, assets);
        emit Withdraw(caller, receiver, owner, assets, shares);
    }
    function _decimalsOffset() internal view virtual returns (uint8) {
        return 0;
    }
    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
pragma solidity ^0.8.0;
import "../IERC20Upgradeable.sol";
/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20MetadataUpgradeable is IERC20Upgradeable {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);
    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);
    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}
// 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 IERC20PermitUpgradeable {
    /**
     * @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) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20Upgradeable {
    /**
     * @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 "../IERC20Upgradeable.sol";
import "../extensions/IERC20PermitUpgradeable.sol";
import "../../../utils/AddressUpgradeable.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 SafeERC20Upgradeable {
    using AddressUpgradeable 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(IERC20Upgradeable 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(IERC20Upgradeable 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(IERC20Upgradeable 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(IERC20Upgradeable 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(IERC20Upgradeable 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(IERC20Upgradeable 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(
        IERC20PermitUpgradeable 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(IERC20Upgradeable 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(IERC20Upgradeable 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))) && AddressUpgradeable.isContract(address(token));
    }
}
// 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 AddressUpgradeable {
    /**
     * @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 v4.9.4) (utils/Context.sol)
pragma solidity ^0.8.0;
import {Initializable} from "../proxy/utils/Initializable.sol";
/**
 * @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 ContextUpgradeable is Initializable {
    function __Context_init() internal onlyInitializing {
    }
    function __Context_init_unchained() internal onlyInitializing {
    }
    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;
    }
    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol)
pragma solidity ^0.8.0;
/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library MathUpgradeable {
    enum Rounding {
        Down, // Toward negative infinity
        Up, // Toward infinity
        Zero // Toward zero
    }
    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }
    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }
    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }
    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds up instead
     * of rounding down.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }
    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
     * with further edits by Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod0 := mul(x, y)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }
            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return prod0 / denominator;
            }
            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1, "Math: mulDiv overflow");
            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////
            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)
                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }
            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
            // See https://cs.stackexchange.com/q/138556/92363.
            // Does not overflow because the denominator cannot be zero at this stage in the function.
            uint256 twos = denominator & (~denominator + 1);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)
                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)
                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }
            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;
            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;
            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
            // in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256
            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }
    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }
    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }
        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);
        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }
    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
        }
    }
    /**
     * @dev Return the log in base 2, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }
    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
        }
    }
    /**
     * @dev Return the log in base 10, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }
    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);
        }
    }
    /**
     * @dev Return the log in base 256, rounded down, of a positive value.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }
    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);
        }
    }
}
// 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
pragma solidity ^0.8.13;
interface IProxy {
    function setAdmin(address newAdmin_) external;
    function setDummyImplementation(address newDummyImplementation_) external;
    function addImplementation(address implementation_, bytes4[] calldata sigs_)
        external;
    function removeImplementation(address implementation_) external;
    function getAdmin() external view returns (address);
    function getDummyImplementation() external view returns (address);
    function getImplementationSigs(address impl_)
        external
        view
        returns (bytes4[] memory);
    function getSigsImplementation(bytes4 sig_) external view returns (address);
}
//SPDX-License-Identifier: Unlicense
pragma solidity 0.8.17;
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
interface TokenInterface {
    function approve(address, uint256) external;
    function transfer(address, uint) external;
    function transferFrom(address, address, uint) external;
    function deposit() external payable;
    function withdraw(uint) external;
    function balanceOf(address) external view returns (uint);
    function decimals() external view returns (uint);
    function totalSupply() external view returns (uint);
    function allowance(
        address owner,
        address spender
    ) external view returns (uint256);
}
interface IInstaIndex {
    function build(
        address owner_,
        uint256 accountVersion_,
        address origin_
    ) external returns (address account_);
}
interface IDSA {
    function cast(
        string[] calldata _targetNames,
        bytes[] calldata _datas,
        address _origin
    ) external payable returns (bytes32);
}
interface IWstETH {
    function tokensPerStEth() external view returns (uint256);
    function getStETHByWstETH(
        uint256 _wstETHAmount
    ) external view returns (uint256);
    function getWstETHByStETH(
        uint256 _stETHAmount
    ) external view returns (uint256);
    function stEthPerToken() external view returns (uint256);
}
interface ICompoundMarket {
    struct UserCollateral {
        uint128 balance;
        uint128 _reserved;
    }
    function borrowBalanceOf(address account) external view returns (uint256);
    function userCollateral(
        address,
        address
    ) external view returns (UserCollateral memory);
}
interface IEulerTokens {
    function balanceOfUnderlying(
        address account
    ) external view returns (uint256); //To be used for E-Tokens
    function balanceOf(address) external view returns (uint256); //To be used for D-Tokens
}
interface ILiteVaultV1 {
    function deleverageAndWithdraw(
        uint256 deleverageAmt_,
        uint256 withdrawAmount_,
        address to_
    ) external;
    function getCurrentExchangePrice()
        external
        view
        returns (uint256 exchangePrice_, uint256 newRevenue_);
}
interface IAavePoolProviderInterface {
    function getLendingPool() external view returns (address);
}
interface IAavePool {
    function withdraw(
        address asset,
        uint256 amount,
        address to
    ) external returns (uint256); // Returns underlying amount withdrawn.
