// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
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 amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

    /**
     * @dev Moves `amount` 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 amount) 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 `amount` 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 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` 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 amount) external returns (bool);

    function burn(uint256 amount) external;

    function burnFrom(address account, uint256 amount) external;
}

/**
* SPDX-License-Identifier: Apache 2.0
* 
*
* /$$   /$$ /$$   /$$     /$$                           /$$               /$$$$$$$             /$$$$$$  /$$
*| $$  | $$| $$  | $$    |__/                          | $$              | $$__  $$           /$$__  $$| $$
*| $$  | $$| $$ /$$$$$$   /$$ /$$$$$$/$$$$   /$$$$$$  /$$$$$$    /$$$$$$ | $$  \ $$  /$$$$$$ | $$  \ $$| $$
*| $$  | $$| $$|_  $$_/  | $$| $$_  $$_  $$ |____  $$|_  $$_/   /$$__  $$| $$  | $$ /$$__  $$| $$$$$$$$| $$
*| $$  | $$| $$  | $$    | $$| $$ \ $$ \ $$  /$$$$$$$  | $$    | $$$$$$$$| $$  | $$| $$$$$$$$| $$__  $$| $$
*| $$  | $$| $$  | $$ /$$| $$| $$ | $$ | $$ /$$__  $$  | $$ /$$| $$_____/| $$  | $$| $$_____/| $$  | $$| $$
*|  $$$$$$/| $$  |  $$$$/| $$| $$ | $$ | $$|  $$$$$$$  |  $$$$/|  $$$$$$$| $$$$$$$/|  $$$$$$$| $$  | $$| $$
* \______/ |__/   \___/  |__/|__/ |__/ |__/ \_______/   \___/   \_______/|_______/  \_______/|__/  |__/|__/
*                                                                                                          
*   its not i its little L                                                                                                          
*
*  /$$$$$$            /$$                                 /$$   /$$           /$$                      /$$$$$$  /$$ /$$           /$$      
* /$$__  $$          | $$                                | $$  | $$          |__/                     /$$__  $$| $$|__/          | $$      
*| $$  \ $$  /$$$$$$$| $$$$$$$   /$$$$$$   /$$$$$$       | $$  | $$  /$$$$$$  /$$ /$$$$$$/$$$$       | $$  \__/| $$ /$$  /$$$$$$$| $$   /$$
*| $$  | $$ /$$_____/| $$__  $$ /$$__  $$ /$$__  $$      | $$$$$$$$ |____  $$| $$| $$_  $$_  $$      | $$ /$$$$| $$| $$ /$$_____/| $$  /$$/
*| $$  | $$|  $$$$$$ | $$  \ $$| $$$$$$$$| $$  \__/      | $$__  $$  /$$$$$$$| $$| $$ \ $$ \ $$      | $$|_  $$| $$| $$| $$      | $$$$$$/ 
*| $$  | $$ \____  $$| $$  | $$| $$_____/| $$            | $$  | $$ /$$__  $$| $$| $$ | $$ | $$      | $$  \ $$| $$| $$| $$      | $$_  $$ 
*|  $$$$$$/ /$$$$$$$/| $$  | $$|  $$$$$$$| $$            | $$  | $$|  $$$$$$$| $$| $$ | $$ | $$      |  $$$$$$/| $$| $$|  $$$$$$$| $$ \  $$
* \______/ |_______/ |__/  |__/ \_______/|__/            |__/  |__/ \_______/|__/|__/ |__/ |__/       \______/ |__/|__/ \_______/|__/  \__/
*                                                                                                                                         
*                                                                                                                                          
*                                                                                                                                         
*
*
*
*
**/

pragma solidity ^0.8.26;

import "contracts/IERC20.sol";
import "contracts/ReentrancyGuard.sol";

interface IInvoice {
    function verifyOwnershipByBarcode(address owner, string memory productBarcode) external view returns (bool);
}

contract LuckESH is ReentrancyGuard {
    struct CityData {
        uint256 totalTickets;
        uint256 totalDeposited;
        uint256 registrationCost;
        address[] participants;
        mapping(address => uint256) ticketsOwned;
        mapping(address => uint256) amountDeposited;
    }
    IInvoice public invoices;
    mapping(string => CityData) public cities;
    string[] public cityNames;
    IERC20 public token;
    address public owner;

    uint256 public constant MIN_CITY_COST = 65 * 1e18;
    uint256 public constant MAX_CITY_COST = 90 * 1e18;

    event Registered(address indexed participant, uint256 tickets, string city);
    event LuckSpinned(address indexed winner, uint256 amount, string city);
    event RegistrationCostUpdated(uint256 newCost, string city);
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    event TokenChanged(address indexed oldToken, address indexed newToken);
    event Refunded(address indexed participant, uint256 amount, string city);
    event CityInitialized(string city, uint256 initialCost);

    modifier onlyOwner() {
        require(msg.sender == owner, "Not the owner");
        _;
    }

    constructor(IERC20 _token,address _invoices) {
        token = _token;
        owner = msg.sender;
        invoices = IInvoice(_invoices);
    }

    function initializeCity(string memory _city) internal {
        if (cities[_city].registrationCost == 0) {
            uint256 initialCost = getRandomCost();
            cities[_city].registrationCost = initialCost;
            cityNames.push(_city);
            emit CityInitialized(_city, initialCost);
        }
    }

