//SPDX-License-Identifier: MIT

//Telegram: https://t.me/LuckyStar_ETH
//X: https://x.com/LuckyStar_ETH

pragma solidity ^0.8.4;

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 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    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;
    }
}

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 {}
}

interface IUniswapSwapRouterV2 {
    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint256 amountADesired,
        uint256 amountBDesired,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    )
        external
        returns (
            uint256 amountA,
            uint256 amountB,
            uint256 liquidity
        );

    function addLiquidityETH(
        address token,
        uint256 amountTokenDesired,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    )
        external
        payable
        returns (
            uint256 amountToken,
            uint256 amountETH,
            uint256 liquidity
        );
}

interface IUniswapV2Factory {
    function getPair(address tokenA, address tokenB)
        external
        view
        returns (address pair);

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

abstract contract NoDelegateCall {
    /// @dev The original address of this contract
    address private immutable original;

    constructor() {
        // Immutables are computed in the init code of the contract, and then inlined into the deployed bytecode.
        // In other words, this variable won't change when it's checked at runtime.
        original = address(this);
    }

    /// @dev Private method is used instead of inlining into modifier because modifiers are copied into each method,
    ///     and the use of immutable means the address bytes are copied in every place the modifier is used.
    function checkNotDelegateCall() private view {
        require(address(this) == original);
    }

    /// @notice Prevents delegatecall into the modified method
    modifier noDelegateCall() {
        checkNotDelegateCall();
        _;
    }
}

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 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 {
        require(
            newOwner != address(0),
            "Ownable: new owner is the zero address"
        );
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

contract LUCKY is ERC20, Ownable, NoDelegateCall {
    address constant SWAP_ROUTER_V2 = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
    uint256 public projectStartBlockNum = 99999999999;

    uint256 public constant LOTTERY_VALUE = 0.02 ether;
    IUniswapSwapRouterV2 private constant router = IUniswapSwapRouterV2(SWAP_ROUTER_V2);

    uint256 public constant TOKEN_AMOUNT_PER_SEED = 1000 * 1e18;

    mapping(address => uint256) public SeedTimesOfAddress;
    uint256 public curSeedUnit = 0;
    uint256 public totalUnit = 1000;
    uint256 private blockSendingIndex = 1;
    mapping(uint256 => mapping(uint256 => address)) public txBlockUnitPostionByBlockNum;
    uint256 private lastLotteryBlockNum = 0;
    mapping(uint256 => uint256) public blockSentLength;
    mapping(address => uint256) public seedAddressByBlockNum;
    address[] public allSeedAddresses;
    bool public tradingEnabled = false;
    mapping(address => bool) private isV2Pair;

    address private uniswapV2air;
    mapping(address => bool) private _isExcluded;
    mapping(address => uint256) public lotteryTimesCertainAddress;

    uint256 public totalLotteryTimes=0;

    constructor() ERC20("LUCKY STAR", "LUCKY") {
        _mint(owner(), 2_000_000 * 1e18);
        _isExcluded[owner()] = true;
        _isExcluded[address(this)] = true;
        uniswapV2air = IUniswapV2Factory(router.factory()).createPair(
            address(this),
            router.WETH()
        );
        isV2Pair[address(uniswapV2air)] = true;
    }

    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual override {
        if (!_isExcluded[from] && !_isExcluded[to]) {
            //used to add initial liquidity
            if (isV2Pair[from] || isV2Pair[to]) {
                require(tradingEnabled, "trading not started!!!");
            }
        }

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

    function allSeedAddressesLength() public view returns (uint256) {
        return allSeedAddresses.length;
    }

    function toggleLaunchTrade() external onlyOwner {
        require(!tradingEnabled, "trading has started!!!");
        tradingEnabled = true;
    }

    function toggleLiquidity() external onlyOwner {
        IERC20(address(this)).approve(address(router), totalSupply());

        require(address(this).balance > 0, " no balance to add liquidity!!!");

        router.addLiquidityETH{value: address(this).balance}(
            address(this),
            totalSupply() / 2,
            0,
            0,
            owner(),
            block.timestamp + 6000
        );
    }

    function toggleLottory() external onlyOwner {
        projectStartBlockNum = block.number + 2;
        lastLotteryBlockNum = block.number + 2;
    }

    function claim() external {
        require(
            tradingEnabled,
            "claiming is available only after trading started!!!"
        );
        require(
            SeedTimesOfAddress[msg.sender] > 0,
            "None to claim for this address!"
        );
        uint256 amountToClaimByAddress = SeedTimesOfAddress[msg.sender] * TOKEN_AMOUNT_PER_SEED;
        require(
            amountToClaimByAddress > balanceOf(address(this)),
            "not enough balance to claim!"
        );
        IERC20(address(this)).transfer(msg.sender, amountToClaimByAddress);
        SeedTimesOfAddress[msg.sender]=0;
    }

    receive() external payable noDelegateCall {
        require(block.number >= projectStartBlockNum, "not lauch yet!!!");
        require(tx.origin == msg.sender, "not support send from contract.");

        require(curSeedUnit+1 <= totalUnit, "no seed balance left!");

        if (block.number - lastLotteryBlockNum >= 1) {
            blockSentLength[lastLotteryBlockNum] = blockSendingIndex - 1;
            lottery(lastLotteryBlockNum, blockSendingIndex - 1);
            totalLotteryTimes+=blockSendingIndex - 1;
            blockSendingIndex = 1;
            lastLotteryBlockNum = block.number;
        }

        if (msg.value == LOTTERY_VALUE) {
            txBlockUnitPostionByBlockNum[block.number][blockSendingIndex] = msg.sender;
            lotteryTimesCertainAddress[msg.sender]++;
            blockSendingIndex++;
        }
    }

    function lottery(uint256 blockNum, uint256 length) internal {
        if (length == 0) {
            return;
        }
        if (length <= 5) {
            for (uint256 i = 1; i <= length; i++) {
                address ltAddress = txBlockUnitPostionByBlockNum[blockNum][i];
                if (ltAddress == address(0)) continue;

                if (seedAddressByBlockNum[ltAddress] != blockNum) {
                    if (curSeedUnit >= totalUnit) continue;

                    curSeedUnit++;
                    seedAddressByBlockNum[ltAddress] = blockNum;
                    SeedTimesOfAddress[ltAddress]++;

                    if (SeedTimesOfAddress[ltAddress] == 1) {
                        allSeedAddresses.push(ltAddress);
                    }
                }
            }
        } else {
            uint256 modFive = length % 5;
            uint256 interval = length / 5;

            uint256 factor = modFive == 0 ? interval : interval + modFive;

            for (uint256 i = factor; i <= length; i = i + interval) {
                address ltAddress = txBlockUnitPostionByBlockNum[blockNum][i];

                if (ltAddress == address(0)) continue;

                if (seedAddressByBlockNum[ltAddress] != blockNum) {
                    if (curSeedUnit >= totalUnit) continue;

                    curSeedUnit++;
                    seedAddressByBlockNum[ltAddress] = blockNum;
                    SeedTimesOfAddress[ltAddress]++;

                    if (SeedTimesOfAddress[ltAddress] == 1) {
                        allSeedAddresses.push(ltAddress);
                    }
                }
            }
        }
    }
}

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