"""
Settings API endpoints.

Управление настройками пользователя для всех трех окружений (IFT, PSI, PROD).
"""

from fastapi import APIRouter, Depends, HTTPException, status
from app.models.settings import UserSettings, UserSettingsUpdate
from app.interfaces.db_api_client import DBApiClient
from app.dependencies import get_db_client, get_current_user
import httpx
import logging

logger = logging.getLogger(__name__)

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


@router.get("", response_model=UserSettings)
async def get_settings(
    current_user: dict = Depends(get_current_user),
    db_client: DBApiClient = Depends(get_db_client)
):
    """
    Получить настройки пользователя для всех окружений.

    Returns:
        UserSettings: Настройки пользователя для IFT, PSI, PROD
    """
    user_id = current_user["user_id"]

    try:
        settings = await db_client.get_user_settings(user_id)
        return settings
    except httpx.HTTPStatusError as e:
        if e.response.status_code == 404:
            raise HTTPException(
                status_code=status.HTTP_404_NOT_FOUND,
                detail="User settings not found"
            )
        logger.error(f"Failed to get user settings: {e}")
        raise HTTPException(
            status_code=status.HTTP_502_BAD_GATEWAY,
            detail="Failed to retrieve settings from DB API"
        )
    except Exception as e:
        logger.error(f"Unexpected error getting user settings: {e}")
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail="Internal server error"
        )


@router.patch("", response_model=UserSettings)
async def update_settings(
    settings_update: UserSettingsUpdate,
    current_user: dict = Depends(get_current_user),
    db_client: DBApiClient = Depends(get_db_client)
):
    """
    Частично обновить настройки пользователя.

    Обновляются только переданные поля. Непереданные поля остаются без изменений.

    Args:
        settings_update: Частичные настройки для одного или нескольких окружений

    Returns:
        UserSettings: Обновленные настройки со всеми полями
    """
    user_id = current_user["user_id"]

    try:
        updated_settings = await db_client.update_user_settings(user_id, settings_update)
        return updated_settings
    except httpx.HTTPStatusError as e:
        if e.response.status_code == 404:
            raise HTTPException(
                status_code=status.HTTP_404_NOT_FOUND,
                detail="User not found"
            )
        elif e.response.status_code == 400:
            raise HTTPException(
                status_code=status.HTTP_400_BAD_REQUEST,
                detail="Invalid settings format"
            )
        logger.error(f"Failed to update user settings: {e}")
        raise HTTPException(
            status_code=status.HTTP_502_BAD_GATEWAY,
            detail="Failed to update settings in DB API"
        )
    except Exception as e:
        logger.error(f"Unexpected error updating user settings: {e}")
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail="Internal server error"
        )