https://github.com/prayag2003/nodejs-backend-assessment

Complete Backend for the assessment.
https://github.com/prayag2003/nodejs-backend-assessment

express multer neondb postgresql

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Complete Backend for the assessment.

• Host: GitHub
• URL: https://github.com/prayag2003/nodejs-backend-assessment
• Owner: Prayag2003
• Created: 2024-04-04T09:28:29.000Z (10 months ago)
• Default Branch: main
• Last Pushed: 2024-04-05T12:47:30.000Z (10 months ago)
• Last Synced: 2024-04-05T13:46:11.993Z (10 months ago)
• Topics: express, multer, neondb, postgresql
• Language: JavaScript
• Homepage:
• Size: 151 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# NodeJS Backend Assessment

### NEON DB Connection

-   Initialization: The connectDB function initializes the database connection. It creates a connection pool utilizing the connection string retrieved from the environment variables.

-   Connection Pool: Utilizing a connection pool enables the reutilization of multiple connections, thereby enhancing efficiency and performance.

-   Error Handling: Error handling mechanisms are incorporated to log any connection errors to the console. If the connection fails, the process is terminated gracefully.

-   Export: The module exports the pool and connectDB functions, enabling other components of the application to access the database connection.

![alt text](image-1.png)

## Database Tables

-   **Course Table**

    -   Stores information about courses available on the platform.

    -   Columns:

        -   `id`: Auto-incrementing unique identifier for each course.

        -   `title`: Title of the course.

        -   `category`: Category of the course.

        -   `level`: Level of difficulty for the course.

        -   `description`: Description of the course.

-   **Enrollment Table**

    -   Tracks user enrollments in courses.

    -   Columns:

        -   `id`: Auto-incrementing unique identifier for each enrollment.

        -   `user_id`: Foreign key referencing the user enrolled in the course.

        -   `course_id`: Foreign key referencing the course the user is enrolled in.

        -   `enrollment_date`: Timestamp indicating when the enrollment was made.

-   **User Table**

    -   Stores information about users registered on the platform.

    -   Columns:

        -   `id`: Auto-incrementing unique identifier for each user.

        -   `name`: Name of the user.

        -   `email`: Email address of the user.

        -   `password`: Encrypted password of the user.

        -   `refresh_token`: Refresh token for JWT authentication.

```txt

PORT=3000

DATABASE_URL=

CLOUDINARY_CLOUD_NAME=

CLOUDINARY_API_KEY=

CLOUDINARY_API_SECRET=

ACCESS_TOKEN_SECRET=

REFRESH_TOKEN_SECRET=

RESEND_API_KEY=

```

```bash

    npm run dev

```

![alt text](image.png)

## Middleware

-   **Authentication Middleware**

    -   Handles user authentication using JWT tokens.

    -   Verifies the JWT token provided in the request headers.

    -   Fetches user details from the database based on the token.

    -   Sets the `req.user` object for authenticated routes.

## Controllers

-   **Course Controller**

    -   Manages CRUD operations for courses.

    -   Implements logic for fetching, creating, updating, and deleting courses.

    -   Handles requests related to courses from the client.

-   **User Controller**

    -   Manages user-related operations such as registration and profile management.

    -   Implements logic for user registration, fetching user profiles, and updating user profiles.

    -   Handles requests related to user management.

-   **Superadmin Controller**

    -   Manages operations accessible only to superadmin users.

    -   Implements logic for promoting users to superadmin status and managing courses.

    -   Handles requests for superadmin-specific actions.

## Routes

-   **User Routes**

    -   Define routes for user-related operations.

    -   Includes endpoints for user registration, profile fetching, and profile updating.

    -   Utilizes the authentication middleware for authentication.

-   **Superadmin Routes**

    -   Define routes for superadmin-specific actions.

    -   Includes endpoints for promoting users to superadmin status and managing courses.

    -   Utilizes the authentication middleware for superadmin authorization.

-   **Enrollment Routes**

    -   Define routes for managing course enrollments.

    -   Includes endpoints for fetching enrolled courses for users and enrolling users in courses.