import asyncio

from fastapi import HTTPException

from trauma.api.account.dto import AccountType
from trauma.api.account.model import AccountModel
from trauma.api.chat.model import ChatModel
from trauma.api.data.model import EntityModel
from trauma.api.message.dto import Author
from trauma.api.message.model import MessageModel
from trauma.api.message.schemas import CreateMessageRequest
from trauma.core.config import settings
from trauma.core.wrappers import background_task


async def create_message_obj(
        chat_id: str, message_data: CreateMessageRequest
) -> tuple[MessageModel, ChatModel]:
    chat = await settings.DB_CLIENT.chats.find_one({"id": chat_id})
    if not chat:
        raise HTTPException(status_code=404, detail="Chat not found.")

    message = MessageModel(**message_data.model_dump(), chatId=chat_id, author=Author.User)
    await settings.DB_CLIENT.messages.insert_one(message.to_mongo())

    return message, chat


async def get_all_chat_messages_obj(chat_id: str, account: AccountModel) -> 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": chat_id})
    )
    messages = [MessageModel.from_mongo(message) for message in messages]

    if not chat:
        raise HTTPException(status_code=404, detail="Chat not found")

    chat = ChatModel.from_mongo(chat)
    if chat.account.id != account.id and account.accountType != AccountType.Admin:
        raise HTTPException(status_code=404, detail="Not Authorized.")
    return messages, chat


@background_task()
async def update_entity_data_obj(entity_data: dict, chat_id: str) -> None:
    await settings.DB_CLIENT.chats.update_one(
        {"id": chat_id},
        {"$set": {
            "entityData": entity_data,
        }}
    )


@background_task()
async def save_assistant_user_message(user_message: str, assistant_message: str, chat_id: str) -> None:
    user_message = MessageModel(chatId=chat_id, author=Author.User, text=user_message)
    assistant_message = MessageModel(chatId=chat_id, author=Author.Assistant, text=assistant_message)
    await settings.DB_CLIENT.messages.insert_one(user_message.to_mongo())
    await settings.DB_CLIENT.messages.insert_one(assistant_message.to_mongo())


async def filter_entities_by_age_location(entity_data: dict) -> list[int]:
    query = {
        "ageGroups": {
            "$elemMatch": {
                "ageMin": {"$lte": entity_data['age']},
                "ageMax": {"$gte": entity_data['age']}
            }
        },
    }
    if entity_data.get('location'):
        query["contactDetails.address"] = {
            "$regex": f".*{entity_data['location']}.*",
            "$options": "i"
        }

    if entity_data.get('postalCode'):
        query["contactDetails.postalCode"] = {
            "$regex": f".*{entity_data['postalCode']}.*",
            "$options": "i"
        }
    entities = await settings.DB_CLIENT.entities.find(query, {"embedding": 0}).to_list(length=None)
    return [entity['index'] for entity in entities]


async def get_entity_by_index(index: int) -> EntityModel:
    entity = await settings.DB_CLIENT.entities.find_one({"index": index})
    return EntityModel.from_mongo(entity)