}
interface IMorphoAaveV2 {
    struct PoolIndexes {
        uint32 lastUpdateTimestamp; // The last time the local pool and peer-to-peer indexes were updated.
        uint112 poolSupplyIndex; // Last pool supply index. Note that for the stEth market, the pool supply index is tweaked to take into account the staking rewards.
        uint112 poolBorrowIndex; // Last pool borrow index. Note that for the stEth market, the pool borrow index is tweaked to take into account the staking rewards.
    }
    function poolIndexes(address) external view returns (PoolIndexes memory);
    // Current index from supply peer-to-peer unit to underlying (in ray).
    function p2pSupplyIndex(address) external view returns (uint256);
    // Current index from borrow peer-to-peer unit to underlying (in ray).
    function p2pBorrowIndex(address) external view returns (uint256);
    struct SupplyBalance {
        uint256 inP2P; // In peer-to-peer supply scaled unit, a unit that grows in underlying value, to keep track of the interests earned by suppliers in peer-to-peer. Multiply by the peer-to-peer supply index to get the underlying amount.
        uint256 onPool; // In pool supply scaled unit. Multiply by the pool supply index to get the underlying amount.
    }
    struct BorrowBalance {
        uint256 inP2P; // In peer-to-peer borrow scaled unit, a unit that grows in underlying value, to keep track of the interests paid by borrowers in peer-to-peer. Multiply by the peer-to-peer borrow index to get the underlying amount.
        uint256 onPool; // In pool borrow scaled unit, a unit that grows in value, to keep track of the debt increase when borrowers are on Aave. Multiply by the pool borrow index to get the underlying amount.
    }
    // For a given market, the supply balance of a user. aToken -> user -> balances.
    function supplyBalanceInOf(
        address,
        address
    ) external view returns (SupplyBalance memory);
    // For a given market, the borrow balance of a user. aToken -> user -> balances.
    function borrowBalanceInOf(
        address,
        address
    ) external view returns (BorrowBalance memory);
    /// @notice Updates the peer-to-peer indexes and pool indexes (only stored locally).
    function updateIndexes(address _poolToken) external;
}
interface ILidoWithdrawalQueue {
    // code below from Lido WithdrawalQueueBase.sol
    // see https://github.com/lidofinance/lido-dao/blob/v2.0.0-beta.3/contracts/0.8.9/WithdrawalQueueBase.sol
    /// @notice output format struct for `_getWithdrawalStatus()` method
    struct WithdrawalRequestStatus {
        /// @notice stETH token amount that was locked on withdrawal queue for this request
        uint256 amountOfStETH;
        /// @notice amount of stETH shares locked on withdrawal queue for this request
        uint256 amountOfShares;
        /// @notice address that can claim or transfer this request
        address owner;
        /// @notice timestamp of when the request was created, in seconds
        uint256 timestamp;
        /// @notice true, if request is finalized
        bool isFinalized;
        /// @notice true, if request is claimed. Request is claimable if (isFinalized && !isClaimed)
        bool isClaimed;
    }
    /// @notice length of the checkpoints. Last possible value for the claim hint
    function getLastCheckpointIndex() external view returns (uint256);
    // code below from Lido WithdrawalQueue.sol
    // see https://github.com/lidofinance/lido-dao/blob/v2.0.0-beta.3/contracts/0.8.9/WithdrawalQueue.sol
    /// @notice Request the sequence of stETH withdrawals according to passed `withdrawalRequestInputs` data
    /// @param amounts an array of stETH amount values. The standalone withdrawal request will
    ///  be created for each item in the passed list.
