Prerequisites Before you begin, make sure you have:
A code editor or API client (we’ll use cURL in examples)
The API base URL: https://api.vaniykempire.com
Basic understanding of REST APIs and HTTP requests
This guide walks through the complete user journey: signup, authentication, browsing content, making a purchase, and accessing purchased content.
Step 1: Create an Account First, create a user account by calling the signup endpoint:
cURL
JavaScript (Fetch)
Python (Requests)
curl -X POST https://api.vaniykempire.com/api/auth/signup \ -H "Content-Type: application/json" \ -d '{ "email": "user@example.com", "password": "SecurePassword123!", "name": "John Doe" }'
Response { "message" : "User created successfully" , "user" : { "id" : "65f7b3c8e1234567890abcde" , "email" : "user@example.com" , "name" : "John Doe" }, "session" : { "access_token" : "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9..." , "token_type" : "bearer" , "expires_in" : 3600 , "refresh_token" : "v1.Mr0hBPHxxx..." , "user" : { "id" : "a1b2c3d4-e5f6-7890-abcd-ef1234567890" , "email" : "user@example.com" } } }
Save the access_token from the response. You’ll need it for authenticated requests. The token expires in 3600 seconds (1 hour).
Step 2: Browse Available Content Browse the content catalog without authentication:
curl https://api.vaniykempire.com/api/content?page= 1 & limit = 10
Response { "content" : [ { "_id" : "65f7b3c8e1234567890abcdf" , "title" : "Advanced React Patterns" , "description" : "Master advanced React patterns and best practices" , "type" : "video" , "category" : "65f7b3c8e1234567890abcd0" , "price" : 29.99 , "thumbnailUrl" : "https://res.cloudinary.com/demo/image/upload/v1234567890/thumbnail.jpg" , "duration" : 3600 , "status" : "published" , "createdAt" : "2024-03-15T10:30:00.000Z" } ], "totalPages" : 5 , "currentPage" : 1 , "totalContent" : 48 }
Note that the file URL is not included in the public listing. You must purchase content to access the actual files.
Step 3: Get Content Details View detailed information about specific content:
curl https://api.vaniykempire.com/api/content/65f7b3c8e1234567890abcdf
Response { "content" : { "_id" : "65f7b3c8e1234567890abcdf" , "title" : "Advanced React Patterns" , "description" : "Master advanced React patterns including compound components, render props, custom hooks, and state management strategies. This comprehensive course covers everything you need to build scalable React applications." , "type" : "video" , "category" : { "_id" : "65f7b3c8e1234567890abcd0" , "name" : "Web Development" }, "price" : 29.99 , "thumbnailUrl" : "https://res.cloudinary.com/demo/image/upload/v1234567890/thumbnail.jpg" , "duration" : 3600 , "fileSize" : 1048576000 , "tags" : [ "react" , "javascript" , "frontend" , "advanced" ], "status" : "published" , "createdBy" : { "_id" : "65f7b3c8e1234567890abcd1" , "name" : "Sarah Johnson" }, "createdAt" : "2024-03-15T10:30:00.000Z" } }
Step 4: Create a Payment Intent To purchase content, create a payment intent with Stripe:
curl -X POST https://api.vaniykempire.com/api/payments/create-payment-intent \ -H "Content-Type: application/json" \ -H "Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9..." \ -d '{ "contentId": "65f7b3c8e1234567890abcdf" }'
Response { "clientSecret" : "pi_3MtwBwLkdIwHu7ix28a3tqPa_secret_YrKJUKribcBjcG8HVhfZluoGH" , "amount" : 29.99 }
Backend Creates Payment Intent
The API creates a Stripe payment intent and a pending purchase record in MongoDB.
Frontend Processes Payment
Use the clientSecret with Stripe.js or Stripe SDK to complete the payment on your frontend.
Webhook Confirms Payment
When payment succeeds, Stripe sends a webhook to /api/payments/webhook, which updates the purchase status to completed.
The API automatically checks for duplicate purchases. If a user already owns the content, the request will be rejected with a 400 error.
Step 5: Check Payment Status Verify the payment status using the payment intent ID:
curl https://api.vaniykempire.com/api/payments/status/pi_3MtwBwLkdIwHu7ix28a3tqPa \ -H "Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9..."
Response { "purchase" : { "_id" : "65f7b3c8e1234567890abce0" , "user" : "65f7b3c8e1234567890abcde" , "content" : { "_id" : "65f7b3c8e1234567890abcdf" , "title" : "Advanced React Patterns" , "description" : "Master advanced React patterns and best practices" , "type" : "video" , "thumbnailUrl" : "https://res.cloudinary.com/demo/image/upload/v1234567890/thumbnail.jpg" }, "amount" : 29.99 , "status" : "completed" , "stripePaymentIntentId" : "pi_3MtwBwLkdIwHu7ix28a3tqPa" , "purchasedAt" : "2024-03-15T14:22:30.000Z" } }
Step 6: Access Purchased Content Once payment is confirmed, access the content file URL:
curl https://api.vaniykempire.com/api/content/65f7b3c8e1234567890abcdf/access \ -H "Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9..."
