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from time import sleep
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from django.core.mail import EmailMultiAlternatives
from django.template.loader import render_to_string
from django.utils.encoding import smart_str
from .models import Subscriber, MailingStatus
class SendShit():
def __init__(self, newsletter, mailing, verbose=0):
self.verbose = verbose
self.newsletter = newsletter
self.mailing = mailing
all_subscribers = Subscriber.objects.filter(newsletter=self.newsletter,subscribed=True,unsubscribed=False).values('email_field')
already_sent = MailingStatus.objects.filter(newsletter_mailing=self.mailing,status=1).values('subscriber__email_field')
self.subscribers = all_subscribers.difference(already_sent)
def send_mailings(self):
mailings = len(self.subscribers)
print("mailing newsletter to %s subscribers"%mailings)
i = 1
for s in self.subscribers:
subscriber = Subscriber.objects.get(newsletter=self.newsletter,email_field=s['email_field'],subscribed=True,unsubscribed=False)
status = None
if self.verbose == 1:
print("mailing newsletter %s of %s to %s" %(i,mailings,subscriber))
status, created = MailingStatus.objects.get_or_create(
newsletter_mailing=self.mailing,
subscriber=subscriber,
)
# New instance, try sending
if created:
try:
email = self.build_message(subscriber)
status.status=1
if self.verbose==1:
print("successfully sent %s the newsletter mailing %s"%(subscriber, self.mailing))
except:
status.status=2
if self.verbose == 1:
print("failed to send %s to %s"%(self.mailing, subscriber))
status.save()
else:
# not new, check if error and resend or just continue
if status.status == 2:
if self.verbose==1:
print("retrying error")
try:
email = self.build_message(subscriber)
status.status=1
if self.verbose==1:
print("successfully sent %s the newsletter mailing %s"%(subscriber, self.mailing))
except:
status.status=2
if self.verbose == 1:
print("failed to send %s to %s"%(self.mailing, subscriber))
status.save()
i=i+1
sleep(2)
def build_message(self, subscriber):
"""
Build the email as plain text with a
a multipart alternative for HTML
"""
subject = smart_str("%s: %s — %s" %(self.mailing.newsletter.title, self.mailing.get_issue_str(), self.mailing.title))
from_email, to = 'Scott Gilbertson <sng@luxagraf.net>', subscriber.get_email()
text_content = render_to_string('lttr/emails/friends_plain_text_email.txt', {'object': self.mailing, 'subscriber':subscriber})
html_content = render_to_string('lttr/emails/friends_html_email.html', {'object': self.mailing, 'subscriber':subscriber})
#print(text_content)
msg = EmailMultiAlternatives(subject, text_content, from_email, [to])
msg.attach_alternative(html_content, "text/html")
msg.send()
'''
for header, value in self.newsletter.server.custom_headers.items():
message[header] = value
'''
return msg
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