// File: contracts/lucker.sol



// SPDX-License-Identifier: GPL-3.0

pragma solidity >=0.8.2 <0.9.0;
import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/IERC20.sol";


contract Lucker {

    uint256 number;
    IERC20 token;
    uint256 amount;
    uint256 collected;
    uint256 currentHodl;
    uint256 luckyNumber;
    address creator;
    // ponzi token
    constructor(address tok, uint256 _amountIn) {
        token = IERC20(tok);
        number = 0;
        currentHodl = 0;
        creator = msg.sender;
        amount = _amountIn;
        luckyNumber = 100;
    }

    function setLuckyNumber(uint256 newLuckyNumber) public {
        require(creator == msg.sender);
        luckyNumber = newLuckyNumber;
    }


    // user checking luck. pays amount tokens, if number is divisible by 
    // luckyNumber he gets all collected money 
    function checkLuck() public {
        token.transferFrom(msg.sender, address(this), amount);
        collected += amount - 95 * amount / 100;
        currentHodl += 95 * amount / 100;
        number++;
        if(number % luckyNumber == 0){
            token.transferFrom(address(this), msg.sender, currentHodl);
            number = 0;
            currentHodl = 0;
        }
    }

    // creator claiming 5%
    function claimTokens() public {
        require(creator == msg.sender);
        token.transferFrom(address(this), creator, collected);
        collected = 0;
    }

}
// File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/IERC20.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (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);
}