send alert for low priced bounty creation

app/dashboard/models.py

@@ -49,6 +49,7 @@
     _AUTH, HEADERS, TOKEN_URL, build_auth_dict, get_gh_issue_details, get_issue_comments, issue_number, org_name,
     repo_name,
 )
+from marketing.mails import low_bounty_alert
 from marketing.models import LeaderboardRank
 from rest_framework import serializers
 from web3 import Web3
@@ -988,6 +989,18 @@ def additional_funding_summary_sentence(self):
         return sentence
 
 
+LOW_BOUNTY_THRESHOLD = 5.0
+
+
+@receiver(post_save, sender=Bounty)
+def alert_low_bounty(sender, **kwargs):
+    """Alert when a bounty with a low price is created."""
+    bounty = kwargs.get('instance')
+    usdt_value = bounty.get_value_in_usdt_now
+    if(kwargs.get('created') is True and usdt_value and usdt_value < LOW_BOUNTY_THRESHOLD):
+        low_bounty_alert(bounty)
+
+
 class BountyFulfillmentQuerySet(models.QuerySet):
     """Handle the manager queryset for BountyFulfillments."""
 

app/dashboard/tests/test_dashboard_models.py

@@ -18,6 +18,7 @@
 
 """
 from datetime import date, datetime, timedelta
+from unittest.mock import patch
 
 from django.conf import settings
 from django.contrib.humanize.templatetags.humanize import naturaltime
@@ -464,3 +465,49 @@ def test_bounty_clean_gh_url_on_save():
         )
         assert bounty.github_url == 'https://github.com/gitcoinco/web/issues/305'
         bounty.delete()
+
+    @patch('marketing.mails.send_mail')
+    def test_low_bounty_alert(self, mock_send_mail):
+        """Test that an alert email is sent when a bounty with a low value is created"""
+        Bounty.objects.create(
+            title='Low Value Bounty',
+            value_in_token=1 * 1e18,
+            token_name='ETH',
+            web3_created=datetime(2008, 10, 31, tzinfo=pytz.UTC),
+            github_url='https://github.com/gitcoinco/web/issues/305#issuecomment-999999999',
+            token_address='0x0000000000000000000000000000000000000000',
+            issue_description='hello world',
+            bounty_owner_github_username='flintstone',
+            is_open=False,
+            accepted=False,
+            expires_date=datetime(2008, 11, 30, tzinfo=pytz.UTC),
+            idx_project_length=5,
+            project_length='Months',
+            bounty_type='Feature',
+            experience_level='Intermediate',
+            raw_data={},
+        )
+        assert mock_send_mail.call_count == 1
+
+    @patch('marketing.mails.send_mail')
+    def test_no_bounty_alert_for_reasonable_bounties(self, mock_send_mail):
+        """Test that no alert email is sent when a bounty with a reasonable price is created."""
+        Bounty.objects.create(
+            title='Reasonable Value Bounty',
+            value_in_token=3 * 1e18,
+            token_name='ETH',
+            web3_created=datetime(2008, 10, 31, tzinfo=pytz.UTC),
+            github_url='https://github.com/gitcoinco/web/issues/305#issuecomment-999999999',
+            token_address='0x0000000000000000000000000000000000000000',
+            issue_description='hello world',
+            bounty_owner_github_username='flintstone',
+            is_open=False,
+            accepted=False,
+            expires_date=datetime(2008, 11, 30, tzinfo=pytz.UTC),
+            idx_project_length=5,
+            project_length='Months',
+            bounty_type='Feature',
+            experience_level='Intermediate',
+            raw_data={},
+        )
+        assert mock_send_mail.call_count == 0

app/marketing/mails.py

@@ -874,6 +874,29 @@ def setup_lang(to_email):
         translation.activate(preferred_language)
 
 
+def low_bounty_alert(bounty):
+    to_email = '[email protected]'
+    from_email = bounty.bounty_owner_email or settings.SERVER_EMAIL
+    cur_language = translation.get_language()
+    try:
+        setup_lang(to_email)
+        subject = _("Low Bounty Alert")
+        body_str = _("A low bounty was set from")
+        body = f"{body_str} {bounty.bounty_owner_name} ({bounty.bounty_owner_email}):"\
+            f"{settings.BASE_URL}_administrationdashboard/bounty/{bounty.pk}/change\n\n"\
+            f"Github: {bounty.github_url}\n"
+        send_mail(
+            from_email,
+            to_email,
+            subject,
+            body,
+            from_name=_("No Reply from Gitcoin.co"),
+            categories=['admin'],
+        )
+    finally:
+        translation.activate(cur_language)
+
+
 def new_bounty_request(model):
     to_email = '[email protected]'
     from_email = model.requested_by.email or settings.SERVER_EMAIL