import logging

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

from backend.api.routes import health, query, repo, upload
from backend.core.config import settings
from backend.core.logging import configure_logging

configure_logging()
logger = logging.getLogger(__name__)

app = FastAPI(title=settings.app_name)

app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

app.include_router(health.router, prefix=settings.api_prefix)
app.include_router(upload.router, prefix=settings.api_prefix)
app.include_router(repo.router, prefix=settings.api_prefix)
app.include_router(query.router, prefix=settings.api_prefix)


@app.exception_handler(Exception)
async def unhandled_exception_handler(request, exc: Exception):
    logger.exception("Unhandled request error: %s %s", request.method, request.url)
    detail = str(exc) if settings.debug_errors else "Internal Server Error"
    return JSONResponse(status_code=500, content={"detail": detail})


@app.get("/")
def root() -> dict[str, str]:
    return {"message": settings.app_name, "docs": "/docs"}