/**
 *Submitted for verification at SonicScan.org on 2025-04-08
*/

/**
 *Submitted for verification at berascan.com on 2025-02-08
*/

// SPDX-License-Identifier: AGPL-3.0
pragma solidity >=0.8.18 ^0.8.0 ^0.8.1 ^0.8.18;

// lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol

// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

/**
 * @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);
}

// lib/openzeppelin-contracts/contracts/token/ERC20/extensions/IERC20Permit.sol

// OpenZeppelin Contracts (last updated v4.9.4) (token/ERC20/extensions/IERC20Permit.sol)

/**
 * @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);
}

// lib/openzeppelin-contracts/contracts/utils/Address.sol

// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)

/**
 * @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);
        }
    }
}

// lib/openzeppelin-contracts/contracts/utils/Context.sol

// OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.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 Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

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

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

// lib/openzeppelin-contracts/contracts/utils/math/Math.sol

// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol)

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    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);
        }
    }
}

// lib/tokenized-strategy-periphery/src/utils/Governance.sol

contract Governance {
    /// @notice Emitted when the governance address is updated.
    event GovernanceTransferred(
        address indexed previousGovernance,
        address indexed newGovernance
    );

    modifier onlyGovernance() {
        _checkGovernance();
        _;
    }

    /// @notice Checks if the msg sender is the governance.
    function _checkGovernance() internal view virtual {
        require(governance == msg.sender, "!governance");
    }

    /// @notice Address that can set the default base fee and provider
    address public governance;

    constructor(address _governance) {
        governance = _governance;

        emit GovernanceTransferred(address(0), _governance);
    }

    /**
     * @notice Sets a new address as the governance of the contract.
     * @dev Throws if the caller is not current governance.
     * @param _newGovernance The new governance address.
     */
    function transferGovernance(
        address _newGovernance
    ) external virtual onlyGovernance {
        require(_newGovernance != address(0), "ZERO ADDRESS");
        address oldGovernance = governance;
        governance = _newGovernance;

        emit GovernanceTransferred(oldGovernance, _newGovernance);
    }
}

// lib/yearn-vaults-v3/contracts/interfaces/Roles.sol

// prettier-ignore
library Roles {
    uint256 internal constant ADD_STRATEGY_MANAGER             = 1;
    uint256 internal constant REVOKE_STRATEGY_MANAGER          = 2;
    uint256 internal constant FORCE_REVOKE_MANAGER             = 4;
    uint256 internal constant ACCOUNTANT_MANAGER               = 8;
    uint256 internal constant QUEUE_MANAGER                   = 16;
    uint256 internal constant REPORTING_MANAGER               = 32;
    uint256 internal constant DEBT_MANAGER                    = 64;
    uint256 internal constant MAX_DEBT_MANAGER               = 128;
    uint256 internal constant DEPOSIT_LIMIT_MANAGER          = 256;
    uint256 internal constant WITHDRAW_LIMIT_MANAGER         = 512;
    uint256 internal constant MINIMUM_IDLE_MANAGER          = 1024;
    uint256 internal constant PROFIT_UNLOCK_MANAGER         = 2048;
    uint256 internal constant DEBT_PURCHASER                = 4096;
    uint256 internal constant EMERGENCY_MANAGER             = 8192;
    uint256 internal constant ALL                          = 16383;
}

// src/managers/Positions.sol

contract Positions {
    /// @notice Emitted when a new address is set for a position.
    event UpdatePositionHolder(
        bytes32 indexed position,
        address indexed newAddress
    );

    /// @notice Emitted when a new set of roles is set for a position
    event UpdatePositionRoles(bytes32 indexed position, uint256 newRoles);

    /// @notice Position struct
    struct Position {
        address holder;
        uint96 roles;
    }

    /// @notice Only allow position holder to call.
    modifier onlyPositionHolder(bytes32 _positionId) {
        _isPositionHolder(_positionId);
        _;
    }

    /// @notice Check if the msg sender is specified position holder.
    function _isPositionHolder(bytes32 _positionId) internal view virtual {
        require(msg.sender == getPositionHolder(_positionId), "!allowed");
    }

    /// @notice Mapping of position ID to position information.
    mapping(bytes32 => Position) internal _positions;

    /**
     * @notice Setter function for updating a positions holder.
     */
    function _setPositionHolder(
        bytes32 _position,
        address _newHolder
    ) internal virtual {
        _positions[_position].holder = _newHolder;

        emit UpdatePositionHolder(_position, _newHolder);
    }

    /**
     * @notice Setter function for updating a positions roles.
     */
    function _setPositionRoles(
        bytes32 _position,
        uint256 _newRoles
    ) internal virtual {
        _positions[_position].roles = uint96(_newRoles);

        emit UpdatePositionRoles(_position, _newRoles);
    }

    /**
     * @notice Get the address and roles given to a specific position.
     * @param _positionId The position identifier.
     * @return The address that holds that position.
     * @return The roles given to the specified position.
     */
    function getPosition(
        bytes32 _positionId
    ) public view virtual returns (address, uint256) {
        Position memory _position = _positions[_positionId];
        return (_position.holder, uint256(_position.roles));
    }

    /**
     * @notice Get the current address assigned to a specific position.
     * @param _positionId The position identifier.
     * @return The current address assigned to the specified position.
     */
    function getPositionHolder(
        bytes32 _positionId
    ) public view virtual returns (address) {
        return _positions[_positionId].holder;
    }

    /**
     * @notice Get the current roles given to a specific position ID.
     * @param _positionId The position identifier.
     * @return The current roles given to the specified position ID.
     */
    function getPositionRoles(
        bytes32 _positionId
    ) public view virtual returns (uint256) {
        return uint256(_positions[_positionId].roles);
    }
}

// lib/openzeppelin-contracts/contracts/token/ERC20/extensions/IERC20Metadata.sol

// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

/**
 * @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);
}

// lib/tokenized-strategy-periphery/src/utils/Governance2Step.sol

contract Governance2Step is Governance {
    /// @notice Emitted when the pending governance address is set.
    event UpdatePendingGovernance(address indexed newPendingGovernance);

    /// @notice Address that is set to take over governance.
    address public pendingGovernance;

    constructor(address _governance) Governance(_governance) {}

    /**
     * @notice Sets a new address as the `pendingGovernance` of the contract.
     * @dev Throws if the caller is not current governance.
     * @param _newGovernance The new governance address.
     */
    function transferGovernance(
        address _newGovernance
    ) external virtual override onlyGovernance {
        require(_newGovernance != address(0), "ZERO ADDRESS");
        pendingGovernance = _newGovernance;

        emit UpdatePendingGovernance(_newGovernance);
    }

    /**
     * @notice Allows the `pendingGovernance` to accept the role.
     */
    function acceptGovernance() external virtual {
        require(msg.sender == pendingGovernance, "!pending governance");

        emit GovernanceTransferred(governance, msg.sender);

        governance = msg.sender;
        pendingGovernance = address(0);
    }
}

// lib/openzeppelin-contracts/contracts/interfaces/IERC4626.sol

// OpenZeppelin Contracts (last updated v4.9.0) (interfaces/IERC4626.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 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);
}

// src/registry/ReleaseRegistry.sol

interface IFactory {
    function apiVersion() external view returns (string memory);
}

interface ITokenizedStrategy {
    function apiVersion() external view returns (string memory);
}

/**
 * @title YearnV3 Release Registry
 * @author yearn.finance
 * @notice
 *  Used by Yearn Governance to track on chain all
 *  releases of the V3 vaults by API Version.
 */
contract ReleaseRegistry is Governance2Step {
    event NewRelease(
        uint256 indexed releaseId,
        address indexed factory,
        address indexed tokenizedStrategy,
        string apiVersion
    );

    string public constant name = "Yearn V3 Release Registry";

    // The total number of releases that have been deployed
    uint256 public numReleases;

    // Mapping of release id starting at 0 to the address
    // of the corresponding factory for that release.
    mapping(uint256 => address) public factories;

    // Mapping of release id starting at 0 to the address
    // of the corresponding Tokenized Strategy for that release.
    mapping(uint256 => address) public tokenizedStrategies;

    // Mapping of the API version for a specific release to the
    // place in the order it was released.
    mapping(string => uint256) public releaseTargets;

    constructor(address _governance) Governance2Step(_governance) {}

    /**
     * @notice Returns the latest factory.
     * @return The address of the factory for the latest release.
     */
    function latestFactory() external view virtual returns (address) {
        uint256 _numReleases = numReleases;
        if (_numReleases == 0) return address(0);
        return factories[numReleases - 1];
    }

    /**
     * @notice Returns the latest tokenized strategy.
     * @return The address of the tokenized strategy for the latest release.
     */
    function latestTokenizedStrategy() external view virtual returns (address) {
        uint256 _numReleases = numReleases;
        if (_numReleases == 0) return address(0);
        return tokenizedStrategies[numReleases - 1];
    }

    /**
     * @notice Returns the api version of the latest release.
     * @return The api version of the latest release.
     */
    function latestRelease() external view virtual returns (string memory) {
        uint256 _numReleases = numReleases;
        if (_numReleases == 0) return "";
        return IFactory(factories[numReleases - 1]).apiVersion();
    }

    /**
     * @notice Issue a new release using a deployed factory.
     * @dev Stores the factory address in `factories` and the release
     * target in `releaseTargets` with its associated API version.
     *
     *   Throws if caller isn't `governance`.
     *   Throws if the api version is the same as the previous release.
     *   Throws if the factory does not have the same api version as the tokenized strategy.
     *   Emits a `NewRelease` event.
     *
     * @param _factory The factory that will be used create new vaults.
     */
    function newRelease(
        address _factory,
        address _tokenizedStrategy
    ) external virtual onlyGovernance {
        // Check if the release is different from the current one
        uint256 releaseId = numReleases;

        string memory apiVersion = IFactory(_factory).apiVersion();
        string memory tokenizedStrategyApiVersion = ITokenizedStrategy(
            _tokenizedStrategy
        ).apiVersion();

        require(
            keccak256(bytes(apiVersion)) ==
                keccak256(bytes(tokenizedStrategyApiVersion)),
            "ReleaseRegistry: api version mismatch"
        );

        if (releaseId > 0) {
            // Make sure this isn't the same as the last one
            require(
                keccak256(
                    bytes(IFactory(factories[releaseId - 1]).apiVersion())
                ) != keccak256(bytes(apiVersion)),
                "ReleaseRegistry: same api version"
            );
        }

        // Update latest release.
        factories[releaseId] = _factory;
        tokenizedStrategies[releaseId] = _tokenizedStrategy;

        // Set the api to the target.
        releaseTargets[apiVersion] = releaseId;

