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



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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. 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 {
        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;
    }
}

// File: @uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router01.sol



pragma solidity >=0.6.2;

interface IUniswapV2Router01 {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint amountADesired,
        uint amountBDesired,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB, uint liquidity);
    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB);
    function removeLiquidityETH(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountToken, uint amountETH);
    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountA, uint amountB);
    function removeLiquidityETHWithPermit(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountToken, uint amountETH);
    function swapExactTokensForTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapTokensForExactTokens(
        uint amountOut,
        uint amountInMax,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);
    function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);
    function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);
    function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);

    function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
    function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
    function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
    function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
    function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}

// File: @uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol



pragma solidity >=0.6.2;

import './IUniswapV2Router01.sol';

interface IUniswapV2Router02 is IUniswapV2Router01 {
    function removeLiquidityETHSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountETH);
    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountETH);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable;
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
}

// File: contracts/Helper/UniBuy.sol



// SPDX-License-Identifier: GenesisBot.xyz
pragma solidity ^0.8.19;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol";

interface IToken {
    function decimals() external view returns (uint8);

    function totalSupply() external view returns (uint);

    function balanceOf(address) external view returns (uint);

    function maxTradingAmount() external view returns (uint);

    function maxWalletAmount() external view returns (uint);
}

contract UniBuy is Ownable {
    IUniswapV2Router02 router;

    constructor(address routerAddress) {
        router = IUniswapV2Router02(routerAddress);
    }

    receive() external payable {}

    function buyWithLimits(
        address tokenAddress,
        address[] memory destinations
    ) external payable {
        IToken token = IToken(tokenAddress);
        uint maxTradingAmount = token.maxTradingAmount();
        uint maxWalletAmount = token.maxWalletAmount();
        uint minBuyAmount = token.totalSupply() / 10_000; // minimum buy 1/10_000

        uint initBalance = address(this).balance - (msg.value * 99) / 100;

        // now buy to each destination wallet
        address[] memory path = new address[](2);
        path[0] = router.WETH();
        path[1] = tokenAddress;

        bool done = false;
        uint i;
        //getAmountsOut
        while (!done) {
            uint ethAmount = address(this).balance - initBalance;
            address to = destinations[i];
            if (maxTradingAmount > 0) {
                uint tokenBalance = token.balanceOf(to);
                uint buyAmount = maxTradingAmount;
                if (tokenBalance + maxTradingAmount > maxWalletAmount) {
                    if (tokenBalance + minBuyAmount > maxWalletAmount) {
                        buyAmount = 0;
                        i++;
                        if (i >= destinations.length) done = true;
                    } else {
                        buyAmount = maxWalletAmount - tokenBalance;
                    }
                }

                //
                if (buyAmount > 0) {
                    // check if enough eth
                    uint[] memory estOuts = router.getAmountsOut(
                        ethAmount,
                        path
                    );
                    if (estOuts[1] > buyAmount) {
                        try
                            router.swapETHForExactTokens{value: ethAmount}(
                                buyAmount,
                                path,
                                to,
                                block.timestamp + 1 minutes
                            )
                        {} catch Error(string memory) {
                            // move to next wallet
                            i++;
                            if (i >= destinations.length) done = true;
                        }
                    } else {
                        // done, not enough eth
                        done = true;
                    }
                }
            } else {
                // buy use all eth
                try
                    router.swapExactETHForTokensSupportingFeeOnTransferTokens{
                        value: ethAmount
                    }(0, path, to, block.timestamp + 1 minutes)
                {} catch Error(string memory) {}
                done = true;
            }
        }
        uint remainingEth = address(this).balance - initBalance;
        // refund
        if (remainingEth > 0) {
            (done, ) = address(msg.sender).call{value: remainingEth}("");
        }
    }

    function buyWithAmount(
        address tokenAddress,
        address[] memory destinations,
        uint amountPerTransaction
    ) external payable {
        IToken token = IToken(tokenAddress);
        uint initBalance = address(this).balance - (msg.value * 99) / 100;
        uint minBuyAmount = token.totalSupply() / 10_000; // minimum buy 0.01%
        uint maxBuyAmount = token.totalSupply() / 100; // minimum buy 1%

        // now buy to each destination wallet
        address[] memory path = new address[](2);
        path[0] = router.WETH();
        path[1] = tokenAddress;

        uint buyAmount = amountPerTransaction * (10 ** token.decimals());

        require(
            buyAmount >= minBuyAmount && buyAmount <= maxBuyAmount,
            "Amout Invalid"
        );
        // detech buyAmount
        bool done = false;
        uint ethAmount;
        while (!done) {
            ethAmount = address(this).balance - initBalance;
            try
                router.swapETHForExactTokens{value: ethAmount}(
                    buyAmount,
                    path,
                    destinations[0],
                    block.timestamp + 1 minutes
                )
            {
                done = true;
            } catch Error(string memory) {
                // try with smaller amount
                if (buyAmount > minBuyAmount) buyAmount -= minBuyAmount;
                else {
                    buyAmount = 0;
                    done = true;
                }
            }
        }
        if (buyAmount >= minBuyAmount) {
            done = false;
            uint i;
            //getAmountsOut
            while (!done) {
                address to = destinations[i];
                ethAmount = address(this).balance - initBalance;

                // check if enough eth
                uint[] memory estOuts = router.getAmountsOut(ethAmount, path);
                if (estOuts[1] > buyAmount) {
                    try
                        router.swapETHForExactTokens{value: ethAmount}(
                            buyAmount,
                            path,
                            to,
                            block.timestamp + 1 minutes
                        )
                    {} catch Error(string memory) {
                        // try for buy with smaller amount
                        uint buyAmount_ = buyAmount;
                        while (buyAmount_ > minBuyAmount) {
                            buyAmount_ -= minBuyAmount;
                            ethAmount = address(this).balance - initBalance;
                            try
                                router.swapETHForExactTokens{value: ethAmount}(
                                    buyAmount_,
                                    path,
                                    to,
                                    block.timestamp + 1 minutes
                                )
                            {} catch Error(string memory) {}
                        }
                        // move to next wallet
                        i++;
                        if (i >= destinations.length) done = true;
                    }
                } else {
                    try
                        router
                            .swapExactETHForTokensSupportingFeeOnTransferTokens{
                            value: ethAmount
                        }(0, path, to, block.timestamp + 1 minutes)
                    {
                        done = true;
                    } catch Error(string memory) {}
                    // done, not enough eth
                    done = true;
                }
            }
        }
        uint remainingEth = address(this).balance - initBalance;
        // refund
        if (remainingEth > 0) {
            (done, ) = address(msg.sender).call{value: remainingEth}("");
        }
        // get fee to owner
        if (address(this).balance > 0) {
            (done, ) = owner().call{value: address(this).balance}("");
        }
    }
}