import json
import logging

from capa_de_integracion.config import Settings
from capa_de_integracion.models.quick_replies import (
    QuickReplyQuestions,
    QuickReplyScreen,
)

logger = logging.getLogger(__name__)


class QuickReplyContentService:
    """Service for loading quick reply screen content from JSON files."""

    def __init__(self, settings: Settings) -> None:
        """Initialize quick reply content service.

        Args:
            settings: Application settings

        """
        self.settings = settings
        self.quick_replies_path = settings.base_path / "quick_replies"

        logger.info(
            f"QuickReplyContentService initialized with path: {self.quick_replies_path}",
        )

    async def get_quick_replies(self, screen_id: str) -> QuickReplyScreen:
        """Load quick reply screen content by ID.

        Args:
            screen_id: Screen identifier (e.g., "pagos", "home")

        Returns:
            Quick reply DTO

        Raises:
            ValueError: If the quick reply file is not found

        """
        if not screen_id or not screen_id.strip():
            logger.warning("screen_id is null or empty. Returning empty quick replies")
            return QuickReplyScreen(
                header="empty",
                body=None,
                button=None,
                header_section=None,
                preguntas=[],
            )

        file_path = self.quick_replies_path / f"{screen_id}.json"

        try:
            if not file_path.exists():
                logger.warning(f"Quick reply file not found: {file_path}")
                msg = f"Quick reply file not found for screen_id: {screen_id}"
                raise ValueError(
                    msg,
                )

            with open(file_path, encoding="utf-8") as f:
                data = json.load(f)

            # Parse questions
            preguntas_data = data.get("preguntas", [])
            preguntas = [
                QuickReplyQuestions(
                    titulo=q.get("titulo", ""),
                    descripcion=q.get("descripcion"),
                    respuesta=q.get("respuesta", ""),
                )
                for q in preguntas_data
            ]

            quick_reply = QuickReplyScreen(
                header=data.get("header"),
                body=data.get("body"),
                button=data.get("button"),
                header_section=data.get("header_section"),
                preguntas=preguntas,
            )

            logger.info(
                f"Successfully loaded {len(preguntas)} quick replies for screen: {screen_id}",
            )
            return quick_reply

        except json.JSONDecodeError as e:
            logger.error(f"Error parsing JSON file {file_path}: {e}", exc_info=True)
            msg = f"Invalid JSON format in quick reply file for screen_id: {screen_id}"
            raise ValueError(
                msg,
            ) from e
        except Exception as e:
            logger.error(
                f"Error loading quick replies for screen {screen_id}: {e}",
                exc_info=True,
            )
            msg = f"Error loading quick replies for screen_id: {screen_id}"
            raise ValueError(
                msg,
            ) from e