        // Increase our number of releases.
        numReleases = releaseId + 1;

        // Log the release for external listeners
        emit NewRelease(releaseId, _factory, _tokenizedStrategy, apiVersion);
    }
}

// lib/openzeppelin-contracts/contracts/token/ERC20/ERC20.sol

// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.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 ERC20 is Context, IERC20, IERC20Metadata {
    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.
     */
    constructor(string memory name_, string memory symbol_) {
        _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 {}
}

// lib/openzeppelin-contracts/contracts/token/ERC20/utils/SafeERC20.sol

// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)

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

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

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

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

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

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

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

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

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

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

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

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

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

// lib/yearn-vaults-v3/contracts/interfaces/IVault.sol

interface IVault is IERC4626 {
    // STRATEGY EVENTS
    event StrategyChanged(address indexed strategy, uint256 change_type);
    event StrategyReported(
        address indexed strategy,
        uint256 gain,
        uint256 loss,
        uint256 current_debt,
        uint256 protocol_fees,
        uint256 total_fees,
        uint256 total_refunds
    );
    // DEBT MANAGEMENT EVENTS
    event DebtUpdated(
        address indexed strategy,
        uint256 current_debt,
        uint256 new_debt
    );
    // ROLE UPDATES
    event RoleSet(address indexed account, uint256 role);
    event UpdateRoleManager(address indexed role_manager);

    event UpdateAccountant(address indexed accountant);
    event UpdateDefaultQueue(address[] new_default_queue);
    event UpdateUseDefaultQueue(bool use_default_queue);
    event UpdatedMaxDebtForStrategy(
        address indexed sender,
        address indexed strategy,
        uint256 new_debt
    );
    event UpdateAutoAllocate(bool auto_allocate);
    event UpdateDepositLimit(uint256 deposit_limit);
    event UpdateMinimumTotalIdle(uint256 minimum_total_idle);
    event UpdateProfitMaxUnlockTime(uint256 profit_max_unlock_time);
    event DebtPurchased(address indexed strategy, uint256 amount);
    event Shutdown();

    struct StrategyParams {
        uint256 activation;
        uint256 last_report;
        uint256 current_debt;
        uint256 max_debt;
    }

    function FACTORY() external view returns (uint256);

    function strategies(address) external view returns (StrategyParams memory);

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

    function use_default_queue() external view returns (bool);

    function auto_allocate() external view returns (bool);

    function minimum_total_idle() external view returns (uint256);

    function deposit_limit() external view returns (uint256);

    function deposit_limit_module() external view returns (address);

    function withdraw_limit_module() external view returns (address);

    function accountant() external view returns (address);

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

    function role_manager() external view returns (address);

    function future_role_manager() external view returns (address);

    function isShutdown() external view returns (bool);

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

    function initialize(
        address,
        string memory,
        string memory,
        address,
        uint256
    ) external;

    function setName(string memory) external;

    function setSymbol(string memory) external;

    function set_accountant(address new_accountant) external;

    function set_default_queue(address[] memory new_default_queue) external;

    function set_use_default_queue(bool) external;

    function set_auto_allocate(bool) external;

    function set_deposit_limit(uint256 deposit_limit) external;

    function set_deposit_limit(
        uint256 deposit_limit,
        bool should_override
    ) external;

    function set_deposit_limit_module(
        address new_deposit_limit_module
    ) external;

    function set_deposit_limit_module(
        address new_deposit_limit_module,
        bool should_override
    ) external;

    function set_withdraw_limit_module(
        address new_withdraw_limit_module
    ) external;

    function set_minimum_total_idle(uint256 minimum_total_idle) external;

    function setProfitMaxUnlockTime(
        uint256 new_profit_max_unlock_time
    ) external;

    function set_role(address account, uint256 role) external;

    function add_role(address account, uint256 role) external;

    function remove_role(address account, uint256 role) external;

    function transfer_role_manager(address role_manager) external;

    function accept_role_manager() external;

    function unlockedShares() external view returns (uint256);

    function pricePerShare() external view returns (uint256);

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

    function process_report(
        address strategy
    ) external returns (uint256, uint256);

    function buy_debt(address strategy, uint256 amount) external;

    function add_strategy(address new_strategy) external;

    function revoke_strategy(address strategy) external;

    function force_revoke_strategy(address strategy) external;

    function update_max_debt_for_strategy(
        address strategy,
        uint256 new_max_debt
    ) external;

    function update_debt(
        address strategy,
        uint256 target_debt
    ) external returns (uint256);

    function update_debt(
        address strategy,
        uint256 target_debt,
        uint256 max_loss
    ) external returns (uint256);

    function shutdown_vault() external;

    function totalIdle() external view returns (uint256);

    function totalDebt() external view returns (uint256);

    function apiVersion() external view returns (string memory);

    function assess_share_of_unrealised_losses(
        address strategy,
        uint256 assets_needed
    ) external view returns (uint256);

    function profitMaxUnlockTime() external view returns (uint256);

    function fullProfitUnlockDate() external view returns (uint256);

    function profitUnlockingRate() external view returns (uint256);

    function lastProfitUpdate() external view returns (uint256);

    //// NON-STANDARD ERC-4626 FUNCTIONS \\\\

    function withdraw(
        uint256 assets,
        address receiver,
        address owner,
        uint256 max_loss
    ) external returns (uint256);

    function withdraw(
        uint256 assets,
        address receiver,
        address owner,
        uint256 max_loss,
        address[] memory strategies
    ) external returns (uint256);

    function redeem(
        uint256 shares,
        address receiver,
        address owner,
        uint256 max_loss
    ) external returns (uint256);

    function redeem(
        uint256 shares,
        address receiver,
        address owner,
        uint256 max_loss,
        address[] memory strategies
    ) external returns (uint256);

    function maxWithdraw(
        address owner,
        uint256 max_loss
    ) external view returns (uint256);

    function maxWithdraw(
        address owner,
        uint256 max_loss,
        address[] memory strategies
    ) external view returns (uint256);

    function maxRedeem(
        address owner,
        uint256 max_loss
    ) external view returns (uint256);

    function maxRedeem(
        address owner,
        uint256 max_loss,
        address[] memory strategies
    ) external view returns (uint256);

    //// NON-STANDARD ERC-20 FUNCTIONS \\\\

    function DOMAIN_SEPARATOR() external view returns (bytes32);

    function permit(
        address owner,
        address spender,
        uint256 amount,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (bool);
}

// lib/yearn-vaults-v3/contracts/interfaces/IVaultFactory.sol

interface IVaultFactory_0 {
    event NewVault(address indexed vaultAddress, address indexed asset);
    event UpdateProtocolFeeBps(
        uint16 oldProtocolFeeBps,
        uint16 newProtocolFeeBps
    );
    event UpdateProtocolFeeRecipient(
        address oldProtocolFeeRecipient,
        address newProtocolFeeRecipient
    );
    event UpdateCustomProtocolFee(address vault, uint16 newCustomProtocolFee);
    event RemovedCustomProtocolFee(address vault);
    event FactoryShutdown();
    event UpdatePendingGovernance(address newPendingGovernance);
    event GovernanceTransferred(
        address previousGovernance,
        address newGovernance
    );

    function shutdown() external view returns (bool);

    function governance() external view returns (address);

    function pendingGovernance() external view returns (address);

    function name() external view returns (string memory);

    function use_custom_protocol_fee(address) external view returns (bool);

    function deploy_new_vault(
        address asset,
        string memory name,
        string memory symbol,
        address role_manager,
        uint256 profit_max_unlock_time
    ) external returns (address);

    function vault_original() external view returns (address);

    function apiVersion() external view returns (string memory);

    function protocol_fee_config()
        external
        view
        returns (uint16 fee_bps, address fee_recipient);

    function protocol_fee_config(
        address vault
    ) external view returns (uint16 fee_bps, address fee_recipient);

    function set_protocol_fee_bps(uint16 new_protocol_fee_bps) external;

    function set_protocol_fee_recipient(
        address new_protocol_fee_recipient
    ) external;

    function set_custom_protocol_fee_bps(
        address vault,
        uint16 new_custom_protocol_fee
    ) external;

    function remove_custom_protocol_fee(address vault) external;

    function shutdown_factory() external;

    function transferGovernance(address new_governance) external;

    function acceptGovernance() external;
}

// src/registry/Registry.sol

interface IVaultFactory_1 {
    function deploy_new_vault(
        address asset,
        string memory name,
        string memory symbol,
        address role_manager,
        uint256 profit_max_unlock_time
    ) external returns (address);

    function apiVersion() external view returns (string memory);
}

/**
 * @title YearnV3 Registry
 * @author yearn.finance
 * @notice
 *  Serves as an on chain registry to track any Yearn V3
 *  vaults and strategies that a certain party wants to
 *  endorse.
 *
 *  Can also be used to deploy new vaults of any specific
 *  API version.
 */
contract Registry is Governance {
    /// @notice Emitted when a new vault is deployed or added.
    event NewEndorsedVault(
        address indexed vault,
        address indexed asset,
        uint256 releaseVersion,
        uint256 vaultType
    );

    /// @notice Emitted when a vault is removed.
    event RemovedVault(
        address indexed vault,
        address indexed asset,
        uint256 releaseVersion,
        uint256 vaultType
    );

    /// @notice Emitted when a vault is tagged with a string.
    event VaultTagged(address indexed vault);

    /// @notice Emitted when gov adds ore removes a `tagger`.
    event UpdateTagger(address indexed account, bool status);

    /// @notice Emitted when gov adds ore removes a `endorser`.
    event UpdateEndorser(address indexed account, bool status);

    /// @notice Can only be gov or an `endorser`.
    modifier onlyEndorsers() {
        _isEndorser();
        _;
    }

    /// @notice Can only be gov or a `tagger`.
    modifier onlyTaggers() {
        _isTagger();
        _;
    }

    /// @notice Check is gov or an `endorser`.
    function _isEndorser() internal view {
        require(msg.sender == governance || endorsers[msg.sender], "!endorser");
    }

    /// @notice Check is gov or a `tagger`.
    function _isTagger() internal view {
        require(msg.sender == governance || taggers[msg.sender], "!tagger");
    }

    // Struct stored for every endorsed vault or strategy for
    // off chain use to easily retrieve info.
    struct Info {
        // The token thats being used.
        address asset;
        // The release number corresponding to the release registries version.
        uint96 releaseVersion;
        // Type of vault.
        uint64 vaultType;
        // Time when the vault was deployed for easier indexing.
        uint128 deploymentTimestamp;
        // Index the vault is at in array for easy removals.
        uint64 index;
        // String so that management can tag a vault with any info for FE's.
        string tag;
    }

