Primera versión del backend

backend/app/main.py

@@ -0,0 +1,46 @@
+from contextlib import asynccontextmanager
+from collections.abc import AsyncIterator
+
+from fastapi import Depends, FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+
+from app.api.routes import exports, generation, health, templates
+from app.core.config import get_settings
+from app.core.errors import register_exception_handlers
+from app.core.middleware import RateLimitMiddleware, RequestSizeLimitMiddleware
+from app.core.security import require_api_key
+from app.db.init_db import init_db
+
+
+@asynccontextmanager
+async def lifespan(_: FastAPI) -> AsyncIterator[None]:
+    init_db()
+    yield
+
+
+def create_app() -> FastAPI:
+    settings = get_settings()
+    app = FastAPI(title=settings.app_name, lifespan=lifespan)
+
+    app.add_middleware(
+        CORSMiddleware,
+        allow_origins=settings.cors_origins,
+        allow_credentials=True,
+        allow_methods=["GET", "POST", "OPTIONS"],
+        allow_headers=["Authorization", "Content-Type", "X-API-Key"],
+    )
+    app.add_middleware(RequestSizeLimitMiddleware, settings=settings)
+    app.add_middleware(RateLimitMiddleware, settings=settings)
+
+    register_exception_handlers(app)
+
+    app.include_router(health.router)
+    protected = [Depends(require_api_key)]
+    app.include_router(templates.router, prefix="/exam", dependencies=protected)
+    app.include_router(generation.router, prefix="/exam", dependencies=protected)
+    app.include_router(exports.router, prefix="/exam", dependencies=protected)
+
+    return app
+
+
+app = create_app()