// SPDX-License-Identifier: MIT

// File @openzeppelin/contracts/token/ERC20/IERC20.sol@v4.9.6

// Original license: 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);
}


// File @openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol@v4.9.6

// Original license: SPDX_License_Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @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);
}


// File @openzeppelin/contracts/interfaces/IERC20Metadata.sol@v4.9.6

// Original license: SPDX_License_Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC20Metadata.sol)

pragma solidity ^0.8.0;


// File @openzeppelin/contracts/interfaces/IERC4626.sol@v4.9.6

// Original license: SPDX_License_Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (interfaces/IERC4626.sol)

pragma solidity ^0.8.0;


/**
 * @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 IERC4626 is IERC20, IERC20Metadata {
    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);
}


// File @openzeppelin/contracts/token/ERC20/extensions/IERC20Permit.sol@v4.9.6

// Original license: SPDX_License_Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.0;

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

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

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


// File @openzeppelin/contracts/utils/Address.sol@v4.9.6

// Original license: SPDX_License_Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)

pragma solidity ^0.8.1;

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

        return account.code.length > 0;
    }

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

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

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

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

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

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

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

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

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

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

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

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

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


// File @openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol@v4.9.6

// Original license: SPDX_License_Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;



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

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

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

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

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

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

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

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

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

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

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

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

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


// File src/intf/IImpactVault.sol

// Original license: SPDX_License_Identifier: MIT
pragma solidity 0.8.19;

//    █████████   ███████████     █████████   ███████████     ███████████    █████████   ██████   █████ █████   ████     █████████  █████   ███   █████ █████ ███████████ ███████████ ██████████ ███████████   █████         █████████   ██████   █████ ██████████
//   ███░░░░░███ ░░███░░░░░███   ███░░░░░███ ░░███░░░░░███   ░░███░░░░░███  ███░░░░░███ ░░██████ ░░███ ░░███   ███░     ███░░░░░███░░███   ░███  ░░███ ░░███ ░█░░░███░░░█░█░░░░░░███ ░░███░░░░░█░░███░░░░░███ ░░███         ███░░░░░███ ░░██████ ░░███ ░░███░░░░███
//  ░███    ░███  ░███    ░███  ░███    ░███  ░███    ░███    ░███    ░███ ░███    ░███  ░███░███ ░███  ░███  ███      ░███    ░░░  ░███   ░███   ░███  ░███ ░   ░███  ░ ░     ███░   ░███  █ ░  ░███    ░███  ░███        ░███    ░███  ░███░███ ░███  ░███   ░░███
//  ░███████████  ░██████████   ░███████████  ░██████████     ░██████████  ░███████████  ░███░░███░███  ░███████       ░░█████████  ░███   ░███   ░███  ░███     ░███         ███     ░██████    ░██████████   ░███        ░███████████  ░███░░███░███  ░███    ░███
//  ░███░░░░░███  ░███░░░░░███  ░███░░░░░███  ░███░░░░░███    ░███░░░░░███ ░███░░░░░███  ░███ ░░██████  ░███░░███       ░░░░░░░░███ ░░███  █████  ███   ░███     ░███        ███      ░███░░█    ░███░░░░░███  ░███        ░███░░░░░███  ░███ ░░██████  ░███    ░███
//  ░███    ░███  ░███    ░███  ░███    ░███  ░███    ░███    ░███    ░███ ░███    ░███  ░███  ░░█████  ░███ ░░███      ███    ░███  ░░░█████░█████░    ░███     ░███      ████     █ ░███ ░   █ ░███    ░███  ░███      █ ░███    ░███  ░███  ░░█████  ░███    ███
//  █████   █████ █████   █████ █████   █████ ███████████     ███████████  █████   █████ █████  ░░█████ █████ ░░████   ░░█████████     ░░███ ░░███      █████    █████    ███████████ ██████████ █████   █████ ███████████ █████   █████ █████  ░░█████ ██████████
// ░░░░░   ░░░░░ ░░░░░   ░░░░░ ░░░░░   ░░░░░ ░░░░░░░░░░░     ░░░░░░░░░░░  ░░░░░   ░░░░░ ░░░░░    ░░░░░ ░░░░░   ░░░░     ░░░░░░░░░       ░░░   ░░░      ░░░░░    ░░░░░    ░░░░░░░░░░░ ░░░░░░░░░░ ░░░░░   ░░░░░ ░░░░░░░░░░░ ░░░░░   ░░░░░ ░░░░░    ░░░░░ ░░░░░░░░░░
//
//
//    ,ad8888ba,         db         88888888ba,    88b           d88    ,ad8888ba,     ad88888ba
//   d8"'    `"8b       d88b        88      `"8b   888b         d888   d8"'    `"8b   d8"     "8b
//  d8'                d8'`8b       88        `8b  88`8b       d8'88  d8'        `8b  Y8,
//  88                d8'  `8b      88         88  88 `8b     d8' 88  88          88  `Y8aaaaa,
//  88               d8YaaaaY8b     88         88  88  `8b   d8'  88  88          88    `"""""8b,
//  Y8,             d8""""""""8b    88         8P  88   `8b d8'   88  Y8,        ,8P          `8b
//   Y8a.    .a8P  d8'        `8b   88      .a8P   88    `888'    88   Y8a.    .a8P   Y8a     a8P
//    `"Y8888Y"'  d8'          `8b  88888888Y"'    88     `8'     88    `"Y8888Y"'     "Y88888P"
//
// ===============================================================================================
// =====================================  IImpactVault  ==========================================
// ===============================================================================================
// ARAB BANK SWITZZERLAND: https://github.com/ArabBankSwitzerland
// CADMOS: https://github.com/Cadmos-finance

