eCommerce Application

Overview

This eCommerce application is a robust, full-featured platform designed to handle various aspects of online shopping, including user management, product handling, order processing, and more. Built with a focus on solid architecture, extensive error handling, and a well-defined role-based access system, the application provides a seamless shopping experience and administrative capabilities.

Features

User Management

• User Registration & Authentication: Secure user registration and login using JWT tokens. Email verification and password resets are handled via nodemailer.
• Admin Management: Admins can manage user roles, view applications, and handle approvals/rejections. Admin actions are logged for audit purposes.
• User Deletion: Users can be deleted, and associated data (categories, brands, products, wishlists, carts, and reviews) are also removed.

Product Management

• CRUD Operations: Full management of products, categories, and subcategories.
• Stock Management: Automatic stock updates based on user actions (orders and cancellations).
• Brands & Coupons: Manage product brands and apply coupons.

Order Management

• Order Creation & Processing: Users can place orders, which are processed and tracked. Payment integration with Stripe.
• Order Cancellation: Users can cancel orders under specific conditions. Stock and coupon usage are updated accordingly.
• Order Receipts: Generate and manage invoices. Invoices are stored in Cloudinary and referenced in the database for tax and accounting purposes.

Notifications

• Email Notifications: Notifications for user registration, OTPs, password resets, and order details with attached invoices.

Validation & Error Handling

• Validation: Comprehensive validation using Joi for all incoming data (body, params, query).
• Error Handling: Robust error handling across the application using custom error classes and middleware.

Role-Based Access Control

• System Roles: Defined roles for users, admins, and other system roles with specific permissions.

API Features

• Pagination & Filtering: APIs support pagination and filtering for managing large datasets like orders and receipts.
• Webhook Integration: Stripe webhooks handle payment events and order processing.

Architectural Design

• SOLID Principles: The application follows SOLID principles to ensure a clean, maintainable, and scalable codebase.
• Separation of Concerns: Initialization code is separated into initApp.js, keeping index.js focused on application startup.

Technologies Used

• Backend: Node.js, Express.js
• Database: MongoDB (with Mongoose for ORM)
• Authentication: JWT
• Payment Gateway: Stripe
• File Storage: Cloudinary
• Email Service: Nodemailer
• Validation: Joi
• File Handling: Multer
• Utilities: Nanoid for unique IDs, PDFKit for generating invoices

Live Demo

Check out the live demo of the application: Live Demo