782 lines
23 KiB
Markdown
782 lines
23 KiB
Markdown
# Multi-Tenant Ecommerce Platform
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A production-ready, multi-tenant ecommerce platform that enables vendors to operate independent webshops while integrating with external marketplaces. Built with complete vendor isolation, comprehensive business features, and modern reactive frontend.
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## 🚀 Features
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### Core Business Features
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- **Multi-Vendor Marketplace**: Complete vendor isolation with independent webshops
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- **Marketplace Integration**: Import and curate products from external marketplaces (Letzshop CSV)
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- **Product Catalog Management**: Vendor-scoped product publishing from marketplace imports
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- **Inventory Management**: Real-time stock tracking with location-based inventory
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- **Order Management**: Complete order lifecycle with status tracking and fulfillment
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- **Customer Management**: Vendor-scoped customer accounts with order history
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- **Team Management**: Role-based access control with granular permissions
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- **Shopping Cart**: Session-based cart with real-time updates
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### Technical Features
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- **Modern Frontend Stack**: Alpine.js for reactive UI with zero build step
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- **RESTful API Architecture**: FastAPI with comprehensive OpenAPI documentation
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- **Service Layer Pattern**: Clean separation of business logic and data access
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- **Exception-First Error Handling**: Frontend-friendly error responses with consistent error codes
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- **Multi-tenant Security**: Complete data isolation with vendor context detection
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- **Background Job Processing**: Async marketplace imports with status tracking
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- **Comprehensive API**: Admin, Vendor, and Public (Customer) endpoints
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### Security & Compliance
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- **Complete Data Isolation**: Chinese wall between vendor data
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- **JWT Authentication**: Secure token-based authentication for all user types
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- **Role-Based Access Control**: Granular permissions (Owner, Manager, Editor, Viewer)
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- **Vendor Context Detection**: Subdomain and path-based tenant isolation
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- **Input Validation**: Pydantic models for all API requests
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- **Exception Handling**: Structured error responses with proper HTTP status codes
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## 🏗️ Architecture
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### Technology Stack
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- **Backend**: Python 3.10+ with FastAPI
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- **Database**: PostgreSQL with SQLAlchemy ORM
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- **Frontend**: Vanilla HTML, CSS, JavaScript with Alpine.js (CDN-based, no build step)
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- **Authentication**: JWT tokens with role-based permissions
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- **Background Jobs**: Async CSV import processing
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- **API Documentation**: Auto-generated OpenAPI/Swagger
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### Multi-Tenancy Model
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```
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Platform
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├── Admin Portal (admin.platform.com or /admin)
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│ ├── Vendor management
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│ ├── User administration
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│ ├── Platform statistics
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│ └── Import job monitoring
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├── Vendor A (vendor-a.platform.com or /vendor/{code})
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│ ├── Marketplace product imports
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│ ├── Product catalog publishing
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│ ├── Order management
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│ ├── Customer management
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│ ├── Team management
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│ └── Inventory tracking
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├── Vendor B (vendor-b.platform.com or /vendor/{code})
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│ └── Completely isolated from Vendor A
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└── Customer Shop (/shop or subdomain)
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├── Product browsing
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├── Shopping cart
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├── Order placement
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└── Order history
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```
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### Data Flow
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```
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Marketplace CSV → Import Job → MarketplaceProduct (Staging) → Product (Catalog) → Order → Customer
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↓ ↓ ↓
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Job Status Product Selection Inventory Tracking
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```
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## 📁 Project Structure
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```
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├── main.py # FastAPI application entry point
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├── app/
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│ ├── api/
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│ │ ├── main.py # API router aggregation
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│ │ ├── deps.py # Dependency injection (auth, context)
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│ │ └── v1/ # API version 1
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│ │ ├── admin/ # Admin endpoints
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│ │ │ ├── __init__.py
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│ │ │ ├── auth.py
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│ │ │ ├── vendors.py
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│ │ │ ├── users.py
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│ │ │ ├── marketplace.py
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│ │ │ └── dashboard.py
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│ │ ├── vendor/ # Vendor endpoints
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│ │ │ ├── __init__.py
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│ │ │ ├── auth.py
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│ │ │ ├── dashboard.py
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│ │ │ ├── products.py
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│ │ │ ├── orders.py
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│ │ │ ├── marketplace.py
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│ │ │ ├── inventory.py
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│ │ │ └── vendor.py
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│ │ └── public/ # Customer endpoints
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│ │ ├── __init__.py
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│ │ └── vendors/
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│ │ ├── auth.py
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│ │ ├── products.py
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│ │ ├── cart.py
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│ │ └── orders.py
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│ ├── core/
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│ │ ├── database.py # Database configuration
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│ │ ├── security.py # JWT and password utilities
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│ │ └── config.py # Application settings
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│ ├── exceptions/ # Custom exceptions
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│ │ ├── __init__.py
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│ │ ├── base.py
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│ │ ├── auth.py
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│ │ ├── vendor.py
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│ │ ├── customer.py
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│ │ ├── product.py
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│ │ ├── order.py
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│ │ ├── inventory.py
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│ │ ├── team.py
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│ │ ├── marketplace_product.py
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│ │ ├── marketplace_import_job.py
