add new command for send mail to admins

idhub/management/commands/send_mail_admins.py

@@ -0,0 +1,56 @@
+import logging
+
+from urllib.parse import urlparse
+
+from django.conf import settings
+from django.template import loader
+from django.core.mail import EmailMultiAlternatives
+from django.core.management.base import BaseCommand
+from django.contrib.auth import get_user_model
+
+
+logger = logging.getLogger(__name__)
+User = get_user_model()
+
+
+class Command(BaseCommand):
+    help = "Send mails to the admins for add general key"
+    subject_template_name = 'idhub/admin/registration/start_app_admin_subject.txt'
+    email_template_name = 'idhub/admin/registration/start_app_admin_email.txt'
+    html_email_template_name = 'idhub/admin/registration/start_app_admin_email.html'
+
+    def handle(self, *args, **kwargs):
+        for user in User.objects.filter(is_admin=True):
+            self.send_email(user)
+
+    def send_email(self, user):
+        """
+        Send a email when a user is activated.
+        """
+        parsed_url = urlparse(settings.RESPONSE_URI)
+        domain = f"{parsed_url.scheme}://{parsed_url.netloc}/"
+        context = {
+            "domain": domain,
+        }
+        subject = loader.render_to_string(self.subject_template_name, context)
+        # Email subject *must not* contain newlines
+        subject = ''.join(subject.splitlines())
+        body = loader.render_to_string(self.email_template_name, context)
+        from_email = settings.DEFAULT_FROM_EMAIL
+        to_email = user.email
+
+        email_message = EmailMultiAlternatives(
+            subject, body, from_email, [to_email])
+        html_email = loader.render_to_string(self.html_email_template_name, context)
+        email_message.attach_alternative(html_email, 'text/html')
+        try:
+            if settings.ENABLE_EMAIL:
+                email_message.send()
+                return
+
+            logger.warning(to_email)
+            logger.warning(body)
+
+        except Exception as err:
+            logger.error(err)
+            return