major refactoring adding vendor and customer features

2025-10-11 09:11:42 +02:00
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+# Multi-Tenant Ecommerce Platform - Complete Project Structure
+
+## Project Overview
+
+This document outlines the complete project structure for a production-ready multi-tenant ecommerce platform with marketplace integration. The platform implements complete vendor isolation with comprehensive business features including notifications, media management, search, caching, audit logging, and monitoring.
+
+## Technology Stack
+
+- **Backend**: Python FastAPI with PostgreSQL
+- **Frontend**: Vanilla HTML, CSS, JavaScript with AJAX
+- **Background Jobs**: Celery with Redis
+- **Search**: Elasticsearch with database fallback
+- **Caching**: Redis multi-layer caching
+- **Storage**: Local/S3 with CDN integration
+- **Monitoring**: Custom monitoring with alerting
+- **Deployment**: Docker with environment-based configuration
+
+## Complete Directory Structure
+
+```
+├── main.py                     # FastAPI application entry point
+├── app/
+│   ├── api/
+│   │   ├── deps.py             # Common dependencies
+│   │   ├── main.py             # API router setup
+│   │   └── v1/                 # API version 1 routes
+│   │       ├── admin/          # Super admin endpoints
+│   │       │   ├── __init__.py
+│   │       │   ├── auth.py     # Admin authentication
+│   │       │   ├── vendors.py  # Vendor management (CRUD, bulk import)
+│   │       │   ├── dashboard.py # Admin dashboard & statistics
+│   │       │   ├── users.py    # User management across vendors
+│   │       │   ├── marketplace.py # System-wide marketplace monitoring
+│   │       │   └── monitoring.py # Platform monitoring & alerts
+│   │       ├── vendor/         # Vendor-scoped endpoints
+│   │       │   ├── __init__.py
+│   │       │   ├── auth.py     # Vendor team authentication
+│   │       │   ├── dashboard.py # Vendor dashboard & statistics
+│   │       │   ├── products.py # Vendor catalog management (Product table)
+│   │       │   ├── marketplace.py # Marketplace import & selection (MarketplaceProduct table)
+│   │       │   ├── orders.py   # Vendor order management
+│   │       │   ├── customers.py # Vendor customer management
+│   │       │   ├── teams.py    # Team member management
+│   │       │   ├── inventory.py # Inventory operations (vendor catalog products)
+│   │       │   ├── payments.py # Payment configuration & processing
+│   │       │   ├── media.py    # File and media management
+│   │       │   ├── notifications.py # Notification management
+│   │       │   └── settings.py # Vendor settings & configuration
+│   │       ├── public/         # Public customer-facing endpoints
+│   │       │   ├── __init__.py
+│   │       │   └── vendors/    # Vendor-specific public APIs
+│   │       │       ├── shop.py     # Public shop info
+│   │       │       ├── products.py # Public product catalog (Product table only)
+│   │       │       ├── search.py   # Product search functionality
+│   │       │       ├── cart.py     # Shopping cart operations
+│   │       │       ├── orders.py   # Order placement
+│   │       │       ├── payments.py # Payment processing
+│   │       │       └── auth.py     # Customer authentication
+│   │       └── shared/         # Shared/utility endpoints
+│   │           ├── health.py   # Health checks
+│   │           ├── webhooks.py # External webhooks (Stripe, etc.)
