pragma solidity 0.8.12;
// SPDX-License-Identifier: Unlicensed
/*
 * @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) {
        this; // silence state mutability warning without generating bytecode -
        return msg.data;
    }
}


/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

/**
 * @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 () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

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

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        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 {
        emit OwnershipTransferred(_owner, address(0));
        _owner = 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");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

interface IERC20 {
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
    function totalSupply() external view returns (uint256);
    function balanceOf(address account) external view returns (uint256);
    function transfer(address to, 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 from,address to,uint256 amount) external returns (bool);
}

interface IDEXPair {
    function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
}

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

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

    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);

    function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);

    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;
}

interface IAntiSnipe {
  function setTokenOwner(address owner, address pair) external;

  function onPreTransferCheck(
    address from,
    address to,
    uint256 amount
  ) external returns (uint256 checked);
}

contract JIYU is IERC20, Ownable {
    using Address for address;
    
    address constant DEAD = 0x000000000000000000000000000000000000dEaD;

    string constant _name = "JIYU Network";
    string constant _symbol = "JIYU";
    uint8 constant _decimals = 9;

    uint256 _totalSupply = 1000000000 * (10 ** _decimals);

    mapping (address => uint256) _balances;
    mapping (address => mapping (address => uint256)) _allowances;
    mapping (address => uint256) lastSell;
    mapping (address => uint256) lastSellAmount;

    mapping (address => bool) isFeeExempt;

    uint256 buyFee = 40;
    uint256 sellFee = 40;
    uint256 feeDenominator = 1000;
    bool public buyFeesEnabled = true;
    bool public sellFeesEnabled = true;

    IAntiSnipe antibot;

    uint256 antiDumpTax = 300;
    uint256 antiDumpPeriod = 10 minutes;
    uint256 antiDumpThreshold = 150;
    bool antiDumpReserve0 = true;

    address payable public immutable taxReceiver;

    IDEXRouter public immutable router; 
    address constant routerAddress = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;

    mapping (address => bool) liquidityPools;

    address public swapPair;

    uint256 public launchedAt;
    uint256 public launchedTime;
    uint256 public deadBlocks;

    bool public swapEnabled = true;
    uint256 public swapThreshold = _totalSupply / 100; //1%
    uint256 public swapMinimum = _totalSupply / 10000; //0.01%

    bool inSwap;
    modifier swapping() { inSwap = true; _; inSwap = false; }

    constructor (address _antibot) {
        taxReceiver = payable(msg.sender);

        router = IDEXRouter(routerAddress);
        _allowances[msg.sender][routerAddress] = type(uint256).max;
        _allowances[address(this)][routerAddress] = type(uint256).max;
        
        isFeeExempt[msg.sender] = true;

        antibot = IAntiSnipe(_antibot);

        _balances[msg.sender] = _totalSupply;
        emit Transfer(address(0), msg.sender, _totalSupply);
    }

    receive() external payable { }

    function totalSupply() external view override returns (uint256) { return _totalSupply; }
    function decimals() external pure returns (uint8) { return _decimals; }
    function symbol() external pure returns (string memory) { return _symbol; }
    function name() external pure returns (string memory) { return _name; }
    function getOwner() external view returns (address) { return owner(); }
    function balanceOf(address account) public view override returns (uint256) { return _balances[account]; }
    function allowance(address holder, address spender) external view override returns (uint256) { return _allowances[holder][spender]; }

    function approve(address spender, uint256 amount) public override returns (bool) {
        _approve(msg.sender, spender, amount);
        return true;
    }

    function increaseAllowance(address spender, uint256 addedValue) external virtual returns (bool) {
        _approve(msg.sender, spender, _allowances[msg.sender][spender] + addedValue);
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue) external virtual returns (bool) {
        uint256 currentAllowance = _allowances[msg.sender][spender];
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below address(0)");
        unchecked {
            _approve(msg.sender, spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    function _approve(address owner, address spender, uint256 amount) internal virtual {
        require(owner != address(0), "ERC20: approve from the address(0) address");
        require(spender != address(0), "ERC20: approve to the address(0) address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    function approveMax(address spender) external returns (bool) {
        return approve(spender, type(uint256).max);
    }

    function transfer(address recipient, uint256 amount) external override returns (bool) {
        return _transferFrom(msg.sender, recipient, amount);
    }

    function transferFrom(address sender, address recipient, uint256 amount) external override returns (bool) {
        if(_allowances[sender][msg.sender] != type(uint256).max){
            _allowances[sender][msg.sender] = _allowances[sender][msg.sender] - amount;
        }

        return _transferFrom(sender, recipient, amount);
    }

    function _transferFrom(address sender, address recipient, uint256 amount) internal returns (bool) {
        require(_balances[sender] >= amount, "ERC20: transfer amount exceeds balance");
        require(amount > 0, "ERC20: No tokens transferred");
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        if(inSwap){ return _basicTransfer(sender, recipient, amount); }

        _balances[sender] -= amount;
 
        uint256 amountReceived = amount;
        if(shouldTakeFee(sender) && shouldTakeFee(recipient)) {
            amountReceived = takeFee(sender, recipient, amount);
            if(shouldSwapBack(sender, recipient)){ if (amount > 0) swapBack(amount); }
        }

        amountReceived = antibot.onPreTransferCheck(sender, recipient, amount);

