// File: @openzeppelin/contracts/access/AccessControl.sol



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

pragma solidity ^0.8.0;

import "./IAccessControl.sol";
import "../utils/Context.sol";
import "../utils/Strings.sol";
import "../utils/introspection/ERC165.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```solidity
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```solidity
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it. We recommend using {AccessControlDefaultAdminRules}
 * to enforce additional security measures for this role.
 */
abstract contract AccessControl is Context, IAccessControl, ERC165 {
    struct RoleData {
        mapping(address => bool) members;
        bytes32 adminRole;
    }

    mapping(bytes32 => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with a standardized message including the required role.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     *
     * _Available since v4.1._
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role);
        _;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view virtual override returns (bool) {
        return _roles[role].members[account];
    }

    /**
     * @dev Revert with a standard message if `_msgSender()` is missing `role`.
     * Overriding this function changes the behavior of the {onlyRole} modifier.
     *
     * Format of the revert message is described in {_checkRole}.
     *
     * _Available since v4.6._
     */
    function _checkRole(bytes32 role) internal view virtual {
        _checkRole(role, _msgSender());
    }

    /**
     * @dev Revert with a standard message if `account` is missing `role`.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!hasRole(role, account)) {
            revert(
                string(
                    abi.encodePacked(
                        "AccessControl: account ",
                        Strings.toHexString(account),
                        " is missing role ",
                        Strings.toHexString(uint256(role), 32)
                    )
                )
            );
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleGranted} event.
     */
    function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleRevoked} event.
     */
    function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     *
     * May emit a {RoleRevoked} event.
     */
    function renounceRole(bytes32 role, address account) public virtual override {
        require(account == _msgSender(), "AccessControl: can only renounce roles for self");

        _revokeRole(role, account);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event. Note that unlike {grantRole}, this function doesn't perform any
     * checks on the calling account.
     *
     * May emit a {RoleGranted} event.
     *
     * [WARNING]
     * ====
     * This function should only be called from the constructor when setting
     * up the initial roles for the system.
     *
     * Using this function in any other way is effectively circumventing the admin
     * system imposed by {AccessControl}.
     * ====
     *
     * NOTE: This function is deprecated in favor of {_grantRole}.
     */
    function _setupRole(bytes32 role, address account) internal virtual {
        _grantRole(role, account);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = getRoleAdmin(role);
        _roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleGranted} event.
     */
    function _grantRole(bytes32 role, address account) internal virtual {
        if (!hasRole(role, account)) {
            _roles[role].members[account] = true;
            emit RoleGranted(role, account, _msgSender());
        }
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleRevoked} event.
     */
    function _revokeRole(bytes32 role, address account) internal virtual {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }
}

// File: @openzeppelin/contracts/access/IAccessControl.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)

pragma solidity ^0.8.0;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     *
     * _Available since v3.1._
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {AccessControl-_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) external;
}

// File: @openzeppelin/contracts/utils/Context.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

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

// File: @openzeppelin/contracts/utils/introspection/ERC165.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// File: @openzeppelin/contracts/utils/introspection/IERC165.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// File: @openzeppelin/contracts/utils/math/Math.sol



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

pragma solidity ^0.8.0;

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

// File: @openzeppelin/contracts/utils/math/SignedMath.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SignedMath.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard signed math utilities missing in the Solidity language.
 */
library SignedMath {
    /**
     * @dev Returns the largest of two signed numbers.
     */
    function max(int256 a, int256 b) internal pure returns (int256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two signed numbers.
     */
    function min(int256 a, int256 b) internal pure returns (int256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two signed numbers without overflow.
     * The result is rounded towards zero.
     */
    function average(int256 a, int256 b) internal pure returns (int256) {
        // Formula from the book "Hacker's Delight"
        int256 x = (a & b) + ((a ^ b) >> 1);
        return x + (int256(uint256(x) >> 255) & (a ^ b));
    }

    /**
     * @dev Returns the absolute unsigned value of a signed value.
     */
    function abs(int256 n) internal pure returns (uint256) {
        unchecked {
            // must be unchecked in order to support `n = type(int256).min`
            return uint256(n >= 0 ? n : -n);
        }
    }
}