// Primary Author(s)
// N.B.: https://github.com/nboueri
// J.A.T: https://github.com/jat9292
/// @title Interface of the ImpactVault Contract
/// @author N.B.
/// @notice Used to donate gains stemming from a positively rebasing token
interface IImpactVault is IERC20Metadata {

    error DepositTooLow();

    struct TimelockedSurplus {
        uint128 surplus; // TimeLocked surplus - distributable at timelock expiry (1 day)
        uint64 timestamp; // Ok until 2554  - timestamp when surplus was timelocked
        uint64 minimalCollectAmount; // Minimal Amount to auto-Collect at each deposit/ withdrawal - can be set by _owner
    }

    /* ========== MUTATIVE FUNCTIONS ========== */

    /// @notice Collects Asset Surplus as a donation for Owner - Does not collect if surplus is less than minimalTransfer
    function collectDonations(
        uint64 minimalTransfer
    )
        external
        returns (
            uint128 collectedAmount,
            uint256 netWealth,
            uint256 totalSupply
        );

    /* ========== RESTRICTED FUNCTIONS ========== */

    /// @notice Allows Owner to set minimalCollectAmount
    function setAutoCollectThreshold(uint64 newMinimalCollectAmount) external;

    /* ========== EVENTS ========== */

    event SetAutoCollectThreshold(
        uint64 newMinimalCollectAmount,
        uint64 oldMinimalCollectAmount
    );
}


// File src/intf/IImpactVaultDepositor.sol

// Original license: SPDX_License_Identifier: MIT
pragma solidity 0.8.19;

