# Configurable Mock API with Admin Interface - Project Plan

## Architecture Decisions (from @architect)

### Technology Stack
- **Framework**: FastAPI (over Flask) for automatic API documentation, async support, type safety.
- **Server**: Waitress as production WSGI server.
- **Database**: SQLite with SQLAlchemy ORM, aiosqlite for async.
- **Template Engine**: Jinja2 with sandboxed environment.
- **Admin UI**: Custom Jinja2 templates with Bootstrap 5 CDN, session-based authentication.

### Database Schema
- **endpoints** table: id, route (VARCHAR), method (VARCHAR), response_body (TEXT), response_code (INTEGER), content_type (VARCHAR), is_active (BOOLEAN), variables (JSON), headers (JSON), delay_ms (INTEGER), created_at, updated_at.
- Unique constraint on (route, method).

### Application Architecture
- Repository-Service-Controller pattern with Observer pattern for dynamic route updates.
- Modules: database, models, repositories, services, controllers, observers, schemas, middleware, utils.

### Dynamic Route Registration
- RouteManager service registers/unregisters endpoints at runtime via FastAPI's `add_api_route`.
- Observer pattern triggers route refresh on CRUD operations.

### Template Variable Rendering
- Variable sources: path params, query params, request headers, request body, system variables, endpoint defaults.
- Jinja2 with StrictUndefined to prevent silent failures.

### Admin Interface
- Simple credential store (admin username/password hash from env vars).
- Session-based authentication with middleware protecting `/admin/*` routes.
- Pages: Login, Dashboard, Endpoint List, Endpoint Editor, Request Logs (optional).

## Project Structure
```
mock_api_app/              # Align with user request
├── app.py
├── config.py
├── database.py
├── dependencies.py
├── middleware/
├── models/
├── repositories/
├── services/
├── controllers/
├── observers/
├── schemas/
├── static/
├── templates/
├── utils/
├── requirements.txt
├── README.md
└── .env.example
```

## Roadmap

### Phase 1: Foundation
- [x] Create project directory and structure
- [x] Set up SQLAlchemy model `Endpoint`
- [x] Configure FastAPI app with Jinja2 templates
- [x] Write `requirements.txt`

### Phase 2: Core Services
- [x] Implement `EndpointRepository`
- [x] Implement `RouteManager` service
- [x] Implement `TemplateService` with variable resolution

### Phase 3: Admin Interface
- [x] Authentication middleware
- [x] Admin controller routes
- [x] HTML templates (Bootstrap 5 CDN)

### Phase 4: Integration
- [x] Connect route observer
- [x] Add request logging (optional)
- [x] Health check endpoints

### Phase 5: Production Ready
- [x] Waitress configuration
- [x] Environment variable configuration
- [x] Comprehensive README

## Dependencies
See `requirements.txt` in architect spec.

## Security Considerations
- Template sandboxing
- SQL injection prevention via ORM
- Admin authentication with bcrypt
- Route validation to prevent path traversal

## Status Log
- 2025-03-13: Architectural specification completed by @architect.
- 2025-03-13: Project plan created.
- 2026-03-14: Project cleanup and optimization completed. All phases implemented. Integration tests passing. Project ready for demonstration/testing.

## Current Status (2026-03-14)
- ✅ Phase 1: Foundation completed
- ✅ Phase 2: Core Services completed
- ✅ Security fixes applied (critical issues resolved)
- ✅ Phase 3: Admin Interface completed
- ✅ Phase 4: Integration completed
- ✅ Phase 5: Production Ready completed

## Next Steps
1. Deploy to production environment (if needed).
2. Add advanced features: request logging, analytics, multi-user support.
3. Expand test coverage for repository and service layers.