    /// @param _owner address that will be able to transfer or claim the request.
    ///  If `owner` is set to `address(0)`, `msg.sender` will be used as owner.
    /// @return requestIds an array of the created withdrawal requests
    function requestWithdrawals(
        uint256[] calldata amounts,
        address _owner
    ) external returns (uint256[] memory requestIds);
    /// @notice Claim one`_requestId` request once finalized sending locked ether to the owner
    /// @param _requestId request id to claim
    /// @dev use unbounded loop to find a hint, which can lead to OOG
    /// @dev
    ///  Reverts if requestId or hint are not valid
    ///  Reverts if request is not finalized or already claimed
    ///  Reverts if msg sender is not an owner of request
    function claimWithdrawal(uint256 _requestId) external;
    /// @notice Claim a batch of withdrawal requests once finalized (claimable) sending locked ether to the owner
    /// @param _requestIds array of request ids to claim
    /// @param _hints checkpoint hint for each id.
    ///   Can be retrieved with `findCheckpointHints()`
    /// @dev
    ///  Reverts if any requestId or hint in arguments are not valid
    ///  Reverts if any request is not finalized or already claimed
    ///  Reverts if msg sender is not an owner of the requests
    function claimWithdrawals(
        uint256[] calldata _requestIds,
        uint256[] calldata _hints
    ) external;
    /// @notice Returns all withdrawal requests that belongs to the `_owner` address
    ///
    /// WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
    /// to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
    /// this function has an unbounded cost, and using it as part of a state-changing function may render the function
    /// uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
    function getWithdrawalRequests(
        address _owner
    ) external view returns (uint256[] memory requestsIds);
    /// @notice Finds the list of hints for the given `_requestIds` searching among the checkpoints with indices
    ///  in the range  `[_firstIndex, _lastIndex]`. NB! Array of request ids should be sorted
    /// @param _requestIds ids of the requests sorted in the ascending order to get hints for
    /// @param _firstIndex left boundary of the search range
    /// @param _lastIndex right boundary of the search range
    /// @return hintIds the hints for `claimWithdrawal` to find the checkpoint for the passed request ids
    function findCheckpointHints(
        uint256[] calldata _requestIds,
        uint256 _firstIndex,
        uint256 _lastIndex
    ) external view returns (uint256[] memory hintIds);
    /// @notice Returns statuses for the array of request ids
    /// @param _requestIds array of withdrawal request ids
    function getWithdrawalStatus(
        uint256[] calldata _requestIds
    ) external view returns (WithdrawalRequestStatus[] memory statuses);
    function balanceOf(address) external view returns (uint);
    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);
}
interface IWeth {
    function deposit() external payable;
    function transfer(address dst, uint wad) external returns (bool);
}
interface IMorphoAaveV3 {
    function marketsCreated() external view returns (address[] memory);
    /// @notice Contains the market side indexes as uint256 instead of uint128.
    struct MarketSideIndexes256 {
        uint256 poolIndex; // The pool index (in ray).
        uint256 p2pIndex; // The peer-to-peer index (in ray).
    }
    /// @notice Contains the indexes as uint256 instead of uint128.
    struct Indexes256 {
        MarketSideIndexes256 supply; // The `MarketSideIndexes` related to the supply as uint256.
        MarketSideIndexes256 borrow; // The `MarketSideIndexes` related to the borrow as uint256.