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│ │ └── admin.py
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│ └── services/ # Business logic layer
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│ ├── auth_service.py
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│ ├── admin_service.py
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│ ├── vendor_service.py
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│ ├── customer_service.py
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│ ├── product_service.py
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│ ├── order_service.py
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│ ├── cart_service.py
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│ ├── inventory_service.py
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│ ├── team_service.py
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│ ├── marketplace_service.py
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│ └── stats_service.py
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├── models/
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│ ├── database/ # SQLAlchemy ORM models
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│ │ ├── base.py
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│ │ ├── user.py
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│ │ ├── vendor.py
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│ │ ├── customer.py
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│ │ ├── product.py
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│ │ ├── order.py
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│ │ ├── inventory.py
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│ │ ├── marketplace_product.py
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│ │ └── marketplace_import_job.py
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│ └── schemas/ # Pydantic validation models
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│ ├── auth.py
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│ ├── vendor.py
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│ ├── customer.py
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│ ├── product.py
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│ ├── order.py
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│ ├── inventory.py
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│ ├── marketplace_product.py
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│ ├── marketplace_import_job.py
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│ └── stats.py
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├── middleware/
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│ ├── auth.py # JWT authentication
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│ ├── vendor_context.py # Multi-tenant context detection
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│ ├── rate_limiter.py # API rate limiting
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│ └── decorators.py # Utility decorators
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├── static/ # Frontend assets (no build step required)
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│ ├── admin/ # Admin interface
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│ │ ├── login.html
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│ │ ├── dashboard.html
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│ │ └── vendors.html
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│ ├── vendor/ # Vendor management UI
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│ │ ├── login.html
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│ │ ├── dashboard.html
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│ │ └── admin/
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│ │ ├── products.html
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│ │ ├── orders.html
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│ │ └── marketplace.html
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│ ├── shop/ # Customer shop interface
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│ │ ├── products.html
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│ │ ├── product.html # Alpine.js product detail
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│ │ ├── cart.html
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│ │ └── account/
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│ │ ├── register.html
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│ │ ├── login.html
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│ │ └── orders.html
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│ ├── css/
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│ │ ├── shared/
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│ │ │ ├── base.css # CSS variables, utility classes
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│ │ │ └── auth.css
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│ │ ├── admin/
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│ │ │ └── admin.css
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│ │ ├── vendor/
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│ │ │ └── vendor.css
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│ │ └── shop/
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│ │ └── shop.css
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│ └── js/
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│ └── shared/
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│ ├── api-client.js
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│ ├── vendor-context.js
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│ └── utils.js
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├── scripts/
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│ ├── init_db.py # Database initialization
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│ └── create_admin.py # Admin user creation
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└── tests/
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├── unit/
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├── integration/
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└── e2e/
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```
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## 🚀 Quick Start
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### Prerequisites
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- Python 3.10+
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- PostgreSQL 14+
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- Node.js (optional, only for development tools)
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### Development Setup
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#### 1. Clone and Setup Environment
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```bash
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git clone <repository-url>
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cd multi-tenant-ecommerce
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python -m venv venv
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source venv/bin/activate # On Windows: venv\Scripts\activate
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pip install -r requirements.txt
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```
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#### 2. Database Setup
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```bash
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# Create database
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createdb letzvendor_db
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# Run migrations
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python scripts/init_db.py
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# Create initial admin user
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python scripts/create_admin.py
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```
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#### 3. Environment Configuration
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```bash
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cp .env.example .env
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# Edit .env with your configuration
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```
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Minimal `.env`:
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```env
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DATABASE_URL=postgresql://user:pass@localhost:5432/letzvendor_db
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SECRET_KEY=your-secret-key-here-generate-with-openssl
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ALGORITHM=HS256
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ACCESS_TOKEN_EXPIRE_MINUTES=30
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DEVELOPMENT_MODE=true
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```
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#### 4. Start Application
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```bash
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# Start FastAPI application
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uvicorn main:app --reload --port 8000
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```
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#### 5. Access the Platform
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- **Admin Panel**: http://localhost:8000/admin/
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- **Vendor Login**: http://localhost:8000/vendor/login
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- **Customer Shop**: http://localhost:8000/shop/
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- **API Documentation**: http://localhost:8000/docs
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- **Health Check**: http://localhost:8000/health
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### First Steps
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1. **Login to Admin Panel**
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- URL: http://localhost:8000/admin/
