import datetime
import time

from celery import shared_task
import asyncio
from loguru import logger
from telethon.tl.types import UserStatusOnline, UserStatusOffline, UserStatusRecently

from app.models.user import User
from paper.parser import PaperParser
from app.models.task import Task
from app.extensions import db
from .handlers import run_state, failure_state, success_state

async def add_to_group(session, task, task_self):
    async with PaperParser(session.name) as parser:
        await parser.invite_users(task.collection.users, task.url, task_self)

async def sending_message(session, task, task_self):
    async with PaperParser(session.name) as parser:
        await parser.send_messages(task.collection.users, task.message, task.file, task_self)

async def parse_users(session, task, db, collection):
    async with PaperParser(session.name) as parser:
        users = await parser.get_participants(task.url)

        filtered_users = filter(filter_users, users)

        for user in filtered_users:
            if not User.exist(user.username, collection):
                full = await parser.get_full_info()
                bio = full.full_user.about if full.full_user else None

                db.session.add(
                    User(
                        first_name=user.first_name,
                        last_name=user.last_name,
                        username=user.username,
                        phone=user.phone,
                        description=bio,
                        collection=collection,
                    )
                )
        
                db.session.commit()

def filter_users(user):
    if not user.username or user.bot:
        return False
    
    is_active = False
    if isinstance(user.status, UserStatusOffline):
        was_online = user.status.was_online.replace(tzinfo=datetime.timezone.utc)
        today = datetime.datetime.today().replace(tzinfo=datetime.timezone.utc)
        is_active = was_online + datetime.timedelta(days=5) >= today
    
    if isinstance(user.status, UserStatusOnline) or isinstance(user.status, UserStatusRecently):
        is_active = True
        
    return is_active

@shared_task(bind=True)
def add_to_group_task(self, task_id: int):
    try:
        task: Task = Task.query.get(task_id)
        run_state(self.request.id, task_id)

        session = task.session

        asyncio.run(
            add_to_group(session, task, self)
        )
    
    except Exception as e:
        logger.exception(e)
        failure_state(task_id, e)
    
    else:
        success_state(task_id)


@shared_task(bind=True)
def parse_users_task(self, task_id: int):
    try:
        task: Task = Task.query.get_or_404(task_id)
        session = task.session
        collection = task.collection

        run_state(self.request.id, task_id)

        asyncio.run(
            parse_users(session, task, db, collection)
        )
    
    except Exception as e:
        logger.exception(e)
        failure_state(task_id, e)
    
    else:
        success_state(task_id)


@shared_task(bind=True)
def send_messages_task(self, task_id: int):
    task: Task = Task.query.get(task_id)

    session = task.session
    users = session.users