Booking System API

A comprehensive backend solution for managing bookings and reservations with a focus on security, scalability, and developer experience.

Architecture Highlights

This API implements a clean, modular architecture with:

• TypeScript for type safety and improved developer experience
• Express.js for robust HTTP request handling
• JWT Authentication for secure user sessions
• MongoDB for flexible data storage
• Middleware Pipeline for request validation and error handling

Key Features

Authentication & Authorization

• Secure JWT-based authentication flow
• Role-based access control (Admin, User)
• Token refresh mechanism to maintain sessions

Booking Management

• Create, read, update, and delete bookings
• Availability checking to prevent double-bookings
• Filtering and pagination for booking queries
• Status tracking (pending, confirmed, completed, cancelled)

User Management

• User registration and profile management
• Admin dashboard for user oversight
• Activity logging for audit trails

Technical Implementation

The codebase follows best practices including:

// Example booking controller with validation
export const createBooking = async (req: Request, res: Response) => {
  try {
    const { userId, resourceId, startTime, endTime } = req.body;
    
    // Check for availability
    const isAvailable = await checkAvailability(resourceId, startTime, endTime);
    if (!isAvailable) {
      return res.status(409).json({ 
        success: false, 
        message: "Resource not available for requested time slot" 
      });
    }
    
    // Create booking
    const newBooking = await Booking.create({
      userId,
      resourceId,
      startTime: new Date(startTime),
      endTime: new Date(endTime),
      status: "confirmed"
    });
    
    return res.status(201).json({
      success: true,
      data: newBooking
    });
  } catch (error) {
    return res.status(500).json({
      success: false,
      message: "Failed to create booking",
      error: error.message
    });
  }
};