Contract Source Code (Solidity Standard Json-Input format)

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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.28;

/**
 * @title PostManager
 * @dev Contract for managing blog posts on-chain
 * @notice This contract stores IPFS/Bundlr CIDs and author addresses for blog posts
 */
contract PostManager {
    /// @notice Auto-increment primary key for posts
    uint256 public postCount;

    /// @notice Mapping from post ID to IPFS/Bundlr CID
    mapping(uint256 => string) public posts;

    /// @notice Mapping from post ID to author address
    mapping(uint256 => address) public authors;

    /// @notice Event emitted when a new post is created
    event PostCreated(uint256 indexed id, address indexed author, string cid);

    /**
     * @dev Creates a new post with the given CID
     * @param cid The IPFS/Bundlr CID of the post content
     * @return postId The ID of the created post
     */
    function createPost(string calldata cid) external returns (uint256 postId) {
        // Increment post count to get new post ID
        postCount++;
        postId = postCount;

        // Store the post data
        posts[postId] = cid;
        authors[postId] = msg.sender;

        // Emit event
        emit PostCreated(postId, msg.sender, cid);
    }

    /**
     * @dev Returns the post CID for a given post ID
     * @param postId The post ID to query
     * @return cid The IPFS/Bundlr CID of the post
     */
    function getPost(uint256 postId) external view returns (string memory cid) {
        return posts[postId];
    }

    /**
     * @dev Returns the author address for a given post ID
     * @param postId The post ID to query
     * @return author The address of the post author
     */
    function getAuthor(uint256 postId) external view returns (address author) {
        return authors[postId];
    }

    /**
     * @dev Returns the post data for a given post ID
     * @param postId The post ID to query
     * @return cid The IPFS/Bundlr CID of the post
     * @return author The address of the post author
     */
    function getPostData(uint256 postId) external view returns (string memory cid, address author) {
        return (posts[postId], authors[postId]);
    }
}

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

[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"id","type":"uint256"},{"indexed":true,"internalType":"address","name":"author","type":"address"},{"indexed":false,"internalType":"string","name":"cid","type":"string"}],"name":"PostCreated","type":"event"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"authors","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"cid","type":"string"}],"name":"createPost","outputs":[{"internalType":"uint256","name":"postId","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"postId","type":"uint256"}],"name":"getAuthor","outputs":[{"internalType":"address","name":"author","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"postId","type":"uint256"}],"name":"getPost","outputs":[{"internalType":"string","name":"cid","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"postId","type":"uint256"}],"name":"getPostData","outputs":[{"internalType":"string","name":"cid","type":"string"},{"internalType":"address","name":"author","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"postCount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"posts","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"}]

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