// File: @openzeppelin/contracts/utils/Strings.sol



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

pragma solidity ^0.8.0;

import "./math/Math.sol";
import "./math/SignedMath.sol";

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `int256` to its ASCII `string` decimal representation.
     */
    function toString(int256 value) internal pure returns (string memory) {
        return string(abi.encodePacked(value < 0 ? "-" : "", toString(SignedMath.abs(value))));
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, Math.log256(value) + 1);
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }

    /**
     * @dev Returns true if the two strings are equal.
     */
    function equal(string memory a, string memory b) internal pure returns (bool) {
        return keccak256(bytes(a)) == keccak256(bytes(b));
    }
}

// File: contracts/Constants.sol



// (c) 2023 Primex.finance
// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.18;

// admin roles
bytes32 constant BIG_TIMELOCK_ADMIN = 0x00; // It's primary admin.
bytes32 constant MEDIUM_TIMELOCK_ADMIN = keccak256("MEDIUM_TIMELOCK_ADMIN");
bytes32 constant SMALL_TIMELOCK_ADMIN = keccak256("SMALL_TIMELOCK_ADMIN");
bytes32 constant EMERGENCY_ADMIN = keccak256("EMERGENCY_ADMIN");
bytes32 constant GUARDIAN_ADMIN = keccak256("GUARDIAN_ADMIN");
bytes32 constant NFT_MINTER = keccak256("NFT_MINTER");
bytes32 constant TRUSTED_TOLERABLE_LIMIT_ROLE = keccak256("TRUSTED_TOLERABLE_LIMIT_ROLE");

// inter-contract interactions roles
bytes32 constant NO_FEE_ROLE = keccak256("NO_FEE_ROLE");
bytes32 constant VAULT_ACCESS_ROLE = keccak256("VAULT_ACCESS_ROLE");
bytes32 constant PM_ROLE = keccak256("PM_ROLE");
bytes32 constant LOM_ROLE = keccak256("LOM_ROLE");
bytes32 constant BATCH_MANAGER_ROLE = keccak256("BATCH_MANAGER_ROLE");

// token constants
address constant NATIVE_CURRENCY = address(uint160(bytes20(keccak256("NATIVE_CURRENCY"))));
address constant USD = 0x0000000000000000000000000000000000000348;
uint256 constant USD_MULTIPLIER = 10 ** (18 - 8); // usd decimals in chainlink is 8
uint8 constant MAX_ASSET_DECIMALS = 18;

// time constants
uint256 constant SECONDS_PER_YEAR = 365 days;
uint256 constant SECONDS_PER_DAY = 1 days;
uint256 constant HOUR = 1 hours;
uint256 constant TEN_WAD = 10 ether;

// File: contracts/interfaces/IPrimexRegistry.sol



// (c) 2023 Primex.finance
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.18;

interface IPrimexRegistry {
    /**
     * @notice A mapping that stores whether a role is designated for contracts only.
     * @param role The bytes32 identifier of the role.
     * @return True if the role is designated for contracts only
     */
    function isRoleForContractsOnly(bytes32 role) external view returns (bool);

    function setRoleAdmin(bytes32 role, bytes32 adminRole) external;

    /**
     * @notice Sets roles to be restricted for contracts only.
     * @dev Only callable by the BIG_TIMELOCK_ADMIN role.
     * @param roles An array of bytes32 role identifiers to be restricted for contracts only.
     */
    function setRolesForContractsOnly(bytes32[] calldata roles) external;

    /**
     * @notice Removes roles to be restricted for contracts only.
     * @dev Only callable by the BIG_TIMELOCK_ADMIN role.
     * @param roles An array of bytes32 role identifiers to be removed.
     */
    function removeRolesForContractsOnly(bytes32[] calldata roles) external;

    function grantRole(bytes32 role, address account) external;
}

// File: contracts/libraries/Errors.sol



// (c) 2023 Primex.finance
// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.18;

// solhint-disable-next-line func-visibility
function _require(bool condition, bytes4 selector) pure {
    if (!condition) _revert(selector);
}

// solhint-disable-next-line func-visibility
function _revert(bytes4 selector) pure {
    // solhint-disable-next-line no-inline-assembly
    assembly ("memory-safe") {
        let free_mem_ptr := mload(64)
        mstore(free_mem_ptr, selector)
        revert(free_mem_ptr, 4)
    }
}

library Errors {
    event Log(bytes4 error);