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- Credentials: Created via `create_admin.py`
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2. **Create First Vendor**
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- Navigate to Admin → Vendors
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- Click "Create Vendor"
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- Fill in vendor details (name, code, subdomain)
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- System creates vendor + owner user account
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- Note the temporary password
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3. **Login as Vendor Owner**
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- URL: http://localhost:8000/vendor/login (or subdomain)
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- Use vendor owner credentials
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4. **Import Products from Marketplace**
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- Navigate to Vendor → Marketplace Import
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- Configure Letzshop CSV URL
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- Trigger import job
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- Monitor import status
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5. **Publish Products to Catalog**
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- Review imported products in staging
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- Select products to publish
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- Configure pricing and inventory
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- Publish to customer-facing catalog
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## 📋 API Structure
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### Admin APIs (`/api/v1/admin`)
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**Authentication:**
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```
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POST /auth/login # Admin login
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```
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**Vendor Management:**
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```
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GET /vendors # List all vendors
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POST /vendors # Create vendor with owner
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GET /vendors/{id} # Get vendor details
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PUT /vendors/{id}/verify # Verify/unverify vendor
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PUT /vendors/{id}/status # Toggle active status
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DELETE /vendors/{id} # Delete vendor
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```
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**User Management:**
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```
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GET /users # List all users
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PUT /users/{id}/status # Toggle user status
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```
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**Marketplace Monitoring:**
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```
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GET /marketplace-import-jobs # Monitor all import jobs
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```
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**Dashboard & Statistics:**
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```
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GET /dashboard # Admin dashboard
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GET /dashboard/stats # Comprehensive statistics
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GET /dashboard/stats/marketplace # Marketplace breakdown
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GET /dashboard/stats/platform # Platform-wide metrics
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```
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### Vendor APIs (`/api/v1/vendor`)
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**Authentication:**
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```
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POST /auth/login # Vendor team login
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POST /auth/logout # Logout
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```
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**Dashboard:**
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```
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GET /dashboard/stats # Vendor-specific statistics
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```
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**Product Management:**
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```
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GET /products # List catalog products
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POST /products # Add product to catalog
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GET /products/{id} # Get product details
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PUT /products/{id} # Update product
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DELETE /products/{id} # Remove from catalog
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POST /products/from-import/{id} # Publish from marketplace
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PUT /products/{id}/toggle-active # Toggle product active
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PUT /products/{id}/toggle-featured # Toggle featured status
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```
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**Order Management:**
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```
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GET /orders # List vendor orders
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GET /orders/{id} # Get order details
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PUT /orders/{id}/status # Update order status
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```
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**Marketplace Integration:**
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```
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POST /marketplace/import # Trigger import job
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GET /marketplace/jobs # List import jobs
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GET /marketplace/jobs/{id} # Get job status
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GET /marketplace/products # List staged products
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POST /marketplace/products/publish # Bulk publish to catalog
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```
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**Inventory Management:**
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```
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GET /inventory # List inventory items
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POST /inventory # Add inventory
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PUT /inventory/{id} # Update inventory
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GET /inventory/movements # Inventory movement history
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```
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### Public/Customer APIs (`/api/v1/public/vendors`)
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**Authentication:**
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```
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POST /{vendor_id}/auth/register # Customer registration
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POST /{vendor_id}/auth/login # Customer login
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POST /{vendor_id}/auth/logout # Customer logout
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```
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**Product Browsing:**
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```
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GET /{vendor_id}/products # Browse product catalog
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GET /{vendor_id}/products/{id} # Product details
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GET /{vendor_id}/products/search # Search products
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```
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**Shopping Cart:**
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```
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GET /{vendor_id}/cart/{session} # Get cart
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POST /{vendor_id}/cart/{session}/items # Add to cart
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PUT /{vendor_id}/cart/{session}/items/{id} # Update quantity
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DELETE /{vendor_id}/cart/{session}/items/{id} # Remove item
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DELETE /{vendor_id}/cart/{session} # Clear cart
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```
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**Order Placement:**
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```
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POST /{vendor_id}/orders # Place order
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GET /{vendor_id}/customers/{id}/orders # Order history
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GET /{vendor_id}/customers/{id}/orders/{id} # Order details
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```
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## 🎨 Frontend Architecture
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### Alpine.js Integration
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#### Why Alpine.js?