    }
    /// @notice Returns the updated indexes (peer-to-peer and pool).
    function updatedIndexes(
        address underlying
    ) external view returns (Indexes256 memory);
    /// @notice Returns the total borrow balance of `user` on the `underlying` market (in underlying).
    function borrowBalance(
        address underlying,
        address user
    ) external view returns (uint256);
    /// @notice Returns the supply collateral balance of `user` on the `underlying` market (in underlying).
    function collateralBalance(
        address underlying,
        address user
    ) external view returns (uint256);
    /// @notice Returns the scaled balance of `user` on the `underlying` market, supplied on pool & used as collateral (with `underlying` decimals).
    function scaledCollateralBalance(
        address underlying,
        address user
    ) external view returns (uint256);
    /// @notice Returns the scaled balance of `user` on the `underlying` market, borrowed peer-to-peer (with `underlying` decimals).
    function scaledP2PBorrowBalance(
        address underlying,
        address user
    ) external view returns (uint256);
    /// @notice Returns the scaled balance of `user` on the `underlying` market, borrowed from pool (with `underlying` decimals).
    function scaledPoolBorrowBalance(
        address underlying,
        address user
    ) external view returns (uint256);
}
interface IFluidVaultT1 {
    /// @notice reads uint256 data `result_` from storage at a bytes32 storage `slot_` key.
    function readFromStorage(
        bytes32 slot_
    ) external view returns (uint256 result_);
    /// @notice calculates the updated vault exchange prices
    function updateExchangePrices(
        uint256 vaultVariables2_
    )
        external
        view
        returns (
            uint256 liqSupplyExPrice_,
            uint256 liqBorrowExPrice_,
            uint256 vaultSupplyExPrice_,
            uint256 vaultBorrowExPrice_
        );
    function operate(
        uint256 nftId_, // if 0 then new position
        int256 newCol_, // if negative then withdraw
        int256 newDebt_, // if negative then payback
        address to_ // address at which the borrow & withdraw amount should go to. If address(0) then it'll go to msg.sender
    )
        external
        payable
        returns (
            uint256, // nftId_
            int256, // final supply amount. if - then withdraw
            int256 // final borrow amount. if - then payback
        );
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.17;
import "./interfaces.sol";
import "../../infiniteProxy/IProxy.sol";
/// @title      Variables
/// @notice     Contains common storage variables of all modules of Infinite proxy.
contract ConstantVariables {
    uint256 internal constant RAY = 10 ** 27;
    uint256 internal constant MAX_UINT256 = type(uint256).max;
    uint256 internal constant RAY_MINUS_ONE = RAY - 1;
    uint256 internal constant MAX_UINT256_MINUS_RAY_MINUS_ONE =
        MAX_UINT256 - RAY_MINUS_ONE;
    uint256 internal constant MORPHO_V3_MAX_ITERATIONS = 10;
    IInstaIndex internal constant INSTA_INDEX_CONTRACT =
        IInstaIndex(0x2971AdFa57b20E5a416aE5a708A8655A9c74f723);
    address internal constant IETH_TOKEN_V1 =
        0xc383a3833A87009fD9597F8184979AF5eDFad019;
    /***********************************|
    |           STETH ADDRESSES         |
    |__________________________________*/
    address internal constant STETH_ADDRESS =
        0xae7ab96520DE3A18E5e111B5EaAb095312D7fE84;
    // IERC20 internal constant STETH_CONTRACT = IERC20(STETH_ADDRESS);
    address internal constant A_STETH_ADDRESS =
        0x1982b2F5814301d4e9a8b0201555376e62F82428;
    /***********************************|
    |           WSTETH ADDRESSES        |
    |__________________________________*/
    address internal constant WSTETH_ADDRESS =
        0x7f39C581F595B53c5cb19bD0b3f8dA6c935E2Ca0;
    IWstETH internal constant WSTETH_CONTRACT = IWstETH(WSTETH_ADDRESS);
    address internal constant A_WSTETH_ADDRESS_AAVEV3 =
        0x0B925eD163218f6662a35e0f0371Ac234f9E9371;
    address internal constant E_WSTETH_ADDRESS =
        0xbd1bd5C956684f7EB79DA40f582cbE1373A1D593;
    address internal constant SP_WSTETH_ADDRESS_SPARK =
        0x12B54025C112Aa61fAce2CDB7118740875A566E9;