    //common
    error ADDRESS_NOT_SUPPORTED();
    error FORBIDDEN();
    error AMOUNT_IS_0();
    error CALLER_IS_NOT_TRADER();
    error CONDITION_INDEX_IS_OUT_OF_BOUNDS();
    error INVALID_PERCENT_NUMBER();
    error INVALID_SECURITY_BUFFER();
    error INVALID_MAINTENANCE_BUFFER();
    error TOKEN_ADDRESS_IS_ZERO();
    error IDENTICAL_TOKEN_ADDRESSES();
    error ASSET_DECIMALS_EXCEEDS_MAX_VALUE();
    error CAN_NOT_ADD_WITH_ZERO_ADDRESS();
    error SHOULD_BE_DIFFERENT_ASSETS_IN_SPOT();
    error TOKEN_NOT_SUPPORTED();
    error INSUFFICIENT_DEPOSIT();
    error SHOULD_NOT_HAVE_DUPLICATES();
    // error LIMIT_PRICE_IS_ZERO();
    error BUCKET_IS_NOT_ACTIVE();
    error DIFFERENT_DATA_LENGTH();
    error RECIPIENT_OR_SENDER_MUST_BE_ON_WHITE_LIST();
    error SLIPPAGE_TOLERANCE_EXCEEDED();
    error OPERATION_NOT_SUPPORTED();
    error SENDER_IS_BLACKLISTED();
    error NATIVE_CURRENCY_CANNOT_BE_ASSET();
    error DISABLED_TRANSFER_NATIVE_CURRENCY();
    error INVALID_AMOUNT();

    // bonus executor
    error CALLER_IS_NOT_NFT();
    error BONUS_FOR_BUCKET_ALREADY_ACTIVATED();
    error WRONG_LENGTH();
    error BONUS_DOES_NOT_EXIST();
    error CALLER_IS_NOT_DEBT_TOKEN();
    error CALLER_IS_NOT_P_TOKEN();
    error MAX_BONUS_COUNT_EXCEEDED();
    error TIER_IS_NOT_ACTIVE();
    error BONUS_PERCENT_IS_ZERO();

    // bucket
    error INCORRECT_LIQUIDITY_MINING_PARAMS();
    error PAIR_PRICE_DROP_IS_NOT_CORRECT();
    error ASSET_IS_NOT_SUPPORTED();
    error BUCKET_OUTSIDE_PRIMEX_PROTOCOL();
    error DEADLINE_IS_PASSED();
    error DEADLINE_IS_NOT_PASSED();
    error BUCKET_IS_NOT_LAUNCHED();
    error BURN_AMOUNT_EXCEEDS_PROTOCOL_DEBT();
    error LIQUIDITY_INDEX_OVERFLOW();
    error BORROW_INDEX_OVERFLOW();
    error BAR_OVERFLOW();
    error LAR_OVERFLOW();
    error UR_IS_MORE_THAN_1();
    error ASSET_ALREADY_SUPPORTED();
    error DEPOSIT_IS_MORE_AMOUNT_PER_USER();
    error DEPOSIT_EXCEEDS_MAX_TOTAL_DEPOSIT();
    error MINING_AMOUNT_WITHDRAW_IS_LOCKED_ON_STABILIZATION_PERIOD();
    error WITHDRAW_RATE_IS_MORE_10_PERCENT();
    error INVALID_FEE_BUFFER();
    error RESERVE_RATE_SHOULD_BE_LESS_THAN_1();
    error MAX_TOTAL_DEPOSIT_IS_ZERO();
    error AMOUNT_SCALED_SHOULD_BE_GREATER_THAN_ZERO();
    error NOT_ENOUGH_LIQUIDITY_IN_THE_BUCKET();

