"""
Defines Flask routes for handling call by category

This module contains API endpoints for managing and retrieving categories
from the MongoDB database. 

Routes:
    - GET /category: Fetch all categories.
"""
from fastapi import APIRouter
from fastapi.responses import JSONResponse
from controllers.category import get_categories # pylint: disable=import-error

router = APIRouter(prefix="/category", tags=["category"])

@router.get("")
async def fetch_categories() -> JSONResponse:
    """
    Handles GET requests to retrieve all categories.

    Returns:
        list[dict]: JSON response containing categories and their associated sites.
    """
    try:
        category_data = get_categories()
        return JSONResponse(content=category_data)
    except (ConnectionError, TimeoutError, ValueError) as e:
        return JSONResponse(content={"error": str(e)}, status_code=400)
    except Exception as e: #pylint: disable=broad-except
        return JSONResponse(content={"error": str(e)}, status_code=500)