+│   │           └── uploads.py  # File upload handling
+│   ├── core/
+│   │   ├── config.py           # Configuration settings
+│   │   ├── database.py         # Database setup
+│   │   └── lifespan.py         # App lifecycle management
+│   ├── exceptions/             # Custom exception handling
+│   │   ├── __init__.py         # All exception exports
+│   │   ├── base.py             # Base exception classes
+│   │   ├── handler.py          # Unified FastAPI exception handlers
+│   │   ├── auth.py             # Authentication/authorization exceptions
+│   │   ├── admin.py            # Admin operation exceptions
+│   │   ├── marketplace.py      # Import/marketplace exceptions
+│   │   ├── marketplace_product.py # Marketplace staging exceptions
+│   │   ├── product.py          # Vendor catalog exceptions
+│   │   ├── vendor.py           # Vendor management exceptions
+│   │   ├── customer.py         # Customer management exceptions
+│   │   ├── order.py            # Order management exceptions
+│   │   ├── payment.py          # Payment processing exceptions
+│   │   ├── inventory.py        # Inventory management exceptions
+│   │   ├── media.py            # Media/file management exceptions
+│   │   ├── notification.py     # Notification exceptions
+│   │   ├── search.py           # Search exceptions
+│   │   ├── monitoring.py       # Monitoring exceptions
+│   │   └── backup.py           # Backup/recovery exceptions
+│   └── services/               # Business logic layer
+│       ├── auth_service.py     # Authentication/authorization services
+│       ├── admin_service.py    # Admin services
+│       ├── vendor_service.py   # Vendor management services
+│       ├── customer_service.py # Customer services (vendor-scoped)
+│       ├── team_service.py     # Team management services
+│       ├── marketplace_service.py # Marketplace import services (MarketplaceProduct)
+│       ├── marketplace_product_service.py # Marketplace staging services
+│       ├── product_service.py  # Vendor catalog services (Product)
+│       ├── order_service.py    # Order services (vendor-scoped)
+│       ├── payment_service.py  # Payment processing services
+│       ├── inventory_service.py # Inventory services (vendor catalog)
+│       ├── media_service.py    # File and media management services
+│       ├── notification_service.py # Email/notification services
+│       ├── search_service.py   # Search and indexing services
+│       ├── cache_service.py    # Caching services
+│       ├── audit_service.py    # Audit logging services
+│       ├── monitoring_service.py # Application monitoring services
+│       ├── backup_service.py   # Backup and recovery services
+│       ├── configuration_service.py # Configuration management services
+│       └── stats_service.py    # Statistics services (vendor-aware)
+├── tasks/                      # Background task processing
+│   ├── __init__.py
+│   ├── task_manager.py         # Celery configuration and task management
+│   ├── marketplace_import.py   # Marketplace CSV import tasks
+│   ├── email_tasks.py          # Email sending tasks
+│   ├── media_processing.py     # Image processing and optimization tasks
+│   ├── search_indexing.py      # Search index maintenance tasks
+│   ├── analytics_tasks.py      # Analytics and reporting tasks
+│   ├── cleanup_tasks.py        # Data cleanup and maintenance tasks
+│   └── backup_tasks.py         # Backup and recovery tasks
+├── models/
+│   ├── database/               # SQLAlchemy ORM models
+│   │   ├── __init__.py         # Import all models for easy access
+│   │   ├── base.py             # Base model class and common mixins
+│   │   ├── user.py             # User model (with vendor relationships)
+│   │   ├── vendor.py           # Vendor, VendorUser, Role models
+│   │   ├── customer.py         # Customer, CustomerAddress models (vendor-scoped)
+│   │   ├── marketplace_product.py # MarketplaceProduct model (staging data)
+│   │   ├── product.py          # Product model (vendor catalog)
+│   │   ├── order.py            # Order, OrderItem models (vendor-scoped)
+│   │   ├── payment.py          # Payment, PaymentMethod, VendorPaymentConfig models
+│   │   ├── inventory.py        # Inventory, InventoryMovement models (catalog products)
+│   │   ├── marketplace.py      # MarketplaceImportJob model
+│   │   ├── media.py            # MediaFile, ProductMedia models
+│   │   ├── notification.py     # NotificationTemplate, NotificationQueue, NotificationLog models
+│   │   ├── search.py           # SearchIndex, SearchQuery models
