Fix/group chat error message

.env.sample

@@ -11,7 +11,7 @@ REFRESH_TOKEN_SECRET=CMdDNtowK7fX0-5D9cv0oJ008MCFRSLHVTUkcyqgZAaIg9GG_OGzh9zMocy
 REFRESH_TOKEN_EXPIRY=10d # 10 days. Formats: https://github.com/vercel/ms#examples
 # CORS_ORIGIN=http://localhost # add the frontend URL (more secure)
 CORS_ORIGIN=http://localhost:3000 # This must be ("*") or comma separated origins ("https://example1.com,https://example2.com,http://localhost:3000")
-FREEAPI_HOST_URL=http://localhost:8080
+FREEAPI_HOST_URL=http://localhost:8080 # Base URL for the API, used in Swagger docs. Change port to match PORT above if needed
 # ################# REQUIRED ENV VARS END #################
 
 # ----------------------------------------------------------------------------------------------------------

CLAUDE.md

@@ -0,0 +1,126 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Development Commands
+
+**Development:**
+```bash
+yarn start                    # Start development server with nodemon
+yarn start:test-server       # Start test server for e2e testing
+```
+
+**Testing:**
+```bash
+yarn test:playwright         # Run Playwright e2e tests
+yarn playwright show-report  # View Playwright test report
+```
+
+**Code Quality:**
+```bash
+yarn pre-commit             # Run lint-staged pre-commit hooks (Prettier formatting)
+```
+
+**Docker:**
+```bash
+docker-compose up --build --attach backend  # Run with Docker, show only backend logs
+```
+
+**Database Management:**
+```bash
+# Via API endpoint (development only)
+DELETE /api/v1/reset-db     # Reset entire database and remove uploaded files
+```
+
+## Project Architecture
+
+**FreeAPI Hub** is a comprehensive API collection platform that provides free APIs for learning and development. The project follows a modular Express.js architecture with the following key components:
+
+### Core Structure
+- **Entry Point:** `src/index.js` - Server startup and database connection
+- **App Configuration:** `src/app.js` - Express app setup, middleware, and route mounting
+- **Database:** MongoDB with Mongoose ODM, connection at `src/db/index.js`
+- **Constants:** All enums and constants defined in `src/constants.js`
+
+### API Categories
+The API endpoints are organized into distinct categories:
+
+1. **Apps APIs** (`src/controllers/apps/`):
+   - **Authentication:** User registration, login, JWT tokens, OAuth (Google/GitHub)
+   - **Chat App:** Real-time messaging with Socket.IO
+   - **E-commerce:** Products, cart, orders, payments (Razorpay/PayPal)
+   - **Social Media:** Posts, likes, comments, follows, bookmarks
+   - **Todo App:** Task management
+
+2. **Public APIs** (`src/controllers/public/`):
+   - Static data APIs (books, cats, dogs, meals, quotes, jokes, users, stocks, YouTube data)
+   - No authentication required
+
+3. **Kitchen Sink APIs** (`src/controllers/kitchen-sink/`):
+   - HTTP testing utilities (status codes, redirects, request inspection)
+   - Image generation, cookie handling
+
+### Architecture Patterns
+- **Controllers:** Handle HTTP requests and responses
+- **Models:** Mongoose schemas in `src/models/apps/`
+- **Routes:** Express route definitions in `src/routes/`
+- **Middlewares:** Authentication, error handling, file uploads at `src/middlewares/`
+- **Utils:** Common utilities (`ApiError`, `ApiResponse`, `asyncHandler`) at `src/utils/`
+
+### Key Features
+- **Socket.IO Integration:** Real-time chat functionality
+- **Authentication:** JWT with refresh tokens, OAuth providers
+- **File Uploads:** Multer middleware for image handling
+- **Payment Integration:** Razorpay and PayPal support
+- **Rate Limiting:** Express rate limiting middleware
+- **API Documentation:** Swagger/OpenAPI spec at `src/swagger.yaml`
+- **Logging:** Winston logger with Morgan HTTP logging
+
+### Environment Configuration
+Copy `.env.sample` to `.env` and configure:
+- Database: `MONGODB_URI`
+- JWT secrets: `ACCESS_TOKEN_SECRET`, `REFRESH_TOKEN_SECRET`
+- OAuth credentials for Google/GitHub
+- Payment provider credentials (optional)
+- CORS and host URL settings
+
+### Testing Setup
+- **Framework:** Playwright for e2e testing
+- **Test Location:** `e2e/` directory
+- **Test Server:** Separate test server with in-memory MongoDB (`e2e/test-server.js`)
+- **Configuration:** Uses `MONGO_MEMORY_SERVER_PORT=10000` for testing
+- **Test Database:** Dedicated test database setup in `e2e/db.js`
+- **Workers:** Single worker mode to prevent database conflicts
+
+### Socket.IO Events
+Chat functionality uses predefined events from `ChatEventEnum` including:
+- Connection/disconnection events
+- Message sending/receiving
+- Typing indicators
+- Chat room management
+
+The project serves as both a learning resource and production-ready API hub, with comprehensive documentation available via Swagger UI at the root URL when running locally.
+
+## Code Quality and Development Tools
+
+### Formatting and Linting
+- **Prettier:** Automated code formatting via lint-staged
+- **Lint-staged:** Pre-commit hooks for consistent code style
+- **Commitlint:** Enforces conventional commit message format
+
+### Commit Message Standards
+Uses conventional commits with types: `ci`, `chore`, `docs`, `feat`, `fix`, `perf`, `refactor`, `revert`, `style`, `assets`, `test`
+
+### Data Seeding
+Development endpoints for seeding test data:
+- `/api/v1/seed/generated-credentials` - Get seeded user credentials
+- `/api/v1/seed/todos` - Seed todo data
+- `/api/v1/seed/ecommerce` - Seed ecommerce data (creates users first)
+- `/api/v1/seed/social-media` - Seed social media data (creates users first)
+- `/api/v1/seed/chat-app` - Seed chat application data (creates users first)
+
+### Examples Directory
+Includes frontend examples in `examples/` directory:
+- React implementations for various API categories
+- Pre-configured with Tailwind CSS, Vite, and state management
+- Organized by feature: ecommerce, chat-app, todo, kitchen-sink