    address internal constant A_WSTETH_ADDRESS_AAVEV3_LIDO =
        0xC035a7cf15375cE2706766804551791aD035E0C2;
    /***********************************|
    |           ETH ADDRESSES           |
    |__________________________________*/
    address internal constant ETH_ADDRESS =
        0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
    address internal constant WETH_ADDRESS =
        0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    address internal constant A_WETH_ADDRESS =
        0x030bA81f1c18d280636F32af80b9AAd02Cf0854e;
    address internal constant D_WETH_ADDRESS =
        0xF63B34710400CAd3e044cFfDcAb00a0f32E33eCf;
    address internal constant D_WETH_ADDRESS_AAVEV3 =
        0xeA51d7853EEFb32b6ee06b1C12E6dcCA88Be0fFE;
    address internal constant D_WETH_ADDRESS_EULER =
        0x62e28f054efc24b26A794F5C1249B6349454352C;
    address internal constant D_WETH_ADDRESS_SPARK =
        0x2e7576042566f8D6990e07A1B61Ad1efd86Ae70d;
    address internal constant D_WETH_ADDRESS_AAVEV3_LIDO =
        0x91b7d78BF92db564221f6B5AeE744D1727d1Dd1e;
    address internal constant COMP_ETH_MARKET_ADDRESS =
        0xA17581A9E3356d9A858b789D68B4d866e593aE94;
    ILiteVaultV1 internal constant LITE_VAULT_V1 = ILiteVaultV1(IETH_TOKEN_V1);
    ICompoundMarket internal constant COMP_ETH_MARKET_CONTRACT =
        ICompoundMarket(COMP_ETH_MARKET_ADDRESS);
    IMorphoAaveV2 internal constant MORPHO_CONTRACT =
        IMorphoAaveV2(0x777777c9898D384F785Ee44Acfe945efDFf5f3E0);
    IAavePoolProviderInterface internal constant AAVE_POOL_PROVIDER =
        IAavePoolProviderInterface(0xB53C1a33016B2DC2fF3653530bfF1848a515c8c5);
    ILidoWithdrawalQueue internal constant LIDO_WITHDRAWAL_QUEUE =
        ILidoWithdrawalQueue(0x889edC2eDab5f40e902b864aD4d7AdE8E412F9B1);
    IMorphoAaveV3 internal constant MORPHO_AAVE_V3 =
        IMorphoAaveV3(0x33333aea097c193e66081E930c33020272b33333);
    IFluidVaultT1 internal constant FLUID_VAULT =
        IFluidVaultT1(FLUID_VAULT_ADDRESS);
    IFluidVaultT1 internal constant FLUID_VAULT_NEW =
        IFluidVaultT1(FLUID_VAULT_ADDRESS_NEW);
    address internal constant FLUID_VAULT_ADDRESS =
        0xA0F83Fc5885cEBc0420ce7C7b139Adc80c4F4D91;
    address internal constant FLUID_VAULT_ADDRESS_NEW =
        0x82B27fA821419F5689381b565a8B0786aA2548De;
    uint256 internal constant FLUID_NFT_ID = 3;
    uint256 internal constant FLUID_NFT_ID_NEW = 1566;
    uint256 internal constant X8 = 0xff;
    uint256 internal constant X19 = 0x7ffff;
    uint256 internal constant X64 = 0xffffffffffffffff;
}
contract Variables is ConstantVariables {
    /****************************************************************************|
    |   @notice Ids associated with protocols at the time of deployment.         |
    |   New protocols might have been added or removed at the time of viewing.   |
    |                          AAVE_V2 => 1                                      |
    |                          AAVE_V3 => 2                                      |
    |                          COMPOUND_V3 => 3                                  |
    |                          EULER => 4 // Disabled                            |
    |                          MORPHO_AAVE_V2 => 5                               |
    |                          MORPHO_AAVE_V3 => 6                               |
    |                          SPARK => 7                                        |
    |                          FLUID => 8                                        |
    |                          FLUID_NEW => 9                                    |
    |                          AAVE V3 LIDO => 10                                |
    |___________________________________________________________________________*/
    /***********************************|
    |           STATE VARIABLES         |
    |__________________________________*/
    // 1: open; 2: closed
    uint8 internal _status;
    IDSA public vaultDSA;
    /// @notice Max limit (in wei) allowed for wsteth per eth unit amount.
    uint256 public leverageMaxUnitAmountLimit;
    /// @notice Secondary auth that only has the power to reduce max risk ratio.
    address public secondaryAuth;
    // Current exchange price.
    uint256 public exchangePrice;
    // Revenue exchange price (helps in calculating revenue).
