🏥 Doctor Appointment App

A secure backend REST API built using Java and Spring Boot, designed for managing doctor appointments. Patients can book appointments, while doctors and admins can view statistics and manage appointment data. The app uses JWT (JSON Web Token) authentication to protect and restrict access based on user roles.

---

🚀 Features

• 📅 Appointment Scheduling: Patients can book, view, and cancel appointments.
• 👨‍⚕️ Doctor Portal: Doctors can access their schedule and statistics.
• 📊 Admin Dashboard: Admins can view global statistics and monitor clinic performance.
• 🔐 JWT Authentication: Secured login system with token-based authentication.
• ⚙️ Role-based Access Control: Separate privileges for patients, doctors, and admins.
• 🏥 Clinic and Working Hours: Doctors are associated with clinics and have defined working hours.

---

🛠️ Technologies Used

• Java 17+
• Spring Boot
• Spring Security + JWT
• Spring Data JPA
• Hibernate
• MySQL
• Lombok
• Swagger/OpenAPI (for API docs)
• Postman (for manual testing)

---

🔐 Authentication & Authorization

🔑 JWT Auth Flow

1. Login Endpoint:
   POST /api/user/login
   Accepts username and password, returns a JWT token.

2. Register Endpoint (optional):
   POST /api/user/register
   Used to register new users with roles like USER, DOCTOR, or ADMIN.

3. Token Usage:
   Add the JWT token to the Authorization header: Authorization: Bearer <your_token_here>

4. Role-Based Access:

• USER: Can book and view own appointments.
• DOCTOR: Can view their own appointments and working hours.
• ADMIN: Can access statistics and manage clinics/doctors.