/*

 ____  ____  ____  _  __  _____ ___ _   _    _    _   _  ____ _____ 
/ ___||  _ \|  _ \| |/ / |  ___|_ _| \ | |  / \  | \ | |/ ___| ____|
\___ \| |_) | |_) | ' /  | |_   | ||  \| | / _ \ |  \| | |   |  _|  
 ___) |  __/|  _ <| . \ _|  _|  | || |\  |/ ___ \| |\  | |___| |___ 
|____/|_|   |_| \_\_|\_(_)_|   |___|_| \_/_/   \_\_| \_|\____|_____|

        
https://sprk.finance/
https://x.com/SPRKfinance

*/

pragma solidity >=0.8.9;

import "@openzeppelin/contracts/access/Ownable.sol";

interface IToken {
    function creator() external view returns (address);
}

interface IWETH {
    function withdraw(uint256 amount) external;
}

interface IUniswapV3Factory {
    function getPool(
        address tokenA,
        address tokenB,
        uint24 fee
    ) external view returns (address);
}

interface ISwapRouter02 {
    struct ExactInputSingleParams {
        address tokenIn;
        address tokenOut;
        uint24 fee;
        address recipient;
        uint256 amountIn;
        uint256 amountOutMinimum;
        uint160 sqrtPriceLimitX96;
    }

    function exactInputSingle(
        ExactInputSingleParams calldata params
    ) external payable returns (uint256 amountOut);
}

interface INonfungiblePositionManager {
    struct MintParams {
        address token0;
        address token1;
        uint24 fee;
        int24 tickLower;
        int24 tickUpper;
        uint256 amount0Desired;
        uint256 amount1Desired;
        uint256 amount0Min;
        uint256 amount1Min;
        address recipient;
        uint256 deadline;
    }

    function factory() external view returns (address);
    function WETH9() external view returns (address);

    function positions(
        uint256 tokenId
    )
        external
        view
        returns (
            uint96 nonce,
            address operator,
            address token0,
            address token1,
            uint24 fee,
            int24 tickLower,
            int24 tickUpper,
            uint128 liquidity,
            uint256 feeGrowthInside0LastX128,
            uint256 feeGrowthInside1LastX128,
            uint128 tokensOwed0,
            uint128 tokensOwed1
        );

    function createAndInitializePoolIfNecessary(
        address token0,
        address token1,
        uint24 fee,
        uint160 sqrtPriceX96
    ) external returns (address pool);

    function mint(
        MintParams calldata params
    )
        external
        returns (
            uint256 tokenId,
            uint128 liquidity,
            uint256 amount0,
            uint256 amount1
        );

    struct CollectParams {
        uint256 tokenId;
        address recipient;
        uint128 amount0Max;
        uint128 amount1Max;
    }

    function collect(
        CollectParams calldata params
    ) external payable returns (uint256 amount0, uint256 amount1);

    function getApproved(uint256 tokenId) external view returns (address);
    function isApprovedForAll(
        address owner,
        address operator
    ) external view returns (bool);
    function ownerOf(uint256 tokenId) external view returns (address);
}

contract Factory is Ownable {
    event ERC20TokenCreated(address tokenAddress);

    struct TokenInfo {
        address tokenAddress;
        string name;
        string symbol;
        address deployer;
        uint256 time;
        string metadata;
        uint256 marketCapInETH;
    }

    mapping(uint256 => TokenInfo) public deployedTokens;
    uint256 public tokenCount = 0;
    bool public deployCoinEnabled = true;
    uint256 private penaltyMultiplier = 100; // 100% (100 = 100%, 50 = 50%, 200 = 200%)

    address public constant POSITION_MANAGER =
        0xC36442b4a4522E871399CD717aBDD847Ab11FE88;
    address public constant WETH = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    address public constant SWAP_ROUTER =
        0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45; // SwapRouter02

