Contract Source Code (Solidity Standard Json-Input format)

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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

contract BAI_ChatTransaction {
    event MessageRecorded(string indexed messageId, string message, address indexed sender);

    struct Message {
        string messageId;
        string message;
        address sender;
        uint timestamp;
    }

    Message[] public messages;

    // Admin function to record messages
    function recordMessage(string memory messageId, string memory message) public {
        messages.push(Message(messageId, message, msg.sender, block.timestamp));
        emit MessageRecorded(messageId, message, msg.sender);
    }
    
    function getMessage(uint index) public view returns (string memory, string memory, address, uint) {
        Message memory msgRecord = messages[index];
        return (msgRecord.messageId, msgRecord.message, msgRecord.sender, msgRecord.timestamp);
    }
}

{
  "evmVersion": "paris",
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

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[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"string","name":"messageId","type":"string"},{"indexed":false,"internalType":"string","name":"message","type":"string"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"MessageRecorded","type":"event"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"getMessage","outputs":[{"internalType":"string","name":"","type":"string"},{"internalType":"string","name":"","type":"string"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"messages","outputs":[{"internalType":"string","name":"messageId","type":"string"},{"internalType":"string","name":"message","type":"string"},{"internalType":"address","name":"sender","type":"address"},{"internalType":"uint256","name":"timestamp","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"messageId","type":"string"},{"internalType":"string","name":"message","type":"string"}],"name":"recordMessage","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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