Dealer_Onboarding_Backend/README.md

# Royal Enfield Dealership Onboarding System - Backend

## 🚀 Quick Start

### 1. Install Dependencies
```bash
npm install
```

### 2. Setup Database
Create PostgreSQL database:
```bash
createdb royal_enfield_onboarding
```

### 3. Configure Environment
```bash
cp .env.example .env
# Edit .env with your database credentials and other settings
```

### 4. Run Migrations
```bash
npm run migrate
```

### 5. Start Server
```bash
# Development
npm run dev

# Production
npm start
```

## 📁 Complete File Structure

This backend requires the following files to be fully functional. Files marked with ✅ are already created. Files marked with ⚠️ need to be created by your AI assistant:

### Root Files
- ✅ `package.json`
- ✅ `.env.example`
- ✅ `server.js`
- ✅ `README.md`
- ✅ `back.md` (Comprehensive documentation)
- ⚠️ `.gitignore`

### Config Files (/config)
- ✅ `database.js`
- ✅ `email.js`
- ✅ `constants.js`

### Models (/models)
- ✅ `index.js`
- ✅ `User.js`
- ✅ `Outlet.js`
- ⚠️ `Application.js` - Dealer application model
- ⚠️ `Resignation.js` - Resignation request model
- ⚠️ `ConstitutionalChange.js` - Constitutional change model
- ⚠️ `RelocationRequest.js` - Relocation request model
- ⚠️ `Worknote.js` - Discussion worknotes model
- ⚠️ `Document.js` - Document uploads model
- ⚠️ `AuditLog.js` - Audit trail model
- ⚠️ `FinancePayment.js` - Finance payment tracking
- ⚠️ `FnF.js` - Full & Final settlement
- ⚠️ `Region.js` - Regional hierarchy
- ⚠️ `Zone.js` - Zone model

### Controllers (/controllers)
- ⚠️ `authController.js` - Login, logout, token refresh
- ⚠️ `userController.js` - User management
- ⚠️ `applicationController.js` - Dealer applications
- ⚠️ `resignationController.js` - Resignation workflow
- ⚠️ `constitutionalController.js` - Constitutional changes
- ⚠️ `relocationController.js` - Relocation requests
- ⚠️ `outletController.js` - Outlet management
- ⚠️ `worknoteController.js` - Discussion platform
- ⚠️ `financeController.js` - Finance operations
- ⚠️ `masterController.js` - Master configuration
- ⚠️ `dashboardController.js` - Dashboard statistics

### Routes (/routes)
- ⚠️ `auth.js` - Authentication routes
- ⚠️ `users.js` - User routes
- ⚠️ `applications.js` - Application routes
- ⚠️ `resignations.js` - Resignation routes
- ⚠️ `constitutional.js` - Constitutional change routes
- ⚠️ `relocations.js` - Relocation routes
- ⚠️ `outlets.js` - Outlet routes
- ⚠️ `worknotes.js` - Worknote routes
- ⚠️ `finance.js` - Finance routes
- ⚠️ `master.js` - Master configuration routes
- ⚠️ `dashboard.js` - Dashboard routes

### Middleware (/middleware)
- ⚠️ `auth.js` - JWT verification middleware
- ⚠️ `roleCheck.js` - Role-based access control
- ⚠️ `upload.js` - File upload middleware
- ⚠️ `validation.js` - Input validation
- ⚠️ `errorHandler.js` - Global error handler

### Utilities (/utils)
- ⚠️ `emailTemplates.js` - Email HTML templates
- ⚠️ `emailService.js` - Email sending utilities
- ⚠️ `logger.js` - Winston logger
- ⚠️ `helpers.js` - Helper functions

### Migrations (/migrations)
- ⚠️ `initial-setup.js` - Initial database schema and seed data

## 📝 Instructions for AI Assistant

**To complete this backend, your AI IDE should:**

1. Read the `back.md` file for complete architecture understanding
2. Create all remaining model files based on the database schema in `back.md`
3. Create all controller files with business logic as described in API endpoints
4. Create all route files mapping HTTP requests to controllers
5. Create middleware files for authentication, authorization, and validation
6. Create utility files for email, logging, and helpers
7. Create migration file to set up initial database schema and seed data

**Each file should follow these patterns:**

### Model Pattern:
```javascript
const { CONSTANTS } = require('../config/constants');

module.exports = (sequelize, DataTypes) => {
  const ModelName = sequelize.define('ModelName', {
    // Fields defined in back.md schema
  });

  ModelName.associate = (models) => {
    // Relationships defined in back.md
  };

  return ModelName;
};
```

### Controller Pattern:
```javascript
const db = require('../models');
const logger = require('../utils/logger');

exports.functionName = async (req, res, next) => {
  try {
    // Business logic
    res.json({ success: true, data: result });
  } catch (error) {
    logger.error('Error:', error);
    next(error);
  }
};
```

### Route Pattern:
```javascript
const express = require('express');
const router = express.Router();
const controller = require('../controllers/controllerName');
const auth = require('../middleware/auth');
const roleCheck = require('../middleware/roleCheck');

router.get('/', auth, roleCheck(['Role1', 'Role2']), controller.list);
router.post('/', auth, roleCheck(['Role1']), controller.create);

module.exports = router;
```

## 🔌 API Documentation

Full API documentation is available in `back.md` including:
- All endpoint URLs
- Request/Response formats
- Authentication requirements
- Role permissions
- Example payloads

## 🗄️ Database Schema

Complete database schema with all tables, columns, relationships, and indexes is documented in `back.md`.

## 🔐 Security

The backend implements:
- JWT authentication
- Role-based access control
- Password hashing with bcrypt
- Input validation
- SQL injection prevention
- Rate limiting
- CORS protection
- Security headers (Helmet)

## 📧 Email Notifications

Email templates and triggers are defined in `utils/emailTemplates.js` and `utils/emailService.js`.

## 📊 Logging

Winston logger is configured in `utils/logger.js` with multiple transports.

## 🧪 Testing

Run tests with:
```bash
npm test
npm run test:coverage
```

## 🚢 Deployment

See `back.md` for detailed deployment instructions for:
- Railway
- Render
- AWS/DigitalOcean
- Docker

## 📞 Support

Refer to `back.md` for:
- Troubleshooting common issues
- Database backup/restore
- Maintenance tasks
- Complete architecture documentation

---

**Next Steps:**
1. Have your AI assistant read `back.md`
2. Ask it to create all remaining files following the patterns above
3. Test API endpoints
4. Connect frontend to backend
5. Deploy to production

Good luck! 🚀