/devmun-shop-api

Primary LanguageTypeScript

AuthService Code Analysis

Overview

The AuthService class is a comprehensive authentication and user management service for a Node.js/Express/Mongoose-based application. It provides features for user registration, authentication, session management, profile updates, password/email changes, role-based access control, and more.

1. Key Features

  • User Authentication Flows

    • Signup with email verification (OTP).
    • Signin with password validation.
    • Google OAuth integration.
    • JWT-based access and refresh tokens.

  • Session Management

    • Secure, HTTP-only cookies for tokens.
    • Session storage and validation in both MongoDB and Redis.
    • Session invalidation on password/email changes and signout.

  • Profile and Settings

    • Profile retrieval and selective updates.
    • Avatar upload with Cloudinary.
    • Address and feedback management.

  • Account Security

    • Password hashing and validation.
    • Verification for sensitive operations (email/password changes).
    • Role-based access control (restrictTo middleware).

  • Admin/User Utilities

    • Paginated user fetching with query, filter, sort, and field selection.

2. Security Practices

  • Sensitive Data Handling

    • Passwords never returned in responses.
    • Sessions protected with signed cookies and HMAC hashing.
    • Sessions and tokens invalidated when credentials are changed.

  • Validation/Verification

    • OTP for signup and email update.
    • Password validation for password/email change.
    • Role checks for restricted endpoints.

  • Session Storage

    • Sessions stored in Redis (for fast validation) and MongoDB (for persistence).

  • Email Operations

    • Secure email operations for verification and updates.

3. Extensibility

  • Generic User Model
    • AuthService<T extends IUser>: Can be reused for different user schemas.
  • Utilizes Utility Classes
    • Utility functions (OTP, JWT, encryption) are abstracted for maintainability.
  • Configurable Providers
    • Swappable providers for Redis, Cloudinary, config, and email.

4. Code Organization

Functionality Method Name(s)
Signup/Auth signup, signin, googleAuth
Token/Session createSession, refreshToken, validateToken, requireAuth, signout, signoutSession, signoutAllSession
Profile Management getProfile, updateProfile, getProfileFields, updateSettings
Security Updates updatePassword, requestEmailUpdate, updateEmail
User Data getUsers, updateAddresses, deleteAddresses, updateFeedback, getSessions
Access Control restrictTo

5. Best Practices & Recommendations

  • Async Error Handling: All methods use a catchAsync utility for unified error management.
  • Separation of Concerns: Service logic is separated from utility functions and configuration.
  • Scalability: Bulk user operations are paginated and filterable.
  • Security: Session invalidation, RBAC, token integrity, and consistent validation.

Potential Improvements

  • Add Rate Limiting: Protect endpoints like signup and signin.
  • Enhanced Logging: Integrate more granular logging for security events.
  • Input Validation: Ensure all inputs are validated (ideally in route middleware).
  • Testing: Add comprehensive tests for all critical flows.

6. Data Flows

graph TD
  A[User] -->|Signup| B(AuthService.signup)
  B -->|Verify OTP| C(AuthService.verifyEmail)
  A -->|Signin| D(AuthService.signin)
  D --> E[Session Created]
  A -->|Google OAuth| F(AuthService.googleAuth)
  A -->|Change Password| G(AuthService.updatePassword)
  A -->|Change Email| H(AuthService.requestEmailUpdate)
  H -->|Verify Link| I(AuthService.updateEmail)
  A -->|Profile Update| J(AuthService.updateProfile)
  A -->|Signout| K(AuthService.signout)
  A -->|Get Sessions| L(AuthService.getSessions)
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7. Security Summary Table

Feature MongoDB Redis Cloudinary Email Security
Signup/Verify ✓ - - ✓ ✓
Signin/Session ✓ ✓ - - ✓
Google Auth ✓ ✓ - - ✓
Password Reset/Change ✓ ✓ - - ✓
Email Update ✓ ✓ - ✓ ✓
Profile Update ✓ ✓ ✓ - ✓
Feedback/Addresses ✓ - - - ✓
RBAC - - - - ✓

8. Conclusion

The AuthService class is a robust foundation for authentication and user management in a modern Node.js application. It follows best practices for security, extensibility, and maintainability, and is designed to scale and adapt as requirements evolve.