    uint24 private constant FEE_TIER = 10000;
    uint256 private constant VIRTUAL_ETH = 1.5 ether;

    event TokenPurchased(
        address buyer,
        address tokenOut,
        uint256 ethSpent,
        uint256 tokensReceived
    );

    constructor() Ownable(msg.sender) {}

    receive() external payable {}

    function deployCoin(
        string memory _name,
        string memory _symbol,
        string memory _metadata,
        bytes32 salt
    ) public payable {
        require(deployCoinEnabled, "Token deployment is currently disabled");
        Token t = new Token{salt: salt}(
            _name,
            _symbol,
            msg.sender,
            address(this)
        );
        emit ERC20TokenCreated(address(t));

        address coin_address = address(t);
        provideLiquidity(coin_address, WETH);

        if (msg.value > 0) {
            uint256 basePenalty = getPenalty(msg.value); // in basis points (e.g., 2500 = 25%)
            uint256 taxBps = (basePenalty * penaltyMultiplier) / 100; // Apply multiplier
            uint256 tax = (msg.value * taxBps) / 10000;
            uint256 amountAfterTax = msg.value - tax;

            // Retain the tax inside the contract
            // Note: address(this) already received msg.value, we only use part for swap

            ISwapRouter02(SWAP_ROUTER).exactInputSingle{value: amountAfterTax}(
                ISwapRouter02.ExactInputSingleParams({
                    tokenIn: WETH,
                    tokenOut: coin_address,
                    fee: 10000,
                    recipient: address(this), // Factory receives tokens first
                    amountIn: amountAfterTax,
                    amountOutMinimum: 0,
                    sqrtPriceLimitX96: 0
                })
            );

            IERC20 token = IERC20(coin_address);
            uint256 tokensReceived = token.balanceOf(address(this));
            token.transfer(msg.sender, tokensReceived);
        }

        deployedTokens[tokenCount] = TokenInfo({
            tokenAddress: coin_address,
            name: _name,
            symbol: _symbol,
            deployer: msg.sender,
            time: block.timestamp,
            metadata: _metadata,
            marketCapInETH: 0
        });

        tokenCount++;
    }

    function getTokenBytecode(
        string memory _name,
        string memory _symbol,
        address creator
    ) public view returns (bytes memory bytecode) {
        bytecode = abi.encodePacked(
            type(Token).creationCode,
            abi.encode(_name, _symbol, creator, address(this))
        );
    }

    function getPenalty(uint256 ethAmount) public pure returns (uint256) {
        if (ethAmount < 0.05 ether) return 0;
        if (ethAmount >= 0.30 ether) return 5000; // max 50%

        uint256 slope = 18000;
        uint256 delta = ethAmount - 0.05 ether;
        uint256 penalty = 500 + (delta * slope) / 1 ether;

        return penalty;
    }

    function getDeploysByPage(
        uint256 page,
        uint256 order
    ) public view returns (TokenInfo[] memory) {
        uint256 itemsPerPage = 50;
        require(tokenCount > 0, "No tokens deployed");

        uint256 totalPages = (tokenCount + itemsPerPage - 1) / itemsPerPage;
        require(page < totalPages, "Page out of range");

        uint256 start;
        uint256 end;
        uint256 j = 0;

        if (order == 0) {
            // Newest first
            start = tokenCount > (page + 1) * itemsPerPage
                ? tokenCount - (page + 1) * itemsPerPage
                : 0;
            end = tokenCount - page * itemsPerPage;
            if (end > tokenCount) end = tokenCount;
        } else {
            // Oldest first
            start = page * itemsPerPage;
            end = start + itemsPerPage;
            if (end > tokenCount) end = tokenCount;
        }