    // Address used to get the specific versions from.
    address public immutable releaseRegistry;

    // Default type used for Multi strategy "Allocator" vaults.
    uint256 public constant MULTI_STRATEGY_TYPE = 1;

    // Default type used for Single "Tokenized" Strategy vaults.
    uint256 public constant SINGLE_STRATEGY_TYPE = 2;

    // Custom name for this Registry.
    string public name;

    // Old version of the registry to fall back to if exists.
    address public legacyRegistry;

    // Mapping for any address that is allowed to tag a vault.
    mapping(address => bool) public taggers;

    // Mapping for any address that is allowed to deploy or endorse.
    mapping(address => bool) public endorsers;

    // vault/strategy address => Info struct.
    mapping(address => Info) public vaultInfo;

    // Mapping to check if a specific `asset` has a vault.
    mapping(address => bool) public assetIsUsed;

    // asset => array of all endorsed vaults.
    mapping(address => address[]) internal _endorsedVaults;

    // Array of all tokens used as the underlying.
    address[] public assets;

    /**
     * @param _governance Address to set as owner of the Registry.
     * @param _name The custom string for this custom registry to be called.
     * @param _releaseRegistry The Permissionless releaseRegistry to deploy vaults through.
     */
    constructor(
        address _governance,
        string memory _name,
        address _releaseRegistry
    ) Governance(_governance) {
        // Set name.
        name = _name;
        // Set releaseRegistry.
        releaseRegistry = _releaseRegistry;
    }

    /**
     * @notice Returns the total number of assets being used as the underlying.
     * @return The amount of assets.
     */
    function numAssets() external view virtual returns (uint256) {
        return assets.length;
    }

    /**
     * @notice Get the full array of tokens being used.
     * @return The full array of underlying tokens being used/.
     */
    function getAssets() external view virtual returns (address[] memory) {
        return assets;
    }

    /**
     * @notice The amount of endorsed vaults for a specific token.
     * @return The amount of endorsed vaults.
     */
    function numEndorsedVaults(
        address _asset
    ) public view virtual returns (uint256) {
        return _endorsedVaults[_asset].length;
    }

    /**
     * @notice Get the array of vaults endorsed for an `_asset`.
     * @param _asset The underlying token used by the vaults.
     * @return The endorsed vaults.
     */
    function getEndorsedVaults(
        address _asset
    ) external view virtual returns (address[] memory) {
        return _endorsedVaults[_asset];
    }

    /**
     * @notice Get all endorsed vaults deployed using the Registry.
     * @dev This will return a nested array of all vaults deployed
     * separated by their underlying asset.
     *
     * This is only meant for off chain viewing and should not be used during any
     * on chain tx's.
     *
     * @return allEndorsedVaults A nested array containing all vaults.
     */
    function getAllEndorsedVaults()
        external
        view
        virtual
        returns (address[][] memory allEndorsedVaults)
    {
        address[] memory allAssets = assets;
        uint256 length = assets.length;

        allEndorsedVaults = new address[][](length);
        for (uint256 i; i < length; ++i) {
            allEndorsedVaults[i] = _endorsedVaults[allAssets[i]];
        }
    }

    /**
     * @notice Check if a vault is endorsed in this registry.
     * @dev This will check if the `asset` variable in the struct has been
     *   set for an easy external view check.
     * @param _vault Address of the vault to check.
     * @return . The vaults endorsement status.
     */
    function isEndorsed(address _vault) external view virtual returns (bool) {
        return vaultInfo[_vault].asset != address(0) || isLegacyVault(_vault);
    }

    /**
     * @notice Check if a vault is endorsed in the legacy registry.
     * @param _vault The vault to check.
     * @return True if the vault is endorsed in the legacy registry, false otherwise.
     */
    function isLegacyVault(address _vault) public view virtual returns (bool) {
        address _legacy = legacyRegistry;

        if (_legacy == address(0)) return false;

        return Registry(_legacy).isEndorsed(_vault);
    }

    /**
     * @notice
     *    Create and endorse a new multi strategy "Allocator"
     *      vault and endorse it in this registry.
     * @dev
     *   Throws if caller isn't `owner`.
     *   Throws if no releases are registered yet.
     *   Emits a `NewEndorsedVault` event.
     * @param _asset The asset that may be deposited into the new Vault.
     * @param _name Specify a custom Vault name. .
     * @param _symbol Specify a custom Vault symbol name.
     * @param _roleManager The address authorized for guardian interactions in the new Vault.
     * @param _profitMaxUnlockTime The time strategy profits will unlock over.
     * @return _vault address of the newly-deployed vault
     */
    function newEndorsedVault(
        address _asset,
        string memory _name,
        string memory _symbol,
        address _roleManager,
        uint256 _profitMaxUnlockTime
    ) public virtual returns (address _vault) {
        return
            newEndorsedVault(
                _asset,
                _name,
                _symbol,
                _roleManager,
                _profitMaxUnlockTime,
                0 // Default to latest version.
            );
    }

    /**
     * @notice
     *    Create and endorse a new multi strategy "Allocator"
     *      vault and endorse it in this registry.
     * @dev
     *   Throws if caller isn't `owner`.
     *   Throws if no releases are registered yet.
     *   Emits a `NewEndorsedVault` event.
     * @param _asset The asset that may be deposited into the new Vault.
     * @param _name Specify a custom Vault name. .
     * @param _symbol Specify a custom Vault symbol name.
     * @param _roleManager The address authorized for guardian interactions in the new Vault.
     * @param _profitMaxUnlockTime The time strategy profits will unlock over.
     * @param _releaseDelta The number of releases prior to the latest to use as a target. NOTE: Set to 0 for latest.
     * @return _vault address of the newly-deployed vault
     */
    function newEndorsedVault(
        address _asset,
        string memory _name,
        string memory _symbol,
        address _roleManager,
        uint256 _profitMaxUnlockTime,
        uint256 _releaseDelta
    ) public virtual onlyEndorsers returns (address _vault) {
        // Get the target release based on the delta given.
        uint256 _releaseTarget = ReleaseRegistry(releaseRegistry)
            .numReleases() -
            1 -
            _releaseDelta;

        // Get the factory address for that specific Api version.
        address factory = ReleaseRegistry(releaseRegistry).factories(
            _releaseTarget
        );

        // Make sure we got an actual factory
        require(factory != address(0), "Registry: unknown release");

        // Deploy New vault.
        _vault = IVaultFactory_1(factory).deploy_new_vault(
            _asset,
            _name,
            _symbol,
            _roleManager,
            _profitMaxUnlockTime
        );

        // Register the vault with this Registry
        _registerVault(
            _vault,
            _asset,
            _releaseTarget,
            MULTI_STRATEGY_TYPE,
            block.timestamp
        );
    }

    /**
     * @notice Endorse an already deployed multi strategy vault.
     * @dev To be used with default values for `_releaseDelta`, `_vaultType`
     * and `_deploymentTimestamp`.
     *
     * @param _vault Address of the vault to endorse.
     */
    function endorseMultiStrategyVault(address _vault) external virtual {
        endorseVault(_vault, 0, MULTI_STRATEGY_TYPE, 0);
    }

    /**
     * @notice Endorse an already deployed Single Strategy vault.
     * @dev To be used with default values for `_releaseDelta`, `_vaultType`
     * and `_deploymentTimestamp`.
     *
     * @param _vault Address of the vault to endorse.
     */
    function endorseSingleStrategyVault(address _vault) external virtual {
        endorseVault(_vault, 0, SINGLE_STRATEGY_TYPE, 0);
    }

    /**
     * @notice
     *    Adds an existing vault to the list of "endorsed" vaults for that asset.
     * @dev
     *    Throws if caller isn't `owner`.
     *    Throws if no releases are registered yet.
     *    Throws if `vault`'s api version does not match the release specified.
     *    Emits a `NewEndorsedVault` event.
     * @param _vault The vault that will be endorsed by the Registry.
     * @param _releaseDelta Specify the number of releases prior to the latest to use as a target.
     * @param _vaultType Type of vault to endorse.
     * @param _deploymentTimestamp The timestamp of when the vault was deployed for FE use.
     */
    function endorseVault(
        address _vault,
        uint256 _releaseDelta,
        uint256 _vaultType,
        uint256 _deploymentTimestamp
    ) public virtual onlyEndorsers {
        // Cannot endorse twice.
        require(vaultInfo[_vault].asset == address(0), "endorsed");
        require(_vaultType != 0, "no 0 type");
        require(_vaultType <= type(uint128).max, "type too high");
        require(_deploymentTimestamp <= block.timestamp, "!deployment time");

        // Will underflow if no releases created yet, or targeting prior to release history
        uint256 _releaseTarget = ReleaseRegistry(releaseRegistry)
            .numReleases() -
            1 -
            _releaseDelta; // dev: no releases

        // Get the API version for the target specified
        string memory apiVersion = IVaultFactory_1(
            ReleaseRegistry(releaseRegistry).factories(_releaseTarget)
        ).apiVersion();

        require(
            keccak256(bytes(IVault(_vault).apiVersion())) ==
                keccak256(bytes((apiVersion))),
            "Wrong API Version"
        );

        // Add to the end of the list of vaults for asset
        _registerVault(
            _vault,
            IVault(_vault).asset(),
            _releaseTarget,
            _vaultType,
            _deploymentTimestamp
        );
    }

    /**
     * @dev Function used to register a newly deployed or added vault.
     *
     * This well set all of the values for the vault in the `vaultInfo`
     * mapping as well as add the vault and the underlying asset to any
     * relevant arrays for tracking.
     *
     */
    function _registerVault(
        address _vault,
        address _asset,
        uint256 _releaseTarget,
        uint256 _vaultType,
        uint256 _deploymentTimestamp
    ) internal virtual {
        // Set the Info struct for this vault
        vaultInfo[_vault] = Info({
            asset: _asset,
            releaseVersion: uint96(_releaseTarget),
            vaultType: uint64(_vaultType),
            deploymentTimestamp: uint128(_deploymentTimestamp),
            index: uint64(_endorsedVaults[_asset].length),
            tag: ""
        });