+│   │   ├── audit.py            # AuditLog, DataExportLog models
+│   │   ├── monitoring.py       # PerformanceMetric, ErrorLog, SystemAlert models
+│   │   ├── backup.py           # BackupLog, RestoreLog models
+│   │   ├── configuration.py    # PlatformConfig, VendorConfig, FeatureFlag models
+│   │   ├── task.py             # TaskLog model
+│   │   └── admin.py            # Admin-specific models
+│   └── schema/                 # Pydantic models for API validation
+│       ├── __init__.py         # Common imports
+│       ├── base.py             # Base Pydantic models
+│       ├── auth.py             # Login, Token, User response models
+│       ├── vendor.py           # Vendor management models
+│       ├── customer.py         # Customer request/response models
+│       ├── team.py             # Team management models
+│       ├── marketplace_product.py # Marketplace staging models
+│       ├── product.py          # Vendor catalog models
+│       ├── order.py            # Order models (vendor-scoped)
+│       ├── payment.py          # Payment models
+│       ├── inventory.py        # Inventory operation models
+│       ├── marketplace.py      # Marketplace import job models
+│       ├── media.py            # Media/file management models
+│       ├── notification.py     # Notification models
+│       ├── search.py           # Search models
+│       ├── monitoring.py       # Monitoring models
+│       ├── admin.py            # Admin operation models
+│       └── stats.py            # Statistics response models
+├── middleware/
+│   ├── auth.py                 # JWT authentication
+│   ├── vendor_context.py       # Vendor context detection and injection
+│   ├── rate_limiter.py         # Rate limiting
+│   ├── logging_middleware.py   # Request logging
+│   └── decorators.py           # Cross-cutting concern decorators
+├── storage/                    # Storage backends
+│   ├── __init__.py
+│   ├── backends.py             # Storage backend implementations
+│   └── utils.py                # Storage utilities
+├── static/                     # Frontend assets
+│   ├── admin/                  # Super admin interface
+│   │   ├── login.html          # Admin login page
+│   │   ├── dashboard.html      # Admin dashboard
+│   │   ├── vendors.html        # Vendor management
+│   │   ├── users.html          # User management
+│   │   ├── marketplace.html    # System-wide marketplace monitoring
+│   │   └── monitoring.html     # System monitoring
+│   ├── vendor/                 # Vendor admin interface
+│   │   ├── login.html          # Vendor team login
+│   │   ├── dashboard.html      # Vendor dashboard
+│   │   └── admin/              # Vendor admin pages
+│   │       ├── products.html   # Catalog management (Product table)
+│   │       ├── marketplace/    # Marketplace integration
+│   │       │   ├── imports.html    # Import jobs & history
+│   │       │   ├── browse.html     # Browse marketplace products (staging)
+│   │       │   ├── selected.html   # Selected products (pre-publish)
+│   │       │   └── config.html     # Marketplace configuration
+│   │       ├── orders.html     # Order management
+│   │       ├── customers.html  # Customer management
+│   │       ├── teams.html      # Team management
+│   │       ├── inventory.html  # Inventory management (catalog products)
+│   │       ├── payments.html   # Payment configuration
+│   │       ├── media.html      # Media library
+│   │       ├── notifications.html # Notification templates & logs
+│   │       └── settings.html   # Vendor settings
+│   ├── shop/                   # Customer-facing shop interface
+│   │   ├── home.html           # Shop homepage
+│   │   ├── products.html       # Product catalog (Product table only)
+│   │   ├── product.html        # Product detail page
+│   │   ├── search.html         # Search results page
+│   │   ├── cart.html           # Shopping cart
+│   │   ├── checkout.html       # Checkout process
+│   │   └── account/            # Customer account pages
+│   │       ├── login.html      # Customer login
+│   │       ├── register.html   # Customer registration
+│   │       ├── profile.html    # Customer profile
+│   │       ├── orders.html     # Order history
+│   │       └── addresses.html  # Address management
+│   ├── css/
+│   │   ├── admin/              # Admin interface styles
+│   │   ├── vendor/             # Vendor interface styles
+│   │   ├── shop/               # Customer shop styles
+│   │   ├── shared/             # Common styles
+│   │   └── themes/             # Vendor-specific themes
+│   └── js/
+│       ├── shared/             # Common JavaScript utilities
