Ethane

/**
 ______ _______ _    _          _   _ ______ 
 |  ____|__   __| |  | |   /\   | \ | |  ____|
 | |__     | |  | |__| |  /  \  |  \| | |__   
 |  __|    | |  |  __  | / /\ \ | . ` |  __|  
 | |____   | |  | |  | |/ ____ \| |\  | |____ 
 |______|  |_|  |_|  |_/_/    \_\_| \_|______|
                                              
                                         

    > https://ethane.app/
    > https://t.me/EthaneErc
    > https://twitter.com/EthaneErc

*/

// SPDX-License-Identifier: MIT
 
pragma solidity 0.8.18;
 
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }
 
    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}
 
abstract contract Ownable is Context {
    address private _owner;
 
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
 
    constructor() {
        _transferOwnership(_msgSender());
    }
 
    modifier onlyOwner() {
        _checkOwner();
        _;
    }
 
    function owner() public view virtual returns (address) {
        return _owner;
    }
 
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }
 
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }
 
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }
 
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, 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 IERC20Metadata is IERC20 {
 
    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint8);
}
 
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;

    uint256 internal immutable INITIAL_CHAIN_ID;
    bytes32 internal immutable INITIAL_DOMAIN_SEPARATOR;
    mapping(address => uint256) public nonces;
 
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;

        INITIAL_CHAIN_ID = block.chainid;
        INITIAL_DOMAIN_SEPARATOR = computeDomainSeparator();
    }
 
    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;
            _balances[to] += amount;
        }
 
        emit Transfer(from, to, amount);
 
        _afterTokenTransfer(from, to, amount);
    }

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) public virtual {
        require(deadline >= block.timestamp, "PERMIT_DEADLINE_EXPIRED");

        // Unchecked because the only math done is incrementing
        // the owner's nonce which cannot realistically overflow.
        unchecked {
            address recoveredAddress = ecrecover(
                keccak256(
                    abi.encodePacked(
                        "\x19\x01",
                        DOMAIN_SEPARATOR(),
                        keccak256(
                            abi.encode(
                                keccak256(
                                    "Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"
                                ),
                                owner,
                                spender,
                                value,
                                nonces[owner]++,
                                deadline
                            )
                        )
                    )
                ),
                v,
                r,
                s
            );

            require(recoveredAddress != address(0) && recoveredAddress == owner, "INVALID_SIGNER");

            _allowances[recoveredAddress][spender] = value;
        }

        emit Approval(owner, spender, value);
    }

    function DOMAIN_SEPARATOR() public view virtual returns (bytes32) {
        return block.chainid == INITIAL_CHAIN_ID ? INITIAL_DOMAIN_SEPARATOR : computeDomainSeparator();
    }

    function computeDomainSeparator() internal view virtual returns (bytes32) {
        return
            keccak256(
                abi.encode(
                    keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
                    keccak256(bytes(_name)),
                    keccak256("1"),
                    block.chainid,
                    address(this)
                )
            );
    }
 
    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 {
            _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;
            _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 {}
}
 
interface IFactory{
        function createPair(address tokenA, address tokenB) external returns (address pair);
}
 
interface IRouter {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline) external;
}
 
 
library Address{
    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");
    }
}
 
contract Ethane is ERC20, Ownable{
    using Address for address payable;
 
    mapping (address user => bool status) public isExcludedFromFees;
    mapping (address buyer => bool status) public whitelistedBuyer;
    mapping (address buyer => bool status) public earlyBuyer;
    mapping (address buyer => uint256 amount) public earlyBuyerDailySell;
    mapping (address user => bool status) public isBlacklisted;
    mapping (address user => uint256 timestamp) public lastTrade;
 
    IRouter public router;
    address public pair;
    address public marketingWallet = 0x97C3cFa5B0f6A33D6a22fa29c728882Dd6aA8237;
 
    bool private swapping;
    bool public swapEnabled;
    bool public tradingEnabled;
    bool public finalTaxSet;
 
    uint256 public swapThreshold;
    uint256 public maxWallet = 10000 * 10**9;
    uint256 public maxTx = 10000 * 10**9;
    uint256 public earlyBuyerDailyMaxSell;
    uint256 public delay;
    uint256 public deadBlocks = 1;
    uint256 public whitelistPeriod = 0 minutes;
    uint256 public launchBlock;
    uint256 public launchTimestamp;
    uint256 public finalTaxTimestamp = 1 hours;
 
 
    struct Taxes {
        uint256 buy;
        uint256 sell;
        uint256 transfer;
    }
 
    Taxes public taxes = Taxes(20,20,0);
 
    modifier mutexLock() {
        if (!swapping) {
            swapping = true;
            _;
            swapping = false;
        }
    }
 
    constructor(address _router) ERC20("Ethane", "C2H6") {
        _mint(msg.sender, 1000000 * 10 ** 9);
 
        router = IRouter(_router);
        pair = IFactory(router.factory()).createPair(address(this), router.WETH());
 
 
        isExcludedFromFees[address(this)] = true;
        isExcludedFromFees[msg.sender] = true;
        isExcludedFromFees[marketingWallet] = true;
      
        swapThreshold = maxWallet;
        earlyBuyerDailyMaxSell = totalSupply() * 5 / 1000;
 