    // p/debt token, PMXToken
    error BUCKET_IS_IMMUTABLE();
    error INVALID_MINT_AMOUNT();
    error INVALID_BURN_AMOUNT();
    error TRANSFER_NOT_SUPPORTED();
    error APPROVE_NOT_SUPPORTED();
    error CALLER_IS_NOT_BUCKET();
    error CALLER_IS_NOT_A_BUCKET_FACTORY();
    error CALLER_IS_NOT_P_TOKEN_RECEIVER();
    error DURATION_MUST_BE_MORE_THAN_0();
    error INCORRECT_ID();
    error THERE_ARE_NO_LOCK_DEPOSITS();
    error LOCK_TIME_IS_NOT_EXPIRED();
    error TRANSFER_AMOUNT_EXCEED_ALLOWANCE();
    error CALLER_IS_NOT_A_MINTER();
    error ACTION_ONLY_WITH_AVAILABLE_BALANCE();
    error FEE_DECREASER_CALL_FAILED();
    error TRADER_REWARD_DISTRIBUTOR_CALL_FAILED();
    error INTEREST_INCREASER_CALL_FAILED();
    error LENDER_REWARD_DISTRIBUTOR_CALL_FAILED();
    error DEPOSIT_DOES_NOT_EXIST();
    error RECIPIENT_IS_BLACKLISTED();

    //LOM
    error ORDER_CAN_NOT_BE_FILLED();
    error ORDER_DOES_NOT_EXIST();
    error ORDER_IS_NOT_SPOT();
    error LEVERAGE_MUST_BE_MORE_THAN_1();
    error CANNOT_CHANGE_SPOT_ORDER_TO_MARGIN();
    error SHOULD_HAVE_OPEN_CONDITIONS();
    error INCORRECT_LEVERAGE();
    error INCORRECT_DEADLINE();
    error LEVERAGE_SHOULD_BE_1();
    error LEVERAGE_EXCEEDS_MAX_LEVERAGE();
    error SHOULD_OPEN_POSITION();
    error IS_SPOT_ORDER();
    error SHOULD_NOT_HAVE_CLOSE_CONDITIONS();
    error ORDER_HAS_EXPIRED();

    // LiquidityMiningRewardDistributor
    error BUCKET_IS_NOT_STABLE();
    error ATTEMPT_TO_WITHDRAW_MORE_THAN_DEPOSITED();
    error WITHDRAW_PMX_BY_ADMIN_FORBIDDEN();

    // nft
    error TOKEN_IS_BLOCKED();
    error ONLY_MINTERS();
    error PROGRAM_IS_NOT_ACTIVE();
    error CALLER_IS_NOT_OWNER();
    error TOKEN_IS_ALREADY_ACTIVATED();
    error WRONG_NETWORK();
    error ID_DOES_NOT_EXIST();
    error WRONG_URIS_LENGTH();

    // PM
    error ASSET_ADDRESS_NOT_SUPPORTED();
    error IDENTICAL_ASSET_ADDRESSES();
    error POSITION_DOES_NOT_EXIST();
    error AMOUNT_IS_MORE_THAN_POSITION_AMOUNT();
    error BORROWED_AMOUNT_IS_ZERO();
    error IS_SPOT_POSITION();
    error AMOUNT_IS_MORE_THAN_DEPOSIT();
    error DECREASE_AMOUNT_IS_ZERO();
    error INSUFFICIENT_DEPOSIT_SIZE();
    error IS_NOT_RISKY_OR_CANNOT_BE_CLOSED();
    error BUCKET_SHOULD_BE_UNDEFINED();
    error DEPOSIT_IN_THIRD_ASSET_ROUTES_LENGTH_SHOULD_BE_0();
    error POSITION_CANNOT_BE_CLOSED_FOR_THIS_REASON();
    error ADDRESS_IS_ZERO();
    error WRONG_TRUSTED_MULTIPLIER();
    error POSITION_SIZE_EXCEEDED();
    error POSITION_BUCKET_IS_INCORRECT();
    error THERE_MUST_BE_AT_LEAST_ONE_POSITION();
    error NOTHING_TO_CLOSE();

    // BatchManager
    error PARAMS_LENGTH_MISMATCH();
    error BATCH_CANNOT_BE_CLOSED_FOR_THIS_REASON();
    error CLOSE_CONDITION_IS_NOT_CORRECT();
    error SOLD_ASSET_IS_INCORRECT();

    // Price Oracle
    error ZERO_EXCHANGE_RATE();
    error NO_PRICEFEED_FOUND();
    error NO_PRICE_DROP_FEED_FOUND();

