Back end

.gitignore

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+# Logs
+front-end/logs
+front-end/*.log
+front-end/npm-debug.log*
+front-end/yarn-debug.log*
+front-end/yarn-error.log*
+front-end/pnpm-debug.log*
+front-end/lerna-debug.log*
+
+front-end/node_modules
+front-end/dist
+front-end/dist-ssr
+front-end/*.local
+
+# Editor directories and files
+front-end/.vscode/*
+front-end/!.vscode/extensions.json
+front-end/.idea
+front-end/.DS_Store
+front-end/*.suo
+front-end/*.ntvs*
+front-end/*.njsproj
+front-end/*.sln
+front-end/*.sw?
+
+# server files
+back-end/node_modules
+bacl-end/package-lock.json

back-end/helpers/constants.js

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+const constants = {
+    USER_API : 'http://localhost:4000/api/user'
+}
+
+export default constants;

back-end/helpers/user-helper.js

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+const { Products } = require('../model/model');
+
+module.exports = {
+    randomItems: () => {
+       return new Promise(async (resolve,reject) => {
+        const products = await Products.find();
+
+        arr = [];
+
+        for (let i = 0; i < 4; i++) {
+            product = products[Math.floor(Math.random() * products.length)];
+            if (!arr.some(item => item === product))
+                arr.push(product);
+        }
+
+        resolve(arr);
+       })
+    }
+}

back-end/model/model.js

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+const mongoose = require('mongoose');
+const Schema = mongoose.Schema;
+
+const UserSchema = new Schema({
+    username: {
+        type: String,
+        required: [true, 'username field is required']
+    },
+    email: {
+        type: String,
+        required: [true, 'Email field is required']
+    },
+    password:{
+        type: String,
+        required: [true, 'password field is required']
+    },
+    date : {
+        type: Date,
+        default : Date.now
+    }
+});
+
+const contactSchema = new Schema({
+    _id: { 
+        type: Schema.Types.ObjectId, auto: true 
+    },
+    name : {
+        type: String,
+        required: [true, 'name field is required']
+    },
+    phone : {
+        type: String,
+        required: [true, 'phone_no field is required']
+    },
+    email : {
+        type: String,
+        required: [true, 'email field is required']
+    },
+    address : {
+        type: String,
+        required: [true, 'address field is required']
+    }
+
+})
+
+const userContacts = new Schema({
+    contacts: [contactSchema] // Array to store contacts
+  });
+
+const User = mongoose.model('users',UserSchema);
+const Contact = mongoose.model('contacts',userContacts);
+
+module.exports = {
+    User,
+    Contact
+};