Merge pull request #42 from CS3219-AY2425S1/y-websocket-server

add server backend

peerprep/backend/collab-service/.env

@@ -0,0 +1,6 @@
+DB_CLOUD_URI=mongodb+srv://default:yN2zzXYyZz9CTwsB@peerprep-collab-service.c0em2.mongodb.net/
+DB_LOCAL_URI=mongodb://127.0.0.1:27017/peerprepCollabServiceDB
+PORT=1234
+
+# Will use cloud MongoDB Atlas database
+ENV=PROD

peerprep/backend/collab-service/Dockerfile

@@ -0,0 +1,8 @@
+FROM node:22-alpine
+
+COPY package.json package-lock.json ./
+RUN npm install
+
+COPY . .
+
+CMD ["npm", "start"]

peerprep/backend/collab-service/config/db.js

@@ -0,0 +1,22 @@
+const mongoose = require('mongoose');
+const dotenv = require('dotenv');
+
+dotenv.config();
+
+const connectDB = async () => {
+  try {
+    const uri = process.env.ENV === 'PROD' ? process.env.DB_CLOUD_URI : process.env.DB_LOCAL_URI;
+
+    if (!uri) {
+      throw new Error("MongoDB URI is not defined in environment variables");
+    }
+
+    await mongoose.connect(uri);
+    console.log("MongoDB Connected!");
+  } catch (error) {
+    console.error(`Error connecting to MongoDB: ${error.message}`);
+    process.exit(1);
+  }
+};
+
+module.exports = connectDB;