Feat/crud

[ummarig]

Summary of Implementation

I've successfully created a comprehensive user profile module that meets all the specified requirements:

✅ Implemented Endpoints

All required endpoints are available at /profiles:

• GET /profiles/:id - Retrieve a user profile
• POST /profiles - Create a new user profile
• PUT /profiles/:id - Update an existing profile
• DELETE /profiles/:id - Delete a profile
• POST /profiles/:id/avatar - Upload profile avatar
• DELETE /profiles/:id/avatar - Remove profile avatar

✅ Avatar Upload & Security Features

• File type validation: Accepts only JPEG, PNG, WebP, and GIF
• Size validation: Configurable maximum file size (default 5MB)
• Magic number verification: Prevents file spoofing attacks
• Dual storage support: Works with both local filesystem and AWS S3
• CDN ready: S3 integration supports CloudFront or other CDNs
• Secure file naming: Uses UUIDs to prevent collisions and path traversal

✅ Profile Data & Privacy

• Includes all required fields: displayName, bio, email (read-only), and visibility settings
• Email is read-only through the update API - cannot be modified after creation
• Comprehensive visibility controls:
  • public: Visible to all authenticated users
  • private: Only visible to owner and admins
  • followers_only: For future follower system implementation
• Granular privacy settings: Users can choose to show/hide email, bio, and activity

✅ Permission System

• Users can only modify their own profiles
• Admins have full access to modify/delete any profile
• Automatic field filtering based on permissions and privacy settings
• Email is only exposed to the profile owner, admins, or if explicitly made public

✅ Testing & Documentation

• Comprehensive unit tests for CRUD operations and file validation
• Complete documentation in PROFILES_API.md covering:
  • API contract with request/response examples
  • Storage configuration (local and S3)
  • Security features explanation
  • Environment variables setup
  • Integration instructions

✅ Codebase Integration

The module follows the existing NestJS patterns in the codebase, uses TypeORM for database operations, and integrates seamlessly with the existing authentication system (JWT guards, current user decorator). The module is fully imported into the main AppModule and ready to use.

closes #372