Implementing Frontend II - Connect Wallet

In this lesson we are gonna learn how to connect Wallet.

You can check this link for metamask connection.

Getting Started with Our Virtual Meeting Application Using Moralis

In this video, we begin developing our virtual meeting application, which integrates with blockchain using Moralis.

Why Moralis?

Throughout this project, we'll use Moralis to handle blockchain interactions. Instead of making direct blockchain calls (like using MetaMask and interacting with smart contracts manually), Moralis allows us to:

• Use pre-built APIs for wallet and NFT operations.
• Fetch data such as a wallet’s native balance with simple function calls.

This simplifies the development process and accelerates integration.

Step 1: MetaMask Authentication with Moralis

To interact with the blockchain securely, we first need to authenticate the MetaMask wallet. Moralis provides a dedicated Authentication API, complete with a React tutorial and working code examples. We'll adapt that boilerplate to fit our project’s requirements.

Step 2: Creating the useAuthentication Hook

We’ll isolate the MetaMask authentication logic in a custom React hook called useAuthentication. This improves modularity and keeps related functionality in one place.

Key Setup Includes:

• Importing necessary libraries
• Setting the user’s address and connection status using the wagmi library (a tool Moralis also uses)
• Defining connectors for MetaMask (e.g., InjectedConnector)
• Creating handlers for connecting and disconnecting from the wallet

const handleConnect = async () => {
  try {
    await connect();
  } catch (error) {
    console.error(error);
  }
};

const handleDisconnect = async () => {
  try {
    await disconnect();
  } catch (error) {
    console.error(error);
  }
};

Error Handling

We wrap both connection and disconnection handlers in try/catch blocks to log any errors encountered during these processes.

Step 3: Integrating App Context

We use a global React Context to store and manage the wallet address and connection status across the app. This ensures that values persist even when the page is refreshed.

• setAddress() and setIsConnected() functions are imported from useAppContext
• These functions update the global state based on MetaMask’s connection status

Example:

setAddress(address || "");
setIsConnected(isConnected);

Step 4: Returning Data from the Hook

We return the following from our hook so other components can interact with it:

• address
• isConnected
• handleConnect
• handleDisconnect

This encapsulates all MetaMask-related functionality and ensures other parts of the application can authenticate users easily without duplicating code.

Final Notes

We’ve now completed the basic MetaMask authentication functionality using Moralis and wagmi. This setup keeps authentication logic clean, modular, and accessible throughout your application.