In this tutorial, we will explore how to create a social decentralized application (dApp) using the Spheron Storage SDK. Spheron Storage provides a robust and secure backend solution for storing and managing data in a decentralized manner. By leveraging the power of Spheron Storage, we can build a social dApp with features like user registration, authentication, profile management, posting, and social interactions.

Setup Environment:
- Install the necessary development tools, such as Node.js and npm (Node Package Manager).
- Create a new directory for your project and navigate to it using the command line.
- Refer to Spheron CLI for the setup.
Initialize a new project:
- Run the following command to initialize a new project and create a package.json file:
```
  npm init -y
```
Install Spheron Storage SDK:
- Use the following command to install the Spheron Storage SDK package:
```
  npm i @spheron/storage
```
Import the SDK:
- Create a new JavaScript file, such as app.js, and import the Spheron Storage SDK at the top of the file:
```
  const spheron = require('@spheron/spheron-sdk');
```

Connect to Spheron Storage:

Initialize the Spheron Storage SDK by providing your API key and secret:

  const storage = new spheron.Storage({
    apiKey: 'YOUR_API_KEY',
    apiSecret: 'YOUR_API_SECRET',
  });

you are ready to go.

Implement user authentication using the Spheron Storage SDK:

Install the necessary dependencies:
- You'll need the express framework and the bcrypt library for password hashing.
- Run the following command to install them:

    npm install express bcrypt

Create a new file, e.g., auth.js, and import the required modules:

 const express = require('express');
 const bcrypt = require('bcrypt');
 const spheron = require('@spheron/spheron-sdk');

 const router = express.Router();
 const storage = new spheron.Storage({
   apiKey: 'YOUR_API_KEY',
   apiSecret: 'YOUR_API_SECRET',
 });

 // Define your routes and authentication logic here

Implement the user registration route:

 router.post('/register', async (req, res) => {
   const { username, password } = req.body;

   // Check if the username is already taken
   const existingUser = await storage.findOne('users', { username });
   if (existingUser) {
     return res.status(409).json({ error: 'Username already exists' });
   }

   // Hash the password
   const hashedPassword = await bcrypt.hash(password, 10);

   // Create a new user
   const newUser = {
     username,
     password: hashedPassword,
   };

   try {
     const result = await storage.create('users', newUser);
     res.status(201).json(result);
   } catch (error) {
     console.error(error);
     res.status(500).json({ error: 'Failed to create user' });
   }
 });

Implement the user login route:

 router.post('/login', async (req, res) => {
   const { username, password } = req.body;

   // Find the user by username
   const user = await storage.findOne('users', { username });
   if (!user) {
     return res.status(404).json({ error: 'User not found' });
   }

   // Compare the provided password with the stored hashed password
   const passwordMatch = await bcrypt.compare(password, user.password);
   if (!passwordMatch) {
     return res.status(401).json({ error: 'Invalid password' });
   }

   // Generate a token or session for authenticated user (you can use a library like jsonwebtoken)

   res.json({ message: 'Login successful' });
 });

Add the authentication routes to your application:

 // Assuming you have an instance of the express app
 app.use('/auth', router);

Remember to replace 'YOUR_API_KEY' and 'YOUR_API_SECRET' with your actual Spheron Storage API credentials.

Set up the server:

 const express = require('express');
 const spheron = require('@spheron/spheron-sdk');

 const app = express();
 const port = 3000;

 const storage = new spheron.Storage({
   apiKey: 'YOUR_API_KEY',
   apiSecret: 'YOUR_API_SECRET',
 });

 app.use(express.json());

 // Start the server
 app.listen(port, () => {
   console.log(`Server is running on port ${port}`);
 });

Implement the route for creating or updating a user's profile:

 app.post('/profile', async (req, res) => {
   const { userId, name, profilePicture, bio } = req.body;

   try {
     // Check if the user exists
     const user = await storage.findOne('users', { id: userId });
     if (!user) {
       return res.status(404).json({ error: 'User not found' });
     }

     // Update user profile information
     user.name = name;
     user.profilePicture = profilePicture;
     user.bio = bio;

     const result = await storage.update('users', user.id, user);
     res.json(result);
   } catch (error) {
     console.error(error);
     res.status(500).json({ error: 'Failed to update profile' });
   }
 });