+│       │   ├── vendor-context.js # Vendor context detection & management
+│       │   ├── api-client.js   # API communication utilities
+│       │   ├── notification.js # Notification handling
+│       │   ├── media-upload.js # File upload utilities
+│       │   └── search.js       # Search functionality
+│       ├── admin/              # Admin interface scripts
+│       │   ├── dashboard.js    # Admin dashboard
+│       │   ├── vendors.js      # Vendor management
+│       │   ├── monitoring.js   # System monitoring
+│       │   └── analytics.js    # Admin analytics
+│       ├── vendor/             # Vendor interface scripts
+│       │   ├── products.js     # Catalog management
+│       │   ├── marketplace.js  # Marketplace integration
+│       │   ├── orders.js       # Order management
+│       │   ├── payments.js     # Payment configuration
+│       │   ├── media.js        # Media management
+│       │   └── dashboard.js    # Vendor dashboard
+│       └── shop/               # Customer shop scripts
+│           ├── catalog.js      # Product browsing
+│           ├── search.js       # Product search
+│           ├── cart.js         # Shopping cart
+│           ├── checkout.js     # Checkout process
+│           └── account.js      # Customer account
+├── tests/                      # Comprehensive test suite
+│   ├── unit/                   # Unit tests
+│   │   ├── services/           # Service layer tests
+│   │   │   ├── test_marketplace_service.py # Marketplace staging tests
+│   │   │   ├── test_product_service.py     # Catalog management tests
+│   │   │   ├── test_payment_service.py     # Payment processing tests
+│   │   │   ├── test_notification_service.py # Notification tests
+│   │   │   ├── test_search_service.py      # Search functionality tests
+│   │   │   ├── test_media_service.py       # Media management tests
+│   │   │   └── test_cache_service.py       # Caching tests
+│   │   ├── models/             # Model tests
+│   │   │   ├── test_marketplace_product.py # Staging model tests
+│   │   │   ├── test_product.py             # Catalog model tests
+│   │   │   ├── test_payment.py             # Payment model tests
+│   │   │   └── test_vendor.py              # Vendor model tests
+│   │   └── api/                # API endpoint tests
+│   │       ├── test_admin_api.py           # Admin API tests
+│   │       ├── test_vendor_api.py          # Vendor API tests
+│   │       └── test_public_api.py          # Public API tests
+│   ├── integration/            # Integration tests
+│   │   ├── test_marketplace_workflow.py   # End-to-end import workflow
+│   │   ├── test_order_workflow.py         # Complete order process
+│   │   ├── test_payment_workflow.py       # Payment processing
+│   │   └── test_notification_workflow.py  # Notification sending
+│   ├── e2e/                    # End-to-end tests
+│   │   ├── test_vendor_onboarding.py      # Complete vendor setup
+│   │   ├── test_customer_journey.py       # Customer shopping experience
+│   │   └── test_admin_operations.py       # Admin platform management
+│   └── fixtures/               # Test data fixtures
+│       ├── marketplace_data.py # Sample marketplace import data
+│       ├── catalog_data.py     # Sample vendor catalog data
+│       ├── order_data.py       # Sample order data
+│       └── user_data.py        # Sample user and vendor data
+├── scripts/                    # Utility scripts
+│   ├── init_db.py             # Database initialization
+│   ├── create_admin.py        # Create initial admin user
+│   ├── backup_database.py     # Manual backup script
+│   ├── seed_data.py           # Development data seeding
+│   └── migrate_data.py        # Data migration utilities
+├── docker/                     # Docker configuration
+│   ├── Dockerfile             # Application container
+│   ├── docker-compose.yml     # Development environment
+│   ├── docker-compose.prod.yml # Production environment
+│   └── nginx.conf             # Nginx configuration
+├── docs/                       # Documentation
+│   ├── api/                   # API documentation
+│   ├── deployment/            # Deployment guides
+│   ├── development/           # Development setup
+│   └── user_guides/           # User manuals
+├── .env.example               # Environment variables template
+├── requirements.txt           # Python dependencies
+├── requirements-dev.txt       # Development dependencies
+├── README.md                  # Project documentation
+└── DEPLOYMENT.md             # Deployment instructions
+```
+
+## Architecture Principles
