In today’s world, cryptocurrency has become a popular investment option. As a result, many people are managing their own cryptocurrency portfolios. However, keeping track of multiple cryptocurrencies and their constantly changing values can be challenging.

Firebase Realtime Database provides a powerful solution to this problem by allowing you to build a real-time cryptocurrency portfolio tracking application. In this blog post, we will walk you through the process of creating such an application.

Getting Started with Firebase Realtime Database

Before diving into the implementation details, you need to set up a Firebase project and enable the Realtime Database feature. Follow these steps to get started:

1. Go to the Firebase Console and create a new project.
2. Once the project is created, click on “Database” in the left sidebar.
3. Choose “Create Database” and select the “Start in locked mode” option for security.
4. Choose a location for your database.
5. In the “Rules” tab, update the database rules to allow read and write access for authenticated users:

{
  "rules": {
    ".read": "auth != null",
    ".write": "auth != null"
  }
}

Adding Real-time Data to the Database

To track the cryptocurrency portfolio in real-time, we need a data source that provides live cryptocurrency price updates. You can choose from various cryptocurrency APIs available online.

For this example, let’s use the CoinGecko API to get the cryptocurrency data. You can make HTTP requests to the API endpoint to retrieve the current prices and information about various cryptocurrencies.

Here’s an example of retrieving the price of Bitcoin using JavaScript:

const coinId = "bitcoin";
fetch(`https://api.coingecko.com/api/v3/simple/price?ids=${coinId}&vs_currencies=usd`)
  .then((response) => response.json())
  .then((data) => {
    const bitcoinPrice = data[coinId].usd;
    // Update the Firebase Realtime Database with the price
    // ...
  })
  .catch((error) => {
    console.error("Error fetching cryptocurrency data:", error);
  });

Once you have fetched the cryptocurrency price data, you can update the Firebase Realtime Database with the latest prices. Create a reference to the database and use the set() method to save the data:

const dbRef = firebase.database().ref("portfolio");
dbRef.set({
  bitcoin: bitcoinPrice,
  // other cryptocurrencies
});

Displaying the Real-time Data

To display the real-time cryptocurrency portfolio data, you can use the Firebase JavaScript SDK. Connect to the database, listen to changes using the on() method, and update your application accordingly.

Here’s an example of displaying the portfolio data in a simple HTML table:

const dbRef = firebase.database().ref("portfolio");
dbRef.on("value", (snapshot) => {
  const portfolio = snapshot.val();
  // Update the HTML table with the portfolio data
  // ...
});

Conclusion

With Firebase Realtime Database and a cryptocurrency API, you can easily create a real-time cryptocurrency portfolio tracking application. By keeping the data in sync with the database and updating the UI accordingly, users can see their portfolio values in real-time.

Start building your own cryptocurrency portfolio tracking application today and stay up-to-date with the ever-changing world of cryptocurrencies!

#Firebase #Cryptocurrency #Realtime #FirebaseRealtimeDatabase