MarketMakingVault

{{
  "language": "Solidity",
  "sources": {
    "@openzeppelin/contracts/access/Ownable.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

pragma solidity ^0.8.20;

import {Context} from "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * The initial owner is set to the address provided by the deployer. This can
 * later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}
"
    },
    "@openzeppelin/contracts/interfaces/IERC1363.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC1363.sol)

pragma solidity >=0.6.2;

import {IERC20} from "./IERC20.sol";
import {IERC165} from "./IERC165.sol";

/**
 * @title IERC1363
 * @dev Interface of the ERC-1363 standard as defined in the https://eips.ethereum.org/EIPS/eip-1363[ERC-1363].
 *
 * Defines an extension interface for ERC-20 tokens that supports executing code on a recipient contract
 * after `transfer` or `transferFrom`, or code on a spender contract after `approve`, in a single transaction.
 */
interface IERC1363 is IERC20, IERC165 {
    /*
     * Note: the ERC-165 identifier for this interface is 0xb0202a11.
     * 0xb0202a11 ===
     *   bytes4(keccak256('transferAndCall(address,uint256)')) ^
     *   bytes4(keccak256('transferAndCall(address,uint256,bytes)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256,bytes)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256,bytes)'))
     */

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @param data Additional data with no specified format, sent in call to `spender`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value, bytes calldata data) external returns (bool);
}
"
    },
    "@openzeppelin/contracts/interfaces/IERC165.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC165.sol)

pragma solidity >=0.4.16;

import {IERC165} from "../utils/introspection/IERC165.sol";
"
    },
    "@openzeppelin/contracts/interfaces/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC20.sol)

pragma solidity >=0.4.16;

import {IERC20} from "../token/ERC20/IERC20.sol";
"
    },
    "@openzeppelin/contracts/token/ERC20/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (token/ERC20/IERC20.sol)

pragma solidity >=0.4.16;

/**
 * @dev Interface of the ERC-20 standard as defined in the ERC.
 */
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 value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the value of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves a `value` amount of 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 value) 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 a `value` amount of tokens 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 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` 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 value) external returns (bool);
}
"
    },
    "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";
import {IERC1363} from "../../../interfaces/IERC1363.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC-20 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 {
    /**
     * @dev An operation with an ERC-20 token failed.
     */
    error SafeERC20FailedOperation(address token);

    /**
     * @dev Indicates a failed `decreaseAllowance` request.
     */
    error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);

    /**
     * @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.encodeCall(token.transfer, (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.encodeCall(token.transferFrom, (from, to, value)));
    }

    /**
     * @dev Variant of {safeTransfer} that returns a bool instead of reverting if the operation is not successful.
     */
    function trySafeTransfer(IERC20 token, address to, uint256 value) internal returns (bool) {
        return _callOptionalReturnBool(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Variant of {safeTransferFrom} that returns a bool instead of reverting if the operation is not successful.
     */
    function trySafeTransferFrom(IERC20 token, address from, address to, uint256 value) internal returns (bool) {
        return _callOptionalReturnBool(token, abi.encodeCall(token.transferFrom, (from, to, 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.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        forceApprove(token, spender, oldAllowance + value);
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
     * value, non-reverting calls are assumed to be successful.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
        unchecked {
            uint256 currentAllowance = token.allowance(address(this), spender);
            if (currentAllowance < requestedDecrease) {
                revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
            }
            forceApprove(token, spender, currentAllowance - requestedDecrease);
        }
    }

    /**
     * @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.
     *
     * NOTE: If the token implements ERC-7674, this function will not modify any temporary allowance. This function
     * only sets the "standard" allowance. Any temporary allowance will remain active, in addition to the value being
     * set here.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value));

