Go-Authentication-JWT

A simple Go application that demonstrates user authentication using JWT (JSON Web Tokens).

Features

• User Signup: Allows new users to register.
• User Login: Authenticates users and provides a JWT token.
• Token Validation: Validates the provided JWT token.

Setup and Initialization

1. Environment Variables: Ensure you have a .env file with the necessary environment variables. The application uses godotenv to load these variables.

2. Database Connection: The application connects to a PostgreSQL database. The connection string is fetched from the environment variable DB.

3. Database Synchronization: The application uses GORM for ORM and automatically migrates the user model to the database.

Endpoints

• Signup: POST /signup

  • Payload:

    {
      "Email": "example@email.com",
      "Password": "your_password"
    }

• Login: POST /login

  • Payload:

    {
      "Email": "example@email.com",
      "Password": "your_password"
    }

  • Response: Returns a JWT token.

• Validate: GET /validate

  • Requires JWT token in the Authorization cookie. Validates the token and returns the associated user.

Middleware

• RequireAuth: This middleware checks for the Authorization cookie in the request, decodes the JWT token, validates it, and attaches the associated user to the request.

Models

• User Model: Represents a user with fields Email and Password. The email is unique for each user.