"""Theme export: public JSON endpoint, status check, and admin regeneration trigger."""

from typing import Any, Dict

from fastapi import APIRouter, Depends, HTTPException, status

from app.auth import get_current_admin_user
from app.theme_export import get_theme_status, write_theme_json
from app.user_models import User

router = APIRouter()


@router.get("/status")
async def theme_status() -> Dict[str, Any]:
    """Return theme.json file status. Public endpoint."""
    return get_theme_status()


@router.get("")
async def get_theme() -> Dict[str, Any]:
    """Return the current theme as a JSON dict. Public endpoint.

    Also regenerates the theme.json file on disk as a side effect,
    ensuring the file is always up-to-date.
    """
    try:
        theme = await write_theme_json()
    except Exception as e:
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail=f"Failed to generate theme: {e}",
        )
    return theme


@router.post("/regenerate", status_code=200)
async def regenerate_theme(
    _: User = Depends(get_current_admin_user),
) -> Dict[str, Any]:
    """Force regenerate the theme.json file. Admin only.

    Returns the newly generated theme dict.
    """
    try:
        theme = await write_theme_json()
    except Exception as e:
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail=f"Failed to regenerate theme: {e}",
        )
    return theme