    //DNS
    error INCORRECT_FEE_RATE();
    error INCORRECT_RESTRICTIONS();
    error BUCKET_ALREADY_FROZEN();
    error BUCKET_IS_ALREADY_ADDED();
    error DEX_IS_ALREADY_ACTIVATED();
    error DEX_IS_ALREADY_FROZEN();
    error DEX_IS_ALREADY_ADDED();
    error BUCKET_NOT_ADDED();
    error DEX_NOT_ACTIVE();
    error BUCKET_ALREADY_ACTIVATED();
    error DEX_NOT_ADDED();
    error BUCKET_IS_INACTIVE();
    error WITHDRAWAL_NOT_ALLOWED();
    error BUCKET_IS_ALREADY_DEPRECATED();

    // Primex upkeep
    error NUMBER_IS_0();

    //referral program, WhiteBlackList
    error CALLER_ALREADY_REGISTERED();
    error MISMATCH();
    error PARENT_NOT_WHITELISTED();
    error ADDRESS_ALREADY_WHITELISTED();
    error ADDRESS_ALREADY_BLACKLISTED();
    error ADDRESS_NOT_BLACKLISTED();
    error ADDRESS_NOT_WHITELISTED();
    error ADDRESS_NOT_UNLISTED();
    error ADDRESS_IS_WHITELISTED();
    error ADDRESS_IS_NOT_CONTRACT();

    //Reserve
    error BURN_AMOUNT_IS_ZERO();
    error CALLER_IS_NOT_EXECUTOR();
    error ADDRESS_NOT_PRIMEX_BUCKET();
    error NOT_SUFFICIENT_RESERVE_BALANCE();
    error INCORRECT_TRANSFER_RESTRICTIONS();

    //Vault
    error AMOUNT_EXCEEDS_AVAILABLE_BALANCE();
    error INSUFFICIENT_FREE_ASSETS();
    error CALLER_IS_NOT_SPENDER();

    //Pricing Library
    error IDENTICAL_ASSETS();
    error SUM_OF_SHARES_SHOULD_BE_GREATER_THAN_ZERO();
    error DIFFERENT_PRICE_DEX_AND_ORACLE();
    error TAKE_PROFIT_IS_LTE_LIMIT_PRICE();
    error STOP_LOSS_IS_GTE_LIMIT_PRICE();
    error STOP_LOSS_IS_LTE_LIQUIDATION_PRICE();
    error INSUFFICIENT_POSITION_SIZE();
    error INCORRECT_PATH();
    error DEPOSITED_TO_BORROWED_ROUTES_LENGTH_SHOULD_BE_0();
    error INCORRECT_CM_TYPE();
    error FEE_RATE_IN_NATIVE_IS_ZERO();

    // Token transfers
    error TOKEN_TRANSFER_IN_FAILED();
    error TOKEN_TRANSFER_IN_OVERFLOW();
    error TOKEN_TRANSFER_OUT_FAILED();
    error NATIVE_TOKEN_TRANSFER_FAILED();

    // Conditional Managers
    error LOW_PRICE_ROUND_IS_LESS_HIGH_PRICE_ROUND();
    error TRAILING_DELTA_IS_INCORRECT();
    error DATA_FOR_ROUND_DOES_NOT_EXIST();
    error HIGH_PRICE_TIMESTAMP_IS_INCORRECT();
    error NO_PRICE_FEED_INTERSECTION();
    error SHOULD_BE_CCM();
    error SHOULD_BE_COM();

    //Lens
    error DEPOSITED_AMOUNT_IS_0();
    error SPOT_DEPOSITED_ASSET_SHOULD_BE_EQUAL_BORROWED_ASSET();
    error ZERO_ASSET_ADDRESS();
    error ASSETS_SHOULD_BE_DIFFERENT();
    error ZERO_SHARES();
    error SHARES_AMOUNT_IS_GREATER_THAN_AMOUNT_TO_SELL();
    error NO_ACTIVE_DEXES();

    //Bots
    error WRONG_BALANCES();
    error INVALID_INDEX();
    error INVALID_DIVIDER();
    error ARRAYS_LENGTHS_IS_NOT_EQUAL();
    error DENOMINATOR_IS_0();