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

    /**
     * @dev Performs an {ERC1363} transferAndCall, with a fallback to the simple {ERC20} transfer if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            safeTransfer(token, to, value);
        } else if (!token.transferAndCall(to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} transferFromAndCall, with a fallback to the simple {ERC20} transferFrom if the target
     * has no code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferFromAndCallRelaxed(
        IERC1363 token,
        address from,
        address to,
        uint256 value,
        bytes memory data
    ) internal {
        if (to.code.length == 0) {
            safeTransferFrom(token, from, to, value);
        } else if (!token.transferFromAndCall(from, to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} approveAndCall, with a fallback to the simple {ERC20} approve if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * NOTE: When the recipient address (`to`) has no code (i.e. is an EOA), this function behaves as {forceApprove}.
     * Opposedly, when the recipient address (`to`) has code, this function only attempts to call {ERC1363-approveAndCall}
     * once without retrying, and relies on the returned value to be true.
     *
     * Reverts if the returned value is other than `true`.
     */
    function approveAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            forceApprove(token, to, value);
        } else if (!token.approveAndCall(to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @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 {_callOptionalReturnBool} that reverts if call fails to meet the requirements.
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            let success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            // bubble errors
            if iszero(success) {
                let ptr := mload(0x40)
                returndatacopy(ptr, 0, returndatasize())
                revert(ptr, returndatasize())
            }
            returnSize := returndatasize()
            returnValue := mload(0)
        }

        if (returnSize == 0 ? address(token).code.length == 0 : returnValue != 1) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @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 silently catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        bool success;
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            returnSize := returndatasize()
            returnValue := mload(0)
        }
        return success && (returnSize == 0 ? address(token).code.length > 0 : returnValue == 1);
    }
}
"
    },
    "@openzeppelin/contracts/utils/Context.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;

/**
 * @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;
    }
}
"
    },
    "@openzeppelin/contracts/utils/introspection/IERC165.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (utils/introspection/IERC165.sol)

pragma solidity >=0.4.16;

/**
 * @dev Interface of the ERC-165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[ERC].
 *
 * 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[ERC 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);
}
"
    },
    "@openzeppelin/contracts/utils/Pausable.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (utils/Pausable.sol)

pragma solidity ^0.8.20;

import {Context} from "../utils/Context.sol";

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
    bool private _paused;

    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    /**
     * @dev The operation failed because the contract is paused.
     */
    error EnforcedPause();

    /**
     * @dev The operation failed because the contract is not paused.
     */
    error ExpectedPause();

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        _requireNotPaused();
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        _requirePaused();
        _;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }

    /**
     * @dev Throws if the contract is paused.
     */
    function _requireNotPaused() internal view virtual {
        if (paused()) {
            revert EnforcedPause();
        }
    }

    /**
     * @dev Throws if the contract is not paused.
     */
    function _requirePaused() internal view virtual {
        if (!paused()) {
            revert ExpectedPause();
        }
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}
"
    },
    "@openzeppelin/contracts/utils/ReentrancyGuard.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/ReentrancyGuard.sol)

pragma solidity ^0.8.20;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If EIP-1153 (transient storage) is available on the chain you're deploying at,
 * consider using {ReentrancyGuardTransient} instead.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant NOT_ENTERED = 1;
    uint256 private constant ENTERED = 2;

    uint256 private _status;

    /**
     * @dev Unauthorized reentrant call.
     */
    error ReentrancyGuardReentrantCall();

    constructor() {
        _status = NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be NOT_ENTERED
        if (_status == ENTERED) {
            revert ReentrancyGuardReentrantCall();
        }

        // Any calls to nonReentrant after this point will fail
        _status = ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == ENTERED;
    }
}
"
    },
    "contracts/core/MarketMakingVault.sol": {
      "content": "// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.20;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import "@openzeppelin/contracts/utils/Pausable.sol";
import "../interfaces/IAuditTrail.sol";
import "../interfaces/ITreasury.sol";
import "../interfaces/IPriceOracle.sol";

// Uniswap V2 Router Interface
interface IUniswapV2Router02 {
    function swapExactETHForTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable returns (uint[] memory amounts);

    function swapExactTokensForETH(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);

    function WETH() external pure returns (address);
}

/**
 * @title MarketMakingVault
 * @dev Holds purchased $BWS tokens with transparent withdrawal mechanisms
 * @notice This contract manages the BWS tokens purchased by the market maker
 *
 * @dev OWNERSHIP:
 * - Owner: Set via constructor parameter during deployment
 *   - Should be a hardware wallet or multisig for production (same as Treasury owner)
 *   - Can authorize/revoke traders
 *   - Can set audit trail contract
 *   - Can pause/unpause operations
 *   - Can initiate emergency withdrawals
 */
contract MarketMakingVault is Ownable, ReentrancyGuard, Pausable {
    using SafeERC20 for IERC20;