Implement the route for retrieving a user's profile:

 app.get('/profile/:userId', async (req, res) => {
   const userId = req.params.userId;

   try {
     // Retrieve the user profile
     const user = await storage.findOne('users', { id: userId });
     if (!user) {
       return res.status(404).json({ error: 'User not found' });
     }

     res.json(user);
   } catch (error) {
     console.error(error);
     res.status(500).json({ error: 'Failed to retrieve profile' });
   }
 });

Start the server and listen for incoming requests:

 app.listen(port, () => {
   console.log(`Server is running on port ${port}`);
 });

Add fields for tracking likes, comments, and shares to the post schema

in your Spheron Storage schema for the "posts" collection, add the following fields:

 const postSchema = {
   userId: String,
   content: String,
   timestamp: Number,
   likes: Number,
   comments: Number,
   shares: Number,
 };

Implement routes for handling likes, comments, and shares:

 // Like a post
 app.post('/posts/:postId/like', async (req, res) => {
   const postId = req.params.postId;

   try {
     // Find the post
     const post = await storage.findOne('posts', { id: postId });
     if (!post) {
       return res.status(404).json({ error: 'Post not found' });
     }

     // Update the like count
     post.likes = post.likes ? post.likes + 1 : 1;

     const result = await storage.update('posts', postId, post);
     res.json(result);
   } catch (error) {
     console.error(error);
     res.status(500).json({ error: 'Failed to like the post' });
   }
 });

 // Comment on a post
 app.post('/posts/:postId/comment', async (req, res) => {
   const postId = req.params.postId;
   const { userId, comment } = req.body;

   try {
     // Find the post
     const post = await storage.findOne('posts', { id: postId });
     if (!post) {
       return res.status(404).json({ error: 'Post not found' });
     }

     // Update the comment count
     post.comments = post.comments ? post.comments + 1 : 1;

     const result = await storage.update('posts', postId, post);
     res.json(result);
   } catch (error) {
     console.error(error);
     res.status(500).json({ error: 'Failed to comment on the post' });
   }
 });

 // Share a post
 app.post('/posts/:postId/share', async (req, res) => {
   const postId = req.params.postId;
   const { userId, sharedPlatform } = req.body;

   try {
     // Find the post
     const post = await storage.findOne('posts', { id: postId });
     if (!post) {
       return res.status(404).json({ error: 'Post not found' });
     }

     // Update the share count
     post.shares = post.shares ? post.shares + 1 : 1;

     const result = await storage.update('posts', postId, post);

     // Implement the logic to share the post to the specified platform
     // e.g., call an external API or perform necessary actions

     res.json(result);
   } catch (error) {
     console.error(error);
     res.status(500).json({ error: 'Failed to share the post' });
   }
 });

Implement a route for retrieving a single post with likes, comments, and shares:

 app.get('/posts/:postId', async (req, res) => {
   const postId = req.params.postId;

   try {
     // Retrieve the post
     const post = await storage.findOne('posts', { id: postId });
     if (!post) {
       return res.status(404).json({ error: 'Post not found' });
     }

     res.json(post);
   } catch (error) {
     console.error(error);
     res.status

Conclusion:

That's it... this is a basic code to create a social dApp using Spheron Storage SDK. This app consists of user authentication, creating and retrieving a post and new profiles, and likes, comments, and shares to it.

Reference:

Spheron Storage SDK Docs: https://docs.spheron.network/sdk/

Spheron Docs: https://docs.spheron.network/

Create a social dApp using Spheron Storage SDK

Table of contents

Implement user authentication using the Spheron Storage SDK:

Conclusion:

Reference:

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Yogiraj Patil

Yogiraj Patil

Create a social dApp using Spheron Storage SDK

Table of contents

Implement user authentication using the Spheron Storage SDK:

Implementing user profiles in the social dApp using the Spheron Storage SDK:

Implement social interactions like likes, comments, and shares in the social dApp using the Spheron Storage SDK:

Conclusion:

Reference:

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Yogiraj Patil

Yogiraj Patil