    //DexAdapter
    error ZERO_AMOUNT_IN();
    error ZERO_AMOUNT();
    error UNKNOWN_DEX_TYPE();
    error REVERTED_WITHOUT_A_STRING_TRY_TO_CHECK_THE_ANCILLARY_DATA();
    error DELTA_OF_TOKEN_OUT_HAS_POSITIVE_VALUE();
    error DELTA_OF_TOKEN_IN_HAS_NEGATIVE_VALUE();
    error QUOTER_IS_NOT_PROVIDED();
    error DEX_ROUTER_NOT_SUPPORTED();
    error QUOTER_NOT_SUPPORTED();
    error SWAP_DEADLINE_PASSED();

    //SpotTradingRewardDistributor
    error PERIOD_DURATION_IS_ZERO();
    error REWARD_AMOUNT_IS_ZERO();
    error REWARD_PER_PERIOD_IS_NOT_CORRECT();

    //ActivityRewardDistributor
    error TOTAL_REWARD_AMOUNT_IS_ZERO();
    error REWARD_PER_DAY_IS_NOT_CORRECT();
    error ZERO_BUCKET_ADDRESS();
    //KeeperRewardDistributor
    error INCORRECT_PART_IN_REWARD();
    error INCORRECT_MULTIPLIER();

    //Treasury
    error TRANSFER_RESTRICTIONS_NOT_MET();
    error INSUFFICIENT_NATIVE_TOKEN_BALANCE();
    error INSUFFICIENT_TOKEN_BALANCE();
    error EXCEEDED_MAX_AMOUNT_DURING_TIMEFRAME();
    error EXCEEDED_MAX_SPENDING_LIMITS();
    error SPENDING_LIMITS_ARE_INCORRECT();
    error SPENDER_IS_NOT_EXIST();
}

// File: contracts/PrimexRegistry.sol



// (c) 2023 Primex.finance
// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.18;

import {AccessControl} from "@openzeppelin/contracts/access/AccessControl.sol";

import "./libraries/Errors.sol";

import {BIG_TIMELOCK_ADMIN, MEDIUM_TIMELOCK_ADMIN, SMALL_TIMELOCK_ADMIN, EMERGENCY_ADMIN} from "./Constants.sol";
import {IPrimexRegistry} from "./interfaces/IPrimexRegistry.sol";

contract PrimexRegistry is IPrimexRegistry, AccessControl {
    constructor() {
        _grantRole(BIG_TIMELOCK_ADMIN, msg.sender);
        // MEDIUM_TIMELOCK_ADMIN is admin for SMALL_TIMELOCK_ADMIN
        _setRoleAdmin(SMALL_TIMELOCK_ADMIN, MEDIUM_TIMELOCK_ADMIN);
        // SMALL_TIMELOCK_ADMIN is admin for EMERGENCY_ADMIN
        _setRoleAdmin(EMERGENCY_ADMIN, SMALL_TIMELOCK_ADMIN);
        // BIG_TIMELOCK_ADMIN is admin for other roles
    }

    /**
     * @inheritdoc IPrimexRegistry
     */
    mapping(bytes32 => bool) public override isRoleForContractsOnly;

    function setRoleAdmin(bytes32 role, bytes32 adminRole) external override onlyRole(BIG_TIMELOCK_ADMIN) {
        _setRoleAdmin(role, adminRole);
    }

    /**
     * @inheritdoc IPrimexRegistry
     */
    function setRolesForContractsOnly(bytes32[] calldata roles) external override onlyRole(BIG_TIMELOCK_ADMIN) {
        for (uint256 i; i < roles.length; i++) {
            isRoleForContractsOnly[roles[i]] = true;
        }
    }

    /**
     * @inheritdoc IPrimexRegistry
     */
    function removeRolesForContractsOnly(bytes32[] calldata roles) external override onlyRole(BIG_TIMELOCK_ADMIN) {
        for (uint256 i; i < roles.length; i++) {
            isRoleForContractsOnly[roles[i]] = false;
        }
    }

    function grantRole(bytes32 role, address account) public override(AccessControl, IPrimexRegistry) {
        if (isRoleForContractsOnly[role]) {
            _require(account.code.length > 0, Errors.ADDRESS_IS_NOT_CONTRACT.selector);
        }
        super.grantRole(role, account);
    }
}