# Deferred processing library
import asyncio
from typing import Annotated, Optional
from uuid import UUID

from asgiref.sync import sync_to_async
from django.conf import settings
from pydantic import BaseModel, ValidationError

from core.clients import signal, signalapi
from core.lib.prompts.functions import delete_messages
from core.models import Message, PersonIdentifier, QueuedMessage, User
from core.util import logs

log = logs.get_logger("deferred")


class DeferredDetail(BaseModel):
    reply_to_self: bool
    reply_to_others: bool
    is_outgoing_message: bool


class DeferredRequest(BaseModel):
    type: str
    method: str
    user_id: Optional[int] = None
    message_id: Optional[Annotated[str, UUID]] = None
    identifier: Optional[str] = None
    msg: Optional[str] = None
    service: Optional[str] = None
    detail: Optional[DeferredDetail] = None
    attachments: Optional[list] = None


async def send_message(db_obj):
    recipient_uuid = db_obj.session.identifier.identifier
    text = db_obj.text

    send = lambda x: signalapi.send_message_raw(recipient_uuid, x)  # returns ts
    start_t = lambda: signalapi.start_typing(recipient_uuid)
    stop_t = lambda: signalapi.stop_typing(recipient_uuid)

    tss = await natural.natural_send_message(
        text,
        send,
        start_t,
        stop_t,
    )  # list of ts
    # result = await send_message_raw(recipient_uuid, text)
    await sync_to_async(db_obj.delete)()
    result = [x for x in tss if x]  # all trueish ts
    if result:  # if at least one message was sent
        ts1 = result.pop()  # pick a time
        log.info(f"signal message create {text}")
        await sync_to_async(Message.objects.create)(
            user=db_obj.session.user,
            session=db_obj.session,
            custom_author="BOT",
            text=text,
            ts=ts1,  # use that time in db
        )


async def process_deferred(data: dict, **kwargs):
    try:
        validated_data = DeferredRequest(**data)
        log.info(f"Validated Data: {validated_data}")
        # Process the validated data
    except ValidationError as e:
        log.info(f"Validation Error: {e}")
        return

    method = validated_data.method
    user_id = validated_data.user_id
    message_id = validated_data.message_id

    if method == "accept_message":
        try:
            message = await sync_to_async(QueuedMessage.objects.get)(
                user_id=user_id,
                id=message_id,
            )
            log.info(f"Got {message}")
        except QueuedMessage.DoesNotExist:
            log.info(f"Didn't get message from {message_id}")
            return

        if message.session.identifier.service == "signal":
            await send_message(message)

        else:
            log.warning(f"Protocol not supported: {message.session.identifier.service}")
            return
    elif method == "xmpp":  # send xmpp message
        xmpp = kwargs.get("xmpp")
        service = validated_data.service
        msg = validated_data.msg
        attachments = validated_data.attachments

        # Get User from identifier
        identifiers = PersonIdentifier.objects.filter(
            identifier=validated_data.identifier,
            service=service,
        )
        xmpp_attachments = []
        # attachments = []

        # Asynchronously fetch all attachments
        tasks = [signalapi.fetch_signal_attachment(att["id"]) for att in attachments]
        fetched_attachments = await asyncio.gather(*tasks)

        for fetched, att in zip(fetched_attachments, attachments):
            if not fetched:
                log.warning(f"Failed to fetch attachment {att['id']} from Signal.")
                continue

            # Attach fetched file to XMPP
            xmpp_attachments.append(
                {
                    "content": fetched["content"],
                    "content_type": fetched["content_type"],
                    "filename": fetched["filename"],
                    "size": fetched["size"],
                }
            )
        for identifier in identifiers:
            # recipient_jid = f"{identifier.user.username}@{settings.XMPP_ADDRESS}"
            user = identifier.user

            log.info(
                f"Sending {len(xmpp_attachments)} attachments from Signal to XMPP."
            )
            await xmpp.send_from_external(
                user,
                identifier,
                msg,
                validated_data.detail,
                attachments=xmpp_attachments,
            )
    else:
        log.warning(f"Method not yet supported: {method}")
        return