Twitter DApp

A decentralized Twitter-like application built on Ethereum blockchain, allowing users to create, like, and unlike tweets in a trustless environment.

Features

• Connect to MetaMask wallet
• Create tweets that are stored on the blockchain
• View your tweets
• Like and unlike tweets
• Event emissions for all interactions

Technologies Used

• Solidity (Smart Contract)
• Web3.js (Blockchain Interaction)
• HTML/CSS/JavaScript (Frontend)
• Ethereum (Blockchain)

Getting Started

Prerequisites

• MetaMask browser extension installed
• An Ethereum account with some ETH for gas fees (can use testnet)

Installation

1. Clone this repository:

   git clone https://github.com/yourusername/twitter-dapp.git
   cd twitter-dapp

2. Create a config.js file in the root directory with your contract address:

   const CONFIG = {
     CONTRACT_ADDRESS: "0xB0e..."  // Replace with your actual contract address
   };

   Note: config.js is included in .gitignore for security reasons. Never commit your contract address or private keys to public repositories.

3. Open index.html in your browser or use a local server:

Smart Contract

The Twitter contract provides the following functionality:

• createTweet(string memory _tweet): Create a new tweet
• likeTweet(address author, uint256 id): Like a tweet
• unlikeTweet(address author, uint256 id): Unlike a tweet
• getTweet(uint _i): Get a specific tweet
• getAllTweets(address _owner): Get all tweets from a specific address

Events

The contract emits the following events:

• TweetCreated(uint id, address author, string content, uint timestamp)
• TweetLiked(address liker, address tweetAuthor, uint tweetId, uint newLikeCount)
• TweetUnliked(address unliker, address tweetAuthor, uint tweetId, uint newLikeCount)

File Structure

twitter-dapp/
├── index.html         # Main HTML file
├── styles.css         # CSS styles
├── index.js           # Frontend JavaScript
├── config.js          # Configuration file with contract address (gitignored)
├── abi.json           # Contract ABI
├── Twitter.sol        # Solidity smart contract
└── README.md          # This file

Configuration

To set up your own instance of this DApp:

1. Deploy the Twitter.sol contract to Ethereum (mainnet or testnet)
2. Create the config.js file with your deployed contract address:

const CONFIG = {
    CONTRACT_ADDRESS: "0xYourDeployedContractAddress"
};

Usage

1. Open the application in your browser
2. Click "Connect Wallet" to connect your MetaMask
3. Type your message in the textarea and click "Tweet" to create a new tweet
4. View your tweets in the "Your Tweets" section
5. Like or unlike tweets using the respective buttons

Security Considerations

• The contract owner can change the maximum tweet length
• Tweets are publicly visible on the blockchain
• User interactions cost gas

License

This project is licensed under the MIT License - see the LICENSE file for details.

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

Acknowledgments

• Ethereum community
• Web3.js developers
• Solidity developers