//    █████████   ███████████     █████████   ███████████     ███████████    █████████   ██████   █████ █████   ████     █████████  █████   ███   █████ █████ ███████████ ███████████ ██████████ ███████████   █████         █████████   ██████   █████ ██████████
//   ███░░░░░███ ░░███░░░░░███   ███░░░░░███ ░░███░░░░░███   ░░███░░░░░███  ███░░░░░███ ░░██████ ░░███ ░░███   ███░     ███░░░░░███░░███   ░███  ░░███ ░░███ ░█░░░███░░░█░█░░░░░░███ ░░███░░░░░█░░███░░░░░███ ░░███         ███░░░░░███ ░░██████ ░░███ ░░███░░░░███
//  ░███    ░███  ░███    ░███  ░███    ░███  ░███    ░███    ░███    ░███ ░███    ░███  ░███░███ ░███  ░███  ███      ░███    ░░░  ░███   ░███   ░███  ░███ ░   ░███  ░ ░     ███░   ░███  █ ░  ░███    ░███  ░███        ░███    ░███  ░███░███ ░███  ░███   ░░███
//  ░███████████  ░██████████   ░███████████  ░██████████     ░██████████  ░███████████  ░███░░███░███  ░███████       ░░█████████  ░███   ░███   ░███  ░███     ░███         ███     ░██████    ░██████████   ░███        ░███████████  ░███░░███░███  ░███    ░███
//  ░███░░░░░███  ░███░░░░░███  ░███░░░░░███  ░███░░░░░███    ░███░░░░░███ ░███░░░░░███  ░███ ░░██████  ░███░░███       ░░░░░░░░███ ░░███  █████  ███   ░███     ░███        ███      ░███░░█    ░███░░░░░███  ░███        ░███░░░░░███  ░███ ░░██████  ░███    ░███
//  ░███    ░███  ░███    ░███  ░███    ░███  ░███    ░███    ░███    ░███ ░███    ░███  ░███  ░░█████  ░███ ░░███      ███    ░███  ░░░█████░█████░    ░███     ░███      ████     █ ░███ ░   █ ░███    ░███  ░███      █ ░███    ░███  ░███  ░░█████  ░███    ███
//  █████   █████ █████   █████ █████   █████ ███████████     ███████████  █████   █████ █████  ░░█████ █████ ░░████   ░░█████████     ░░███ ░░███      █████    █████    ███████████ ██████████ █████   █████ ███████████ █████   █████ █████  ░░█████ ██████████
// ░░░░░   ░░░░░ ░░░░░   ░░░░░ ░░░░░   ░░░░░ ░░░░░░░░░░░     ░░░░░░░░░░░  ░░░░░   ░░░░░ ░░░░░    ░░░░░ ░░░░░   ░░░░     ░░░░░░░░░       ░░░   ░░░      ░░░░░    ░░░░░    ░░░░░░░░░░░ ░░░░░░░░░░ ░░░░░   ░░░░░ ░░░░░░░░░░░ ░░░░░   ░░░░░ ░░░░░    ░░░░░ ░░░░░░░░░░
//
//
//    ,ad8888ba,         db         88888888ba,    88b           d88    ,ad8888ba,     ad88888ba
//   d8"'    `"8b       d88b        88      `"8b   888b         d888   d8"'    `"8b   d8"     "8b
//  d8'                d8'`8b       88        `8b  88`8b       d8'88  d8'        `8b  Y8,
//  88                d8'  `8b      88         88  88 `8b     d8' 88  88          88  `Y8aaaaa,
//  88               d8YaaaaY8b     88         88  88  `8b   d8'  88  88          88    `"""""8b,
//  Y8,             d8""""""""8b    88         8P  88   `8b d8'   88  Y8,        ,8P          `8b
//   Y8a.    .a8P  d8'        `8b   88      .a8P   88    `888'    88   Y8a.    .a8P   Y8a     a8P
//    `"Y8888Y"'  d8'          `8b  88888888Y"'    88     `8'     88    `"Y8888Y"'     "Y88888P"
//
// ===============================================================================================
// =================================  IImpactVaultDepositor  =====================================
// ===============================================================================================
// ARAB BANK SWITZZERLAND: https://github.com/ArabBankSwitzerland
// CADMOS: https://github.com/Cadmos-finance

// Primary Author(s)
// N.B.: https://github.com/nboueri
// J.A.T: https://github.com/jat9292

/// @title Interface of the ImpactVaultDepositor Contract
/// @author N.B.
/// @notice Abstract Intermediate contract to deposit non native asset in an Impact Vault
interface IImpactVaultDepositor {
    /* ========== VIEWS ========== */