+
+### Multi-Tenancy Model
+- **Complete Vendor Isolation**: Each vendor operates independently with no data sharing
+- **Chinese Wall**: Strict separation between vendor data and operations
+- **Self-Service**: Vendors manage their own teams, products, and marketplace integrations
+- **Scalable**: Single codebase serves all vendors with vendor-specific customization
+
+### Data Flow Architecture
+```
+Marketplace CSV → MarketplaceProduct (staging) → Product (catalog) → Order → Analytics
+                                 ↓
+                          Email Notifications → Audit Logs → Monitoring
+```
+
+### API Structure
+- **Admin APIs** (`/api/v1/admin/`): Platform-level administration
+- **Vendor APIs** (`/api/v1/vendor/`): Vendor-scoped operations (requires vendor context)
+- **Public APIs** (`/api/v1/public/vendors/{vendor_id}/`): Customer-facing operations
+- **Shared APIs** (`/api/v1/shared/`): Utility endpoints (health, webhooks)
+
+### Service Layer Architecture
+- **Domain Services**: Each service handles one business domain (products, orders, payments)
+- **Cross-Cutting Services**: Shared services (cache, audit, monitoring, notifications)
+- **Integration Services**: External service integration (payments, search, storage)
+
+### Frontend Architecture
+- **Static Assets**: All frontend files served from `/static/` directory
+- **Single Application**: One frontend codebase serving all vendors
+- **Context-Aware Routing**: Automatic vendor detection via subdomain or path
+- **Dynamic Theming**: Vendor-specific customization and branding
+- **Role-Based UI**: Permission-driven interface elements
+
+## Key Features
+
+### Core Business Features
+- Multi-vendor marketplace with complete isolation
+- Marketplace product import and curation workflow
+- Comprehensive order and payment processing
+- Customer management with vendor-scoped accounts
+- Team management with role-based permissions
+- Inventory tracking and management
+
+### Advanced Features
+- Email notification system with vendor branding
+- File and media management with CDN integration
+- Advanced search with Elasticsearch
+- Multi-layer caching for performance
+- Comprehensive audit logging for compliance
+- Real-time monitoring and alerting
+- Automated backup and disaster recovery
+- Configuration management with feature flags
+
+### Security Features
+- JWT-based authentication with vendor context
+- Role-based access control with granular permissions
+- Complete vendor data isolation at all layers
+- Audit trails for all operations
+- Secure file storage with access controls
+- Rate limiting and abuse prevention
+
+### Integration Capabilities
+- Stripe Connect for multi-vendor payments
+- Marketplace integrations (Letzshop with extensible framework)
+- Multiple storage backends (Local, S3, GCS)
+- Search engines (Elasticsearch with database fallback)
+- Email providers (SendGrid, SMTP)
+- Monitoring and alerting systems
+
+## Deployment Modes
+
+### Development Mode
+- **Path-based routing**: `localhost:3000/vendor/vendorname/`
+- **Admin access**: `localhost:3000/admin/`
+- **Easy context switching**: Clear vendor separation in URLs
+- **Local storage**: Files stored locally with hot reload
+
+### Production Mode
+- **Subdomain routing**: `vendorname.platform.com`
+- **Admin subdomain**: `admin.platform.com`
+- **Custom domains**: `customdomain.com` (enterprise feature)
+- **CDN integration**: Optimized asset delivery
+- **Distributed caching**: Redis cluster for performance
+- **Automated backups**: Scheduled database and file backups
+
+## Technology Integration
+
+### Database Layer
+- **PostgreSQL**: Primary database with ACID compliance
+- **Redis**: Caching and session storage
+- **Elasticsearch**: Search and analytics (optional)
+
+### Background Processing
+- **Celery**: Distributed task processing
+- **Redis**: Message broker and result backend
+- **Monitoring**: Task progress and error tracking
+
+### External Services
+- **Stripe Connect**: Payment processing
+- **SendGrid/SMTP**: Email delivery
+- **AWS S3/GCS**: Cloud storage
+- **CloudFront/CloudFlare**: CDN
+
+### Monitoring Stack
+- **Custom Monitoring**: Application-specific metrics
+- **Error Tracking**: Comprehensive error logging
+- **Performance Monitoring**: Response times and throughput
+- **Health Checks**: Automated system health monitoring
+
+This structure provides a robust foundation for a scalable, multi-tenant ecommerce platform with enterprise-grade features while maintaining clean separation of concerns and supporting multiple deployment modes.