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- ✅ Lightweight (15KB) - perfect for multi-tenant platform
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- ✅ No build step required - works directly in HTML
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- ✅ Reactive state management - modern UX without complexity
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- ✅ Perfect Jinja2 integration - server + client harmony
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- ✅ Scoped components - natural vendor isolation
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#### Example: Product Detail Page
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```html
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<div x-data="productDetail()" x-init="loadProduct()">
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<!-- Reactive product display -->
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<h1 x-text="product?.title"></h1>
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<p class="price">€<span x-text="product?.price"></span></p>
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<!-- Quantity selector with validation -->
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<input
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type="number"
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x-model.number="quantity"
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:min="product?.min_quantity"
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:max="product?.available_inventory"
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>
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<!-- Add to cart with loading state -->
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<button
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@click="addToCart()"
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:disabled="!canAddToCart || addingToCart"
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>
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<span x-show="!addingToCart">Add to Cart</span>
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<span x-show="addingToCart">Adding...</span>
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</button>
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</div>
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```
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### CSS Architecture
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#### CSS Variables for Multi-Tenant Theming
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```css
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/* Base variables in base.css */
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:root {
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--primary-color: #3b82f6;
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--primary-dark: #2563eb;
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--success-color: #10b981;
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--danger-color: #ef4444;
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--warning-color: #f59e0b;
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/* Typography */
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--font-base: 16px;
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--font-sm: 0.875rem;
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--font-xl: 1.25rem;
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/* Spacing */
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--spacing-sm: 0.5rem;
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--spacing-md: 1rem;
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--spacing-lg: 1.5rem;
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/* Borders & Shadows */
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--radius-md: 0.375rem;
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--shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
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}
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/* Vendor-specific overrides */
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[data-vendor-theme="dark"] {
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--primary-color: #1f2937;
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--background-color: #111827;
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}
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```
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## 🔒 Security Implementation
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### Authentication Flow
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**Admin Login:**
