feat: add function to send welcome email to previous subscribers (#601)

bd_api/apps/account/signals.py

@@ -1,4 +1,6 @@
 # -*- coding: utf-8 -*-
+from datetime import datetime
+
 from django.conf import settings
 from django.core.mail import EmailMultiAlternatives
 from django.db.models.signals import post_save
@@ -7,7 +9,7 @@
 from django.utils.encoding import force_bytes
 from django.utils.http import urlsafe_base64_encode
 
-from bd_api.apps.account.models import Account
+from bd_api.apps.account.models import Account, Subscription
 from bd_api.apps.account.token import token_generator
 from bd_api.custom.environment import get_frontend_url
 
@@ -47,3 +49,37 @@ def send_activation_email_signal(sender, instance, created, raw, **kwargs):
  """
  if created and not raw and not instance.is_active:
  send_activation_email(instance)
+
+
+def send_welcome_email(account: Account):
+ """Send welcome email to account"""
+ to_email = account.email
+ from_email = settings.EMAIL_HOST_USER
+ subject = "Bem Vindo à Base dos Dados!"
+
+ token = token_generator.make_token(account)
+ uid = urlsafe_base64_encode(force_bytes(account.pk))
+
+ content = render_to_string(
+ "account/welcome_email.html",
+ {
+ "name": account.get_full_name(),
+ "domain": get_frontend_url(),
+ "uid": uid,
+ "token": token,
+ },
+ )
+
+ msg = EmailMultiAlternatives(subject, "", from_email, [to_email])
+ msg.attach_alternative(content, "text/html")
+ msg.send()
+
+
+def send_welcome_email_to_previous_subscribers():
+ """Send welcome email to all previous subscribers"""
+
+ for subscription in Subscription.objects.filter(
+ subscription__status="active",
+ subscription__created__lte=datetime(2023, 12, 1),
+ ).all():
+ send_welcome_email(subscription.admin)