Month 1: Foundation Setup - Detailed Roadmap

Week 1: Project Initialization
Create Git repositories for all components
Set up automated testing and deployment pipeline
Initialize Express.js project with TypeScript
Create domain-driven folder structure
Install and configure essential packages
Week 2: Database & Configuration
Configure MongoDB connection with Mongoose
Set up .env files and configuration system
Configure logging, CORS, body parsing middleware
Set up JWT authentication skeleton
Implement feature flag configuration system
Week 3: Core Data Models
Admin, Vendor, Customer schemas with validation
Product schema with variant support & relationships
Hierarchical category structure with nesting
Warehouse schema with location data
Basic inventory tracking with quantity & location
Week 4: Basic APIs
Implement standard CRUD for all models
Admin user creation and basic authentication
Implement request validation middleware
Set up global error handling middleware
Configure Swagger/OpenAPI documentation

Feature Flag System Focus

Configurable platform capabilities including toggle between single-vendor and multi-vendor modes

Implemented as database-driven configuration with admin interface for real-time changes

Technical Implementation Details

• Version Control: GitHub repositories with branch protection and PR templates
• CI/CD: GitHub Actions with automated testing, linting, and staging deployment
• Node.js Stack: Express.js with TypeScript, ESLint, and Prettier configuration
• Database: MongoDB with Mongoose ODM, schema validation, and indexing
• Authentication: JWT implementation with refresh tokens and role-based access control

Month 1 Deliverables

• Fully configured development environment with CI/CD pipeline
• Core data models with MongoDB schemas and validation
• Authentication framework with role-based permissions
• Basic CRUD API endpoints for all core models
• Request validation and error handling middleware
• Feature flag system for configurable platform capabilities

Key Technologies & Libraries

Node.js / Express
TypeScript
MongoDB / Mongoose
JSON Web Tokens
Express Validator
Winston Logger
Swagger UI
GitHub Actions