BetHouse.sol

bethouse.sol

//SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import "@openzeppelin/contracts/security/ReentrancyGuard.sol";

contract BetHouse is ReentrancyGuard {

  address payable _owner;
  uint256 betPrice = 0.001 ether;
  uint256 firstReward = 0.002 ether;
  uint256 secondReward = 0.003 ether;
  uint256 thirdReward = 0.004 ether;
  uint totalBets;
  uint seed;

  mapping(address => uint) public lastBetAt;

  constructor() payable {
    _owner = payable(msg.sender);
  }

  function bet(uint betPercentage) public payable nonReentrant {
    require(lastBetAt[msg.sender] + 30 seconds < block.timestamp, "You gotta wait 30s!!");
    require(betPercentage == 2 || betPercentage == 3 || betPercentage == 4, "you need to send a valid option");

    require(msg.value == betPrice, "Please submit the asking price in order to complete the bet");

    if( 
        betPercentage == 2 && address(this).balance < firstReward ||
        betPercentage == 3 && address(this).balance < secondReward ||
        betPercentage == 4 && address(this).balance < thirdReward
      ) 
      revert("Contract doesn't have money AHHHH!!");

    uint randomNumber = (block.difficulty + block.timestamp) % 100;
    seed = randomNumber;
    
    _owner.call{value: msg.value}("");

    if(betPercentage == 2 && randomNumber < 20)  { 
      (bool success,) = (msg.sender).call{value: firstReward}("");
      require(success, "Failed to send money");
    }

    if(betPercentage == 3 && randomNumber < 10)  {
      (bool success,) = (msg.sender).call{value: secondReward}("");
      require(success, "Failed to send money");
    }

    if(betPercentage == 4 && randomNumber < 5)  {
      (bool success,) = (msg.sender).call{value: thirdReward}("");
      require(success, "Failed to send money");
    }
  }
}