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```
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1. POST /api/v1/admin/auth/login
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2. Verify credentials + admin role
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3. Generate JWT token
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4. Store token in localStorage
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5. Include in Authorization header for protected routes
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```
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**Vendor Team Login:**
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```
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1. POST /api/v1/vendor/auth/login
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2. Detect vendor context (subdomain or path)
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3. Verify credentials + vendor membership
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4. Generate JWT token with vendor context
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5. All subsequent requests validated against vendor
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```
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**Customer Login:**
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```
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1. POST /api/v1/public/vendors/{id}/auth/login
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2. Verify customer credentials for specific vendor
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3. Generate JWT token with customer context
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4. Customer can only access their own data
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```
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### Vendor Context Detection
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```python
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# Automatic vendor detection from:
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1. Subdomain: vendor-a.platform.com
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2. Path parameter: /vendor/VENDOR_A/
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3. JWT token: Embedded vendor_id in claims
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# Complete data isolation:
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- All queries automatically scoped to vendor_id
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- Cross-vendor access prevented at service layer
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- Exception raised if vendor mismatch detected
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```
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### Exception Handling Pattern
|
|
|
|
```python
|
|
# Frontend-friendly error responses
|
|
{
|
|
"detail": "Human-readable error message",
|
|
"error_code": "PRODUCT_NOT_FOUND",
|
|
"status_code": 404,
|
|
"timestamp": "2025-01-10T12:00:00Z",
|
|
"request_id": "abc123"
|
|
}
|
|
|
|
# Consistent error codes across platform
|
|
- VENDOR_NOT_FOUND
|
|
- PRODUCT_NOT_IN_CATALOG
|
|
- INSUFFICIENT_INVENTORY
|
|
- INVALID_ORDER_STATUS
|
|
- UNAUTHORIZED_VENDOR_ACCESS
|
|
```
|
|
|
|
## 📊 Database Schema
|
|
|
|
### Core Tables
|
|
|
|
**Multi-Tenant Foundation:**
|
|
```sql
|
|
vendors # Vendor accounts
|
|
├── users # Platform/admin users
|
|
├── vendor_users # Vendor team members (many-to-many)
|
|
└── roles # Role definitions per vendor
|
|
|
|
customers # Vendor-scoped customers
|
|
└── customer_addresses
|
|
```
|
|
|
|
**Product & Inventory:**
|
|
```sql
|
|
marketplace_products # Imported from marketplaces (staging)
|
|
└── marketplace_import_jobs # Import tracking
|
|
|
|
products # Published vendor catalog
|
|
└── inventory # Stock tracking by location
|
|
└── inventory_movements
|
|
```
|
|
|
|
**Orders & Commerce:**
|
|
```sql
|
|
orders
|
|
├── order_items
|
|
├── shipping_address (FK to customer_addresses)
|
|
└── billing_address (FK to customer_addresses)
|
|
```
|
|
|
|
### Key Relationships
|
|
|
|
```
|
|
Vendor (1) ──→ (N) Products
|
|
Vendor (1) ──→ (N) Customers
|
|
Vendor (1) ──→ (N) Orders
|
|
Vendor (1) ──→ (N) MarketplaceProducts
|
|
|
|
Product (1) ──→ (N) Inventory
|
|
Product (1) ──→ (1) MarketplaceProduct
|
|
|
|
Order (1) ──→ (N) OrderItems
|
|
Order (1) ──→ (1) Customer
|
|
Order (1) ──→ (1) ShippingAddress
|
|
Order (1) ──→ (1) BillingAddress
|
|
```
|
|
|
|
## 🧪 Testing
|
|
|
|
### Current Test Coverage
|
|
|
|
```bash
|
|
# Run all tests
|
|
pytest tests/
|
|
|
|
# Run with coverage
|
|
pytest --cov=app --cov=models --cov=middleware tests/