        TokenInfo[] memory tokens = new TokenInfo[](end - start);
        address weth = INonfungiblePositionManager(POSITION_MANAGER).WETH9();
        address factory = INonfungiblePositionManager(POSITION_MANAGER)
            .factory();

        for (uint256 i = start; i < end; i++) {
            uint256 index = order == 0 ? end - 1 - (i - start) : i;
            TokenInfo memory info = deployedTokens[index];

            uint256 marketCap = 0;
            address pool = IUniswapV3Factory(factory).getPool(
                info.tokenAddress,
                weth,
                10000
            );
            if (pool != address(0)) {
                uint256 wethInPool = IERC20(weth).balanceOf(pool);
                uint256 tokenInPool = IERC20(info.tokenAddress).balanceOf(pool);
                uint256 totalSupply = IERC20(info.tokenAddress).totalSupply();

                if (tokenInPool > 0) {
                    marketCap =
                        ((wethInPool + 1.5 ether) * totalSupply) /
                        tokenInPool;
                }
            }

            tokens[j++] = TokenInfo({
                tokenAddress: info.tokenAddress,
                name: info.name,
                symbol: info.symbol,
                deployer: info.deployer,
                time: info.time,
                metadata: info.metadata,
                marketCapInETH: marketCap
            });
        }

        return tokens;
    }

    function withdrawFeesWETH() external onlyOwner {
        uint256 wethBalance = IERC20(WETH).balanceOf(address(this));
        require(wethBalance > 0, "No WETH to withdraw");

        IWETH(WETH).withdraw(wethBalance);

        (bool success, ) = msg.sender.call{value: wethBalance}("");
        require(success, "ETH transfer failed");
    }

    function withdrawFeesETH() external onlyOwner {
        uint256 ethBalance = address(this).balance;
        require(ethBalance > 0, "No ETH to withdraw");

        (bool success, ) = msg.sender.call{value: ethBalance}("");
        require(success, "ETH transfer failed");
    }

    function toggleDeployCoin() external onlyOwner {
        deployCoinEnabled = !deployCoinEnabled;
    }

    function setPenaltyMultiplier(uint256 _multiplier) external onlyOwner {
        require(_multiplier <= 100, "Multiplier cannot exceed 100%");
        penaltyMultiplier = _multiplier;
    }

    function provideLiquidity(address tokenA, address tokenB) internal {
        bool tokenAIsToken0 = tokenA < tokenB;

        address token0 = tokenAIsToken0 ? tokenA : tokenB;
        address token1 = tokenAIsToken0 ? tokenB : tokenA;

        IERC20(token0).approve(POSITION_MANAGER, type(uint256).max);
        IERC20(token1).approve(POSITION_MANAGER, type(uint256).max);

        INonfungiblePositionManager manager = INonfungiblePositionManager(
            POSITION_MANAGER
        );

        uint160 sqrtPriceX96 = tokenAIsToken0
            ? 3068365595550320841079178
            : 2045645379722529521098596513701367;

        int24 tickLower = tokenAIsToken0 ? int24(-203000) : int24(-887200);
        int24 tickUpper = tokenAIsToken0 ? int24(887200) : int24(203000);

        uint256 amount0Desired = tokenAIsToken0
            ? 1000000000000000000000000000
            : 0;
        uint256 amount1Desired = tokenAIsToken0
            ? 0
            : 1000000000000000000000000000;

        manager.createAndInitializePoolIfNecessary(
            token0,
            token1,
            10000,
            sqrtPriceX96
        );

        manager.mint(
            INonfungiblePositionManager.MintParams({
                token0: token0,
                token1: token1,
                fee: 10000,
                tickLower: tickLower,
                tickUpper: tickUpper,
                amount0Desired: amount0Desired,
                amount1Desired: amount1Desired,
                amount0Min: 0,
                amount1Min: 0,
                recipient: address(this),
                deadline: block.timestamp
            })
        );
    }

    function collectFees(
        uint256 tokenId
    ) external returns (uint256 amount0, uint256 amount1) {
        (
            ,
            ,
            // nonce
            // operator
            address token0Raw,
            address token1Raw,
            ,
            ,
            ,
            ,
            ,
            ,
            ,

