add outgoingemail model, add mailhelper function and worker

src/teams/email.py

@@ -1,4 +1,4 @@
-from utils.email import _send_email
+from utils.email import add_outgoing_email
 import logging
 logger = logging.getLogger("bornhack.%s" % __name__)
 
@@ -9,7 +9,7 @@ def send_add_membership_email(membership):
         'camp': membership.team.camp.title
     }
 
-    return _send_email(
+    return add_outgoing_email(
         text_template='emails/add_membership_email.txt',
         html_template='emails/add_membership_email.html',
         recipient=membership.user.email,
@@ -31,7 +31,7 @@ def send_remove_membership_email(membership):
         text_template = 'emails/unapproved_membership_email.txt',
         html_template = 'emails/unapproved_membership_email.html'
 
-    return _send_email(
+    return add_outgoing_email(
         text_template=text_template,
         html_template=html_template,
         recipient=membership.user.email,
@@ -46,10 +46,12 @@ def send_new_membership_email(membership):
         'camp': membership.team.camp.title
     }
 
-    return _send_email(
+    return add_outgoing_email(
         text_template='emails/new_membership_email.txt',
         html_template='emails/new_membership_email.html',
-        recipient=[resp.email for resp in membership.team.responsible],
+        recipients=', '.join(
+            [resp.email for resp in membership.team.responsible]
+        ),
         formatdict=formatdict,
         subject='New membership request for {} at {}'.format(
             membership.team.name,

src/utils/admin.py

@@ -0,0 +1,8 @@
+from django.contrib import admin
+
+from .models import OutgoingEmail
+
+
+@admin.register(OutgoingEmail)
+class OutgoingEmailAdmin(admin.ModelAdmin):
+    pass

src/utils/email.py

@@ -1,6 +1,8 @@
 from django.core.mail import EmailMultiAlternatives
 from django.conf import settings
 from django.template.loader import render_to_string
+from django.core.validators import validate_email
+from .models import OutgoingEmail
 import logging
 logger = logging.getLogger("bornhack.%s" % __name__)
 
@@ -8,12 +10,11 @@ logger = logging.getLogger("bornhack.%s" % __name__)
 def _send_email(
     text_template,
     recipient,
-    formatdict,
     subject,
-    html_template=None,
+    html_template='',
     sender='BornHack <info@bornhack.dk>',
-    attachment=None,
+    attachment='',
-    attachment_filename=None
+    attachment_filename=''
 ):
     if not isinstance(recipient, list):
         recipient = [recipient]
@@ -22,7 +23,7 @@ def _send_email(
         # put the basic email together
         msg = EmailMultiAlternatives(
             subject,
-            render_to_string(text_template, formatdict),
+            text_template,
             sender,
             recipient,
             [settings.ARCHIVE_EMAIL]
@@ -31,7 +32,7 @@ def _send_email(
         # is there a html version of this email?
         if html_template:
             msg.attach_alternative(
-                render_to_string(html_template, formatdict),
+                html_template,
                 'text/html'
             )
 
@@ -47,3 +48,39 @@ def _send_email(
     msg.send()
 
     return True
+
+
+def add_outgoing_email(
+    text_template,
+    recipients,
+    formatdict,
+    subject,
+    html_template='',
+    sender='BornHack <info@bornhack.dk>',
+    attachment='',
+    attachment_filename=''
+):
+    """ adds an email to the outgoing queue
+        recipients is either just a str email or a str commaseperated emails
+    """
+    text_template = render_to_string(text_template, formatdict)
+
+    if html_template:
+        html_template = render_to_string(html_template, formatdict)
+
+    if ',' in recipients:
+        for recipient in recipients.split(','):
+            validate_email(recipient.strip())
+    else:
+        validate_email(recipients)
+
+    OutgoingEmail.objects.create(
+        text_template=text_template,
+        html_template=html_template,
+        subject=subject,
+        sender=sender,
+        recipient=recipients,
+        attachment=attachment,
+        attachment_filename=attachment_filename
+    )
+    return True

src/utils/models.py

@@ -68,3 +68,14 @@ class CampRelatedModel(CreatedUpdatedModel):
             raise ValidationError('This camp is in read only mode.')
 
         super().delete(**kwargs)
+
+
+class OutgoingEmail(CreatedUpdatedModel):
+    subject = models.CharField(max_length=500)
+    text_template = models.TextField()
+    html_template = models.TextField(blank=True)
+    recipient = models.CharField(max_length=500)
+    sender = models.CharField(max_length=500)
+    attachment = models.CharField(max_length=500, blank=True)
+    attachment_filename = models.CharField(max_length=500, blank=True)
+    processed = models.BooleanField(default=False)

src/utils/outgoingemailworker.py

@@ -0,0 +1,28 @@
+from .models import OutgoingEmail
+from .email import _send_email
+import logging
+logging.basicConfig(level=logging.INFO)
+logger = logging.getLogger('bornhack.%s' % __name__)
+
+
+def do_work():
+    """
+        The outgoing email worker sends emails added to the OutgoingEmail
+        queue.
+    """
+    not_processed_email = OutgoingEmail.objects.filter(processed=False)
+
+    for email in not_processed_email:
+        if ',' in email.recipient:
+            recipient = email.recipient.split(',')
+        else:
+            recipient = [email.recipient]
+
+        _send_email(
+            text_template=email.text_template,
+            recipient=recipient,
+            subject=email.subject,
+            html_template=email.html_template,
+            attachment=email.attachment,
+            attachment_filename=email.attachment_filename
+        )