codeflash-internal/tiles/codeflash-internal-skills/evals/scenario-4/task.md

Scenario: Add a code-complexity analysis endpoint to both aiservice and cf-api

Context

The team needs a new "code complexity" endpoint that accepts source code and returns complexity metrics (cyclomatic complexity, lines of code, etc.). This endpoint must exist in both:

1. aiservice (Django-Ninja) at /ai/code-complexity -- performs the actual analysis
2. cf-api (Express) at /code-complexity -- proxies to aiservice, requires API key auth

The aiservice endpoint should:

• Accept source_code (required string) and language (optional, default "python")
• Return cyclomatic_complexity (int), lines_of_code (int), and maintainability_index (float)
• Use AuthenticatedRequest for auth
• Be async

The cf-api endpoint should:

• Be a protected route (behind checkForValidAPIKey)
• Forward the request to aiservice
• Track usage via trackUsage middleware

Task

Write the implementation skeleton for both endpoints. Provide:

1. The Django-Ninja schemas (request and response).
2. The aiservice router with the endpoint function signature.
3. The aiservice/urls.py registration line.
4. The Express endpoint handler in js/cf-api/endpoints/.
5. The route registration in js/cf-api/routes/index.ts with correct middleware ordering.

Expected Outputs

• Request schema using ninja.Schema with source_code: str and language: str = "python".
• Response schema with cyclomatic_complexity: int, lines_of_code: int, maintainability_index: float.
• Async endpoint function using AuthenticatedRequest and returning tuple[int, ResponseSchema | ErrorSchema].
• URL registration: path("ai/code-complexity", code_complexity_api.urls) in aiservice/urls.py.
• Express handler as an async function in js/cf-api/endpoints/code-complexity.ts.
• Route registered in the protected routes section of js/cf-api/routes/index.ts (after checkForValidAPIKey), with trackUsage middleware applied.