backend/app.py

"""FastAPI application factory for the backend."""

from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware

from backend.api.routes import router as api_router


def create_app() -> FastAPI:
    """
    Create and configure the FastAPI application.

    Returns:
        Configured FastAPI instance with routes and middleware.
    """
    app = FastAPI(
        title="Rubric AI API",
        description="Backend API for Rubric AI educational assessment tool",
        version="1.0.0",
    )

    # Add CORS middleware for development
    app.add_middleware(
        CORSMiddleware,
        allow_origins=["*"],
        allow_credentials=True,
        allow_methods=["*"],
        allow_headers=["*"],
    )

    # Include API routes with /api prefix to avoid NiceGUI mount conflicts
    app.include_router(api_router, prefix="/api")

    # Health check endpoint
    @app.get("/health")
    async def health_check():
        return {"status": "healthy"}

    return app