    // BWS Token contract
    IERC20 public immutable bwsToken;
    IAuditTrail public auditTrail;
    IPriceOracle public priceOracle;

    // Uniswap integration
    IUniswapV2Router02 public uniswapRouter;
    address public constant WETH = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2; // Mainnet WETH
    bool public useDEXTrading = false; // Flag to enable DEX trading
    ITreasury public treasury;
    
    // State variables
    mapping(address => bool) public authorizedTraders;
    mapping(address => uint256) public traderBalances;
    
    uint256 public totalTokensHeld;
    uint256 public totalTokensPurchased;
    uint256 public totalTokensSold;
    uint256 public emergencyWithdrawalDelay = 7 days;
    uint256 public pendingWithdrawalTimestamp;

    // Track authorized amounts per trader
    mapping(address => uint256) public authorizedAmounts;
    
    // Events
    event TokensPurchased(address indexed trader, uint256 amount, uint256 price);
    event TokensSold(address indexed trader, uint256 amount, uint256 price);
    event TraderAuthorized(address indexed trader);
    event TraderRevoked(address indexed trader);
    event EmergencyWithdrawalRequested(uint256 timestamp);
    event EmergencyWithdrawalExecuted(uint256 amount);
    
    // Modifiers
    modifier onlyAuthorizedTrader() {
        require(authorizedTraders[msg.sender], "Not authorized trader");
        _;
    }
    
    /**
     * @dev Constructor
     * @param _bwsToken BWS token contract address
     * @param _owner Address that will be the owner of the vault
     * @notice Initializes the vault with specified owner for consistent security model
     */
    constructor(address _bwsToken, address _owner) Ownable(_owner) {
        require(_bwsToken != address(0), "Invalid BWS token address");
        require(_owner != address(0), "Owner cannot be zero address");
        bwsToken = IERC20(_bwsToken);
    }
    
    /**
     * @dev Set audit trail contract
     * @param _auditTrail Audit trail contract address
     */
    function setAuditTrail(address _auditTrail) external onlyOwner {
        require(_auditTrail != address(0), "Invalid audit trail address");
        auditTrail = IAuditTrail(_auditTrail);
    }

    /**
     * @dev Set treasury contract
     * @param _treasury Treasury contract address
     */
    function setTreasury(address _treasury) external onlyOwner {
        require(_treasury != address(0), "Invalid treasury address");
        treasury = ITreasury(_treasury);
    }
    
    /**
     * @dev Purchase BWS tokens using ETH
     * @param minTokensOut Minimum tokens to receive (slippage protection)
     */
    function purchaseTokens(uint256 minTokensOut) 
        external 
        payable 
        onlyAuthorizedTrader 
        whenNotPaused 
        nonReentrant 
    {
        require(msg.value > 0, "Must send ETH");
        
        // In real implementation, this would interact with DEX/CEX
        // For simulation, we'll calculate tokens based on a mock price
        uint256 tokenPrice = getCurrentTokenPrice();
        uint256 tokensReceived = (msg.value * 1e18) / tokenPrice;
        
        require(tokensReceived >= minTokensOut, "Insufficient tokens received");
        
        // Update balances
        traderBalances[msg.sender] += tokensReceived;
        totalTokensHeld += tokensReceived;
        totalTokensPurchased += tokensReceived;
        
        // Log to audit trail
        if (address(auditTrail) != address(0)) {
            auditTrail.logTrade(
                msg.sender,
                true, // isPurchase
                tokensReceived,
                msg.value,
                tokenPrice
            );
        }
        
        emit TokensPurchased(msg.sender, tokensReceived, tokenPrice);
    }
    
    /**
     * @dev Sell BWS tokens for ETH
     * @param tokenAmount Amount of tokens to sell
     * @param minEthOut Minimum ETH to receive (slippage protection)
     */
    function sellTokens(uint256 tokenAmount, uint256 minEthOut) 
        external 
        onlyAuthorizedTrader 
        whenNotPaused 
        nonReentrant 
    {
        require(tokenAmount > 0, "Must sell positive amount");
        require(traderBalances[msg.sender] >= tokenAmount, "Insufficient token balance");
        