        ) = INonfungiblePositionManager(POSITION_MANAGER).positions(tokenId);

        // Ensure token1 is always WETH
        address token0 = token0Raw;
        address token1 = token1Raw;

        if (token0Raw == WETH && token1Raw != WETH) {
            token0 = token1Raw;
            token1 = token0Raw;
        }

        address creator = IToken(token0).creator();
        require(
            msg.sender == creator || msg.sender == owner(),
            "Not authorized"
        );

        uint256 beforeToken0 = IERC20(token0).balanceOf(address(this));
        uint256 beforeToken1 = IERC20(token1).balanceOf(address(this));

        INonfungiblePositionManager.CollectParams
            memory params = INonfungiblePositionManager.CollectParams({
                tokenId: tokenId,
                recipient: address(this),
                amount0Max: type(uint128).max,
                amount1Max: type(uint128).max
            });

        // Ensure token1 is actually WETH
        require(token1 == WETH, "token1 must be WETH");

        INonfungiblePositionManager(POSITION_MANAGER).collect(params);

        uint256 collected0 = IERC20(token0).balanceOf(address(this)) -
            beforeToken0;
        uint256 collected1 = IERC20(token1).balanceOf(address(this)) -
            beforeToken1;

        if (collected0 > 0) {
            IERC20(token0).transfer(
                address(0x000000000000000000000000000000000000dEaD),
                collected0
            ); // burn tokens
        }
        if (collected1 > 0) {
            uint256 half = collected1 / 2;

            IWETH(token1).withdraw(half);

            (bool success, ) = payable(creator).call{value: half}("");
            require(success, "ETH transfer to creator failed");
        }

        return (collected0, collected1);
    }
}

// SPDX-License-Identifier: MIT
import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol";
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";

contract Token is ERC20, ERC20Burnable {
    address public platform;
    address public creator;
    uint256 private launchBlock;
    uint256 private maxTxAmount;
    uint256 private constant LAUNCH_PERIOD = 5; // 5 blocks
    uint256 private constant MAX_WALLET_PERCENTAGE = 1; // 1% of total supply

    address public constant POSITION_MANAGER =
        0xC36442b4a4522E871399CD717aBDD847Ab11FE88;
    address public constant WETH = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;

    // Track transfers per tx.origin per block to detect multi-swaps
    mapping(address => uint256) private tokensFromPoolPerOrigin;

    constructor(
        string memory _name,
        string memory _symbol,
        address _creator,
        address _platform
    ) ERC20(_name, _symbol) {
        platform = _platform;
        creator = _creator;
        launchBlock = block.number;

        uint256 totalTokens = 1000000000 * 10 ** decimals();
        maxTxAmount = (totalTokens * MAX_WALLET_PERCENTAGE) / 100;

        _mint(_platform, totalTokens);
    }

    function _update(
        address from,
        address to,
        uint256 value
    ) internal override {
        if (
            block.number > launchBlock &&
            block.number <= launchBlock + LAUNCH_PERIOD
        ) {
            // Get pool address for exemption
            address factory = INonfungiblePositionManager(POSITION_MANAGER)
                .factory();
            address pool = IUniswapV3Factory(factory).getPool(
                address(this),
                WETH,
                10000
            );

            if (from == pool && to != platform && to != creator) {
                tokensFromPoolPerOrigin[tx.origin] += value;
                require(
                    tokensFromPoolPerOrigin[tx.origin] <=
                        (maxTxAmount * 110) / 100,
                    "Keeping 2% pool Limits In Kontrol"
                );
            }

            if (
                to != creator &&
                to != platform &&
                to != pool &&
                from != address(0)
            ) {
                require(
                    balanceOf(to) + value <= maxTxAmount,
                    "Max wallet limit exceeded during launch period"
                );
            }
        }

