Backend complete

backend/.gitignore

@@ -1 +1,2 @@
 node_modules
+.env

backend/config.js

@@ -0,0 +1,2 @@
+
+

backend/db.js

@@ -0,0 +1,50 @@
+const mongoose = require("mongoose");
+require('dotenv').config()
+const dburl  = process.env.dburl
+
+mongoose.connect(
+dburl
+);
+
+const userschema = new mongoose.Schema({
+  username: {
+    type: String,
+    required: true,
+    unique: true,
+    trim: true,
+    lowercase: true,
+    minLength: 3,
+    maxLength: 30,
+  },
+  password: {
+    type: String,
+    required: true,
+    minLength: 6,
+  },
+  firstname: {
+    type: String,
+    required: true,
+    trim: true,
+    maxLength: 50,
+  },
+  lastname: { type: String, required: true, trim: true, maxLength: 50 },
+});
+
+const accschema = new mongoose.Schema({
+  userId:{
+    type:mongoose.Types.ObjectId,
+    ref:"User",
+    required:true
+  },
+  balance:{
+    type:Number,
+    required:true
+  }
+})
+
+const User = mongoose.model("User", userschema);
+const Balance = mongoose.model("Balance",accschema)
+module.exports = {
+  User,
+  Balance
+};

backend/index.js

@@ -1,3 +1,36 @@
 const express = require("express");
+const mainRouter = require("./routes/index_routes");
+const cors = require("cors")
+const authvalidator = require("./middlewere")
+const app = express();
+app.use(express.json());
+app.use(cors())
 
+// Use the main router
+app.use("/app/v1", mainRouter);
 
+// Root route
+app.get("/", (req, res) => {
+  res.json({
+    msg: "Hey there, how are you!",
+  });
+});
+
+app.post("/protected",authvalidator,(req,res)=>{
+  res.json({
+    message:"this is protected site"
+  })
+})
+
+
+app.use((err,req,res,next)=>{
+  console.log("this is your err : " +err)
+  res.send("something went wrong")
+})
+
+
+
+// Start the server
+app.listen(3000, () => {
+  console.log("App is live on http://localhost:3000");
+});

backend/middlewere.js

@@ -0,0 +1,24 @@
+const jwtpass = process.env.JWT_SEC 
+const jwt = require('jsonwebtoken')
+
+
+
+const authvalidator = (req,res,next)=>{
+    const authheader = req.headers.authorization
+    if(!authheader || !authheader.startsWith('Bearer ')){
+        return res.status(403).json({})
+    }
+    const token = authheader.split(" ")[1]
+    try{
+        const decode = jwt.verify(token,jwtpass)
+        req.userId = decode.userId
+        next()
+    }
+    catch(e){
+        return res.status(403).json({})
+    }
+
+
+}
+
+module.exports = authvalidator