    /// @notice address of the ImpactVault  associated to the ImpactVaultDepositor
    function ImpactVault() external view returns (address);

    /// @notice address of the positively rebasing asset associated to the ImpactVault
    function asset() external view returns (address);

    /* ========== MUTATIVE FUNCTIONS ========== */

    /// @notice  Deposit amount of asset into the ImpactVault
    /// @dev redundant with ImpactVault deposit method - used to offer a single entry point
    /// @param depositAmount Amount of Asset to Deposit
    function depositAsset(
        uint256 depositAmount
    ) external returns (uint256 sharesCreated);

    /// @notice  Convert amount of token into asset and deposits depositProportion (in wad) of it into the ImpactVault. Remainder is sent back to msg.sender
    /// @param amount Amount of token considered
    /// @param token address of the token to convert-and-deposit
    /// @param depositProportion Proportion of obtained asset to deposit into the impact vault (in wad). Remainder is sent back to msg.sender
    function depositToken(
        uint256 amount,
        address token,
        uint256 depositProportion
    ) external returns (uint256 sharesCreated, uint256 assetReturned);

    /// @notice  Convert amount of ETH into asset and deposits depositProportion (in wad) of it into the ImpactVault. Remainder is sent back to msg.sender
    /// @param depositProportion Proportion of obatined asset to deposit into the impact vault (in wad). Remainder is sent back to msg.sender
    function depositETH(
        uint256 depositProportion
    ) external payable returns (uint256 sharesCreated, uint256 assetReturned);

    /// @notice On standard receive() converts and deposits all received ETH
    receive() external payable;
}


// File src/ImpactVaultDepositor.sol

// Original license: SPDX_License_Identifier: MIT
pragma solidity 0.8.19;

//    █████████   ███████████     █████████   ███████████     ███████████    █████████   ██████   █████ █████   ████     █████████  █████   ███   █████ █████ ███████████ ███████████ ██████████ ███████████   █████         █████████   ██████   █████ ██████████
//   ███░░░░░███ ░░███░░░░░███   ███░░░░░███ ░░███░░░░░███   ░░███░░░░░███  ███░░░░░███ ░░██████ ░░███ ░░███   ███░     ███░░░░░███░░███   ░███  ░░███ ░░███ ░█░░░███░░░█░█░░░░░░███ ░░███░░░░░█░░███░░░░░███ ░░███         ███░░░░░███ ░░██████ ░░███ ░░███░░░░███
//  ░███    ░███  ░███    ░███  ░███    ░███  ░███    ░███    ░███    ░███ ░███    ░███  ░███░███ ░███  ░███  ███      ░███    ░░░  ░███   ░███   ░███  ░███ ░   ░███  ░ ░     ███░   ░███  █ ░  ░███    ░███  ░███        ░███    ░███  ░███░███ ░███  ░███   ░░███
//  ░███████████  ░██████████   ░███████████  ░██████████     ░██████████  ░███████████  ░███░░███░███  ░███████       ░░█████████  ░███   ░███   ░███  ░███     ░███         ███     ░██████    ░██████████   ░███        ░███████████  ░███░░███░███  ░███    ░███
//  ░███░░░░░███  ░███░░░░░███  ░███░░░░░███  ░███░░░░░███    ░███░░░░░███ ░███░░░░░███  ░███ ░░██████  ░███░░███       ░░░░░░░░███ ░░███  █████  ███   ░███     ░███        ███      ░███░░█    ░███░░░░░███  ░███        ░███░░░░░███  ░███ ░░██████  ░███    ░███
//  ░███    ░███  ░███    ░███  ░███    ░███  ░███    ░███    ░███    ░███ ░███    ░███  ░███  ░░█████  ░███ ░░███      ███    ░███  ░░░█████░█████░    ░███     ░███      ████     █ ░███ ░   █ ░███    ░███  ░███      █ ░███    ░███  ░███  ░░█████  ░███    ███
//  █████   █████ █████   █████ █████   █████ ███████████     ███████████  █████   █████ █████  ░░█████ █████ ░░████   ░░█████████     ░░███ ░░███      █████    █████    ███████████ ██████████ █████   █████ ███████████ █████   █████ █████  ░░█████ ██████████
// ░░░░░   ░░░░░ ░░░░░   ░░░░░ ░░░░░   ░░░░░ ░░░░░░░░░░░     ░░░░░░░░░░░  ░░░░░   ░░░░░ ░░░░░    ░░░░░ ░░░░░   ░░░░     ░░░░░░░░░       ░░░   ░░░      ░░░░░    ░░░░░    ░░░░░░░░░░░ ░░░░░░░░░░ ░░░░░   ░░░░░ ░░░░░░░░░░░ ░░░░░   ░░░░░ ░░░░░    ░░░░░ ░░░░░░░░░░
//
//
//    ,ad8888ba,         db         88888888ba,    88b           d88    ,ad8888ba,     ad88888ba
//   d8"'    `"8b       d88b        88      `"8b   888b         d888   d8"'    `"8b   d8"     "8b
//  d8'                d8'`8b       88        `8b  88`8b       d8'88  d8'        `8b  Y8,
//  88                d8'  `8b      88         88  88 `8b     d8' 88  88          88  `Y8aaaaa,
//  88               d8YaaaaY8b     88         88  88  `8b   d8'  88  88          88    `"""""8b,
//  Y8,             d8""""""""8b    88         8P  88   `8b d8'   88  Y8,        ,8P          `8b
//   Y8a.    .a8P  d8'        `8b   88      .a8P   88    `888'    88   Y8a.    .a8P   Y8a     a8P
//    `"Y8888Y"'  d8'          `8b  88888888Y"'    88     `8'     88    `"Y8888Y"'     "Y88888P"
//
// ===============================================================================================
// ==================================  ImpactVaultDepositor  =====================================
// ===============================================================================================
// ARAB BANK SWITZZERLAND: https://github.com/ArabBankSwitzerland
// CADMOS: https://github.com/Cadmos-finance