    function getRandomCost() internal view returns (uint256) {
        uint256 range = MAX_CITY_COST - MIN_CITY_COST;
        uint256 randomness = uint256(keccak256(abi.encodePacked(block.timestamp, block.prevrandao, msg.sender)));
        return MIN_CITY_COST + (randomness % (range + 1));
    }

    function calculatePrice(uint256 _tickets, string memory _city) public view returns (uint256) {
        return _tickets * cities[_city].registrationCost;
    }

    function getTicketsOwned(string memory _city, address _participant) public view returns (uint256) {
        return cities[_city].ticketsOwned[_participant];
    }

    function register(uint256 _tickets, string memory _city) public nonReentrant {
        require(invoices.verifyOwnershipByBarcode(msg.sender,"LOTERRY"),"You Don't Have CitizenShip");
        require(_tickets > 0, "Must buy at least one ticket");
        
        initializeCity(_city);

        uint256 cost = calculatePrice(_tickets, _city);
        require(token.transferFrom(msg.sender, address(this), cost), "Transfer failed");

        CityData storage cityData = cities[_city];
        if (cityData.ticketsOwned[msg.sender] == 0) {
            cityData.participants.push(msg.sender);
        }
        cityData.ticketsOwned[msg.sender] += _tickets;
        cityData.amountDeposited[msg.sender] += cost;
        cityData.totalTickets += _tickets;
        cityData.totalDeposited += cost;

        emit Registered(msg.sender, _tickets, _city);
    }

    function spinTheLuck(bytes32 randomSeed, string memory _city) public onlyOwner nonReentrant {
        CityData storage cityData = cities[_city];
        require(cityData.totalTickets > 0, "No tickets sold for this city");

        uint256 winningTicket = getRandomNumber(randomSeed) % cityData.totalTickets;
        address winner;
        uint256 ticketCount = 0;

        for (uint256 i = 0; i < cityData.participants.length; i++) {
            address participant = cityData.participants[i];
            ticketCount += cityData.ticketsOwned[participant];
            if (ticketCount > winningTicket) {
                winner = participant;
                break;
            }
        }

        uint256 totalDeposited = cityData.totalDeposited;
        require(token.approve(address(this), totalDeposited), "Approval failed");
        require(token.transfer(owner, totalDeposited / 3), "Transfer to owner failed");
        require(token.transfer(winner, totalDeposited * 2 / 3), "Transfer to winner failed");

        emit LuckSpinned(winner, totalDeposited, _city);

        // Reset the city state
        for (uint256 i = 0; i < cityData.participants.length; i++) {
            delete cityData.ticketsOwned[cityData.participants[i]];
            delete cityData.amountDeposited[cityData.participants[i]];
        }
        delete cityData.participants;
        cityData.totalTickets = 0;
        cityData.totalDeposited = 0;
    }

    function getRandomNumber(bytes32 randomSeed) internal view returns (uint256) {
        uint256 randomNumber;
        assembly {
            let fp := mload(0x40)
            mstore(fp, randomSeed)
            mstore(add(fp, 32), timestamp())
            mstore(add(fp, 64), prevrandao())
            mstore(add(fp, 96), blockhash(sub(number(), 1)))
            randomNumber := keccak256(fp, 128)
        }
        return randomNumber;
    }

    function setRegistrationCost(uint256 _newCost, string memory _city) public onlyOwner {
        initializeCity(_city);
        cities[_city].registrationCost = _newCost;
        emit RegistrationCostUpdated(_newCost, _city);
    }

    function transferOwnership(address newOwner) public onlyOwner {
        require(newOwner != address(0), "New owner is the zero address");
        address oldOwner = owner;
        owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }

    function getParticipantsCount(string memory _city) public view returns (uint256) {
        return cities[_city].participants.length;
    }

    function getCityTotalDeposited(string memory _city) public view returns (uint256) {
        return cities[_city].totalDeposited;
    }

    function getCityPrice(string memory _city) public view returns (uint256) {
        return cities[_city].registrationCost;
    }

    function changeToken(address _newToken) public onlyOwner nonReentrant {
        require(_newToken != address(0), "New token is the zero address");
        IERC20 oldToken = token;
        token = IERC20(_newToken);

        // Refund all participants with the old token for all cities
        for (uint256 j = 0; j < cityNames.length; j++) {
            string memory city = cityNames[j];
            CityData storage cityData = cities[city];
            for (uint256 i = 0; i < cityData.participants.length; i++) {
                address participant = cityData.participants[i];
                uint256 amount = cityData.amountDeposited[participant];
                if (amount > 0) {
                    require(oldToken.transfer(participant, amount), "Refund transfer failed");
                    emit Refunded(participant, amount, city);
                    delete cityData.amountDeposited[participant];
                    delete cityData.ticketsOwned[participant];
                }
            }
            delete cityData.participants;
            cityData.totalTickets = 0;
            cityData.totalDeposited = 0;
        }

        emit TokenChanged(address(oldToken), address(_newToken));
    }

    function getCityNames() public view returns (string[] memory) {
        return cityNames;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol)

pragma solidity ^0.8.23;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == _ENTERED;
    }
}

{
  "compilationTarget": {
    "contracts/LuckMachine.sol": "LuckESH"
  },
  "evmVersion": "paris",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}