from datetime import datetime

from celery import shared_task
from django.core.mail import send_mail
from notification.models import Subscriber
from news import models
from django.template.loader import render_to_string, get_template
from django.conf import settings
from smtplib import SMTPException
from django.core.validators import EMPTY_VALUES
from main.models import SiteSettings


@shared_task
def send_email_with_news(news_ids):
    subscribers = Subscriber.objects.filter(state=Subscriber.USABLE)
    sent_news = models.News.objects.filter(id__in=news_ids)
    htmly = get_template(settings.NEWS_EMAIL_TEMPLATE)
    year = datetime.now().year
    socials = list(SiteSettings.objects.with_country())
    socials = dict(zip(map(lambda s: s.country.code, socials), socials))
    for s in subscribers:
        socials_for_subscriber = socials.get(s.country_code)
        try:
            for n in sent_news:
                context = {"title": n.title.get(s.locale),
                           "subtitle": n.subtitle.get(s.locale),
                           "description": n.description.get(s.locale),
                           "code": s.update_code,
                           "image_url": n.image_url if n.image_url not in EMPTY_VALUES else None,
                           "domain_uri": settings.DOMAIN_URI,
                           "slug": n.slug,
                           "country_code": s.country_code,
                           "twitter_page_url": socials_for_subscriber.twitter_page_url if socials_for_subscriber else '#',
                           "instagram_page_url": socials_for_subscriber.instagram_page_url if socials_for_subscriber else '#',
                           "facebook_page_url": socials_for_subscriber.facebook_page_url if socials_for_subscriber else '#',
                           "send_to": s.send_to,
                           "year": year}
                send_mail("G&M News", render_to_string(settings.NEWS_EMAIL_TEMPLATE, context),
                          settings.EMAIL_HOST_USER, [s.send_to], fail_silently=False,
                          html_message=htmly.render(context))
        except SMTPException:
            continue