        // Add to the endorsed vaults array.
        _endorsedVaults[_asset].push(_vault);

        if (!assetIsUsed[_asset]) {
            // We have a new asset to add
            assets.push(_asset);
            assetIsUsed[_asset] = true;
        }

        emit NewEndorsedVault(_vault, _asset, _releaseTarget, _vaultType);
    }

    /**
     * @notice Tag a vault with a specific string.
     * @dev This is available to governance to tag any vault or strategy
     * on chain if desired to arbitrarily classify any vaults.
     *   i.e. Certain ratings ("A") / Vault status ("Shutdown") etc.
     *
     * @param _vault Address of the vault or strategy to tag.
     * @param _tag The string to tag the vault or strategy with.
     */
    function tagVault(
        address _vault,
        string memory _tag
    ) external virtual onlyTaggers {
        require(vaultInfo[_vault].asset != address(0), "!Endorsed");
        vaultInfo[_vault].tag = _tag;

        emit VaultTagged(_vault);
    }

    /**
     * @notice Remove a `_vault`.
     * @dev Can be used as an efficient way to remove a vault
     * to not have to iterate over the full array.
     *
     * NOTE: This will not remove the asset from the `assets` array
     * if it is no longer in use and will have to be done manually.
     *
     * @param _vault Address of the vault to remove.
     */
    function removeVault(address _vault) external virtual onlyEndorsers {
        // Get the struct with all the vaults data.
        Info memory info = vaultInfo[_vault];
        require(info.asset != address(0), "!endorsed");
        require(
            _endorsedVaults[info.asset][info.index] == _vault,
            "wrong vault"
        );

        // Get the vault at the end of the array
        address lastVault = _endorsedVaults[info.asset][
            _endorsedVaults[info.asset].length - 1
        ];

        // If `_vault` is not the last item in the array.
        if (lastVault != _vault) {
            // Set the last index to the spot we are removing.
            _endorsedVaults[info.asset][info.index] = lastVault;

            // Update the index of the vault we moved
            vaultInfo[lastVault].index = uint64(info.index);
        }

        // Pop the last item off the array.
        _endorsedVaults[info.asset].pop();

        // Emit the event.
        emit RemovedVault(
            _vault,
            info.asset,
            info.releaseVersion,
            info.vaultType
        );

        // Delete the struct.
        delete vaultInfo[_vault];
    }

    /**
     * @notice Removes a specific `_asset` at `_index` from `assets`.
     * @dev Can be used if an asset is no longer in use after a vault or
     * strategy has also been removed.
     *
     * @param _asset The asset to remove from the array.
     * @param _index The index it sits at.
     */
    function removeAsset(
        address _asset,
        uint256 _index
    ) external virtual onlyEndorsers {
        require(assetIsUsed[_asset], "!in use");
        require(_endorsedVaults[_asset].length == 0, "still in use");
        require(assets[_index] == _asset, "wrong asset");

        // Replace `_asset` with the last index.
        assets[_index] = assets[assets.length - 1];

        // Pop last item off the array.
        assets.pop();

        // No longer used.
        assetIsUsed[_asset] = false;
    }

    /**
     * @notice Set a new address to be able to endorse or remove an existing endorser.
     * @param _account The address to set.
     * @param _canEndorse Bool if the `_account` can or cannot endorse.
     */
    function setEndorser(
        address _account,
        bool _canEndorse
    ) external virtual onlyGovernance {
        endorsers[_account] = _canEndorse;

        emit UpdateEndorser(_account, _canEndorse);
    }

    /**
     * @notice Set a new address to be able to tag a vault.
     * @param _account The address to set.
     * @param _canTag Bool if the `_account` can or cannot tag.
     */
    function setTagger(
        address _account,
        bool _canTag
    ) external virtual onlyGovernance {
        taggers[_account] = _canTag;

        emit UpdateTagger(_account, _canTag);
    }

    /**
     * @notice Set a legacy registry if one exists.
     * @param _legacyRegistry The address of the legacy registry.
     */
    function setLegacyRegistry(
        address _legacyRegistry
    ) external virtual onlyGovernance {
        legacyRegistry = _legacyRegistry;
    }
}

// src/accountants/Accountant.sol

/// @title Accountant.
/// @dev Will charge fees, issue refunds, and run health check on any reported
///     gains or losses during a strategy's report.
contract Accountant {
    using SafeERC20 for ERC20;

    /// @notice An event emitted when a vault is added or removed.
    event VaultChanged(address indexed vault, ChangeType change);

    /// @notice An event emitted when the default fee configuration is updated.
    event UpdateDefaultFeeConfig(Fee defaultFeeConfig);

    /// @notice An event emitted when the future fee manager is set.
    event SetFutureFeeManager(address indexed futureFeeManager);

    /// @notice An event emitted when a new fee manager is accepted.
    event NewFeeManager(address indexed feeManager);

    /// @notice An event emitted when a new vault manager is set.
    event UpdateVaultManager(address indexed newVaultManager);

    /// @notice An event emitted when the fee recipient is updated.
    event UpdateFeeRecipient(
        address indexed oldFeeRecipient,
        address indexed newFeeRecipient
    );

    /// @notice An event emitted when a custom fee configuration is updated.
    event UpdateCustomFeeConfig(address indexed vault, Fee custom_config);

    /// @notice An event emitted when a custom fee configuration is removed.
    event RemovedCustomFeeConfig(address indexed vault);

    /// @notice An event emitted when the `maxLoss` parameter is updated.
    event UpdateMaxLoss(uint256 maxLoss);

    /// @notice An event emitted when rewards are distributed.
    event DistributeRewards(address indexed token, uint256 rewards);

    /// @notice Enum defining change types (added or removed).
    enum ChangeType {
        NULL,
        ADDED,
        REMOVED
    }

    /// @notice Struct representing fee details.
    struct Fee {
        uint16 managementFee; // Annual management fee to charge.
        uint16 performanceFee; // Performance fee to charge.
        uint16 refundRatio; // Refund ratio to give back on losses.
        uint16 maxFee; // Max fee allowed as a percent of gain.
        uint16 maxGain; // Max percent gain a strategy can report.
        uint16 maxLoss; // Max percent loss a strategy can report.
        bool custom; // Flag to set for custom configs.
    }

    modifier onlyFeeManager() {
        _checkFeeManager();
        _;
    }

    modifier onlyVaultOrFeeManager() {
        _checkVaultOrFeeManager();
        _;
    }

    modifier onlyFeeManagerOrRecipient() {
        _checkFeeManagerOrRecipient();
        _;
    }

    modifier onlyAddedVaults() {
        _checkVaultIsAdded();
        _;
    }

    function _checkFeeManager() internal view virtual {
        require(msg.sender == feeManager, "!fee manager");
    }

    function _checkVaultOrFeeManager() internal view virtual {
        require(
            msg.sender == feeManager || msg.sender == vaultManager,
            "!vault manager"
        );
    }

    function _checkFeeManagerOrRecipient() internal view virtual {
        require(
            msg.sender == feeRecipient || msg.sender == feeManager,
            "!recipient"
        );
    }

    function _checkVaultIsAdded() internal view virtual {
        require(vaults[msg.sender], "vault not added");
    }

    /// @notice Constant defining the maximum basis points.
    uint256 internal constant MAX_BPS = 10_000;

    /// @notice Constant defining the number of seconds in a year.
    uint256 internal constant SECS_PER_YEAR = 31_556_952;

    /// @notice Constant defining the management fee threshold.
    uint16 public constant MANAGEMENT_FEE_THRESHOLD = 200;

    /// @notice Constant defining the performance fee threshold.
    uint16 public constant PERFORMANCE_FEE_THRESHOLD = 5_000;

    /// @notice The amount of max loss to use when redeeming from vaults.
    uint256 public maxLoss;

    /// @notice The address of the fee manager.
    address public feeManager;

    /// @notice The address of the fee recipient.
    address public feeRecipient;

    /// @notice An address that can add or remove vaults.
    address public vaultManager;

    /// @notice The address of the future fee manager.
    address public futureFeeManager;

    /// @notice The default fee configuration.
    Fee public defaultConfig;

    /// @notice Mapping to track added vaults.
    mapping(address => bool) public vaults;

    /// @notice Mapping vault => custom Fee config if any.
    mapping(address => Fee) public customConfig;

    /// @notice Mapping vault => strategy => flag for one time healthcheck skips.
    mapping(address => mapping(address => bool)) skipHealthCheck;

    constructor(
        address _feeManager,
        address _feeRecipient,
        uint16 defaultManagement,
        uint16 defaultPerformance,
        uint16 defaultRefund,
        uint16 defaultMaxFee,
        uint16 defaultMaxGain,
        uint16 defaultMaxLoss
    ) {
        require(_feeManager != address(0), "ZERO ADDRESS");
        require(_feeRecipient != address(0), "ZERO ADDRESS");

        feeManager = _feeManager;
        feeRecipient = _feeRecipient;

        _updateDefaultConfig(
            defaultManagement,
            defaultPerformance,
            defaultRefund,
            defaultMaxFee,
            defaultMaxGain,
            defaultMaxLoss
        );
    }

    /**
     * @notice Called by a vault when a `strategy` is reporting.
     * @dev The msg.sender must have been added to the `vaults` mapping.
     * @param strategy Address of the strategy reporting.
     * @param gain Amount of the gain if any.
     * @param loss Amount of the loss if any.
     * @return totalFees if any to charge.
     * @return totalRefunds if any for the vault to pull.
     */
    function report(
        address strategy,
        uint256 gain,
        uint256 loss
    )
        public
        virtual
        onlyAddedVaults
        returns (uint256 totalFees, uint256 totalRefunds)
    {
        // Declare the config to use as the custom.
        Fee memory fee = customConfig[msg.sender];

        // Check if there is a custom config to use.
        if (!fee.custom) {
            // Otherwise use the default.
            fee = defaultConfig;
        }

        // Retrieve the strategy's params from the vault.
        IVault.StrategyParams memory strategyParams = IVault(msg.sender)
            .strategies(strategy);

        // Charge management fees no matter gain or loss.
        if (fee.managementFee > 0) {
            // Time since the last harvest.
            uint256 duration = block.timestamp - strategyParams.last_report;
            // managementFee is an annual amount, so charge based on the time passed.
            totalFees = ((strategyParams.current_debt *
                duration *
                (fee.managementFee)) /
                MAX_BPS /
                SECS_PER_YEAR);
        }

        // Only charge performance fees if there is a gain.
        if (gain > 0) {
            // If we are skipping the healthcheck this report
            if (skipHealthCheck[msg.sender][strategy]) {
                // Make sure it is reset for the next one.
                skipHealthCheck[msg.sender][strategy] = false;

                // Setting `maxGain` to 0 will disable the healthcheck on profits.
            } else if (fee.maxGain > 0) {
                require(
                    gain <=
                        (strategyParams.current_debt * (fee.maxGain)) / MAX_BPS,
                    "too much gain"
                );
            }

            totalFees += (gain * (fee.performanceFee)) / MAX_BPS;
        } else {
            // If we are skipping the healthcheck this report
            if (skipHealthCheck[msg.sender][strategy]) {
                // Make sure it is reset for the next one.
                skipHealthCheck[msg.sender][strategy] = false;

