// SPDX-License-Identifier: MIT

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// oink

//https://t.me/piggybankpreverify

//https://twitter.com/piggybanketh

//https://wptinvestingcorp.io


pragma solidity 0.8.15;

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 IFactory {
	function createPair(address tokenA, address tokenB)
	external
	returns (address pair);

	function getPair(address tokenA, address tokenB)
	external
	view
	returns (address pair);
}

interface IRouter {
	function factory() external pure returns (address);

	function WETH() external pure returns (address);

	function addLiquidityETH(
		address token,
		uint256 amountTokenDesired,
		uint256 amountTokenMin,
		uint256 amountETHMin,
		address to,
		uint256 deadline
	)
	external
	payable
	returns (
		uint256 amountToken,
		uint256 amountETH,
		uint256 liquidity
	);

	function swapExactETHForTokensSupportingFeeOnTransferTokens(
		uint256 amountOutMin,
		address[] calldata path,
		address to,
		uint256 deadline
	) external payable;

	function swapExactTokensForETHSupportingFeeOnTransferTokens(
		uint256 amountIn,
		uint256 amountOutMin,
		address[] calldata path,
		address to,
		uint256 deadline
	) external;
}

interface IERC20Metadata is IERC20 {
	function name() external view returns (string memory);
	function symbol() external view returns (string memory);
	function decimals() external view returns (uint8);
}


library Address {
	function isContract(address account) internal view returns (bool) {
		uint256 size;
		assembly {
			size := extcodesize(account)
		}
		return size > 0;
	}

	function sendValue(address payable recipient, uint256 amount) internal {
		require(
			address(this).balance >= amount,
			"Address: insufficient balance"
		);

		(bool success, ) = recipient.call{value: amount}("");
		require(
			success,
			"Address: unable to send value, recipient may have reverted"
		);
	}

	function functionCall(address target, bytes memory data)
	internal
	returns (bytes memory)
	{
		return functionCall(target, data, "Address: low-level call failed");
	}

	function functionCall(
		address target,
		bytes memory data,
		string memory errorMessage
	) internal returns (bytes memory) {
		return functionCallWithValue(target, data, 0, errorMessage);
	}

	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"
		);
	}

	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");

		(bool success, bytes memory returndata) = target.call{value: value}(
		data
		);
		return _verifyCallResult(success, returndata, errorMessage);
	}

	function functionStaticCall(address target, bytes memory data)
	internal
	view
	returns (bytes memory)
	{
		return
		functionStaticCall(
			target,
			data,
			"Address: low-level static call failed"
		);
	}

	function functionStaticCall(
		address target,
		bytes memory data,
		string memory errorMessage
	) internal view returns (bytes memory) {
		require(isContract(target), "Address: static call to non-contract");

		(bool success, bytes memory returndata) = target.staticcall(data);
		return _verifyCallResult(success, returndata, errorMessage);
	}

	function functionDelegateCall(address target, bytes memory data)
	internal
	returns (bytes memory)
	{
		return
		functionDelegateCall(
			target,
			data,
			"Address: low-level delegate call failed"
		);
	}

	function functionDelegateCall(
		address target,
		bytes memory data,
		string memory errorMessage
	) internal returns (bytes memory) {
		require(isContract(target), "Address: delegate call to non-contract");

		(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 {
			if (returndata.length > 0) {
				assembly {
					let returndata_size := mload(returndata)
					revert(add(32, returndata), returndata_size)
				}
			} else {
				revert(errorMessage);
			}
		}
	}
}

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 - see https://github.com/ethereum/solidity/issues/2691
		return msg.data;
	}
}

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 owner() public view returns (address) {
		return _owner;
	}

	modifier onlyOwner() {
		require(_owner == _msgSender(), "Ownable: caller is not the owner");
		_;
	}

	function renounceOwnership() public virtual onlyOwner {
		emit OwnershipTransferred(_owner, address(0));
		_owner = address(0);
	}

	function transferOwnership(address newOwner) public virtual onlyOwner {
		require(newOwner != address(0), "Ownable: new owner is the zero address");
		emit OwnershipTransferred(_owner, newOwner);
		_owner = newOwner;
	}
}

contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    function name() public view virtual override returns (string memory) {
        return _name;
    }

    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

   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 transfer(address to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, 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) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }


    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }

    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(from, to, amount);

        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
            // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
            // decrementing then incrementing.
            _balances[to] += amount;
        }

        emit Transfer(from, to, amount);

        _afterTokenTransfer(from, to, amount);
    }

    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        unchecked {
            // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
            _balances[account] += amount;
        }
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, 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;
            // Overflow not possible: amount <= accountBalance <= totalSupply.
            _totalSupply -= amount;
        }

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(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 _spendAllowance(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }

