A voting contract for football clubs

voting.sol

Deployed contract address(polygon mainnet) = 0x4bc4154b03B7fBbE72CBFA33aDe77BB820FbB337


// ABI

"abi": [
    {
      "inputs": [
        {
          "internalType": "string[]",
          "name": "clubNames",
          "type": "string[]"
        }
      ],
      "stateMutability": "nonpayable",
      "type": "constructor"
    },
    {
      "inputs": [
        {
          "internalType": "uint256",
          "name": "",
          "type": "uint256"
        }
      ],
      "name": "clubs",
      "outputs": [
        {
          "internalType": "string",
          "name": "name",
          "type": "string"
        },
        {
          "internalType": "uint256",
          "name": "votes",
          "type": "uint256"
        }
      ],
      "stateMutability": "view",
      "type": "function"
    },
    {
      "inputs": [
        {
          "internalType": "uint256",
          "name": "clubId",
          "type": "uint256"
        }
      ],
      "name": "getClubVotes",
      "outputs": [
        {
          "internalType": "uint256",
          "name": "",
          "type": "uint256"
        }
      ],
      "stateMutability": "view",
      "type": "function"
    },
    {
      "inputs": [
        {
          "internalType": "address",
          "name": "",
          "type": "address"
        }
      ],
      "name": "hasVoted",
      "outputs": [
        {
          "internalType": "bool",
          "name": "",
          "type": "bool"
        }
      ],
      "stateMutability": "view",
      "type": "function"
    },
    {
      "inputs": [
        {
          "internalType": "uint256",
          "name": "clubId",
          "type": "uint256"
        }
      ],
      "name": "vote",
      "outputs": [],
      "stateMutability": "nonpayable",
      "type": "function"
    }
  ],


// Voting.sol

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.24;

// Uncomment this line to use console.log
// import "hardhat/console.sol";

contract Voting {
      struct Club {
        string name;
        uint256 votes;
    }

    Club[] public clubs;
    mapping(address => bool) public hasVoted;

    constructor(string[] memory clubNames) {
        for (uint i = 0; i < clubNames.length; i++) {
            clubs.push(Club({
                name: clubNames[i],
                votes: 0
            }));
        }
    }

    function vote(uint256 clubId) public {
        require(!hasVoted[msg.sender], "You have already voted.");
        require(clubId < clubs.length, "Invalid club ID.");

        clubs[clubId].votes++;
        hasVoted[msg.sender] = true;
    }

    function getClubVotes(uint256 clubId) public view returns (uint256) {
        require(clubId < clubs.length, "Invalid club ID.");
        return clubs[clubId].votes;
    }
}