import asyncio
from fastapi import HTTPException
from bson import ObjectId
from cbh.api.chat.model import ChatModel
from cbh.api.message.model import MessageModel
from cbh.api.message.schemas import CreateMessageRequest
from cbh.core.config import settings        


async def get_all_chat_messages_obj(chat_id: str) -> tuple[list[MessageModel], ChatModel]:
    messages, chat = await asyncio.gather(
        settings.DB_CLIENT.messages.find({"chatId": chat_id}).to_list(length=None),
        settings.DB_CLIENT.chats.find_one({"_id": ObjectId(chat_id)})
    )
    messages = [MessageModel.from_mongo(message) for message in messages]
    if not chat:
        raise HTTPException(status_code=404, detail="Chat not found")
    return messages, ChatModel.from_mongo(chat)


async def create_message_obj(chat_id: str, message: CreateMessageRequest) -> MessageModel:
    chat = await settings.DB_CLIENT.chats.find_one({"_id": ObjectId(chat_id)})
    if not chat:
        raise HTTPException(status_code=404, detail="Chat not found")
    message = MessageModel(chatId=chat_id,
                           author=message.author,
                           text=message.text,
                           moduleResponse=message.moduleResponse)
    await settings.DB_CLIENT.messages.insert_one(message.to_mongo())
    return message