// File: contracts/VoltSwap.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/access/Ownable.sol";

interface IUniswap {
    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;

    function WETH() external pure returns (address);

    function getAmountsOut(uint256 amountIn, address[] memory path)
        external
        view
        returns (uint256[] memory amounts);
}

interface IERC20 {
    function totalSupply() external view returns (uint256);

    function balanceOf(address account) external view returns (uint256);

    function transfer(address recipient, uint256 amount)
        external
        returns (bool);

    function allowance(address owner, address spender)
        external
        view
        returns (uint256);

    function approve(address spender, uint256 amount) external returns (bool);

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );
}

interface IPancakeFactory {
    function getPair(address tokenA, address tokenB)
        external
        view
        returns (address pair);
}

interface IERC20Metadata is IERC20 {
    function name() external view returns (string memory);

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

    function decimals() external view returns (uint8);
}

contract VoltSwap is Ownable {
    address private constant UNISWAP_V2_ROUTER =
        0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
    address private constant UNISWAP_FACTORY =
        0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f;

    address private constant WETH = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    address private constant VOLT = 0x7db5af2B9624e1b3B4Bb69D6DeBd9aD1016A58Ac;

    address internal deadAddress = 0x000000000000000000000000000000000000dEaD;
    uint256 public fee = 50;

    event GetApproval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );

    event Transfer(address sender, address recipient, uint256 amount);
    event Burned(
        address tokenIn,
        address sender,
        address recipient,
        uint256 amount
    );
    event Swap(
        uint256 totalAmount,
        uint256 amountOutMin,
        address[] path,
        address to,
        uint256 deadline
    );

    function swap(
        address _tokenIn,
        address _tokenOut,
        uint256 _amountOutMin,
        uint256 _amountIn,
        address _to
    ) public {
        IERC20(_tokenIn).transferFrom(msg.sender, address(this), _amountIn);

        IERC20(_tokenIn).approve(UNISWAP_V2_ROUTER, _amountIn);
        emit GetApproval(msg.sender, UNISWAP_V2_ROUTER, _amountIn);

        address[] memory path;

        if (_tokenIn == WETH || _tokenOut == WETH) {
            path = new address[](2);
            path[0] = _tokenIn;
            path[1] = _tokenOut;
        } else {
            path = new address[](3);
            path[0] = _tokenIn;
            path[1] = WETH;
            path[2] = _tokenOut;
        }

        IUniswap(UNISWAP_V2_ROUTER)
            .swapExactTokensForTokensSupportingFeeOnTransferTokens(
                _amountIn,
                _amountOutMin,
                path,
                _to,
                block.timestamp + 150
            );

    }

    function getPair(address _tokenIn, address _tokenOut)
        external
        view
        returns (address)
    {
        return IPancakeFactory(UNISWAP_FACTORY).getPair(_tokenIn, _tokenOut);
    }

    function getAmountOutMin(
        address _tokenIn,
        address _tokenOut,
        uint256 _amountIn
    ) external view returns (uint256) {
        address[] memory path;
        if (_tokenIn == WETH || _tokenOut == WETH) {
            path = new address[](2);
            path[0] = _tokenIn;
            path[1] = _tokenOut;
        } else {
            path = new address[](3);
            path[0] = _tokenIn;
            path[1] = WETH;
            path[2] = _tokenOut;
        }

        uint256[] memory amountOutMins = IUniswap(UNISWAP_V2_ROUTER)
            .getAmountsOut(_amountIn, path);
        return amountOutMins[path.length - 1];
    }
}

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



// 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);
    }
}

// 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;
    }
}