Response { "content" : { "_id" : "65f7b3c8e1234567890abcdf" , "title" : "Advanced React Patterns" , "description" : "Master advanced React patterns and best practices" , "type" : "video" , "category" : "65f7b3c8e1234567890abcd0" , "price" : 29.99 , "fileUrl" : "https://res.cloudinary.com/demo/video/upload/v1234567890/react-patterns.mp4" , "thumbnailUrl" : "https://res.cloudinary.com/demo/image/upload/v1234567890/thumbnail.jpg" , "duration" : 3600 , "fileSize" : 1048576000 , "tags" : [ "react" , "javascript" , "frontend" , "advanced" ], "createdBy" : { "_id" : "65f7b3c8e1234567890abcd1" , "name" : "Sarah Johnson" } } }
The /access endpoint verifies that the authenticated user has purchased the content. Attempting to access content without purchasing it will result in a 403 Forbidden error.
Step 7: View Your Purchases Get a list of all content you’ve purchased:
curl https://api.vaniykempire.com/api/content/user/purchases?page= 1 & limit = 10 \ -H "Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9..."
Response { "purchases" : [ { "_id" : "65f7b3c8e1234567890abce0" , "content" : { "_id" : "65f7b3c8e1234567890abcdf" , "title" : "Advanced React Patterns" , "description" : "Master advanced React patterns and best practices" , "type" : "video" , "category" : "65f7b3c8e1234567890abcd0" , "price" : 29.99 , "thumbnailUrl" : "https://res.cloudinary.com/demo/image/upload/v1234567890/thumbnail.jpg" }, "amount" : 29.99 , "status" : "completed" , "purchasedAt" : "2024-03-15T14:22:30.000Z" } ], "totalPages" : 1 , "currentPage" : 1 , "totalPurchases" : 1 }
Next Steps
Authentication Deep Dive Learn about token management, refresh tokens, and session handling
API Reference Explore all available endpoints and parameters
Content API Browse and manage digital content
Webhooks Set up Stripe webhooks for production
Common Issues
401 Unauthorized - Invalid token
This error occurs when your access token has expired or is invalid. Login again to get a fresh token: curl -X POST https://api.vaniykempire.com/api/auth/login \ -H "Content-Type: application/json" \ -d '{"email": "user@example.com", "password": "SecurePassword123!"}'
403 Forbidden - Content not purchased
You’re trying to access content you haven’t purchased. Complete the purchase flow (Steps 4-5) before accessing the content.
400 Bad Request - Already purchased
You’ve already purchased this content. You can access it directly via the /access endpoint without creating a new payment intent.
404 Not Found - Content not found
The content ID doesn’t exist or the content is not published. Use the /api/content endpoint to get a list of available content.
Example: Complete Flow in JavaScript Here’s a complete example that ties everything together:
const API_BASE = 'https://api.vaniykempire.com' ; let accessToken = null ; // 1. Sign up async function signup ( email , password , name ) { const response = await fetch ( ` ${ API_BASE } /api/auth/signup` , { method: 'POST' , headers: { 'Content-Type' : 'application/json' }, body: JSON . stringify ({ email , password , name }) }); const data = await response . json (); accessToken = data . session . access_token ; return data ; } // 2. Browse content async function listContent () { const response = await fetch ( ` ${ API_BASE } /api/content?page=1&limit=10` ); return await response . json (); } // 3. Purchase content async function purchaseContent ( contentId ) { const response = await fetch ( ` ${ API_BASE } /api/payments/create-payment-intent` , { method: 'POST' , headers: { 'Content-Type' : 'application/json' , 'Authorization' : `Bearer ${ accessToken } ` }, body: JSON . stringify ({ contentId }) }); return await response . json (); } // 4. Access purchased content async function accessContent ( contentId ) { const response = await fetch ( ` ${ API_BASE } /api/content/ ${ contentId } /access` , { headers: { 'Authorization' : `Bearer ${ accessToken } ` } }); return await response . json (); } // Usage ( async () => { try { // Create account await signup ( 'user@example.com' , 'SecurePass123!' , 'John Doe' ); // Browse content const { content } = await listContent (); const contentId = content [ 0 ]. _id ; // Purchase (then complete payment with Stripe on frontend) const { clientSecret } = await purchaseContent ( contentId ); // ... process payment with Stripe ... // Access purchased content const { content : purchasedContent } = await accessContent ( contentId ); console . log ( 'File URL:' , purchasedContent . fileUrl ); } catch ( error ) { console . error ( 'Error:' , error ); } })();
This example shows the backend flow. In production, you’ll need to integrate Stripe.js on your frontend to securely collect payment information and confirm the payment intent.