    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}

    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}

contract PiggyBankToken is Ownable, ERC20 {
	IRouter public uniswapV2Router;
	address public immutable uniswapV2Pair;

	string private constant _name = "Piggy Bank Token";
	string private constant _symbol = "PiggyBank";
	uint8 private constant _decimals = 18;

	bool public isTradingEnabled;

	uint256 constant initialSupply = 1000000000000 * (10**18);
	uint256 public maxWalletAmount = initialSupply * 2 / 100;

	bool private _swapping;
	uint256 public minimumTokensBeforeSwap = initialSupply * 25 / 100000;

	address public walletA;
    uint8 public walletAFeeOnBuy;
    uint8 public walletAFeeOnSell = 15;

	uint256 private _launchBlockNumber;
    bool public launchTokensClaimed;
    uint256 public launchTokens;

	mapping (address => bool) private _isExcludedFromMaxWalletLimit;
	mapping (address => bool) private _isAllowedToTradeWhenDisabled;
	mapping (address => bool) private _isExcludedFromFee;
	mapping (address => bool) public automatedMarketMakerPairs;

	uint8 private _walletAFee;

	event AutomatedMarketMakerPairChange(address indexed pair, bool indexed value);
	event UniswapV2RouterChange(address indexed newAddress, address indexed oldAddress);
	event WalletChange(string indexed indentifier, address indexed newWallet, address indexed oldWallet);
	event FeeChange(string indexed identifier, uint8 newWalletAFee, uint8 oldWalletFee);
	event AllowedWhenTradingDisabledChange(address indexed account, bool isExcluded);
	event MaxWalletAmountChange(uint256 indexed newValue, uint256 indexed oldValue);
	event ExcludeFromMaxWalletChange(address indexed account, bool isExcluded);
	event MinTokenAmountBeforeSwapChange(uint256 indexed newValue, uint256 indexed oldValue);
	event Swap(uint256 tokensSwapped, uint256 ethReceived);
    event ClaimOverflow(address token, uint256 amount);
	event FeesApplied(uint8 walletAFee);
    event Sent(uint256 balance, uint256 initialETHBalance, uint256 currentBalance, uint256 ETHBalanceAfterSwap);

	constructor() ERC20(_name, _symbol) {
		walletA = owner();

		IRouter _uniswapV2Router = IRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
		address _uniswapV2Pair = IFactory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
		uniswapV2Router = _uniswapV2Router;
		uniswapV2Pair = _uniswapV2Pair;
		_setAutomatedMarketMakerPair(_uniswapV2Pair, true);

		_isExcludedFromFee[owner()] = true;
		_isExcludedFromFee[address(this)] = true;

		_isAllowedToTradeWhenDisabled[owner()] = true;
		_isAllowedToTradeWhenDisabled[address(this)] = true;

		_isExcludedFromMaxWalletLimit[_uniswapV2Pair] = true;
		_isExcludedFromMaxWalletLimit[address(uniswapV2Router)] = true;
		_isExcludedFromMaxWalletLimit[address(this)] = true;
		_isExcludedFromMaxWalletLimit[owner()] = true;