                // Setting `maxLoss` to 10_000 will disable the healthcheck on losses.
            } else if (fee.maxLoss < MAX_BPS) {
                require(
                    loss <=
                        (strategyParams.current_debt * (fee.maxLoss)) / MAX_BPS,
                    "too much loss"
                );
            }

            // Means we should have a loss.
            if (fee.refundRatio > 0) {
                // Cache the underlying asset the vault uses.
                address asset = IVault(msg.sender).asset();
                // Give back either all we have or based on the refund ratio.
                totalRefunds = Math.min(
                    (loss * (fee.refundRatio)) / MAX_BPS,
                    ERC20(asset).balanceOf(address(this))
                );

                if (totalRefunds > 0) {
                    // Approve the vault to pull the underlying asset.
                    _checkAllowance(msg.sender, asset, totalRefunds);
                }
            }
        }

        // 0 Max fee means it is not enforced.
        if (fee.maxFee > 0) {
            // Ensure fee does not exceed the maxFee %.
            totalFees = Math.min((gain * (fee.maxFee)) / MAX_BPS, totalFees);
        }

        return (totalFees, totalRefunds);
    }

    /**
     * @notice Function to add a new vault for this accountant to charge fees for.
     * @dev This is not used to set any of the fees for the specific vault or strategy. Each fee will be set separately.
     * @param vault The address of a vault to allow to use this accountant.
     */
    function addVault(address vault) external virtual onlyVaultOrFeeManager {
        // Ensure the vault has not already been added.
        require(!vaults[vault], "already added");

        vaults[vault] = true;

        emit VaultChanged(vault, ChangeType.ADDED);
    }

    /**
     * @notice Function to remove a vault from this accountant's fee charging list.
     * @param vault The address of the vault to be removed from this accountant.
     */
    function removeVault(address vault) external virtual onlyVaultOrFeeManager {
        // Ensure the vault has been previously added.
        require(vaults[vault], "not added");

        address asset = IVault(vault).asset();
        // Remove any allowances left.
        if (ERC20(asset).allowance(address(this), vault) != 0) {
            ERC20(asset).safeApprove(vault, 0);
        }

        vaults[vault] = false;

        emit VaultChanged(vault, ChangeType.REMOVED);
    }

    /**
     * @notice Function to update the default fee configuration used for
     *     all strategies that don't have a custom config set.
     * @param defaultManagement Default annual management fee to charge.
     * @param defaultPerformance Default performance fee to charge.
     * @param defaultRefund Default refund ratio to give back on losses.
     * @param defaultMaxFee Default max fee to allow as a percent of gain.
     * @param defaultMaxGain Default max percent gain a strategy can report.
     * @param defaultMaxLoss Default max percent loss a strategy can report.
     */
    function updateDefaultConfig(
        uint16 defaultManagement,
        uint16 defaultPerformance,
        uint16 defaultRefund,
        uint16 defaultMaxFee,
        uint16 defaultMaxGain,
        uint16 defaultMaxLoss
    ) external virtual onlyFeeManager {
        _updateDefaultConfig(
            defaultManagement,
            defaultPerformance,
            defaultRefund,
            defaultMaxFee,
            defaultMaxGain,
            defaultMaxLoss
        );
    }

    /**
     * @dev Updates the Accountant's default fee config.
     *   Is used during deployment and during any future updates.
     */
    function _updateDefaultConfig(
        uint16 defaultManagement,
        uint16 defaultPerformance,
        uint16 defaultRefund,
        uint16 defaultMaxFee,
        uint16 defaultMaxGain,
        uint16 defaultMaxLoss
    ) internal virtual {
        // Check for threshold and limit conditions.
        require(
            defaultManagement <= MANAGEMENT_FEE_THRESHOLD,
            "management fee threshold"
        );
        require(
            defaultPerformance <= PERFORMANCE_FEE_THRESHOLD,
            "performance fee threshold"
        );
        require(defaultMaxLoss <= MAX_BPS, "too high");

        // Update the default fee configuration.
        defaultConfig = Fee({
            managementFee: defaultManagement,
            performanceFee: defaultPerformance,
            refundRatio: defaultRefund,
            maxFee: defaultMaxFee,
            maxGain: defaultMaxGain,
            maxLoss: defaultMaxLoss,
            custom: false
        });

        emit UpdateDefaultFeeConfig(defaultConfig);
    }

    /**
     * @notice Function to set a custom fee configuration for a specific vault.
     * @param vault The vault the strategy is hooked up to.
     * @param customManagement Custom annual management fee to charge.
     * @param customPerformance Custom performance fee to charge.
     * @param customRefund Custom refund ratio to give back on losses.
     * @param customMaxFee Custom max fee to allow as a percent of gain.
     * @param customMaxGain Custom max percent gain a strategy can report.
     * @param customMaxLoss Custom max percent loss a strategy can report.
     */
    function setCustomConfig(
        address vault,
        uint16 customManagement,
        uint16 customPerformance,
        uint16 customRefund,
        uint16 customMaxFee,
        uint16 customMaxGain,
        uint16 customMaxLoss
    ) external virtual onlyFeeManager {
        // Ensure the vault has been added.
        require(vaults[vault], "vault not added");
        // Check for threshold and limit conditions.
        require(
            customManagement <= MANAGEMENT_FEE_THRESHOLD,
            "management fee threshold"
        );
        require(
            customPerformance <= PERFORMANCE_FEE_THRESHOLD,
            "performance fee threshold"
        );
        require(customMaxLoss <= MAX_BPS, "too high");

        // Create the vault's custom config.
        Fee memory _config = Fee({
            managementFee: customManagement,
            performanceFee: customPerformance,
            refundRatio: customRefund,
            maxFee: customMaxFee,
            maxGain: customMaxGain,
            maxLoss: customMaxLoss,
            custom: true
        });

        // Store the config.
        customConfig[vault] = _config;

        emit UpdateCustomFeeConfig(vault, _config);
    }

    /**
     * @notice Function to remove a previously set custom fee configuration for a vault.
     * @param vault The vault to remove custom setting for.
     */
    function removeCustomConfig(address vault) external virtual onlyFeeManager {
        // Ensure custom fees are set for the specified vault.
        require(customConfig[vault].custom, "No custom fees set");

        // Set all the vaults's custom fees to 0.
        delete customConfig[vault];

        // Emit relevant event.
        emit RemovedCustomFeeConfig(vault);
    }

    /**
     * @notice Turn off the health check for a specific `vault` `strategy` combo.
     * @dev This will only last for one report and get automatically turned back on.
     * @param vault Address of the vault.
     * @param strategy Address of the strategy.
     */
    function turnOffHealthCheck(
        address vault,
        address strategy
    ) external virtual onlyFeeManager {
        // Ensure the vault has been added.
        require(vaults[vault], "vault not added");

        skipHealthCheck[vault][strategy] = true;
    }

    /**
     * @notice Public getter to check for custom setting.
     * @dev We use uint256 for the flag since its cheaper so this
     *   will convert it to a bool for easy view functions.
     *
     * @param vault Address of the vault.
     * @return If a custom fee config is set.
     */
    function useCustomConfig(
        address vault
    ) external view virtual returns (bool) {
        return customConfig[vault].custom;
    }

    /**
     * @notice Get the full config used for a specific `vault`.
     * @param vault Address of the vault.
     * @return fee The config that would be used during the report.
     */
    function getVaultConfig(
        address vault
    ) external view returns (Fee memory fee) {
        fee = customConfig[vault];

        // Check if there is a custom config to use.
        if (!fee.custom) {
            // Otherwise use the default.
            fee = defaultConfig;
        }
    }

    /**
     * @notice Function to redeem the underlying asset from a vault.
     * @dev Will default to using the full balance of the vault.
     * @param vault The vault to redeem from.
     */
    function redeemUnderlying(address vault) external virtual {
        redeemUnderlying(vault, IVault(vault).balanceOf(address(this)));
    }

    /**
     * @notice Function to redeem the underlying asset from a vault.
     * @param vault The vault to redeem from.
     * @param amount The amount in vault shares to redeem.
     */
    function redeemUnderlying(
        address vault,
        uint256 amount
    ) public virtual onlyFeeManager {
        IVault(vault).redeem(amount, address(this), address(this), maxLoss);
    }

    /**
     * @notice Sets the `maxLoss` parameter to be used on redeems.
     * @param _maxLoss The amount in basis points to set as the maximum loss.
     */
    function setMaxLoss(uint256 _maxLoss) external virtual onlyFeeManager {
        // Ensure that the provided `maxLoss` does not exceed 100% (in basis points).
        require(_maxLoss <= MAX_BPS, "higher than 100%");

        maxLoss = _maxLoss;

        // Emit an event to signal the update of the `maxLoss` parameter.
        emit UpdateMaxLoss(_maxLoss);
    }

    /**
     * @notice Function to distribute all accumulated fees to the designated recipient.
     * @param token The token to distribute.
     */
    function distribute(address token) external virtual {
        distribute(token, ERC20(token).balanceOf(address(this)));
    }

    /**
     * @notice Function to distribute accumulated fees to the designated recipient.
     * @param token The token to distribute.
     * @param amount amount of token to distribute.
     */
    function distribute(
        address token,
        uint256 amount
    ) public virtual onlyFeeManagerOrRecipient {
        ERC20(token).safeTransfer(feeRecipient, amount);

        emit DistributeRewards(token, amount);
    }

    /**
     * @notice Function to set a future fee manager address.
     * @param _futureFeeManager The address to set as the future fee manager.
     */
    function setFutureFeeManager(
        address _futureFeeManager
    ) external virtual onlyFeeManager {
        // Ensure the futureFeeManager is not a zero address.
        require(_futureFeeManager != address(0), "ZERO ADDRESS");
        futureFeeManager = _futureFeeManager;

        emit SetFutureFeeManager(_futureFeeManager);
    }

    /**
     * @notice Function to accept the role change and become the new fee manager.
     * @dev This function allows the future fee manager to accept the role change and become the new fee manager.
     */
    function acceptFeeManager() external virtual {
        // Make sure the sender is the future fee manager.
        require(msg.sender == futureFeeManager, "not future fee manager");
        feeManager = futureFeeManager;
        futureFeeManager = address(0);

        emit NewFeeManager(msg.sender);
    }

    /**
     * @notice Function to set a new vault manager.
     * @param newVaultManager Address to add or remove vaults.
     */
    function setVaultManager(
        address newVaultManager
    ) external virtual onlyFeeManager {
        vaultManager = newVaultManager;

        emit UpdateVaultManager(newVaultManager);
    }

    /**
     * @notice Function to set a new address to receive distributed rewards.
     * @param newFeeRecipient Address to receive distributed fees.
     */
    function setFeeRecipient(
        address newFeeRecipient
    ) external virtual onlyFeeManager {
        // Ensure the newFeeRecipient is not a zero address.
        require(newFeeRecipient != address(0), "ZERO ADDRESS");
        address oldRecipient = feeRecipient;
        feeRecipient = newFeeRecipient;

        emit UpdateFeeRecipient(oldRecipient, newFeeRecipient);
    }

    /**
     * @dev Internal safe function to make sure the contract you want to
     * interact with has enough allowance to pull the desired tokens.
     *
     * @param _contract The address of the contract that will move the token.
     * @param _token The ERC-20 token that will be getting spent.
     * @param _amount The amount of `_token` to be spent.
     */
    function _checkAllowance(
        address _contract,
        address _token,
        uint256 _amount
    ) internal {
        if (ERC20(_token).allowance(address(this), _contract) < _amount) {
            ERC20(_token).safeApprove(_contract, 0);
            ERC20(_token).safeApprove(_contract, _amount);
        }
    }
}