// Primary Author(s)
// N.B.: https://github.com/nboueri
// J.A.T: https://github.com/jat9292
/// @title ImpactVaultDepositor
/// @author N.B.
/// @notice Abstract Intermediate contract to deposit non native asset in an Impact Vault
abstract contract ImpactVaultDepositor is IImpactVaultDepositor {
    using SafeERC20 for IERC20;

    address public immutable override(IImpactVaultDepositor) ImpactVault;
    address public immutable override(IImpactVaultDepositor) asset;
    uint256 private constant wad = 1e18;
    uint256 private constant maxUint = type(uint256).max;

    /* ========== CONSTRUCTOR ========== */

    constructor(address ImpactVault_) {
        ImpactVault = ImpactVault_;
        address asset_ = IERC4626(ImpactVault_).asset();
        asset = asset_;
        IERC20(asset_).approve(ImpactVault_, maxUint);
    }

    /* ========== INTERNAL FUNCTIONS ========== */

    function _deposit(
        uint256 depositAmount
    ) internal returns (uint256 sharesCreated) {
        sharesCreated = IERC4626(ImpactVault).deposit(
            depositAmount,
            msg.sender
        );
    }

    function _convertToken(
        uint256 amount,
        address token
    ) internal virtual returns (uint256 assetAmount);

    function _convertETH() internal virtual returns (uint256 assetAmount);

    /* ========== MUTATIVE FUNCTIONS ========== */

    /// @notice  Deposit amount of asset into the ImpactVault
    /// @dev redundant with ImpactVault deposit method - used to offer a single entry point
    /// @param depositAmount Amount of Asset to Deposit
    function depositAsset(
        uint256 depositAmount
    ) external override(IImpactVaultDepositor) returns (uint256 sharesCreated) {
        IERC20(asset).safeTransferFrom(
            msg.sender,
            address(this),
            depositAmount
        );
        sharesCreated = _deposit(depositAmount);
    }

