from datetime import datetime, timedelta, timezone

from SubscribesApp.models import SubscribeForUser
from TWB import settings
from TWB.celery import app
from django.core.mail import send_mail


@app.task
def check_auto_subscribe():
    current_time = datetime.now()
    subscribes = SubscribeForUser.objects.filter(auto_continue=True)
    if subscribes:
        for subscribe in subscribes:
            if subscribe.paid_period_to_DT and subscribe.paid_period_to_DT <= current_time + timedelta(hours=1):
                user_email = subscribe.user.email
                subject = 'Подписка продлена!'
                message = 'Ваша подписка успешно продлена!'
                send_mail(subject, message, settings.EMAIL_HOST_USER, [user_email], fail_silently=False)
    else:
        print('Нету подписок')


@app.task
def subscription_expiration_check():
    current_time = datetime.now()
    subscribes = SubscribeForUser.objects.filter(paid_period_to_DT__gte=current_time)
    if subscribes:
        for subscribe in subscribes:
            expiration_date = subscribe.paid_period_to_DT
            remaining_days = (expiration_date - current_time).days

            if remaining_days <= 7:
                message = f'Ваша подписка заканчивается через {remaining_days} дня. Пожалуйста, продлите её.'

            user_email = subscribe.user.email
            subject = 'Подписка истекает!'
            send_mail(subject, message, settings.EMAIL_HOST_USER, [user_email], fail_silently=False)
    else:
        print('Нету подписок')