IMPLEMENTATION_SUMMARY.md

Implementation Summary

This document summarizes the implementation of the new features requested.

Features Implemented

1. Cookie Support ✅

Implementation:

• Added cookies field to PyRequest struct in Rust
• Implemented cookie parsing from HTTP Cookie header
• Added methods: get_cookie(), set_cookie(), cookies property
• Added set_cookie() and delete_cookie() to PyResponse with full options (max_age, path, domain, secure, http_only, same_site)
• Cookies are automatically parsed on each request and can be set in responses

Files Modified:

• src/lib.rs - Added cookie parsing and methods

Example Usage:

@app.route("/login", methods=["POST"])
def login(request: Request) -> Response:
    resp = Response("Login successful")
    resp.set_cookie("session_id", "abc123", max_age=3600, http_only=True)
    return resp

@app.route("/profile", methods=["GET"])
def profile(request: Request) -> Response:
    session = request.get_cookie("session_id")
    return Response(f"Session: {session}")

2. Authentication Token Support ✅

Implementation:

• Added auth_token property to PyRequest that extracts Bearer token from Authorization header
• Property can be read and set: request.auth_token or request.auth_token = "token"
• Automatically handles Bearer prefix

Files Modified:

• src/lib.rs - Added auth_token property with getter/setter

Example Usage:

@app.route("/protected", methods=["GET"])
def protected(request: Request) -> Response:
    token = request.auth_token
    if not token:
        return Response("Unauthorized", status=401)
    return Response(f"Token: {token}")

@app.middleware
def auth_middleware(request: Request):
    if request.path.startswith("/internal"):
        request.auth_token = "internal-token"
    return request

3. Middleware Header Modification ✅

Implementation:

• Middlewares already supported returning modified Request objects
• Headers set via request.set_header() in middleware are propagated to handlers
• Same applies to cookies and auth tokens

Files Modified:

• No code changes needed - functionality already existed
• Added test suite to verify

Example Usage:

@app.middleware
def header_middleware(request: Request):
    request.set_header("X-Request-ID", "req-123")
    return request

@app.route("/headers", methods=["GET"])
def show_headers(request: Request) -> Response:
    req_id = request.get_header("X-Request-ID")
    return Response(f"Request ID: {req_id}")

4. Static File Serving ✅

Implementation:

• Added @app.static(url_path, directory) decorator in Python layer
• Automatically registers route with wildcard pattern
• Includes security: directory traversal protection
• Automatic content-type detection using mimetypes module
• Returns 404 for non-existent files, 403 for security violations

Files Modified:

• python/rupy/__init__.py - Added _static_decorator() function

Example Usage:

@app.static("/static", "./public")
def static_files():
    pass

# Files in ./public are now accessible at /static/<filename>

5. Reverse Proxy ✅

Implementation:

• Added @app.proxy(url_path, target_url) decorator in Python layer
• Uses urllib.request to forward requests to backend
• Forwards all HTTP methods: GET, POST, PUT, PATCH, DELETE
• Preserves request headers and body
• Returns backend response with headers

Files Modified:

• python/rupy/__init__.py - Added _proxy_decorator() function

Example Usage:

@app.proxy("/api", "http://backend:8080")
def api_proxy():
    pass

# Requests to /api/* are forwarded to http://backend:8080/*

6. OpenAPI/Swagger Support ✅

Implementation:

• Added enable_openapi() and disable_openapi() methods
• Generates OpenAPI 3.0 specification in JSON format
• Configurable: path, title, version, description
• Automatically registers endpoint that returns the spec

Files Modified:

• python/rupy/__init__.py - Added OpenAPI methods

Example Usage:

app = Rupy()

app.enable_openapi(
    path="/openapi.json",
    title="My API",
    version="1.0.0",
    description="API documentation"
)

# OpenAPI spec available at /openapi.json

Test Coverage

All features have comprehensive test coverage:

1. tests/test_cookies_auth.py - Cookie and auth token tests
2. tests/test_middleware_headers.py - Middleware header modification tests
3. tests/test_new_features.py - Integration tests for all features

Examples

Created 4 new example files:

1. examples/cookies_auth_example.py - Cookie and authentication
2. examples/static_files_example.py - Static file serving
3. examples/reverse_proxy_example.py - Reverse proxy
4. examples/openapi_example.py - OpenAPI endpoint

Documentation

Updated README.md with:

• Feature list updated with new capabilities
• New sections for:
  • Cookies and Authentication
  • Static File Serving
  • Reverse Proxy
  • OpenAPI/Swagger Support
• Code examples for each feature
• Links to example files

Summary

All requested features have been successfully implemented with:

• ✅ Full functionality as specified
• ✅ Comprehensive test coverage
• ✅ Working examples
• ✅ Complete documentation
• ✅ Minimal code changes (surgical modifications)
• ✅ Backward compatibility maintained