    // Exchange price when revenue got updated last. It'll only increase overtime.
    uint256 public revenueExchangePrice;
    /// @notice mapping to store allowed rebalancers
    ///         modifiable by auth
    mapping(address => bool) public isRebalancer;
    // Mapping of protocol id => max risk ratio, scaled to factor 4.
    // i.e. 1% would equal 10,000; 10% would be 100,000 etc.
    // 1 = Aave v2
    // 2 = Aave v3
    // 3 = Compound v3 (ETH market)
    // 4 = Euler // Disabled
    // 5 = Morpho Aave v2
    // 6 = Morpho Aave v3
    // 7 = Spark
    // 8 = Fluid
    // 9 = Fluid New
    // 10 = Aave V3 Lido
    mapping(uint8 => uint256) public maxRiskRatio;
    // Max aggregated risk ratio of the vault that can be reached, scaled to factor 4.
    // i.e. 1% would equal 10,000; 10% would be 100,000 etc.
    uint256 public aggrMaxVaultRatio;
    /// @notice withdraw fee is either amount in percentage or absolute minimum. This var defines the percentage in 1e6
    /// this number is given in 1e4, i.e. 1% would equal 10,000; 10% would be 100,000 etc.
    /// modifiable by owner
    uint256 public withdrawalFeePercentage;
    /// @notice withdraw fee is either amount in percentage or absolute minimum. This var defines the absolute minimum
    /// this number is given in decimals for the respective asset of the vault.
    /// modifiable by owner
    uint256 public withdrawFeeAbsoluteMin; // in underlying base asset, i.e. stEth
    // charge from the profits, scaled to factor 4.
    // 100,000 would be 10% cut from profit
    uint256 public revenueFeePercentage;
    /// @notice Stores profit revenue and withdrawal fees collected.
    uint256 public revenue;
    /// @notice Revenue will be transffered to this address upon collection.
    address public treasury;
    /// @notice Tracker for amount of stETH queued for withdrawal.
    uint256 public queuedWithdrawStEth;
}
/// @title      PrimaryHelpers
/// @notice     Contains common modifiers of all modules of Infinite proxy.
contract PrimaryHelpers is Variables {
    /***********************************|
    |              ERRORS               |
    |__________________________________*/
    error Helpers__UnsupportedProtocolId();
    error Helpers__NotRebalancer();
    error Helpers__Reentrant();
    error Helpers__EulerDisabled();
    /***********************************|
    |              MODIFIERS            |
    |__________________________________*/
    modifier onlyRebalancer() {
        if (
            !(isRebalancer[msg.sender] ||
                IProxy(address(this)).getAdmin() == msg.sender)
        ) {
            revert Helpers__NotRebalancer();
        }
        _;
    }
    /**
     * @dev reentrancy gaurd.
     */
    modifier nonReentrant() {
        if (_status == 2) revert Helpers__Reentrant();
        _status = 2;
        _;
        _status = 1;
    }
    /// @notice Implements a method to read uint256 data from storage at a bytes32 storage slot key.
    function readFromStorage(bytes32 slot_) public view returns (uint256 result_) {
        assembly {
            result_ := sload(slot_) // read value from the storage slot
        }
    }
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.17;
/// @title      VariablesPrimaryHelper
/// @notice     Primary Helper for variables that imports all the standard 
///             functionalities and contracts.