// src/managers/RoleManager.sol

/// @title Yearn V3 Vault Role Manager.
contract RoleManager is Positions {
    /// @notice Revert message for when a vault has already been deployed.
    error AlreadyDeployed(address _vault);

    /// @notice Emitted when a new vault has been deployed or added.
    event AddedNewVault(
        address indexed vault,
        address indexed debtAllocator,
        uint256 category
    );

    /// @notice Emitted when a vaults debt allocator is updated.
    event UpdateDebtAllocator(
        address indexed vault,
        address indexed debtAllocator
    );

    /// @notice Emitted when a vault is removed.
    event RemovedVault(address indexed vault);

    /// @notice Emitted when the defaultProfitMaxUnlockTime variable is updated.
    event UpdateDefaultProfitMaxUnlockTime(
        uint256 newDefaultProfitMaxUnlockTime
    );

    /// @notice Config that holds all vault info.
    struct VaultConfig {
        address asset;
        uint256 category;
        address debtAllocator;
        uint256 index;
    }

    /*//////////////////////////////////////////////////////////////
                           POSITION ID'S
    //////////////////////////////////////////////////////////////*/

    /// @notice Position ID for "Pending Governance".
    bytes32 public constant PENDING_GOVERNANCE =
        keccak256("Pending Governance");
    /// @notice Position ID for "Governance".
    bytes32 public constant GOVERNANCE = keccak256("Governance");
    /// @notice Position ID for "Brain".
    bytes32 public constant MANAGEMENT = keccak256("Management");

    /// @notice Position ID for "Keeper".
    bytes32 public constant KEEPER = keccak256("Keeper");
    /// @notice Position ID for the "Registry".
    bytes32 public constant REGISTRY = keccak256("Registry");
    /// @notice Position ID for the "Accountant".
    bytes32 public constant ACCOUNTANT = keccak256("Accountant");
    /// @notice Position ID for the "Debt Allocator".
    bytes32 public constant DEBT_ALLOCATOR = keccak256("Debt Allocator");

    /*//////////////////////////////////////////////////////////////
                           STORAGE
    //////////////////////////////////////////////////////////////*/

    /// @notice Immutable address that the `role_manager` position
    // will be transferred to when a vault is removed.
    address public chad;

    /// @notice Array storing addresses of all managed vaults.
    address[] public vaults;

    // Encoded name so that it can be held as a constant.
    string internal projectName;

    /// @notice Default time until profits are fully unlocked for new vaults.
    uint256 public defaultProfitMaxUnlockTime;

    /// @notice Mapping of vault addresses to its config.
    mapping(address => VaultConfig) public vaultConfig;

    /// @notice Mapping of underlying asset, api version and category to vault.
    mapping(address => mapping(string => mapping(uint256 => address)))
        internal _assetToVault;

    constructor() {
        chad = address(1);
    }

    function initialize(
        string calldata _projectName,
        address _governance,
        address _management,
        address _keeper,
        address _registry,
        address _accountant,
        address _debtAllocator
    ) external {
        require(chad == address(0), "initialized");
        require(_governance != address(0), "ZERO ADDRESS");

        chad = _governance;
        projectName = _projectName;
        defaultProfitMaxUnlockTime = 7 days;

        // Governance gets all the roles.
        _setPositionHolder(GOVERNANCE, _governance);
        _setPositionRoles(GOVERNANCE, Roles.ALL);

        // Management reports, can update debt, queue, deposit limits and unlock time.
        _setPositionHolder(MANAGEMENT, _management);
        _setPositionRoles(
            MANAGEMENT,
            Roles.REPORTING_MANAGER |
                Roles.DEBT_MANAGER |
                Roles.QUEUE_MANAGER |
                Roles.DEPOSIT_LIMIT_MANAGER |
                Roles.DEBT_PURCHASER |
                Roles.PROFIT_UNLOCK_MANAGER
        );

        // The keeper can process reports.
        _setPositionHolder(KEEPER, _keeper);
        _setPositionRoles(KEEPER, Roles.REPORTING_MANAGER);

        // Debt allocators manage debt and also need to process reports.
        _setPositionHolder(DEBT_ALLOCATOR, _debtAllocator);
        _setPositionRoles(
            DEBT_ALLOCATOR,
            Roles.REPORTING_MANAGER | Roles.DEBT_MANAGER
        );

        _setPositionHolder(REGISTRY, _registry);
        _setPositionHolder(ACCOUNTANT, _accountant);
    }

    /*//////////////////////////////////////////////////////////////
                           VAULT CREATION
    //////////////////////////////////////////////////////////////*/

    /**
     * @notice Creates a new endorsed vault with default profit max unlock time.
     * @param _asset Address of the underlying asset.
     * @param _category Category of the vault.
     * @param _name Name of the vault.
     * @param _symbol Symbol of the vault.
     * @return _vault Address of the newly created vault.
     */
    function newVault(
        address _asset,
        uint256 _category,
        string calldata _name,
        string calldata _symbol
    ) external virtual onlyPositionHolder(GOVERNANCE) returns (address) {
        return _newVault(_asset, _category, _name, _symbol, type(uint256).max);
    }

    /**
     * @notice Creates a new endorsed vault with default profit max unlock time.
     * @param _asset Address of the underlying asset.
     * @param _category Category of the vault.
     * @param _name Name of the vault.
     * @param _symbol Symbol of the vault.
     * @param _depositLimit The deposit limit to start the vault with.
     * @return _vault Address of the newly created vault.
     */
    function newVault(
        address _asset,
        uint256 _category,
        string calldata _name,
        string calldata _symbol,
        uint256 _depositLimit
    ) external virtual onlyPositionHolder(GOVERNANCE) returns (address) {
        return _newVault(_asset, _category, _name, _symbol, _depositLimit);
    }

    /**
     * @notice Creates a new endorsed vault.
     * @param _asset Address of the underlying asset.
     * @param _category Category of the vault.
     * @param _name Name of the vault.
     * @param _symbol Symbol of the vault.
     * @param _depositLimit The deposit limit to start the vault with.
     * @return _vault Address of the newly created vault.
     */
    function _newVault(
        address _asset,
        uint256 _category,
        string memory _name,
        string memory _symbol,
        uint256 _depositLimit
    ) internal virtual returns (address _vault) {
        // Deploy through the registry so it is automatically endorsed.
        _vault = Registry(getPositionHolder(REGISTRY)).newEndorsedVault(
            _asset,
            _name,
            _symbol,
            address(this),
            defaultProfitMaxUnlockTime
        );

        // Check that a vault does not exist for that asset, api and category.
        // This reverts late to not waste gas when used correctly.
        string memory _apiVersion = IVault(_vault).apiVersion();
        if (_assetToVault[_asset][_apiVersion][_category] != address(0)) {
            revert AlreadyDeployed(
                _assetToVault[_asset][_apiVersion][_category]
            );
        }

        address _debtAllocator = getPositionHolder(DEBT_ALLOCATOR);
        // Give out roles on the new vault.
        _sanctify(_vault, _debtAllocator);

        // Set up the accountant.
        _setAccountant(_vault);

        if (_depositLimit != 0) {
            _setDepositLimit(_vault, _depositLimit);
        }

        // Add the vault config to the mapping.
        vaultConfig[_vault] = VaultConfig({
            asset: _asset,
            category: _category,
            debtAllocator: _debtAllocator,
            index: vaults.length
        });

        // Add the vault to the mapping.
        _assetToVault[_asset][_apiVersion][_category] = _vault;

        // Add the vault to the array.
        vaults.push(_vault);

        // Emit event for new vault.
        emit AddedNewVault(_vault, _debtAllocator, _category);
    }

    /**
     * @dev Assigns roles to the newly added vault.
     *
     * This will override any previously set roles for the holders. But not effect
     * the roles held by other addresses.
     *
     * @param _vault Address of the vault to sanctify.
     * @param _debtAllocator Address of the debt allocator for the vault.
     */
    function _sanctify(
        address _vault,
        address _debtAllocator
    ) internal virtual {
        // Set the roles for daddy.
        _setRole(_vault, _positions[GOVERNANCE]);

        // Set the roles for Management.
        _setRole(_vault, _positions[MANAGEMENT]);

        // Set the roles for the Keeper.
        _setRole(_vault, _positions[KEEPER]);

        // Give the specific debt allocator its roles.
        _setRole(
            _vault,
            Position(_debtAllocator, _positions[DEBT_ALLOCATOR].roles)
        );
    }

    /**
     * @dev Used internally to set the roles on a vault for a given position.
     *   Will not set the roles if the position holder is address(0).
     *   This does not check that the roles are !=0 because it is expected that
     *   the holder will be set to 0 if the position is not being used.
     *
     * @param _vault Address of the vault.
     * @param _position Holder address and roles to set.
     */
    function _setRole(
        address _vault,
        Position memory _position
    ) internal virtual {
        if (_position.holder != address(0)) {
            IVault(_vault).set_role(_position.holder, uint256(_position.roles));
        }
    }

    /**
     * @dev Sets the accountant on the vault and adds the vault to the accountant.
     *   This temporarily gives the `ACCOUNTANT_MANAGER` role to this contract.
     * @param _vault Address of the vault to set up the accountant for.
     */
    function _setAccountant(address _vault) internal virtual {
        // Get the current accountant.
        address accountant = getPositionHolder(ACCOUNTANT);

        // If there is an accountant set.
        if (accountant != address(0)) {
            // Temporarily give this contract the ability to set the accountant.
            IVault(_vault).add_role(address(this), Roles.ACCOUNTANT_MANAGER);

