"""Suppress native chat alerts when the recipient is viewing that chat."""

from communications.presence import user_is_viewing_chat

CHAT_NOTIFICATION_VERBS = {
    "chat_new_message",
    "chat_mention",
    "chat_reply",
    "announcement_new_message",
}


def notification_chat_id(notification) -> int | None:
    if notification.verb not in CHAT_NOTIFICATION_VERBS:
        return None
    data = notification.data if isinstance(notification.data, dict) else {}
    try:
        return int(data.get("chat_id"))
    except (TypeError, ValueError):
        return None


def suppress_native_for_active_chat(notification) -> bool:
    chat_id = notification_chat_id(notification)
    if chat_id is None or not user_is_viewing_chat(
        user_id=notification.recipient_id,
        chat_id=chat_id,
    ):
        return False

    return True