"""
Superadmin endpoint for managing default device configuration.
"""

import json
from pathlib import Path
from typing import Annotated

from fastapi import APIRouter, Depends, HTTPException, status
from pydantic import BaseModel

from app.api.deps import get_current_superadmin
from app.models.user import User

router = APIRouter()

DEFAULT_CONFIG_PATH = Path(__file__).parent.parent.parent.parent / "default_config.json"


@router.get("/default-config")
async def get_default_config(
    current_user: Annotated[User, Depends(get_current_superadmin)],
):
    """
    Get default device configuration (superadmin only).

    Returns the default config that will be copied to newly registered devices.
    """
    try:
        with open(DEFAULT_CONFIG_PATH, "r") as f:
            config = json.load(f)
        return config
    except FileNotFoundError:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="Default config file not found",
        )
    except json.JSONDecodeError:
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail="Invalid JSON in default config file",
        )


@router.put("/default-config")
async def update_default_config(
    config: dict,
    current_user: Annotated[User, Depends(get_current_superadmin)],
):
    """
    Update default device configuration (superadmin only).

    Updates the default config file. Changes only affect newly registered devices.
    Existing devices keep their current configuration.
    """
    try:
        # Write config to file with pretty formatting
        with open(DEFAULT_CONFIG_PATH, "w") as f:
            json.dump(config, f, indent=2)

        return {"success": True, "message": "Default config updated"}
    except Exception as e:
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail=f"Failed to save config: {str(e)}",
        )