            // Set the account on the vault.
            IVault(_vault).set_accountant(accountant);

            // Take away the role.
            IVault(_vault).remove_role(address(this), Roles.ACCOUNTANT_MANAGER);

            // Whitelist the vault in the accountant.
            Accountant(accountant).addVault(_vault);
        }
    }

    /**
     * @dev Used to set an initial deposit limit when a new vault is deployed.
     *   Any further updates to the limit will need to be done by an address that
     *   holds the `DEPOSIT_LIMIT_MANAGER` role.
     * @param _vault Address of the newly deployed vault.
     * @param _depositLimit The deposit limit to set.
     */
    function _setDepositLimit(
        address _vault,
        uint256 _depositLimit
    ) internal virtual {
        // Temporarily give this contract the ability to set the deposit limit.
        IVault(_vault).add_role(address(this), Roles.DEPOSIT_LIMIT_MANAGER);

        // Set the initial deposit limit on the vault.
        IVault(_vault).set_deposit_limit(_depositLimit);

        // Take away the role.
        IVault(_vault).remove_role(address(this), Roles.DEPOSIT_LIMIT_MANAGER);
    }

    /*//////////////////////////////////////////////////////////////
                            VAULT MANAGEMENT
    //////////////////////////////////////////////////////////////*/

    /**
     * @notice Adds a new vault to the RoleManager with the specified category.
     * @dev If not already endorsed this function will endorse the vault.
     *  A new debt allocator will be deployed and configured.
     * @param _vault Address of the vault to be added.
     * @param _category Category associated with the vault.
     */
    function addNewVault(address _vault, uint256 _category) external virtual {
        addNewVault(_vault, _category, getPositionHolder(DEBT_ALLOCATOR));
    }

    /**
     * @notice Adds a new vault to the RoleManager with the specified category and debt allocator.
     * @dev If not already endorsed this function will endorse the vault.
     * @param _vault Address of the vault to be added.
     * @param _category Category associated with the vault.
     * @param _debtAllocator Address of the debt allocator for the vault.
     */
    function addNewVault(
        address _vault,
        uint256 _category,
        address _debtAllocator
    ) public virtual onlyPositionHolder(GOVERNANCE) {
        // Check that a vault does not exist for that asset, api and category.
        address _asset = IVault(_vault).asset();
        string memory _apiVersion = IVault(_vault).apiVersion();
        if (_assetToVault[_asset][_apiVersion][_category] != address(0)) {
            revert AlreadyDeployed(
                _assetToVault[_asset][_apiVersion][_category]
            );
        }

        // If not the current role manager.
        if (IVault(_vault).role_manager() != address(this)) {
            // Accept the position of role manager.
            IVault(_vault).accept_role_manager();
        }

        // Get the current registry.
        address registry = getPositionHolder(REGISTRY);

        // Check if the vault has been endorsed yet in the registry.
        if (!Registry(registry).isEndorsed(_vault)) {
            // If not endorse it.
            // NOTE: This will revert if adding a vault of an older version.
            Registry(registry).endorseMultiStrategyVault(_vault);
        }

        // Set the roles up.
        _sanctify(_vault, _debtAllocator);

        // Only set an accountant if there is not one set yet.
        if (IVault(_vault).accountant() == address(0)) {
            _setAccountant(_vault);
        }

        // Add the vault config to the mapping.
        vaultConfig[_vault] = VaultConfig({
            asset: _asset,
            category: _category,
            debtAllocator: _debtAllocator,
            index: vaults.length
        });

        // Add the vault to the mapping.
        _assetToVault[_asset][_apiVersion][_category] = _vault;

        // Add the vault to the array.
        vaults.push(_vault);

        // Emit event.
        emit AddedNewVault(_vault, _debtAllocator, _category);
    }

    /**
     * @notice Update a `_vault`s debt allocator.
     * @dev This will use the default Debt Allocator currently set.
     * @param _vault Address of the vault to update the allocator for.
     */
    function updateDebtAllocator(
        address _vault
    ) external virtual returns (address _newDebtAllocator) {
        _newDebtAllocator = getPositionHolder(DEBT_ALLOCATOR);
        updateDebtAllocator(_vault, _newDebtAllocator);
    }

    /**
     * @notice Update a `_vault`s debt allocator to a specified `_debtAllocator`.
     * @param _vault Address of the vault to update the allocator for.
     * @param _debtAllocator Address of the new debt allocator.
     */
    function updateDebtAllocator(
        address _vault,
        address _debtAllocator
    ) public virtual onlyPositionHolder(MANAGEMENT) {
        // Make sure the vault has been added to the role manager.
        require(vaultConfig[_vault].asset != address(0), "vault not added");

        // Remove the roles from the old allocator.
        _setRole(_vault, Position(vaultConfig[_vault].debtAllocator, 0));

        // Give the new debt allocator the relevant roles.
        _setRole(
            _vault,
            Position(_debtAllocator, _positions[DEBT_ALLOCATOR].roles)
        );

        // Update the vaults config.
        vaultConfig[_vault].debtAllocator = _debtAllocator;

        // Emit event.
        emit UpdateDebtAllocator(_vault, _debtAllocator);
    }

    /**
     * @notice Update a `_vault`s keeper to a specified `_keeper`.
     * @param _vault Address of the vault to update the keeper for.
     * @param _keeper Address of the new keeper.
     */
    function updateKeeper(
        address _vault,
        address _keeper
    ) external virtual onlyPositionHolder(MANAGEMENT) {
        // Make sure the vault has been added to the role manager.
        require(vaultConfig[_vault].asset != address(0), "vault not added");

        // Remove the roles from the old keeper if active.
        address defaultKeeper = getPositionHolder(KEEPER);
        if (
            _keeper != defaultKeeper && IVault(_vault).roles(defaultKeeper) != 0
        ) {
            _setRole(_vault, Position(defaultKeeper, 0));
        }

        // Give the new keeper the relevant roles.
        _setRole(_vault, Position(_keeper, _positions[KEEPER].roles));
    }

    function updateVaultName(
        address _vault,
        string calldata _name
    ) external onlyPositionHolder(GOVERNANCE) {
        require(vaultConfig[_vault].asset != address(0), "vault not added");
        IVault(_vault).setName(_name);
    }

    function updateVaultSymbol(
        address _vault,
        string calldata _symbol
    ) external onlyPositionHolder(GOVERNANCE) {
        require(vaultConfig[_vault].asset != address(0), "vault not added");
        IVault(_vault).setSymbol(_symbol);
    }

    /**
     * @notice Removes a vault from the RoleManager.
     * @dev This will NOT un-endorse the vault from the registry.
     * @param _vault Address of the vault to be removed.
     */
    function removeVault(
        address _vault
    ) external virtual onlyPositionHolder(MANAGEMENT) {
        // Get the vault specific config.
        VaultConfig memory config = vaultConfig[_vault];
        // Make sure the vault has been added to the role manager.
        require(config.asset != address(0), "vault not added");

        // Transfer the role manager position.
        IVault(_vault).transfer_role_manager(chad);

        // Address of the vault to replace it with.
        address vaultToMove = vaults[vaults.length - 1];

        // Move the last vault to the index of `_vault`
        vaults[config.index] = vaultToMove;
        vaultConfig[vaultToMove].index = config.index;

        // Remove the last item.
        vaults.pop();

        // Delete the vault from the mapping.
        delete _assetToVault[config.asset][IVault(_vault).apiVersion()][
            config.category
        ];

        // Delete the config for `_vault`.
        delete vaultConfig[_vault];

        emit RemovedVault(_vault);
    }

    /**
     * @notice Removes a specific role(s) for a `_holder` from the `_vaults`.
     * @dev Can be used to remove one specific role or multiple.
     * @param _vaults Array of vaults to adjust.
     * @param _holder Address who's having a role removed.
     * @param _role The role or roles to remove from the `_holder`.
     */
    function removeRoles(
        address[] calldata _vaults,
        address _holder,
        uint256 _role
    ) external virtual onlyPositionHolder(GOVERNANCE) {
        address _vault;
        for (uint256 i = 0; i < _vaults.length; ++i) {
            _vault = _vaults[i];
            // Make sure the vault is added to this Role Manager.
            require(vaultConfig[_vault].asset != address(0), "vault not added");

            // Remove the role.
            IVault(_vault).remove_role(_holder, _role);
        }
    }

    /*//////////////////////////////////////////////////////////////
                            SETTERS
    //////////////////////////////////////////////////////////////*/

    /**
     * @notice Setter function for updating a positions roles.
     * @param _position Identifier for the position.
     * @param _newRoles New roles for the position.
     */
    function setPositionRoles(
        bytes32 _position,
        uint256 _newRoles
    ) external virtual onlyPositionHolder(GOVERNANCE) {
        // Cannot change the debt allocator or keeper roles since holder can be updated.
        require(
            _position != DEBT_ALLOCATOR && _position != KEEPER,
            "cannot update"
        );
        _setPositionRoles(_position, _newRoles);
    }

    /**
     * @notice Setter function for updating a positions holder.
     * @dev Updating `Governance` requires setting `PENDING_GOVERNANCE`
     *  and then the pending address calling {acceptGovernance}.
     * @param _position Identifier for the position.
     * @param _newHolder New address for position.
     */
    function setPositionHolder(
        bytes32 _position,
        address _newHolder
    ) external virtual onlyPositionHolder(GOVERNANCE) {
        require(_position != GOVERNANCE, "!two step flow");
        _setPositionHolder(_position, _newHolder);
    }

    /**
     * @notice Sets the default time until profits are fully unlocked for new vaults.
     * @param _newDefaultProfitMaxUnlockTime New value for defaultProfitMaxUnlockTime.
     */
    function setDefaultProfitMaxUnlockTime(
        uint256 _newDefaultProfitMaxUnlockTime
    ) external virtual onlyPositionHolder(GOVERNANCE) {
        defaultProfitMaxUnlockTime = _newDefaultProfitMaxUnlockTime;

        emit UpdateDefaultProfitMaxUnlockTime(_newDefaultProfitMaxUnlockTime);
    }

    /**
     * @notice Accept the Governance role.
     * @dev Caller must be the Pending Governance.
     */
    function acceptGovernance()
        external
        virtual
        onlyPositionHolder(PENDING_GOVERNANCE)
    {
        // Set the Governance role to the caller.
        _setPositionHolder(GOVERNANCE, msg.sender);
        // Reset the Pending Governance.
        _setPositionHolder(PENDING_GOVERNANCE, address(0));
    }

    /*//////////////////////////////////////////////////////////////
                            VIEW METHODS
    //////////////////////////////////////////////////////////////*/

