REST API to GraphQL

backend/app.js

@@ -1,39 +1,51 @@
-import 'dotenv/config'
-import express from 'express'
-import cors from 'cors'
-import ipfsRoutes from './src/routes/ipfs.js'
-import nftRoutes from './src/routes/nfts.js'
+import 'dotenv/config';
+import express from 'express';
+import cors from 'cors';
+import { graphqlHTTP } from 'express-graphql';
+import { schema } from './src/graphql/schema.js'; // Import GraphQL schema
+import { graphqlUploadExpress } from 'graphql-upload';
 
-const app = express()
-const port = process.env.PORT || 3000
+const app = express();
+const port = process.env.PORT || 3000;
 
-app.use(express.json())
+// Middleware to parse JSON
+app.use(express.json());
 
-// Allow all origins for now to simplify the frontend setup
+// Enable file uploads for GraphQL
+app.use(graphqlUploadExpress());
+
+// Allow all origins for now to simplify frontend setup
 app.use(
   cors({
     origin: '*',
-    methods: ['GET', 'POST', 'PUT', 'DELETE', 'OPTIONS'],
+    methods: ['GET', 'POST', 'OPTIONS'],
     allowedHeaders: ['Content-Type', 'Authorization'],
-
   })
-)
+);
 
-app.use('/ipfs', ipfsRoutes)
-app.use('/nfts', nftRoutes)
+// Health check endpoint
+app.get('/health', (req, res) => {
+  res.status(200).json({ status: 'ok' });
+});
 
-// Error handling middleware to ensure CORS headers are sent even on errors
+// Set up the GraphQL server
+app.use(
+  '/graphql',
+  graphqlHTTP({
+    schema, // GraphQL schema imported from the project
+    graphiql: process.env.NODE_ENV !== 'production', // Enable GraphiQL in development
+  })
+);
+
+// Error handling middleware to ensure consistent error responses
 app.use((err, req, res, next) => {
-  res.header('Access-Control-Allow-Origin', '*')
-  res.status(err.status || 500).json({ error: err.message })
-})
-// Basic health check endpoint
-app.get('/health', (req, res) => {
-  res.status(200).json({ status: 'ok' })
-})
+  res.header('Access-Control-Allow-Origin', '*');
+  res.status(err.status || 500).json({ error: err.message });
+});
 
+// Start the server
 app.listen(port, () => {
-  console.log(`Server is running on port ${port}`)
-})
+  console.log(`GraphQL server is running on http://localhost:${port}/graphql`);
+});
 
-export default app
+export default app;

backend/package.json

@@ -11,9 +11,11 @@
   "license": "ISC",
   "dependencies": {
     "cors": "^2.8.5",
-    "dotenv": "^16.4.5",
+    "dotenv": "^16.4.7",
     "ethers": "^6.13.4",
     "express": "^4.21.1",
+    "express-graphql": "^0.12.0",
+    "graphql-upload": "^11.0.0",
     "multer": "^1.4.5-lts.1",
     "nodemon": "^3.1.7",
     "pako": "^2.1.0",