import celery
import weasyprint
import pytils
from io import BytesIO

from django.conf import settings
from django.template.loader import render_to_string, get_template
from django.core.mail import EmailMessage, EmailMultiAlternatives

from cart.models import Order


@celery.task
def send_user_order_notification(order_id, request):
    """
    Sending Email of order creating
    """
    order = Order.objects.get(id=order_id)
    verb_price = pytils.numeral.in_words(round(order.total_price))
    verb_cur = pytils.numeral.choose_plural(round(order.total_price), ("рубль", "рубля", "рублей"))
    subject = 'Заказ № {}'.format(order.id)
    message = 'Уважаемый, {}, номер Вашего заказа {}. \
        Пожалуйста, совершите платеж по поручению в приложении к этому письму в течение 14 дней.'.format(
        order.customer_name, order.id)
    mail_send = EmailMessage(subject, message, 'admin@myshop.ru', [order.customer_email])

    # html = render_to_string('orders:AdminOrderPDF', args=[order_id])

    html = render_to_string('orders/pdf.html', {**settings.PAY_REQUISITES, 'order': order,
                                                'verb_cur': verb_cur, 'verb_price': verb_price})
    rendered_html = html.encode(encoding="UTF-8")
    out = BytesIO()
    weasyprint.HTML(string=rendered_html).write_pdf(out,
                                                    stylesheets=[
                                                        weasyprint.CSS(settings.STATIC_ROOT + 'css/build.css')])
    order_invoice_name = 'Order_' + order.order_code
    weasyprint.HTML(string=rendered_html, base_url=request.build_absolute_uri()).write_pdf(order_invoice_name,
                                                                                           stylesheets=[weasyprint.CSS(
                                                                                               settings.STATIC_ROOT + '/css/build.css')])
    mail_send.attach('order_{}.pdf'.format(order_id), out.getvalue(), 'application/pdf')
    mail_send.send()
    return mail_send


@celery.task
def send_admin_order_notification(context):
    body = get_template('emails/html/admin_order_request.html')
    body_text = get_template('emails/txt/admin_order_request.txt')

    email = EmailMultiAlternatives(
        context['email']['subject'],
        body_text.render(context['email']),
        context['from_email'],
        context['recipients']
    )

    email.attach_alternative(body.render(context['email']), 'text/html')
    try:
        email.send()
    except Exception as e:
        return False

    return True