from __future__ import annotations

from dataclasses import dataclass

from slack_sdk.errors import SlackApiError

from yuxi.utils.logging_config import logger


@dataclass
class RoomContext:
    topic: str = ""
    purpose: str = ""
    channel_name: str = ""

    @property
    def is_empty(self) -> bool:
        return not (self.topic or self.purpose or self.channel_name)

    def to_system_prompt_fragment(self) -> str:
        parts = []
        if self.channel_name:
            parts.append(f"频道名称: #{self.channel_name}")
        if self.topic:
            parts.append(f"频道主题: {self.topic}")
        if self.purpose:
            parts.append(f"频道用途: {self.purpose}")
        return "\n".join(parts)


async def extract_room_context(
    client,
    channel_id: str,
) -> RoomContext:
    try:
        if not channel_id or channel_id.startswith("D"):
            return RoomContext()

        resp = await client.conversations_info(channel=channel_id)
        ch = resp.get("channel", {})
        return RoomContext(
            topic=ch.get("topic", {}).get("value", ""),
            purpose=ch.get("purpose", {}).get("value", ""),
            channel_name=ch.get("name", ""),
        )
    except SlackApiError as e:
        logger.debug(f"Failed to extract room context for {channel_id}: {e}")
        return RoomContext()
    except Exception:
        logger.debug(f"Room context extraction failed for {channel_id}", exc_info=True)
        return RoomContext()