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// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.13;

import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {Clones} from "@openzeppelin/contracts/proxy/Clones.sol";
import {WhopPaymentGateway} from "./Gateway.sol";
import {WhopWithdrawable} from "./Withdrawable.sol";

contract WhopPaymentGatewayManager is Ownable, WhopWithdrawable {
    using Clones for address;

    error NotOwner();

    event GatewayDeployed(address indexed gateway, address indexed owner);

    address private immutable _impl = address(new WhopPaymentGateway());

    function deployGateway() external returns (address) {
        return _deployGateway();
    }

    function _deployGateway() private returns (address) {
        address gateway = _impl.clone();
        WhopPaymentGateway(payable(gateway)).init(msg.sender, 100);
        emit GatewayDeployed(gateway, msg.sender);
        return gateway;
    }

    function _beforeWithdraw(
        address withdrawer,
        address,
        address,
        uint256 amount
    ) internal view override returns (uint256) {
        if (withdrawer != owner()) revert NotOwner();
        return amount;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../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.
 *
 * By default, the owner account will be the one that deploys the contract. 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;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @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 {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing 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 {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _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);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (proxy/Clones.sol)

pragma solidity ^0.8.0;

/**
 * @dev https://eips.ethereum.org/EIPS/eip-1167[EIP 1167] is a standard for
 * deploying minimal proxy contracts, also known as "clones".
 *
 * > To simply and cheaply clone contract functionality in an immutable way, this standard specifies
 * > a minimal bytecode implementation that delegates all calls to a known, fixed address.
 *
 * The library includes functions to deploy a proxy using either `create` (traditional deployment) or `create2`
 * (salted deterministic deployment). It also includes functions to predict the addresses of clones deployed using the
 * deterministic method.
 *
 * _Available since v3.4._
 */
library Clones {
    /**
     * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
     *
     * This function uses the create opcode, which should never revert.
     */
    function clone(address implementation) internal returns (address instance) {
        /// @solidity memory-safe-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
            mstore(add(ptr, 0x14), shl(0x60, implementation))
            mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000)
            instance := create(0, ptr, 0x37)
        }
        require(instance != address(0), "ERC1167: create failed");
    }

    /**
     * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
     *
     * This function uses the create2 opcode and a `salt` to deterministically deploy
     * the clone. Using the same `implementation` and `salt` multiple time will revert, since
     * the clones cannot be deployed twice at the same address.
     */
    function cloneDeterministic(address implementation, bytes32 salt) internal returns (address instance) {
        /// @solidity memory-safe-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
            mstore(add(ptr, 0x14), shl(0x60, implementation))
            mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000)
            instance := create2(0, ptr, 0x37, salt)
        }
        require(instance != address(0), "ERC1167: create2 failed");
    }

    /**
     * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
     */
    function predictDeterministicAddress(
        address implementation,
        bytes32 salt,
        address deployer
    ) internal pure returns (address predicted) {
        /// @solidity memory-safe-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
            mstore(add(ptr, 0x14), shl(0x60, implementation))
            mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf3ff00000000000000000000000000000000)
            mstore(add(ptr, 0x38), shl(0x60, deployer))
            mstore(add(ptr, 0x4c), salt)
            mstore(add(ptr, 0x6c), keccak256(ptr, 0x37))
            predicted := keccak256(add(ptr, 0x37), 0x55)
        }
    }

    /**
     * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
     */
    function predictDeterministicAddress(address implementation, bytes32 salt)
        internal
        view
        returns (address predicted)
    {
        return predictDeterministicAddress(implementation, salt, address(this));
    }
}

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.13;

import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {WhopWithdrawable} from "./Withdrawable.sol";

contract WhopPaymentGateway is WhopWithdrawable {
    error AlreadyInititalized();
    error NotOwner();

    address private _owner;
    address private _manager;

    uint256 private _fees;

    constructor() {
        init(msg.sender, 100);
    }

    function init(address owner_, uint256 fees_) public {
        if (_owner != address(0)) revert AlreadyInititalized();
        _owner = owner_;
        _manager = msg.sender;
        _fees = fees_;
    }

    function owner() public view returns (address) {
        return _owner;
    }

    function _beforeWithdraw(
        address withdrawer,
        address receiver,
        address token,
        uint256 amount
    ) internal override returns (uint256) {
        if (withdrawer != _owner && receiver != _owner) revert NotOwner();
        uint256 fees = (amount * _fees) / 10000;
        if (token == address(0)) {
            (bool success, ) = _manager.call{value: fees}("");
            if (!success) revert TransferFailed();
        } else {
            bool success = IERC20(token).transfer(_manager, fees);
            if (!success) revert TransferFailed();
        }
        return amount - fees;
    }
}

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.13;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

abstract contract WhopWithdrawable {
    error TransferFailed();

    function withdraw() public {
        _withdrawEth(address(this).balance, msg.sender);
    }

    function withdraw(uint256 amount) public {
        if (amount > address(this).balance) amount = address(this).balance;
        _withdrawEth(amount, msg.sender);
    }

    function withdraw(address token) public {
        _withdrawERC20(
            token,
            IERC20(token).balanceOf(address(this)),
            msg.sender
        );
    }

    function withdraw(address token, uint256 amount) public {
        uint256 balance = IERC20(token).balanceOf(address(this));
        if (amount > balance) _withdrawERC20(token, balance, msg.sender);
        else _withdrawERC20(token, amount, msg.sender);
    }

    function withdrawTo(address receiver) public {
        _withdrawEth(address(this).balance, receiver);
    }

    function withdrawTo(address receiver, uint256 amount) public {
        if (amount > address(this).balance) amount = address(this).balance;
        _withdrawEth(amount, receiver);
    }

    function withdrawTo(address receiver, address token) public {
        _withdrawERC20(token, IERC20(token).balanceOf(address(this)), receiver);
    }

    function withdrawTo(
        address receiver,
        address token,
        uint256 amount
    ) public {
        uint256 balance = IERC20(token).balanceOf(address(this));
        if (amount > balance) _withdrawERC20(token, balance, receiver);
        else _withdrawERC20(token, amount, receiver);
    }

    function _withdrawEth(uint256 amount, address receiver) private {
        uint256 actual = _beforeWithdraw(
            msg.sender,
            receiver,
            address(0),
            amount
        );
        (bool success, ) = receiver.call{value: actual}("");
        if (!success) revert TransferFailed();
    }

    function _withdrawERC20(
        address token,
        uint256 amount,
        address receiver
    ) private {
        uint256 actual = _beforeWithdraw(msg.sender, receiver, token, amount);
        bool success = IERC20(token).transfer(receiver, actual);
        if (!success) revert TransferFailed();
    }

    function _beforeWithdraw(
        address withdrawer,
        address receiver,
        address token,
        uint256 amount
    ) internal virtual returns (uint256);

    receive() external payable {}
}

// 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;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);
}

{
  "remappings": [
    "@openzeppelin/=lib/openzeppelin-contracts/",
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "forge-std/=lib/forge-std/src/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 20000
  },
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "london",
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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