SkillUp - Online Course Selling Platform API

This is a REST API for an online course-selling platform developed using Java and Spring Boot. It allows users to browse, purchase, and manage courses, while providing admins and instructors with tools to manage users and course content efficiently. Role-based authentication and authorization have been implemented using Spring Security to ensure that only authorized users can access specific endpoints, with separate permissions for admins, instructors, and students.

Technology Stack

• Backend: Java, Spring Boot, Spring Security.
• Testing: Junit5 and Mockito
• Documentation: Well documeted with Swagger (refer the pictures below)
• Persistence: JPA / Hibernate, MySQL
• Validation: Bean Validation (Jakarta Validation API)

Features

• Admin Dashboard

  • Manage user accounts (convert students to instructors, delete users)
  • Handle course creation, updates, and deletions

• Instructor Functionality

  • Create, update, and delete courses
  • View all available courses

• Student Functionality

  • Browse all available courses
  • Purchase courses
  • View purchased courses

• Authentication

  • Register as a Student, Instructor, or Admin
  • Login and Logout
  • Fetch current logged-in user details
  • Role-based access control enforced by Spring Security

• Reliability

  • Custom exception handling
  • Comprehensive unit testing

Swagger Documentation

API Endpoints

Instructor API

Method	Endpoint	Description
PUT	/instructor/courses/update/{courseId}	Update Existing Course
POST	/instructor/courses/create	Create a New Course
GET	/instructor/courses/all	Get All Courses
DELETE	/instructor/courses/delete/{courseId}	Delete Existing Course

Student API

Method	Endpoint	Description
POST	/student/purchaseCourses/{courseId}	Purchase a Course
GET	/student/purchasedCourses	Get All Purchased Courses
GET	/student/courses/all	View All Available Courses

Admin API

Method	Endpoint	Description
PUT	/admin/{userId}	Convert Student to Instructor
DELETE	/admin/{userId}	Delete Student/Instructor
GET	/admin/users	Get All Users

Authentication API

Method	Endpoint	Description
POST	/auth/register/student	Register as New Student
POST	/auth/register/instructor	Register as New Instructor
POST	/auth/register/admin	Register as New Admin
POST	/auth/login	Login with Email and Password
POST	/auth/logout	Logout Current Logged-in User
GET	/auth/session-user	Get Current Logged-in User