Build a Room Booking API with Spring Boot

Problem/Feature Description

A coworking space needs a REST API for managing room bookings. The API is built with Spring Boot and Java. An Angular frontend running on a separate domain will consume it. Users must register and log in to make bookings.

The API needs the following endpoints:

• POST /api/auth/register -- register a new user (accepts name, email, password)
• POST /api/auth/login -- authenticate and return user info
• GET /api/rooms -- list all available rooms
• POST /api/bookings -- create a booking (accepts roomId, date, startTime, endTime)
• GET /api/bookings/mine -- list the current user's bookings
• DELETE /api/bookings/{id} -- cancel a booking (only the booking owner or admin)
• GET /api/admin/bookings -- list all bookings (admin only)

Use an in-memory data store. Rooms have id, name, capacity. Bookings have id, roomId, userId, date, startTime, endTime, createdAt. Users have id, name, email, password, role (USER/ADMIN).

Output Specification

Produce:

• SecurityConfig.java -- Spring Security configuration
• AuthController.java -- Registration and login endpoints
• BookingController.java -- Booking CRUD endpoints
• RoomController.java -- Room listing endpoint
• UserService.java -- User registration and authentication logic
• pom.xml -- With all required dependencies