        // Block all buys at launch block except exempted transfers
        if (
            block.number == launchBlock &&
            from != address(0) &&
            to != platform &&
            from != platform &&
            !(from == platform && to == creator)
        ) {
            // Only platform can send to creator
            revert("No buys allowed during launch block!");
        }

        super._update(from, to, value);
    }

    function getTokenPair() public view returns (address, address, address) {
        address find_factory = INonfungiblePositionManager(POSITION_MANAGER)
            .factory();
        address find_pool = IUniswapV3Factory(find_factory).getPool(
            address(this),
            WETH,
            10000
        );
        return (find_pool, address(this), find_factory);
    }

    function isLaunchPeriodActive() public view returns (bool) {
        return block.number < launchBlock + LAUNCH_PERIOD;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

pragma solidity ^0.8.20;

import {Context} from "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * The initial owner is set to the address provided by the deployer. This can
 * later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

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

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(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 onlyOwner {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (interfaces/draft-IERC6093.sol)
pragma solidity ^0.8.20;

/**
 * @dev Standard ERC-20 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-20 tokens.
 */
interface IERC20Errors {
    /**
     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param balance Current balance for the interacting account.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC20InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC20InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     * @param allowance Amount of tokens a `spender` is allowed to operate with.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC20InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `spender` to be approved. Used in approvals.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC20InvalidSpender(address spender);
}

/**
 * @dev Standard ERC-721 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-721 tokens.
 */
interface IERC721Errors {
    /**
     * @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in ERC-20.
     * Used in balance queries.
     * @param owner Address of the current owner of a token.
     */
    error ERC721InvalidOwner(address owner);

    /**
     * @dev Indicates a `tokenId` whose `owner` is the zero address.
     * @param tokenId Identifier number of a token.
     */
    error ERC721NonexistentToken(uint256 tokenId);

    /**
     * @dev Indicates an error related to the ownership over a particular token. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param tokenId Identifier number of a token.
     * @param owner Address of the current owner of a token.
     */
    error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC721InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC721InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     * @param tokenId Identifier number of a token.
     */
    error ERC721InsufficientApproval(address operator, uint256 tokenId);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC721InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC721InvalidOperator(address operator);
}

/**
 * @dev Standard ERC-1155 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-1155 tokens.
 */
interface IERC1155Errors {
    /**
     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param balance Current balance for the interacting account.
     * @param needed Minimum amount required to perform a transfer.
     * @param tokenId Identifier number of a token.
     */
    error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC1155InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC1155InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     * @param owner Address of the current owner of a token.
     */
    error ERC1155MissingApprovalForAll(address operator, address owner);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC1155InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC1155InvalidOperator(address operator);

    /**
     * @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.
     * Used in batch transfers.
     * @param idsLength Length of the array of token identifiers
     * @param valuesLength Length of the array of token amounts
     */
    error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "./IERC20.sol";
import {IERC20Metadata} from "./extensions/IERC20Metadata.sol";
import {Context} from "../../utils/Context.sol";
import {IERC20Errors} from "../../interfaces/draft-IERC6093.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * The default value of {decimals} is 18. To change this, you should override
 * this function so it returns a different value.
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC-20
 * applications.
 */
abstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors {
    mapping(address account => uint256) private _balances;

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

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * Both values are immutable: they can only be set once during construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the default value returned by this function, unless
     * it's overridden.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `value`.
     */
    function transfer(address to, uint256 value) public virtual returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, value);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `value` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 value) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, value);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Skips emitting an {Approval} event indicating an allowance update. This is not
     * required by the ERC. See {xref-ERC20-_approve-address-address-uint256-bool-}[_approve].
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `value`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `value`.
     */
    function transferFrom(address from, address to, uint256 value) public virtual returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, value);
        _transfer(from, to, value);
        return true;
    }

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _transfer(address from, address to, uint256 value) internal {
        if (from == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        if (to == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(from, to, value);
    }