        _approve(address(this), address(router), type(uint256).max);
    }
 
    function decimals() public view virtual override returns (uint8) {
        return 9;
    }
 
    function _transfer(address sender, address recipient, uint256 amount) internal override {
        require(amount > 0, "Transfer amount must be greater than zero");
 
        if (swapping || isExcludedFromFees[sender] || isExcludedFromFees[recipient]) {
            super._transfer(sender, recipient, amount);
            return;
        }
 
        else{
            require(tradingEnabled, "Trading not enabled");
            require(!isBlacklisted[sender] && !isBlacklisted[recipient], "Blacklisted address");
            if(!finalTaxSet && finalTaxTimestamp + launchTimestamp < block.timestamp){
                finalTaxSet = true;
                taxes = Taxes(3, 3, 0); // set final tax after 1 hour
            }
 
            if(launchTimestamp + whitelistPeriod > block.timestamp){
                if(!whitelistedBuyer[sender] && !whitelistedBuyer[recipient]) require(amount <= maxTx, "MaxTx limit exceeded");
            }
            else require(amount <= maxTx, "MaxTx limit exceeded");
 
            if(sender != pair) {
                if(earlyBuyer[sender]){
                    if(block.timestamp - lastTrade[sender] >= 1 days){
                        earlyBuyerDailyMaxSell = 0;
                    }
                    require(earlyBuyerDailySell[sender] + amount <= earlyBuyerDailyMaxSell, "Early buyer sell limit exceeded");
                    earlyBuyerDailySell[sender] += amount;
                }
                require(lastTrade[sender] + delay <= block.timestamp, "WAIT PLEASE");
                lastTrade[sender] = block.timestamp;
            }
            if(recipient != pair){
                if(launchTimestamp + whitelistPeriod > block.timestamp && !whitelistedBuyer[recipient]){
                    isBlacklisted[recipient] == true;
                }
                require(balanceOf(recipient) + amount <= maxWallet, "Wallet limit exceeded");
                require(lastTrade[recipient] + delay <= block.timestamp, "WAIT PLEASE");
                lastTrade[recipient] = block.timestamp;
            }
        }
 
        if(whitelistedBuyer[recipient] && sender == pair && launchTimestamp + whitelistPeriod > block.timestamp){
            earlyBuyer[recipient] = true;
        }
 
        uint256 fees;
 
        if(recipient == pair) fees = amount * taxes.sell / 100;
        else if(sender == pair && !whitelistedBuyer[recipient]) fees = amount * taxes.buy / 100;
        else fees = amount * taxes.transfer / 100; 
 
        if (swapEnabled && recipient == pair && !swapping) swapFees();
 
        super._transfer(sender, recipient, amount - fees);
        if(fees > 0){
            super._transfer(sender, address(this), fees);
        }
    }
 
    function swapFees() private mutexLock {
        uint256 contractBalance = balanceOf(address(this));
        if (contractBalance >= swapThreshold) {
            uint256 amountToSwap = swapThreshold;
            if(contractBalance >= maxTx && swapThreshold != maxWallet) amountToSwap = maxTx;
 
            if(swapThreshold == maxWallet) swapThreshold = totalSupply() * 25 / 10000; // 0.25%
 
            uint256 initialBalance = address(this).balance;
            swapTokensForEth(amountToSwap);
            uint256 deltaBalance = address(this).balance - initialBalance;
            payable(marketingWallet).sendValue(deltaBalance);
        }
    }
 
    function swapTokensForEth(uint256 tokenAmount) private {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = router.WETH();
 
        router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount, 0, path, address(this), block.timestamp);
    }
 
    function setSwapEnabled(bool status) external onlyOwner {
        swapEnabled = status;
    }
 
    function setSwapTreshhold(uint256 amount) external onlyOwner {
        swapThreshold = amount * 10**9;
    }
 
    function setTaxes(uint256 _buyTax, uint256 _sellTax, uint256 _transferTax) external onlyOwner {
        taxes = Taxes(_buyTax, _sellTax, _transferTax);
    }
 
    function setRouterAndPair(address newRouter, address newPair) external onlyOwner{
        router = IRouter(newRouter);
        pair = newPair;
        _approve(address(this), address(newRouter), type(uint256).max);
    }
 
    function enableTrading() external onlyOwner{
        require(!tradingEnabled, "Already enabled");
        tradingEnabled = true;
        swapEnabled = true;
        taxes.transfer = 50;
        launchBlock = block.number;
        launchTimestamp = block.timestamp;
    }
 
    function removeLimits() external onlyOwner{
        maxTx = totalSupply();
        maxWallet = totalSupply();
        taxes.transfer = 0;
    }
 
    function setDelay(uint256 time) external onlyOwner{
        delay = time;
    }
 
    function setLimits(uint256 _maxTx, uint256 _maxWallet) external onlyOwner{
        maxTx = _maxTx * 10**9;
        maxWallet = _maxWallet * 10**9;
    }
 
    function setMarketingWallet(address newWallet) external onlyOwner{
        marketingWallet = newWallet;
    }
 
    function setIsExcludedFromFees(address _address, bool state) external onlyOwner {
        isExcludedFromFees[_address] = state;
    }
 
    function bulkIsExcludedFromFees(address[] memory accounts, bool state) external onlyOwner{
        for(uint256 i = 0; i < accounts.length; i++){
            isExcludedFromFees[accounts[i]] = state;
        }
    }
 
    function setBlacklist(address[] memory accounts, bool status) external onlyOwner{
        for(uint256 i = 0; i < accounts.length; i++){
            isBlacklisted[accounts[i]] = status;
        }
    }
 
    function rescueETH(uint256 weiAmount) external{
        payable(marketingWallet).sendValue(weiAmount);
    }
 
    function rescueERC20(address tokenAdd, uint256 amount) external{
        IERC20(tokenAdd).transfer(marketingWallet, amount);
    }
 
    // fallbacks
    receive() external payable {}
 
}

{
  "compilationTarget": {
    "Ethane.sol": "Ethane"
  },
  "evmVersion": "paris",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": []
}