from __future__ import annotations

import logging
from datetime import datetime, timezone

logger = logging.getLogger(__name__)


def convert_webhook_to_message(payload: dict, account: dict) -> dict | None:
    inner = payload.get("payload", {}).get("object", {})
    if not inner:
        logger.warning("Empty Zoom webhook payload")
        return None

    message_id = inner.get("id", "")
    sender_email = inner.get("sender", "")
    content = inner.get("message", "")
    channel_id = inner.get("channel_id", "")
    timestamp_str = inner.get("date_time", "")
    chat_type = inner.get("chat_type", "group")
    thread_root_id = inner.get("thread_root_message_id") or None
    files = inner.get("files", [])

    bot_user_id = account.get("bot_user_id", "")
    if sender_email == bot_user_id:
        logger.debug("Skipping self-sent message from bot: %s", message_id)
        return None

    timestamp = None
    try:
        timestamp = datetime.fromisoformat(timestamp_str.replace("Z", "+00:00"))
    except (ValueError, TypeError):
        timestamp = datetime.now(timezone.utc)

    was_mentioned = _check_bot_mentioned(content, account)

    kind = "direct" if chat_type == "1on1" else "group"

    media_urls = []
    for f in files:
        url = f.get("download_url") or f.get("url") or f.get("href")
        if url:
            media_urls.append(url)

    return {
        "msg_id": message_id,
        "channel_type": "zoomchat",
        "account_id": account.get("account_id", ""),
        "content": content,
        "sender": {
            "id": sender_email,
            "display_name": sender_email,
            "kind": kind,
            "is_bot": False,
            "is_self": False,
        },
        "group": {"id": channel_id, "name": channel_id, "kind": kind} if kind == "group" else None,
        "timestamp": timestamp,
        "was_mentioned": was_mentioned,
        "message_thread_id": thread_root_id,
        "reply_to_id": thread_root_id,
        "media_urls": media_urls,
        "raw_payload": payload,
    }


def _check_bot_mentioned(content: str, account: dict) -> bool:
    if not content:
        return False
    bot_email = account.get("bot_user_email", "")
    if bot_email and bot_email.lower() in content.lower():
        return True
    return True