    /**
     * @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from`
     * (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding
     * this function.
     *
     * Emits a {Transfer} event.
     */
    function _update(address from, address to, uint256 value) internal virtual {
        if (from == address(0)) {
            // Overflow check required: The rest of the code assumes that totalSupply never overflows
            _totalSupply += value;
        } else {
            uint256 fromBalance = _balances[from];
            if (fromBalance < value) {
                revert ERC20InsufficientBalance(from, fromBalance, value);
            }
            unchecked {
                // Overflow not possible: value <= fromBalance <= totalSupply.
                _balances[from] = fromBalance - value;
            }
        }

        if (to == address(0)) {
            unchecked {
                // Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply.
                _totalSupply -= value;
            }
        } else {
            unchecked {
                // Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256.
                _balances[to] += value;
            }
        }

        emit Transfer(from, to, value);
    }

    /**
     * @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0).
     * Relies on the `_update` mechanism
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _mint(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(address(0), account, value);
    }

    /**
     * @dev Destroys a `value` amount of tokens from `account`, lowering the total supply.
     * Relies on the `_update` mechanism.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead
     */
    function _burn(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        _update(account, address(0), value);
    }

    /**
     * @dev Sets `value` as the allowance of `spender` over the `owner`'s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     *
     * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.
     */
    function _approve(address owner, address spender, uint256 value) internal {
        _approve(owner, spender, value, true);
    }

    /**
     * @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event.
     *
     * By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by
     * `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any
     * `Approval` event during `transferFrom` operations.
     *
     * Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to
     * true using the following override:
     *
     * ```solidity
     * function _approve(address owner, address spender, uint256 value, bool) internal virtual override {
     *     super._approve(owner, spender, value, true);
     * }
     * ```
     *
     * Requirements are the same as {_approve}.
     */
    function _approve(address owner, address spender, uint256 value, bool emitEvent) internal virtual {
        if (owner == address(0)) {
            revert ERC20InvalidApprover(address(0));
        }
        if (spender == address(0)) {
            revert ERC20InvalidSpender(address(0));
        }
        _allowances[owner][spender] = value;
        if (emitEvent) {
            emit Approval(owner, spender, value);
        }
    }

    /**
     * @dev Updates `owner`'s allowance for `spender` based on spent `value`.
     *
     * Does not update the allowance value in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Does not emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 value) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance < type(uint256).max) {
            if (currentAllowance < value) {
                revert ERC20InsufficientAllowance(spender, currentAllowance, value);
            }
            unchecked {
                _approve(owner, spender, currentAllowance - value, false);
            }
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/ERC20Burnable.sol)

pragma solidity ^0.8.20;

import {ERC20} from "../ERC20.sol";
import {Context} from "../../../utils/Context.sol";

/**
 * @dev Extension of {ERC20} that allows token holders to destroy both their own
 * tokens and those that they have an allowance for, in a way that can be
 * recognized off-chain (via event analysis).
 */
abstract contract ERC20Burnable is Context, ERC20 {
    /**
     * @dev Destroys a `value` amount of tokens from the caller.
     *
     * See {ERC20-_burn}.
     */
    function burn(uint256 value) public virtual {
        _burn(_msgSender(), value);
    }

    /**
     * @dev Destroys a `value` amount of tokens from `account`, deducting from
     * the caller's allowance.
     *
     * See {ERC20-_burn} and {ERC20-allowance}.
     *
     * Requirements:
     *
     * - the caller must have allowance for ``accounts``'s tokens of at least
     * `value`.
     */
    function burnFrom(address account, uint256 value) public virtual {
        _spendAllowance(account, _msgSender(), value);
        _burn(account, value);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC-20 standard.
 */
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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC-20 standard as defined in the ERC.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the value of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 value) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 value) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

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

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 100
  },
  "viaIR": true,
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

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