banatie-service/CLAUDE.md

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# CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
## Project Overview
Banatie is a comprehensive monorepo for AI-powered image generation platform featuring multiple applications:
- **API Service** (`apps/api-service`) - Core REST API using Express.js and TypeScript for image generation with Gemini AI
- **Landing Page** (`apps/landing`) - Next.js public website with demo functionality
- **Studio Platform** (`apps/studio`) - Next.js SaaS application with authentication, billing, and subscriptions. Based on https://github.com/nextjs/saas-starter
- **Admin Dashboard** (`apps/admin`) - Next.js administration interface for monitoring and management
The project uses MinIO for object storage and PostgreSQL for data persistence, all orchestrated with Docker Compose.
## Development Commands
Use `docker compose` command for Docker services (v3 version).
### Infrastructure
- `docker compose up -d postgres minio storage-init` - Start database and storage services
- `docker compose up -d` - Start all services including the API app container
- `docker compose down` - Stop all services
### Monorepo Commands (from root)
- `pnpm dev` - Start all applications in development mode
- `pnpm dev:api` - Start API service only (`apps/api-service`)
- `pnpm dev:landing` - Start landing page only (`apps/landing`)
- `pnpm dev:studio` - Start studio platform only (`apps/studio`)
- `pnpm dev:admin` - Start admin dashboard only (`apps/admin`)
### Build & Production
- `pnpm build` - Build all applications
- `pnpm build:api` - Build API service only
- `pnpm start:api` - Start API service in production mode
- `pnpm start:landing` - Start landing page in production mode
### Code Quality (runs across all apps)
- `pnpm lint` - Run ESLint on all applications
- `pnpm typecheck` - Run TypeScript checking on all applications
- `pnpm test` - Run tests (currently API service only)
- `pnpm clean` - Clean all build outputs and dependencies
## Architecture
### Monorepo Structure
```
banatie-service/
├── apps/
│ ├── api-service/ # Express.js REST API (TypeScript)
│ ├── landing/ # Next.js landing page
│ ├── studio/ # Next.js SaaS platform
│ └── admin/ # Next.js admin dashboard
├── data/ # Docker volume data (postgres, minio)
├── docker-compose.yml # Infrastructure services
├── pnpm-workspace.yaml # Workspace configuration
└── package.json # Root workspace scripts
```
### API Service Architecture (`apps/api-service/`)
- **Express App**: Configured in `src/app.ts` with middleware, CORS, and route mounting
- **Server Entry**: `src/server.ts` starts the HTTP server
- **Image Generation**: `src/services/ImageGenService.ts` handles Gemini AI integration
- **Storage**: `src/services/MinioStorageService.ts` handles file uploads to MinIO
- **Route Handling**: `src/routes/generate.ts` contains the main API endpoint logic
### Middleware Stack (API Service)
- `src/middleware/upload.ts` - Multer configuration for file uploads (max 3 files, 5MB each)
- `src/middleware/validation.ts` - Express-validator for request validation
- `src/middleware/errorHandler.ts` - Centralized error handling and 404 responses
### TypeScript Configuration (API Service)
- Path aliases configured in `apps/api-service/tsconfig.json`:
- `@/*` maps to `src/*`
- `@/types/*` maps to `src/types/*`
- `@/services/*` maps to `src/services/*`
- `@/middleware/*` maps to `src/middleware/*`
- `@/routes/*` maps to `src/routes/*`
- `@/utils/*` maps to `src/utils/*`
### Storage & Data
- **MinIO**: Object storage for generated images and uploads (port 9000)
- **PostgreSQL**: Database for user data, metadata (port 5434)
- **File Organization**: `orgId/projectId/category/year-month/filename.ext`
## Environment Configuration
### Root Environment (`.env.docker`)
- `MINIO_ROOT_USER` - MinIO admin username
- `MINIO_ROOT_PASSWORD` - MinIO admin password
### API Service Environment (`apps/api-service/.env`)
Required environment variables:
- `GEMINI_API_KEY` - Google Gemini API key (required)
- `MINIO_ENDPOINT` - MinIO endpoint (`localhost:9000` for local dev, `minio:9000` for Docker)
- `MINIO_ACCESS_KEY` - MinIO service account key
- `MINIO_SECRET_KEY` - MinIO service account secret
- `MINIO_BUCKET_NAME` - Storage bucket name (default: `banatie`)
- `PORT` - Server port (default: 3000)
- `NODE_ENV` - Environment mode
- `CORS_ORIGIN` - CORS origin setting (default: \*)
## Key Dependencies
### API Service
- **@google/genai** - Google Gemini AI client
- **express** v5 - Web framework
- **multer** - File upload handling
- **minio** - MinIO client for object storage
- **express-validator** - Request validation
- **winston** - Logging
- **helmet** - Security middleware
- **express-rate-limit** - Rate limiting
### Frontend Apps (Next.js)
- **next** - React framework
- **tailwindcss** - Utility-first CSS framework
- **typescript** - Type safety
- **supabase** - Authentication and database (studio app)
- **stripe** - Payment processing (studio app)
## Service Ports
| Service | Port | Description |
| --------------- | ---- | ------------------ |
| API Service | 3000 | REST API endpoints |
| Landing Page | 3001 | Public website |
| Studio Platform | 3002 | SaaS application |
| Admin Dashboard | 3003 | Administration |
| PostgreSQL | 5434 | Database |
| MinIO API | 9000 | Object storage |
| MinIO Console | 9001 | Storage management |
## API Endpoints (API Service)
- `GET /health` - Health check with uptime and status
- `GET /api/info` - API information and limits
- `POST /api/generate` - Main image generation endpoint (multipart/form-data)
## Development Notes
- Uses pnpm workspaces for monorepo management (required >= 8.0.0)
- Node.js >= 18.0.0 required
- TypeScript with strict mode enabled across all apps
- ESLint configured with TypeScript and Prettier integration
- Jest for testing with ts-jest preset (API service)
- Each app can be developed and deployed independently