    /**
     * @notice Get the name of this contract.
     */
    function name() external view virtual returns (string memory) {
        return string(abi.encodePacked(projectName, " Role Manager"));
    }

    /**
     * @notice Get all vaults that this role manager controls..
     * @return The full array of vault addresses.
     */
    function getAllVaults() external view virtual returns (address[] memory) {
        return vaults;
    }

    /**
     * @notice Get the vault for a specific asset, api and category.
     * @dev This will return address(0) if one has not been added or deployed.
     *
     * @param _asset The underlying asset used.
     * @param _apiVersion The version of the vault.
     * @param _category The category of the vault.
     * @return The vault for the specified `_asset`, `_apiVersion` and `_category`.
     */
    function getVault(
        address _asset,
        string memory _apiVersion,
        uint256 _category
    ) external view virtual returns (address) {
        return _assetToVault[_asset][_apiVersion][_category];
    }

    /**
     * @notice Get the latest vault for a specific asset.
     * @dev This will default to using category 1.
     * @param _asset The underlying asset used.
     * @return _vault latest vault for the specified `_asset` if any.
     */
    function latestVault(
        address _asset
    ) external view virtual returns (address) {
        return latestVault(_asset, 1);
    }

    /**
     * @notice Get the latest vault for a specific asset.
     * @param _asset The underlying asset used.
     * @param _category The category of the vault.
     * @return _vault latest vault for the specified `_asset` if any.
     */
    function latestVault(
        address _asset,
        uint256 _category
    ) public view virtual returns (address _vault) {
        address releaseRegistry = Registry(getPositionHolder(REGISTRY))
            .releaseRegistry();
        uint256 numReleases = ReleaseRegistry(releaseRegistry).numReleases();

        for (uint256 i = numReleases; i > 0; --i) {
            string memory apiVersion = IVaultFactory_0(
                ReleaseRegistry(releaseRegistry).factories(i - 1)
            ).apiVersion();

            _vault = _assetToVault[_asset][apiVersion][_category];
            if (_vault != address(0)) {
                break;
            }
        }
    }

    /**
     * @notice Check if a vault is managed by this contract.
     * @dev This will check if the `asset` variable in the struct has been
     *   set for an easy external view check.
     *
     *   Does not check the vaults `role_manager` position since that can be set
     *   by anyone for a random vault.
     *
     * @param _vault Address of the vault to check.
     * @return . The vaults role manager status.
     */
    function isVaultsRoleManager(
        address _vault
    ) external view virtual returns (bool) {
        return vaultConfig[_vault].asset != address(0);
    }

    /**
     * @notice Get the debt allocator for a specific vault.
     * @dev Will return address(0) if the vault is not managed by this contract.
     * @param _vault Address of the vault.
     * @return . Address of the debt allocator if any.
     */
    function getDebtAllocator(
        address _vault
    ) external view virtual returns (address) {
        return vaultConfig[_vault].debtAllocator;
    }

    /**
     * @notice Get the category for a specific vault.
     * @dev Will return 0 if the vault is not managed by this contract.
     * @param _vault Address of the vault.
     * @return . The category of the vault if any.
     */
    function getCategory(
        address _vault
    ) external view virtual returns (uint256) {
        return vaultConfig[_vault].category;
    }

    /**
     * @notice Get the address assigned to the Governance position.
     * @return The address assigned to the Governance position.
     */
    function getGovernance() external view virtual returns (address) {
        return getPositionHolder(GOVERNANCE);
    }

    /**
     * @notice Get the address assigned to the Pending Governance position.
     * @return The address assigned to the Pending Governance position.
     */
    function getPendingGovernance() external view virtual returns (address) {
        return getPositionHolder(PENDING_GOVERNANCE);
    }

    /**
     * @notice Get the address assigned to the Management position.
     * @return The address assigned to the Management position.
     */
    function getManagement() external view virtual returns (address) {
        return getPositionHolder(MANAGEMENT);
    }

    /**
     * @notice Get the address assigned to the Keeper position.
     * @return The address assigned to the Keeper position.
     */
    function getKeeper() external view virtual returns (address) {
        return getPositionHolder(KEEPER);
    }

    /**
     * @notice Get the address assigned to the Registry.
     * @return The address assigned to the Registry.
     */
    function getRegistry() external view virtual returns (address) {
        return getPositionHolder(REGISTRY);
    }

    /**
     * @notice Get the address assigned to the accountant.
     * @return The address assigned to the accountant.
     */
    function getAccountant() external view virtual returns (address) {
        return getPositionHolder(ACCOUNTANT);
    }

    /**
     * @notice Get the address assigned to be the debt allocator if any.
     * @return The address assigned to be the debt allocator if any.
     */
    function getDebtAllocator() external view virtual returns (address) {
        return getPositionHolder(DEBT_ALLOCATOR);
    }

    /**
     * @notice Get the roles given to the Governance position.
     * @return The roles given to the Governance position.
     */
    function getGovernanceRoles() external view virtual returns (uint256) {
        return getPositionRoles(GOVERNANCE);
    }

    /**
     * @notice Get the roles given to the Management position.
     * @return The roles given to the Management position.
     */
    function getManagementRoles() external view virtual returns (uint256) {
        return getPositionRoles(MANAGEMENT);
    }

    /**
     * @notice Get the roles given to the Keeper position.
     * @return The roles given to the Keeper position.
     */
    function getKeeperRoles() external view virtual returns (uint256) {
        return getPositionRoles(KEEPER);
    }

    /**
     * @notice Get the roles given to the debt allocators.
     * @return The roles given to the debt allocators.
     */
    function getDebtAllocatorRoles() external view virtual returns (uint256) {
        return getPositionRoles(DEBT_ALLOCATOR);
    }
}

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"_vault","type":"address"}],"name":"AlreadyDeployed","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"vault","type":"address"},{"indexed":true,"internalType":"address","name":"debtAllocator","type":"address"},{"indexed":false,"internalType":"uint256","name":"category","type":"uint256"}],"name":"AddedNewVault","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"vault","type":"address"}],"name":"RemovedVault","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"vault","type":"address"},{"indexed":true,"internalType":"address","name":"debtAllocator","type":"address"}],"name":"UpdateDebtAllocator","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"newDefaultProfitMaxUnlockTime","type":"uint256"}],"name":"UpdateDefaultProfitMaxUnlockTime","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"position","type":"bytes32"},{"indexed":true,"internalType":"address","name":"newAddress","type":"address"}],"name":"UpdatePositionHolder","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"position","type":"bytes32"},{"indexed":false,"internalType":"uint256","name":"newRoles","type":"uint256"}],"name":"UpdatePositionRoles","type":"event"},{"inputs":[],"name":"ACCOUNTANT","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"DEBT_ALLOCATOR","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"GOVERNANCE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"KEEPER","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MANAGEMENT","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"PENDING_GOVERNANCE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"REGISTRY","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"acceptGovernance","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_vault","type":"address"},{"internalType":"uint256","name":"_category","type":"uint256"},{"internalType":"address","name":"_debtAllocator","type":"address"}],"name":"addNewVault","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_vault","type":"address"},{"internalType":"uint256","name":"_category","type":"uint256"}],"name":"addNewVault","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"chad","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"defaultProfitMaxUnlockTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getAccountant","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getAllVaults","outputs":[{"internalType":"address[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_vault","type":"address"}],"name":"getCategory","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_vault","type":"address"}],"name":"getDebtAllocator","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getDebtAllocator","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getDebtAllocatorRoles","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getGovernance","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getGovernanceRoles","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getKeeper","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getKeeperRoles","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getManagement","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getManagementRoles","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getPendingGovernance","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_positionId","type":"bytes32"}],"name":"getPosition","outputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_positionId","type":"bytes32"}],"name":"getPositionHolder","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_positionId","type":"bytes32"}],"name":"getPositionRoles","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getRegistry","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_asset","type":"address"},{"internalType":"string","name":"_apiVersion","type":"string"},{"internalType":"uint256","name":"_category","type":"uint256"}],"name":"getVault","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"_projectName","type":"string"},{"internalType":"address","name":"_governance","type":"address"},{"internalType":"address","name":"_management","type":"address"},{"internalType":"address","name":"_keeper","type":"address"},{"internalType":"address","name":"_registry","type":"address"},{"internalType":"address","name":"_accountant","type":"address"},{"internalType":"address","name":"_debtAllocator","type":"address"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_vault","type":"address"}],"name":"isVaultsRoleManager","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_asset","type":"address"},{"internalType":"uint256","name":"_category","type":"uint256"}],"name":"latestVault","outputs":[{"internalType":"address","name":"_vault","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_asset","type":"address"}],"name":"latestVault","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_asset","type":"address"},{"internalType":"uint256","name":"_category","type":"uint256"},{"internalType":"string","name":"_name","type":"string"},{"internalType":"string","name":"_symbol","type":"string"},{"internalType":"uint256","name":"_depositLimit","type":"uint256"}],"name":"newVault","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_asset","type":"address"},{"internalType":"uint256","name":"_category","type":"uint256"},{"internalType":"string","name":"_name","type":"string"},{"internalType":"string","name":"_symbol","type":"string"}],"name":"newVault","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"_vaults","type":"address[]"},{"internalType":"address","name":"_holder","type":"address"},{"internalType":"uint256","name":"_role","type":"uint256"}],"name":"removeRoles","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_vault","type":"address"}],"name":"removeVault","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_newDefaultProfitMaxUnlockTime","type":"uint256"}],"name":"setDefaultProfitMaxUnlockTime","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_position","type":"bytes32"},{"internalType":"address","name":"_newHolder","type":"address"}],"name":"setPositionHolder","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_position","type":"bytes32"},{"internalType":"uint256","name":"_newRoles","type":"uint256"}],"name":"setPositionRoles","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_vault","type":"address"},{"internalType":"address","name":"_debtAllocator","type":"address"}],"name":"updateDebtAllocator","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_vault","type":"address"}],"name":"updateDebtAllocator","outputs":[{"internalType":"address","name":"_newDebtAllocator","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_vault","type":"address"},{"internalType":"address","name":"_keeper","type":"address"}],"name":"updateKeeper","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_vault","type":"address"},{"internalType":"string","name":"_name","type":"string"}],"name":"updateVaultName","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_vault","type":"address"},{"internalType":"string","name":"_symbol","type":"string"}],"name":"updateVaultSymbol","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"vaultConfig","outputs":[{"internalType":"address","name":"asset","type":"address"},{"internalType":"uint256","name":"category","type":"uint256"},{"internalType":"address","name":"debtAllocator","type":"address"},{"internalType":"uint256","name":"index","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"vaults","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"}]