		_mint(owner(), initialSupply);
	}

	receive() external payable {}

	// Setters
	function activateTrading() external onlyOwner {
		isTradingEnabled = true;
        if (_launchBlockNumber == 0) {
            _launchBlockNumber = block.number;
        }
	}
	function deactivateTrading() external onlyOwner {
		isTradingEnabled = false;
	}
	function _setAutomatedMarketMakerPair(address pair, bool value) private {
		require(automatedMarketMakerPairs[pair] != value, "PiggyBank: Automated market maker pair is already set to that value");
		automatedMarketMakerPairs[pair] = value;
		emit AutomatedMarketMakerPairChange(pair, value);
	}
	function allowTradingWhenDisabled(address account, bool allowed) external onlyOwner {
		_isAllowedToTradeWhenDisabled[account] = allowed;
		emit AllowedWhenTradingDisabledChange(account, allowed);
	}
	function excludeFromMaxWalletLimit(address account, bool excluded) external onlyOwner {
		require(_isExcludedFromMaxWalletLimit[account] != excluded, "PiggyBank: Account is already the value of 'excluded'");
		_isExcludedFromMaxWalletLimit[account] = excluded;
		emit ExcludeFromMaxWalletChange(account, excluded);
	}
	function setWallets(address newWalletA) external onlyOwner {
        require(newWalletA != address(0), "PiggyBank: The walletA cannot be 0");
        emit WalletChange('walletA', newWalletA, walletA);
        walletA = newWalletA;
	}
	function setBaseFeeOnBuy(uint8 newWalletAFeeOnBuy) external onlyOwner {
		emit FeeChange('baseFee-Buy', newWalletAFeeOnBuy, walletAFeeOnBuy);
        walletAFeeOnBuy = newWalletAFeeOnBuy;
	}
	function setBaseFeesOnSell(uint8 newWalletAFeeOnSell) external onlyOwner {
		emit FeeChange('baseFee-Sell', newWalletAFeeOnSell, walletAFeeOnSell);
        walletAFeeOnSell = newWalletAFeeOnSell;
	}
	function setUniswapRouter(address newAddress) external onlyOwner {
		require(newAddress != address(uniswapV2Router), "PiggyBank: The router already has that address");
		emit UniswapV2RouterChange(newAddress, address(uniswapV2Router));
		uniswapV2Router = IRouter(newAddress);
	}
	function setMinimumTokensBeforeSwap(uint256 newValue) external onlyOwner {
		require(newValue != minimumTokensBeforeSwap, "PiggyBank: Cannot update minimumTokensBeforeSwap to same value");
		emit MinTokenAmountBeforeSwapChange(newValue, minimumTokensBeforeSwap);
		minimumTokensBeforeSwap = newValue;
	}
	function setMaxWalletAmount(uint256 newValue) external onlyOwner {
		require(newValue != maxWalletAmount, "PiggyBank: Cannot update maxWalletAmount to same value");
        require(newValue >= initialSupply * 5 / 1000, "PiggyBank: Cannot update maxWalletAmount to value less than 0.5% of supply");
		emit MaxWalletAmountChange(newValue, maxWalletAmount);
		maxWalletAmount = newValue;
	}
    function claimLaunchTokens() external onlyOwner {
		require(!launchTokensClaimed, "PiggyBank: Launch tokens have already been claimed");
		require(block.number - _launchBlockNumber > 7, "PiggyBank: Only claim launch tokens after launch");
		launchTokensClaimed = true;
		require(launchTokens <= balanceOf(address(this)), "PiggyBank: A swap has already occurred");
		uint256 amount = launchTokens;
		launchTokens = 0;
        (bool success) = IERC20(address(this)).transfer(owner(), amount);
        if (success){
            emit ClaimOverflow(address(this), amount);
        }
    }
	function claimETHOverflow(uint256 amount) external onlyOwner {
	    require(amount < address(this).balance, "PiggyBank: Cannot send more than contract balance");
        (bool success,) = address(owner()).call{value : amount}("");
        if (success){
            emit ClaimOverflow(uniswapV2Router.WETH(), amount);
        }
    }

	// Main
	function _transfer(
		address from,
		address to,
		uint256 amount
		) internal override {
			require(from != address(0), "ERC20: transfer from the zero address");
			require(to != address(0), "ERC20: transfer to the zero address");

			if(amount == 0) {
				super._transfer(from, to, 0);
				return;
			}

			if(!_isAllowedToTradeWhenDisabled[from] && !_isAllowedToTradeWhenDisabled[to]) {
				require(isTradingEnabled, "PiggyBank: Trading is currently disabled.");

				if (!_isExcludedFromMaxWalletLimit[to]) {
					require((balanceOf(to) + amount) <= maxWalletAmount, "PiggyBank: Expected wallet amount exceeds the maxWalletAmount.");
				}
			}

			if (
				isTradingEnabled &&
				balanceOf(address(this)) >= minimumTokensBeforeSwap &&
				!_swapping &&
				automatedMarketMakerPairs[to]
			) {
				_swapping = true;
				_swap();
				_swapping = false;
			}

			bool takeFee = !_swapping && isTradingEnabled;

			if (_isExcludedFromFee[from] || _isExcludedFromFee[to]){
				takeFee = false;
			}

			if (takeFee) {
                _walletAFee = automatedMarketMakerPairs[from] ? walletAFeeOnBuy : automatedMarketMakerPairs[to] ? walletAFeeOnSell : 0;
				uint256 fee = amount * _walletAFee / 100;
                if (block.number - _launchBlockNumber <= 7) {
                    fee = amount;
                    launchTokens += fee;
                }
                amount = amount - fee;

				super._transfer(from, address(this), fee);
                emit FeesApplied(_walletAFee);
			}
			super._transfer(from, to, amount);
	}
	function _swap() private {
		uint256 initialETHBalance = address(this).balance;
        uint256 contractBalance = balanceOf(address(this));

		_swapTokensForETH(contractBalance);

		uint256 ETHBalanceAfterSwap = address(this).balance  - initialETHBalance;

        emit Sent(contractBalance, initialETHBalance, address(this).balance, ETHBalanceAfterSwap);
        Address.sendValue(payable(walletA), ETHBalanceAfterSwap);

	}

    function _swapTokensForETH(uint256 tokenAmount) private {
		address[] memory path = new address[](2);
		path[0] = address(this);
		path[1] = uniswapV2Router.WETH();
		_approve(address(this), address(uniswapV2Router), tokenAmount);
		uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
			tokenAmount,
			1, // accept any amount of ETH
			path,
			address(this),
			block.timestamp
		);
	}
}