User Management Service

This project is a User Management Service implemented in Golang, designed to handle user registration, authentication, and profile management. The service provides RESTful APIs for user-related functionalities and serves as the authentication and user management component for Adventures app.

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Features

• User registration with secure password storage using bcrypt.
• User login with JWT-based authentication.
• JWT token validation for protected routes.
• Modular architecture for scalability and maintainability.
• Lightweight and fast backend using Golang.

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Directory Structure Breakdown

Top-Level Files

• main.go:

  • The entry point of the application.
  • Initializes the database connection, sets up the routing, and starts the HTTP server.

• go.mod:

  • Declares the module name and lists the dependencies required by the application.

• go.sum:

  • Contains the checksums of the dependencies, ensuring reproducibility and consistency.

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Folders and Their Contents

models/

This folder defines the database schema and models used throughout the application.

• models/user.go:
  • Defines the User struct, which represents the user table in the database.
  • Example:

    type User struct {
        ID             uint   `gorm:"primaryKey"`
        Name           string
        Email          string `gorm:"uniqueIndex"`
        HashedPassword string
    }
    

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controllers/

This folder contains the HTTP handlers (controllers) that process requests and send responses. It connects the API endpoints with the services.

• controllers/user_controller.go:
  • Handles user-related API requests, such as registration, login, and profile retrieval.
  • Example:
    • RegisterUser: Handles user registration.
    • LoginUser: Validates credentials and generates JWTs.

Keeps raw database operations abstracted from the rest of the code.

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middleware/

This folder contains middleware functions used across the application for tasks such as authentication and logging.

• middlewares/auth_middleware.go:
  • Implements middleware to:
    • Validate incoming JWT tokens.
    • Extract user information from the token.
    • Protect routes from unauthorized access.

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routes/

This folder defines the routing for the application, mapping API endpoints to their respective controllers.

• routes/user_routes.go:
  • Registers the user management endpoints (e.g., /register, /login, /profile) and connects them to the user_controller handlers.

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Summary of Responsibilities

Folder/File	Responsibility
main.go	Application entry point, server initialization.
models/	Database schema and models (e.g., User).
controllers/	Handles API requests and responses.
middleware/	Reusable middleware (e.g., JWT validation).
routes/	Maps API endpoints to their respective controllers.
go.mod and go.sum	Dependency management and reproducibility.