        // Calculate ETH to receive
        uint256 tokenPrice = getCurrentTokenPrice();
        uint256 ethReceived = (tokenAmount * tokenPrice) / 1e18;
        
        require(ethReceived >= minEthOut, "Insufficient ETH received");
        require(address(this).balance >= ethReceived, "Insufficient contract ETH balance");
        
        // Update balances
        traderBalances[msg.sender] -= tokenAmount;
        totalTokensHeld -= tokenAmount;
        totalTokensSold += tokenAmount;
        
        // Transfer ETH to trader
        (bool success, ) = msg.sender.call{value: ethReceived}("");
        require(success, "ETH transfer failed");
        
        // Log to audit trail
        if (address(auditTrail) != address(0)) {
            auditTrail.logTrade(
                msg.sender,
                false, // isPurchase
                tokenAmount,
                ethReceived,
                tokenPrice
            );
        }
        
        emit TokensSold(msg.sender, tokenAmount, tokenPrice);
    }
    
    /**
     * @dev Authorize a trader address
     * @param trader Address to authorize
     */
    function authorizeTrader(address trader) external onlyOwner {
        require(trader != address(0), "Invalid address");
        require(!authorizedTraders[trader], "Already authorized");
        
        authorizedTraders[trader] = true;
        emit TraderAuthorized(trader);
    }
    
    /**
     * @dev Revoke trader authorization
     * @param trader Address to revoke
     */
    function revokeTrader(address trader) external onlyOwner {
        require(authorizedTraders[trader], "Not authorized");

        authorizedTraders[trader] = false;
        emit TraderRevoked(trader);
    }

    /**
     * @dev Request purchase authorization from treasury
     * @param amount Amount of ETH to authorize for purchase
     * @return success True if authorization was successful
     */
    function requestPurchaseAuthorization(uint256 amount) external onlyAuthorizedTrader whenNotPaused returns (bool success) {
        require(amount > 0, "Amount must be greater than 0");
        require(address(treasury) != address(0), "Treasury not set");

        // Call treasury to authorize purchase - this will transfer ETH to this contract
        treasury.authorizePurchase(amount);

        // Track the authorized amount for this trader
        authorizedAmounts[msg.sender] += amount;

        return true;
    }

    /**
     * @dev Execute token purchase
     * @param tokenAmount Amount of BWS tokens to purchase
     * @param source Source of the purchase (e.g., "Uniswap V3")
     */
    function executePurchase(uint256 tokenAmount, string memory source) external onlyAuthorizedTrader whenNotPaused {
        require(tokenAmount > 0, "Token amount must be greater than 0");
        require(bytes(source).length > 0, "Source cannot be empty");

        // Use authorized amount or contract balance
        uint256 ethAmount;
        if (authorizedAmounts[msg.sender] > 0) {
            ethAmount = authorizedAmounts[msg.sender];
            authorizedAmounts[msg.sender] = 0;
        } else {
            ethAmount = address(this).balance;
            require(ethAmount > 0, "No authorized ETH available");
        }

        // Update trader balances and vault statistics
        traderBalances[msg.sender] += tokenAmount;
        totalTokensHeld += tokenAmount;
        totalTokensPurchased += tokenAmount;

        // Log to audit trail if available
        if (address(auditTrail) != address(0)) {
            auditTrail.logTrade(
                msg.sender,
                true, // isPurchase
                tokenAmount,
                ethAmount,
                getCurrentTokenPrice()
            );
            // Also record purchase with exchange info for integration tests
            auditTrail.recordTokenPurchaseWithExchange(address(this), ethAmount, tokenAmount, source);
        }

        emit TokensPurchased(msg.sender, tokenAmount, getCurrentTokenPrice());
    }

    /**
     * @dev Purchase BWS tokens through Uniswap DEX
     * @param minTokensOut Minimum BWS tokens to receive (slippage protection)
     * @notice Buys BWS tokens using ETH via Uniswap V2 Router
     */
    function purchaseTokensThroughDEX(uint256 minTokensOut)
        external
        payable
        onlyAuthorizedTrader
        whenNotPaused
        nonReentrant
    {
        require(msg.value > 0, "Must send ETH");
        require(useDEXTrading, "DEX trading not enabled");
        require(address(uniswapRouter) != address(0), "Uniswap router not set");