        _balances[recipient] += amountReceived;

        emit Transfer(sender, recipient, amountReceived);
        return true;
    }

    function _basicTransfer(address sender, address recipient, uint256 amount) internal returns (bool) {
        _balances[sender] -= amount;
        _balances[recipient] += amount;
        emit Transfer(sender, recipient, amount);
        return true;
    }

    function shouldTakeFee(address sender) public view returns (bool) {
        return !isFeeExempt[sender];
    }

    function getTotalFee(bool selling) public view returns (uint256) {
        if(launchedAt + deadBlocks > block.number){ return feeDenominator - 1; }
        if(launchedAt + 10 > block.number && !selling){ return 350; }
        return (selling ? (sellFeesEnabled ? sellFee : 0) : (buyFeesEnabled ? buyFee : 0));
    }

    function checkImpactEstimate(address pair, uint256 amount) public view returns (uint256) {
        (uint112 reserve0, uint112 reserve1,) = IDEXPair(pair).getReserves();
        return amount * 1000 / ((antiDumpReserve0 ? reserve0 : reserve1) + amount);
    }

    function takeFee(address sender, address recipient, uint256 amount) internal returns (uint256) {
        uint256 feeAmount = (amount * getTotalFee(liquidityPools[recipient])) / feeDenominator;
        if (feeAmount > 0) {
            _balances[address(this)] += feeAmount;
            emit Transfer(sender, address(this), feeAmount);
            return amount - feeAmount;
        } else
            return amount;
    }

    function shouldSwapBack(address sender, address recipient) internal view returns (bool) {
        return !liquidityPools[sender]
        && !inSwap
        && swapEnabled
        && liquidityPools[recipient]
        && _balances[address(this)] >= swapMinimum;
    }

    function swapBack(uint256 amount) internal swapping {
        uint256 amountToSwap = amount < swapThreshold ? amount : swapThreshold;
        if (_balances[address(this)] < amountToSwap) amountToSwap = _balances[address(this)];

        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = router.WETH();
        
        router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            amountToSwap,
            0,
            path,
            address(this),
            block.timestamp
        );

        (bool sent, ) = taxReceiver.call{value: address(this).balance}("");
        require(sent,"Error");
    }

    function getCirculatingSupply() public view returns (uint256) {
        return _totalSupply - (balanceOf(DEAD) + balanceOf(address(0)));
    }

    function extractETH() external onlyOwner {
        (bool sent, ) = msg.sender.call{value: address(this).balance}("");
        require(sent,"Error");
    }

    function setAntiDumpTax(bool _enabled, bool _reserve0) external onlyOwner {
        if(!_enabled) {
            antiDumpTax = 0;
        } else {
            antiDumpTax = 300;
        }
        antiDumpReserve0 = _reserve0;
    }

    function start(uint256 tokens, uint256 _deadBlocks) external payable onlyOwner {
        require(launchedAt == 0);
        require(msg.value > 0);
        require(tokens > 0);

        IDEXFactory factory = IDEXFactory(router.factory());
        address ETH = router.WETH();

        swapPair = factory.createPair(ETH, address(this));

        liquidityPools[swapPair] = true;
        isFeeExempt[address(this)] = true;

        _basicTransfer(msg.sender, address(this), tokens * (10 ** _decimals));

        router.addLiquidityETH{value: msg.value}(address(this),balanceOf(address(this)),0,0,msg.sender,block.timestamp);

        deadBlocks = _deadBlocks;
        launchedAt = block.number;
        launchedTime = block.timestamp;
    }

    function setIsFeeExempt(address holder, bool exempt) external onlyOwner {
        require(holder != address(0), "Invalid address");
        isFeeExempt[holder] = exempt;
    }

    function toggleFees(bool _buyEnabled, bool _sellEnabled) external onlyOwner {
        buyFeesEnabled = _buyEnabled;
        sellFeesEnabled = _sellEnabled;
    }

    function setSwapBackSettings(bool _enabled, uint256 _denominator, uint256 _denominatorMin) external onlyOwner {
        require(_denominator > 0 && _denominatorMin > 0, "Denominators must be greater than 0");
        swapEnabled = _enabled;
        swapMinimum = _totalSupply / _denominatorMin;
        swapThreshold = _totalSupply / _denominator;
    }

    function addLiquidityPool(address _pool, bool _enabled) external onlyOwner {
        require(_pool != address(0), "Invalid address");
        liquidityPools[_pool] = _enabled;
        if(swapPair == address(0)) swapPair == _pool;
    }

	function airdrop(address[] calldata _addresses, uint256[] calldata _amount) external onlyOwner
    {
        require(_addresses.length == _amount.length);
        swapEnabled = false;
        for (uint256 i = 0; i < _addresses.length; i++) {
            require(!liquidityPools[_addresses[i]] && _addresses[i] != address(0));
            _transferFrom(msg.sender, _addresses[i], _amount[i] * (10 ** _decimals));
        }
        swapEnabled = true;
    }

}

{
  "compilationTarget": {
    "JIYU.sol": "JIYU"
  },
  "evmVersion": "london",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}