import logging

from yuxi.channel.extensions.intercom.client import IntercomClient

logger = logging.getLogger(__name__)


class HandoffDetector:
    @staticmethod
    async def is_human_takeover(client: IntercomClient, conversation_id: str, bot_admin_id: str) -> bool:
        try:
            conv = await client.get_conversation(conversation_id)
        except Exception:
            logger.warning("Failed to fetch conversation %s for handoff check", conversation_id, exc_info=True)
            return False

        assignee = conv.get("assignee") or {}
        if assignee and assignee.get("type") == "admin":
            admin_id = str(assignee.get("id", ""))
            if admin_id and admin_id != bot_admin_id:
                return True

        return False

    @staticmethod
    async def check_recent_admin_reply(client: IntercomClient, conversation_id: str, bot_admin_id: str) -> bool:
        try:
            parts = await client.get_conversation_parts(conversation_id)
        except Exception:
            logger.warning("Failed to fetch conversation parts for handoff check", exc_info=True)
            return False

        for part in reversed(parts):
            author = part.get("author", {})
            if author.get("type") == "admin" and str(author.get("id", "")) != bot_admin_id:
                return True
            if part.get("part_type") == "comment" and author.get("type") in ("contact", "user"):
                break
        return False

    @staticmethod
    async def get_last_admin_reply_time(client: IntercomClient | None, conversation_id: str, bot_admin_id: str) -> float | None:
        if client is None:
            return None
        try:
            parts = await client.get_conversation_parts(conversation_id)
        except Exception:
            return None
        for part in reversed(parts):
            author = part.get("author", {})
            if author.get("type") == "admin" and str(author.get("id", "")) != bot_admin_id:
                created_at = part.get("created_at", 0)
                return float(created_at) if created_at else None
        return None