        // Create trading path: ETH -> WETH -> BWS
        address[] memory path = new address[](2);
        path[0] = WETH;
        path[1] = address(bwsToken);

        // Execute swap through Uniswap
        uint[] memory amounts = uniswapRouter.swapExactETHForTokens{value: msg.value}(
            minTokensOut,
            path,
            address(this),
            block.timestamp + 300 // 5 minute deadline
        );

        uint256 tokensReceived = amounts[amounts.length - 1];
        require(tokensReceived >= minTokensOut, "Insufficient tokens received");

        // Update balances
        traderBalances[msg.sender] += tokensReceived;
        totalTokensHeld += tokensReceived;
        totalTokensPurchased += tokensReceived;

        // Log to audit trail
        if (address(auditTrail) != address(0)) {
            auditTrail.logTrade(
                msg.sender,
                true, // isPurchase
                tokensReceived,
                msg.value,
                (msg.value * 1e18) / tokensReceived // Actual price paid
            );
        }

        emit TokensPurchased(msg.sender, tokensReceived, (msg.value * 1e18) / tokensReceived);
    }

    /**
     * @dev Sell BWS tokens through Uniswap DEX
     * @param tokenAmount Amount of BWS tokens to sell
     * @param minEthOut Minimum ETH to receive (slippage protection)
     * @notice Sells BWS tokens for ETH via Uniswap V2 Router
     */
    function sellTokensThroughDEX(uint256 tokenAmount, uint256 minEthOut)
        external
        onlyAuthorizedTrader
        whenNotPaused
        nonReentrant
    {
        require(tokenAmount > 0, "Must sell positive amount");
        require(traderBalances[msg.sender] >= tokenAmount, "Insufficient token balance");
        require(useDEXTrading, "DEX trading not enabled");
        require(address(uniswapRouter) != address(0), "Uniswap router not set");

        // Ensure vault has enough tokens
        uint256 vaultBalance = bwsToken.balanceOf(address(this));
        require(vaultBalance >= tokenAmount, "Insufficient vault balance");

        // Approve router to spend tokens
        bwsToken.approve(address(uniswapRouter), tokenAmount);

        // Create trading path: BWS -> WETH -> ETH
        address[] memory path = new address[](2);
        path[0] = address(bwsToken);
        path[1] = WETH;

        // Execute swap through Uniswap
        uint[] memory amounts = uniswapRouter.swapExactTokensForETH(
            tokenAmount,
            minEthOut,
            path,
            address(this), // Receive ETH to this contract
            block.timestamp + 300 // 5 minute deadline
        );

        uint256 ethReceived = amounts[amounts.length - 1];
        require(ethReceived >= minEthOut, "Insufficient ETH received");

        // Update balances
        traderBalances[msg.sender] -= tokenAmount;
        totalTokensHeld -= tokenAmount;
        totalTokensSold += tokenAmount;

        // Transfer ETH to trader
        (bool success, ) = msg.sender.call{value: ethReceived}("");
        require(success, "ETH transfer failed");

        // Log to audit trail
        if (address(auditTrail) != address(0)) {
            auditTrail.logTrade(
                msg.sender,
                false, // isPurchase (this is a sale)
                tokenAmount,
                ethReceived,
                (ethReceived * 1e18) / tokenAmount // Actual price received
            );
        }

        emit TokensSold(msg.sender, tokenAmount, (ethReceived * 1e18) / tokenAmount);
    }

    /**
     * @dev Set Uniswap router address
     * @param _router Uniswap V2 Router address
     * @notice Owner only - configures the DEX router for trading
     */
    function setUniswapRouter(address _router) external onlyOwner {
        require(_router != address(0), "Invalid router address");
        uniswapRouter = IUniswapV2Router02(_router);
    }

    /**
     * @dev Toggle DEX trading mode
     * @param _enabled Enable or disable DEX trading
     * @notice Owner only - switches between mock and real DEX trading
     */
    function toggleDEXTrading(bool _enabled) external onlyOwner {
        useDEXTrading = _enabled;
    }

    /**
     * @dev Check if DEX trading is properly configured
     * @return isConfigured True if router is set and DEX trading enabled
     */
    function isDEXConfigured() external view returns (bool isConfigured) {
        return address(uniswapRouter) != address(0) && useDEXTrading;
    }

