signup done

server.js

@@ -1,11 +1,71 @@
-const express = require('express')
-const app = express()
-const port = 3000
+//express js
+var express = require('express');
+var app = express();
+var port = 3000;
 
-app.get('/', (req, res) => {
-  res.send('Hello World!')
-})
+//corse request
+var cors = require('cors')
+app.use(cors())
 
+//enabling json body parse
+app.use(express.json());
+
+//MONGOOSE - requiring library
+const mongoose = require('mongoose');
+
+//auto increment sequence
+var AutoIncrement = require('mongoose-sequence')(mongoose);
+
+//MONGOOSE - connecting to database
+mongoose.connect('mongodb://localhost:27017/pastebin',function(err){
+    if(err){
+        console.log("error occured while connecting to database");
+    }else{
+        console.log("successfully connected to database");
+    }
+});
+
+//users schema
+const UsersSchema = new mongoose.Schema({
+    first_name: String,
+    last_name: String,
+    account_type: String,
+    email: {
+        type: String,
+        unique: true,
+        index: true
+    },
+    password: String
+},{
+    strict:false
+});
+//users model
+const UsersModel = mongoose.model('users', UsersSchema,'users',{versionKey: false});
+
+//users -> signup
+app.post("/signup",(json_data,res)=>{
+    //MONGOOSE - preparing json data for sending
+    const new_signup = new UsersModel({first_name:json_data.body.first_name,
+                                        last_name:json_data.body.last_name,
+                                        account_type:json_data.body.account_type,
+                                        email:json_data.body.email,
+                                        password:json_data.body.password,
+                                    });
+
+    //MONGOOSE - inserting data to database
+    new_signup.save(function (err, data) {
+        if(err){
+            if (err.code && err.code === 11000) {
+                return res.json({status:3,msg:"Account Already Exists : "+json_data.body.email});    
+            }
+            return res.json({status:3,msg:"error occured while insertion "+err});
+        }else{
+            return res.json({status:1,msg:"account created successfully : "+json_data.body.email});
+        }
+    });
+});
+
+//listing express
 app.listen(port, () => {
-  console.log(`Example app listening on port ${port}`)
+    console.log(`Example app listening on port ${port}`)
 })