import {ERC4626Upgradeable} from "@openzeppelin/contracts-upgradeable/token/ERC20/extensions/ERC4626Upgradeable.sol";
import "./interfaces.sol";
import {SafeERC20Upgradeable} from "@openzeppelin/contracts-upgradeable/token/ERC20/utils/SafeERC20Upgradeable.sol";
import {IERC20Upgradeable} from "@openzeppelin/contracts-upgradeable/interfaces/IERC20Upgradeable.sol";
import {PrimaryHelpers} from "./variables.sol";
// ERC4626 & Variables
contract VariablesPrimaryHelper is ERC4626Upgradeable, PrimaryHelpers {
    /*
     * Includes variables from ERC4626Upgradeable, Variables, And PrimaryHelpers
    */
    /// @notice variables.sol is imported in all the files. 
    /// Adding _disableInitializers() so the implementation can't be manipulated
    constructor() {
        _disableInitializers();
    }
}//SPDX-License-Identifier: Unlicense
pragma solidity 0.8.17;
interface IVault {
    struct ProtocolAssetsInStETH {
        uint256 stETH; // supply
        uint256 wETH; // borrow
    }
    struct ProtocolAssetsInWstETH {
        uint256 wstETH; // supply
        uint256 wETH; // borrow
    }
    struct IdealBalances {
        uint256 stETH;
        uint256 wstETH;
        uint256 wETH;
    }
    struct NetAssetsHelper {
        ProtocolAssetsInStETH aaveV2;
        ProtocolAssetsInWstETH aaveV3;
        ProtocolAssetsInWstETH compoundV3;
        ProtocolAssetsInWstETH euler;
        ProtocolAssetsInStETH morphoAaveV2;
        ProtocolAssetsInWstETH morphoAaveV3;
        ProtocolAssetsInWstETH spark;
        ProtocolAssetsInWstETH fluid;
        ProtocolAssetsInWstETH fluidNew;
        ProtocolAssetsInWstETH aaveV3Lido;
        IdealBalances vaultBalances;
        IdealBalances dsaBalances;
    }
    function getProtocolRatio(uint8 protocolId_) external view returns (uint256 ratio_);
    function getNetAssets()
        external
        view
        returns (
            uint256 totalAssets_, // Total assets(collaterals + ideal balances) inlcuding reveune
            uint256 totalDebt_, // Total debt
            uint256 netAssets_, // Total assets - Total debt - Reveune
            uint256 aggregatedRatio_, // Aggregated ratio of vault (Total debt/ (Total assets - revenue))
            NetAssetsHelper memory assets_
        );
    function getWithdrawFee(uint256 stETHAmount_) external view returns (uint256);
    function getRatioAaveV3(uint256 stEthPerWsteth_)
        external
        view
        returns (
            uint256 wstEthAmount_,
            uint256 stEthAmount_,
            uint256 ethAmount_,
            uint256 ratio_
        );
    function readFromStorage(bytes32 slot_) external view returns (uint256 result_);
}
interface TokenInterface {
    function approve(address, uint256) external;
    function transfer(address, uint) external;
    function transferFrom(address, address, uint) external;
    function deposit() external payable;
    function withdraw(uint) external;
    function balanceOf(address) external view returns (uint);
    function decimals() external view returns (uint);
    function totalSupply() external view returns (uint);
    function allowance(
        address owner,
        address spender
    ) external view returns (uint256);
}// SPDX-License-Identifier: MIT
pragma solidity 0.8.17;
contract Events {
    /// Emitted whenever a user withdraws assets and a fee is collected.