    /// @notice  Convert amount of token into asset and deposits depositProportion (in wad) of it into the ImpactVault. Remainder is sent back to msg.sender
    /// @param amount Amount of token considered
    /// @param token address of the token to convert-and-deposit
    /// @param depositProportion Proportion of obtained asset to deposit into the impact vault (in wad). Remainder is sent back to msg.sender

    function depositToken(
        uint256 amount,
        address token,
        uint256 depositProportion
    )
        external
        override(IImpactVaultDepositor)
        returns (uint256 sharesCreated, uint256 assetReturned)
    {
        uint256 assetAmount = _convertToken(amount, token);
        uint256 toDeposit = (depositProportion * assetAmount) / wad;
        sharesCreated = _deposit(toDeposit);
        assetReturned = assetAmount - toDeposit;
        IERC20(asset).safeTransfer(msg.sender, assetReturned);
    }

    /// @notice  Convert amount of ETH into asset and deposits depositProportion (in wad) of it into the ImpactVault. Remainder is sent back to msg.sender
    /// @param depositProportion Proportion of obtained asset to deposit into the impact vault (in wad). Remainder is sent back to msg.sender
    function depositETH(
        uint256 depositProportion
    )
        public
        payable
        override(IImpactVaultDepositor)
        returns (uint256 sharesCreated, uint256 assetReturned)
    {
        uint256 assetAmount = _convertETH();
        uint256 toDeposit = (depositProportion * assetAmount) / wad;
        sharesCreated = _deposit(toDeposit);
        assetReturned = assetAmount - toDeposit;
        IERC20(asset).safeTransfer(msg.sender, assetReturned);
    }

    /// @notice On standard receive() converts and deposits all received ETH
    receive() external payable override(IImpactVaultDepositor) {
        depositETH(wad);
    }
}

// File src/LidoImpactVaultDepositor.sol

// Original license: SPDX_License_Identifier: MIT
pragma solidity 0.8.19;