    /**
     * @dev Request emergency withdrawal (governance mechanism)
     */
    function requestEmergencyWithdrawal() external onlyOwner {
        pendingWithdrawalTimestamp = block.timestamp + emergencyWithdrawalDelay;
        emit EmergencyWithdrawalRequested(pendingWithdrawalTimestamp);
    }
    
    /**
     * @dev Execute emergency withdrawal after delay
     */
    function executeEmergencyWithdrawal() external onlyOwner {
        require(pendingWithdrawalTimestamp > 0, "No withdrawal requested");
        require(block.timestamp >= pendingWithdrawalTimestamp, "Withdrawal delay not met");
        
        uint256 tokenBalance = bwsToken.balanceOf(address(this));
        uint256 ethBalance = address(this).balance;
        
        // Transfer all tokens to owner
        if (tokenBalance > 0) {
            bwsToken.safeTransfer(owner(), tokenBalance);
        }
        
        // Transfer all ETH to owner
        if (ethBalance > 0) {
            (bool success, ) = owner().call{value: ethBalance}("");
            require(success, "ETH transfer failed");
        }
        
        // Reset state
        pendingWithdrawalTimestamp = 0;
        
        emit EmergencyWithdrawalExecuted(tokenBalance);
    }
    
    /**
     * @dev Set price oracle contract
     * @param _priceOracle Price oracle contract address
     */
    function setPriceOracle(address _priceOracle) external onlyOwner {
        require(_priceOracle != address(0), "Invalid price oracle address");
        priceOracle = IPriceOracle(_priceOracle);
    }

    /**
     * @dev Get current token price from oracle or fallback
     * @return Token price in wei per token
     */
    function getCurrentTokenPrice() public view returns (uint256) {
        // Try to get price from oracle
        if (address(priceOracle) != address(0)) {
            try priceOracle.getBWSPriceInETH() returns (uint256 price) {
                if (price > 0) {
                    return price;
                }
            } catch {
                // Oracle call failed, use fallback
            }
        }

        // Fallback price: 1 BWS = 0.001 ETH (for development/testing)
        return 1e15; // 0.001 ETH in wei
    }
    
    /**
     * @dev Get vault statistics
     */
    function getVaultStats() external view returns (
        uint256 tokenBalance,
        uint256 ethBalance,
        uint256 totalHeld,
        uint256 totalPurchased,
        uint256 totalSold,
        uint256 totalEthReceived
    ) {
        tokenBalance = bwsToken.balanceOf(address(this));
        ethBalance = address(this).balance;
        totalHeld = totalTokensHeld;
        totalPurchased = totalTokensPurchased;
        totalSold = totalTokensSold;
        totalEthReceived = address(this).balance; // ETH received from treasury authorizations
    }
    
    /**
     * @dev Pause contract operations
     */
    function pause() external onlyOwner {
        _pause();
    }
    
    /**
     * @dev Unpause contract operations
     */
    function unpause() external onlyOwner {
        _unpause();
    }

    /**
     * @dev Allow traders to withdraw tokens for market making activities
     * @param amount Amount of tokens to withdraw
     */
    function withdrawTokensForTrading(uint256 amount) external onlyAuthorizedTrader whenNotPaused nonReentrant {
        require(amount > 0, "Amount must be greater than 0");
        require(traderBalances[msg.sender] >= amount, "Insufficient token balance");
        require(bwsToken.balanceOf(address(this)) >= amount, "Insufficient vault balance");

        // Update balances
        traderBalances[msg.sender] -= amount;
        totalTokensHeld -= amount;

        // Transfer tokens to trader
        bwsToken.safeTransfer(msg.sender, amount);

        emit TokensWithdrawnForTrading(msg.sender, amount);
    }

    /**
     * @dev Get token utilization statistics
     */
    function getTokenUtilization() external view returns (
        uint256 totalHeld,
        uint256 totalWithdrawn,
        uint256 availableForWithdrawal
    ) {
        totalHeld = totalTokensPurchased;
        totalWithdrawn = totalTokensPurchased - totalTokensHeld;
        availableForWithdrawal = totalTokensHeld;
    }

    // Additional events
    event TokensWithdrawnForTrading(address indexed trader, uint256 amount);

