import re
import logging

logger = logging.getLogger(__name__)

MENTION_PATTERN = re.compile(r"@\[([^\]]+)\]\(mention:(\d+)\)")


class WorkplaceMentions:
    @staticmethod
    def extract_mentions(raw_message: dict) -> list[str]:
        text = raw_message.get("message", {}).get("text", "")
        if not text:
            return []

        matches = MENTION_PATTERN.findall(text)
        mentioned_ids = [user_id for _, user_id in matches]
        logger.debug("Extracted workplace mentions: %s", mentioned_ids)
        return mentioned_ids

    @staticmethod
    def is_bot_mentioned(raw_message: dict, bot_page_id: str) -> bool:
        text = raw_message.get("message", {}).get("text", "")
        if not text:
            return False

        pattern = re.compile(rf"@\[([^\]]*)\]\(mention:({re.escape(bot_page_id)})\)")
        return bool(pattern.search(text))

    @staticmethod
    def strip_mentions(text: str) -> str:
        return MENTION_PATTERN.sub(r"@\1", text)