//    █████████   ███████████     █████████   ███████████     ███████████    █████████   ██████   █████ █████   ████     █████████  █████   ███   █████ █████ ███████████ ███████████ ██████████ ███████████   █████         █████████   ██████   █████ ██████████
//   ███░░░░░███ ░░███░░░░░███   ███░░░░░███ ░░███░░░░░███   ░░███░░░░░███  ███░░░░░███ ░░██████ ░░███ ░░███   ███░     ███░░░░░███░░███   ░███  ░░███ ░░███ ░█░░░███░░░█░█░░░░░░███ ░░███░░░░░█░░███░░░░░███ ░░███         ███░░░░░███ ░░██████ ░░███ ░░███░░░░███
//  ░███    ░███  ░███    ░███  ░███    ░███  ░███    ░███    ░███    ░███ ░███    ░███  ░███░███ ░███  ░███  ███      ░███    ░░░  ░███   ░███   ░███  ░███ ░   ░███  ░ ░     ███░   ░███  █ ░  ░███    ░███  ░███        ░███    ░███  ░███░███ ░███  ░███   ░░███
//  ░███████████  ░██████████   ░███████████  ░██████████     ░██████████  ░███████████  ░███░░███░███  ░███████       ░░█████████  ░███   ░███   ░███  ░███     ░███         ███     ░██████    ░██████████   ░███        ░███████████  ░███░░███░███  ░███    ░███
//  ░███░░░░░███  ░███░░░░░███  ░███░░░░░███  ░███░░░░░███    ░███░░░░░███ ░███░░░░░███  ░███ ░░██████  ░███░░███       ░░░░░░░░███ ░░███  █████  ███   ░███     ░███        ███      ░███░░█    ░███░░░░░███  ░███        ░███░░░░░███  ░███ ░░██████  ░███    ░███
//  ░███    ░███  ░███    ░███  ░███    ░███  ░███    ░███    ░███    ░███ ░███    ░███  ░███  ░░█████  ░███ ░░███      ███    ░███  ░░░█████░█████░    ░███     ░███      ████     █ ░███ ░   █ ░███    ░███  ░███      █ ░███    ░███  ░███  ░░█████  ░███    ███
//  █████   █████ █████   █████ █████   █████ ███████████     ███████████  █████   █████ █████  ░░█████ █████ ░░████   ░░█████████     ░░███ ░░███      █████    █████    ███████████ ██████████ █████   █████ ███████████ █████   █████ █████  ░░█████ ██████████
// ░░░░░   ░░░░░ ░░░░░   ░░░░░ ░░░░░   ░░░░░ ░░░░░░░░░░░     ░░░░░░░░░░░  ░░░░░   ░░░░░ ░░░░░    ░░░░░ ░░░░░   ░░░░     ░░░░░░░░░       ░░░   ░░░      ░░░░░    ░░░░░    ░░░░░░░░░░░ ░░░░░░░░░░ ░░░░░   ░░░░░ ░░░░░░░░░░░ ░░░░░   ░░░░░ ░░░░░    ░░░░░ ░░░░░░░░░░
//
//
//    ,ad8888ba,         db         88888888ba,    88b           d88    ,ad8888ba,     ad88888ba
//   d8"'    `"8b       d88b        88      `"8b   888b         d888   d8"'    `"8b   d8"     "8b
//  d8'                d8'`8b       88        `8b  88`8b       d8'88  d8'        `8b  Y8,
//  88                d8'  `8b      88         88  88 `8b     d8' 88  88          88  `Y8aaaaa,
//  88               d8YaaaaY8b     88         88  88  `8b   d8'  88  88          88    `"""""8b,
//  Y8,             d8""""""""8b    88         8P  88   `8b d8'   88  Y8,        ,8P          `8b
//   Y8a.    .a8P  d8'        `8b   88      .a8P   88    `888'    88   Y8a.    .a8P   Y8a     a8P
//    `"Y8888Y"'  d8'          `8b  88888888Y"'    88     `8'     88    `"Y8888Y"'     "Y88888P"
//
// ===============================================================================================
// ================================  LidoImpactVaultDepositor  ===================================
// ===============================================================================================
// ARAB BANK SWITZZERLAND: https://github.com/ArabBankSwitzerland
// CADMOS: https://github.com/Cadmos-finance

// Primary Author(s)
// N.B.: https://github.com/nboueri
// J.A.T: https://github.com/jat9292
interface Lido {
    function submit(
        address referral
    ) external payable returns (uint256 assetAmount);
}

/// @title LidoImpactVaultDepositor
/// @author N.B.
/// @notice ImpactVaultDepositor for the Lido Impact Vault
contract LidoImpactVaultDepositor is ImpactVaultDepositor {
    address private immutable _lidoReferral; //Referral parameter to pass to Lido when depositing ETH

    error NotImplementedError();

    /* ========== CONSTRUCTOR ========== */

    constructor(
        address lidoReferral_,
        address impactVault_
    ) ImpactVaultDepositor(impactVault_) {
        _lidoReferral = lidoReferral_;
    }

    /* ========== INTERNAL FUNCTIONS ========== */

    /// @dev Only supported deposit are ETH and STETH
    function _convertToken(
        uint256,
        address
    ) internal pure override(ImpactVaultDepositor) returns (uint256) {
        revert NotImplementedError();
    }

    /// @dev deposits ETH within Lido to obtain STETH
    function _convertETH()
        internal
        override(ImpactVaultDepositor)
        returns (uint256 assetAmount)
    {
        Lido(asset).submit{value: msg.value}(_lidoReferral);
        assetAmount = IERC20(asset).balanceOf(address(this));
    }
}

{
  "compilationTarget": {
    "LidoImpactVaultDepositor.sol": "LidoImpactVaultDepositor"
  },
  "evmVersion": "paris",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 1000
  },
  "remappings": []
}