# Deferred processing library
from core.util import logs
from pydantic import BaseModel
from typing import Annotated, Optional
from uuid import UUID
from pydantic import ValidationError
from core.models import QueuedMessage, Message, PersonIdentifier, User
from core.clients import signal
from core.lib.prompts.functions import delete_messages
from asgiref.sync import sync_to_async
from django.conf import settings
from core.clients import signalapi
import asyncio



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 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 signal.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 = []

        # 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}"

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