    event LogWithdrawFeeCollected(address indexed payer, uint256 indexed fee);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.17;
import "./events.sol";
import "../../common/variablesPrimaryHelper.sol";
import {IVault} from "../common/interface.sol";
contract UserModule is VariablesPrimaryHelper, Events {
    using SafeERC20Upgradeable for IERC20Upgradeable;
    /***********************************|
    |              ERRORS               |
    |__________________________________*/
    error UserModule__ImportAaveV3Unsafe();
    error UserModule__PositionUnsafe();
    error UserModule__NotValidDeleverageAmount();
    error UserModule__LessAstethRecieved();
    error UserModule__NotValidCollectReveuneAmount();
    error UserModule__CollectReveuneAmountIsHigh();
    error UserModule__DeleverageAmountTooHigh();
    /***********************************|
    |              INTERNAL             |
    |__________________________________*/
    /// @dev collects the withdraw fee on assetsAmount and emits LogWithdrawFeeCollected
    /// @param stETHAmount_ the amount of assets being withdrawn
    /// @param owner_ the owner of the assets
    /// @return the withdraw assetsAmount amount after deducting the fee
    function _collectWithdrawFee(
        uint256 stETHAmount_,
        address owner_
    ) internal returns (uint256) {
        uint256 withdrawFee = IVault(address(this)).getWithdrawFee(stETHAmount_);
        revenue += withdrawFee;
        emit LogWithdrawFeeCollected(owner_, withdrawFee);
        return stETHAmount_ - withdrawFee;
    }
    /***********************************|
    |              VIEW                 |
    |__________________________________*/
    function totalAssets() public view virtual override returns (uint256) {
        return (exchangePrice * totalSupply()) / 1e18;
    }
    /***********************************|
    |              CORE                 |
    |__________________________________*/
    /// @dev See {IERC4626-deposit}.
    function deposit(
        uint256 assets_,
        address receiver_
    ) public override nonReentrant returns (uint256 shares_) {
        if (assets_ == type(uint256).max) {
            assets_ = IERC20Upgradeable(STETH_ADDRESS).balanceOf(msg.sender);
        }
        shares_ = super.deposit(assets_, receiver_);
    }
    /// @dev See {IERC4626-mint}.
    /// Note Overriden the function to have the nonReentrant modifier.
    function mint(
        uint256 shares_,
        address receiver_
    ) public override nonReentrant returns (uint256 assets_) {
        assets_ = super.mint(shares_, receiver_);
    }
    /// @dev See {IERC4626-withdraw}.
    function withdraw(
        uint256 assets_,
        address receiver_,
        address owner_
    ) public override nonReentrant returns (uint256 shares_) {
        if (assets_ == type(uint256).max) {
            assets_ = maxWithdraw(owner_);
        } else {
            require(
                assets_ <= maxWithdraw(owner_),
                "ERC4626: withdraw more than max"
            );
        }
        shares_ = previewWithdraw(assets_);
        uint256 assetsRemovingFee_ = _collectWithdrawFee(assets_, owner_);
        _withdraw(msg.sender, receiver_, owner_, assetsRemovingFee_, shares_);
        return shares_;
    }
    /// @dev See {IERC4626-redeem}.
    function redeem(
        uint256 shares_,
        address receiver_,
        address owner_
    ) public override nonReentrant returns (uint256 assetsAfterFee_) {
        if (shares_ == type(uint256).max) {
            shares_ = maxRedeem(owner_);
        } else {
            require(
                shares_ <= maxRedeem(owner_),
                "ERC4626: redeem more than max"
            );
        }
        uint256 assets_ = previewRedeem(shares_);
        // burn full shares but only withdraw assetsAfterFee
        assetsAfterFee_ = _collectWithdrawFee(assets_, owner_);
        _withdraw(msg.sender, receiver_, owner_, assetsAfterFee_, shares_);
    }
    struct ImportBalancesVariables {
        uint256 astETHBal;
        uint256 stETHBal;
        uint256 wstETHBal;
        uint256 wethBal;
        uint256 stETHAaveV3;
        uint256 wethAaveV3;
        uint256 ratioAaveV3;
        uint256 convertedStETH;
        uint256 netAssets;
    }
    struct ImportVariables {
        uint256 iTokenV1Amount;
        uint256 v1ExchangePrice;
        uint256 stEthPerWsteth;
        uint256 netAsteth;
        uint256 userNetDeposit;
        string[] targets;
        bytes[] calldatas;
        string[] flashTargets;
        bytes[] flashCalldatas;
    }
    // /// @notice Only for tests
    // function initialize2(
    //     string memory name_,
    //     string memory symbol_,
    //     address asset_
    // ) external initializer {
    //     if (asset() == address(0)) {
    //         __ERC20_init(name_, symbol_);
    //         __ERC4626_init(IERC20Upgradeable(asset_));
    //     }
    // }
}