    // Receive ETH
    receive() external payable {}
}"
    },
    "contracts/interfaces/IAuditTrail.sol": {
      "content": "// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.20;

/**
 * @title IAuditTrail
 * @dev Interface for the audit trail contract
 */
interface IAuditTrail {
    /**
     * @dev Log a trade transaction
     * @param trader Address of the trader
     * @param isPurchase True for purchase, false for sale
     * @param tokenAmount Amount of BWS tokens
     * @param ethAmount Amount of ETH
     * @param price Token price at time of trade
     */
    function logTrade(
        address trader,
        bool isPurchase,
        uint256 tokenAmount,
        uint256 ethAmount,
        uint256 price
    ) external;
    
    /**
     * @dev Log revenue deposit
     * @param source Address of revenue source
     * @param amount Amount of revenue deposited
     * @param description Description of revenue source
     */
    function logRevenue(
        address source,
        uint256 amount,
        string calldata description
    ) external;
    
    /**
     * @dev Authorize a logger address
     * @param logger Address to authorize
     */
    function authorizeLogger(address logger) external;
    
    /**
     * @dev Revoke logger authorization
     * @param logger Address to revoke
     */
    function revokeLogger(address logger) external;

    /**
     * @dev Record token purchase with exchange info
     * @param vault Address of the vault making the purchase
     * @param ethAmount Amount of ETH spent
     * @param tokenAmount Amount of BWS tokens purchased
     * @param exchange Exchange used for the purchase
     */
    function recordTokenPurchaseWithExchange(
        address vault,
        uint256 ethAmount,
        uint256 tokenAmount,
        string calldata exchange
    ) external;
}"
    },
    "contracts/interfaces/IPriceOracle.sol": {
      "content": "// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.20;

/**
 * @title IPriceOracle
 * @dev Interface for price oracle implementations
 */
interface IPriceOracle {
    /**
     * @dev Get the latest price of BWS token in ETH
     * @return price The price of 1 BWS token in wei
     */
    function getBWSPriceInETH() external view returns (uint256 price);

    /**
     * @dev Get the latest price with additional metadata
     * @return price The price of 1 BWS token in wei
     * @return timestamp The timestamp of the price update
     * @return decimals The number of decimals in the price
     */
    function getLatestPriceData() external view returns (
        uint256 price,
        uint256 timestamp,
        uint8 decimals
    );

    /**
     * @dev Check if the price feed is stale
     * @param maxAge Maximum age in seconds for the price to be considered fresh
     * @return isStale True if the price is older than maxAge
     */
    function isPriceStale(uint256 maxAge) external view returns (bool isStale);
}

/**
 * @title AggregatorV3Interface
 * @dev Chainlink Price Feed Interface
 */
interface AggregatorV3Interface {
    function decimals() external view returns (uint8);

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

    function version() external view returns (uint256);

    function getRoundData(uint80 _roundId) external view returns (
        uint80 roundId,
        int256 answer,
        uint256 startedAt,
        uint256 updatedAt,
        uint80 answeredInRound
    );

    function latestRoundData() external view returns (
        uint80 roundId,
        int256 price,
        uint256 startedAt,
        uint256 updatedAt,
        uint80 answeredInRound
    );
}"
    },
    "contracts/interfaces/ITreasury.sol": {
      "content": "// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.20;

/**
 * @title ITreasury
 * @dev Interface for the Treasury contract
 */
interface ITreasury {
    function depositRevenue() external payable;
    function authorizePurchase(uint256 amount) external;
    function authorizeMarketMaker(address marketMaker) external;
    function revokeMarketMaker(address marketMaker) external;
    function updateMaxPurchasePercentage(uint256 newPercentage) external;
    function getTreasuryStats() external view returns (
        uint256 balance,
        uint256 totalDeposited,
        uint256 totalAuthorized,
        uint256 availableForAuthorization
    );
}"
    }
  },
  "settings": {
    "optimizer": {
      "enabled": true,
      "runs": 200
    },
    "evmVersion": "paris",
    "outputSelection": {
      "*": {
        "*": [
          "evm.bytecode",
          "evm.deployedBytecode",
          "devdoc",
          "userdoc",
          "metadata",
          "abi"
        ]
      }
    }
  }
}}