# core/handlers/message.py
from __future__ import annotations

from core.protocol import IncomingMessage, OutgoingMessage, OutgoingTyping


def _start_command(platform: str) -> str:
    return "!start" if platform == "matrix" else "/start"


async def handle_message(event: IncomingMessage, auth_mgr, platform, chat_mgr, settings_mgr) -> list:
    if not await auth_mgr.is_authenticated(event.user_id):
        return [
            OutgoingMessage(
                chat_id=event.chat_id,
                text=f"Введите {_start_command(event.platform)} чтобы начать.",
            )
        ]

    # Voice slot fallback: audio attachment without registered voice_handler
    if event.attachments and event.attachments[0].type == "audio":
        return [OutgoingMessage(
            chat_id=event.chat_id,
            text="Голосовые сообщения скоро поддержим.",
            parse_mode="plain",
        )]

    response = await platform.send_message(
        user_id=event.user_id,
        chat_id=event.chat_id,
        text=event.text,
        attachments=[],
    )

    return [
        OutgoingTyping(chat_id=event.chat_id, is_typing=False),
        OutgoingMessage(chat_id=event.chat_id, text=response.response, parse_mode="markdown"),
    ]