|
|
|
|
# Run specific test category
|
|
pytest tests/unit/
|
|
pytest tests/integration/
|
|
pytest tests/e2e/
|
|
```
|
|
|
|
### Test Structure
|
|
|
|
- **Unit Tests**: Service layer logic, model validation
|
|
- **Integration Tests**: API endpoints, database operations
|
|
- **E2E Tests**: Complete user workflows (admin creates vendor → vendor imports products → customer places order)
|
|
|
|
## 🚦 Development Status
|
|
|
|
### ✅ Completed Features
|
|
|
|
**Slice 1: Multi-Tenant Foundation**
|
|
- ✅ Admin creates vendors through admin interface
|
|
- ✅ Vendor owner login with context detection
|
|
- ✅ Complete vendor data isolation
|
|
- ✅ Role-based access control
|
|
- ✅ JWT authentication system
|
|
|
|
**Slice 2: Marketplace Integration**
|
|
- ✅ CSV import from Letzshop
|
|
- ✅ Background job processing
|
|
- ✅ Import status tracking
|
|
- ✅ Product staging area
|
|
- 🚧 Real-time Alpine.js status updates
|
|
|
|
**Slice 3: Product Catalog**
|
|
- ✅ Product publishing from marketplace staging
|
|
- ✅ Vendor product catalog management
|
|
- ✅ Product CRUD operations
|
|
- ✅ Inventory tracking
|
|
- ✅ Product filtering and search
|
|
|
|
**Slice 4: Customer Shopping**
|
|
- ✅ Customer service implementation
|
|
- ✅ Customer registration/login
|
|
- ✅ Product browsing interface
|
|
- ✅ Shopping cart with Alpine.js
|
|
- ✅ Product detail page (Alpine.js)
|
|
|
|
**Slice 5: Order Processing**
|
|
- ✅ Order creation from cart
|
|
- ✅ Order management (vendor)
|
|
- ✅ Order history (customer)
|
|
- ✅ Order status tracking
|
|
- ✅ Inventory reservation
|
|
|
|
### 🚧 In Progress (BOOTS)
|
|
|
|
**Current Sprint:**
|
|
- 🚧 Customer account dashboard (Alpine.js)
|
|
- 🚧 Multi-step checkout flow
|
|
- 🚧 Payment integration placeholder (Stripe ready)
|
|
- 🚧 Order confirmation page
|
|
- 🚧 Email notifications (order confirmations)
|
|
|
|
## 📋 Roadmap
|
|
|
|
### Phase 1: Core Platform (90% Complete)
|
|
|
|
- ✅ Multi-tenant architecture
|
|
- ✅ Vendor management
|
|
- ✅ Product catalog system
|
|
- ✅ Order processing
|
|
- ✅ Customer management
|
|
- 🚧 Payment integration (ready for Stripe)
|
|
- 🚧 Email notifications
|
|
|
|
### Phase 2: Advanced Features (Next)
|
|
|
|
- Persistent cart storage (Redis/Database)
|
|
- Order search and filtering
|
|
- Advanced inventory management
|
|
- Product variants support
|
|
- Customer reviews and ratings
|
|
- Vendor analytics dashboard
|
|
|
|
### Phase 3: Enterprise Features (Future)
|
|
|
|
- Multi-language support
|
|
- Advanced reporting and exports
|
|
- Webhook integrations
|
|
- API rate limiting enhancements
|
|
- Performance monitoring
|
|
- Automated backups
|
|
|
|
## 📝 Naming Conventions
|
|
|
|
The project follows strict naming conventions for consistency:
|
|
|
|
### Files
|
|
|
|
- **API files**: Plural (`products.py`, `orders.py`)
|
|
- **Model files**: Singular (`product.py`, `order.py`)
|
|
- **Service files**: Singular + service (`product_service.py`)
|
|
- **Exception files**: Singular (`product.py`, `order.py`)
|
|
|
|
### Terminology
|
|
|
|
- **inventory** (not stock)
|
|
- **vendor** (not shop)
|
|
- **customer** (not user for end-users)
|
|
- **team** (not staff)
|
|
|
|
See `docs/6.complete_naming_convention.md` for full details.
|
|
|
|
## 🤝 Contributing
|
|
|
|
### Development Workflow
|
|
|
|
1. Fork the repository
|
|
2. Create feature branch: `git checkout -b feature/amazing-feature`
|
|
3. Follow existing patterns (service layer, exceptions, Alpine.js)
|
|
4. Add tests for new features
|
|
5. Update API documentation
|
|
6. Submit pull request
|
|
|
|
### Code Quality
|
|
|
|
```bash
|
|
# Format code
|
|
black app/ models/ middleware/
|
|
|
|
# Sort imports
|
|
isort app/ models/ middleware/
|
|
|
|
# Lint
|
|
flake8 app/ models/ middleware/
|
|
```
|
|
|
|
## 📄 License
|
|
|
|
This project is licensed under the MIT License - see the LICENSE file for details.
|
|
|
|
## 🆘 Support
|
|
|
|
### Documentation
|
|
|
|
- **API Reference**: http://localhost:8000/docs
|
|
- **Development Guides**: `/docs/`
|
|
- **Naming Conventions**: `/docs/6.complete_naming_convention.md`
|
|
- **Vertical Slice Plan**: `/docs/3.vertical_slice_roadmap.md`
|
|
|
|
### Key Features
|
|
|
|
- **Zero Build Step**: Frontend works without compilation
|
|
- **Alpine.js Reactive UI**: Modern UX without framework complexity
|
|
- **Service Layer Pattern**: Clean, testable business logic
|
|
- **Exception-First**: Consistent error handling
|
|
- **Multi-Tenant by Design**: Complete vendor isolation
|
|
|
|
---
|
|
|
|
Built with FastAPI, PostgreSQL, Alpine.js, and modern Python patterns for a scalable, maintainable multi-tenant ecommerce platform. 🚀
|