send a reminder when a coinbase subscription is ending soon

cron.py

@@ -42,6 +42,7 @@ from app.models import (
     Mailbox,
     Monitoring,
     Contact,
+    CoinbaseSubscription,
 )
 from server import create_app
 
@@ -114,7 +115,7 @@ def notify_manual_sub_end():
             LOG.debug("Remind user %s that their manual sub is ending soon", user)
             send_email(
                 user.email,
-                f"Your trial will end soon {user.name}",
+                f"Your subscription will end soon {user.name}",
                 render(
                     "transactional/manual-subscription-end.txt",
                     name=user.name,
@@ -129,6 +130,42 @@ def notify_manual_sub_end():
                 ),
             )
 
+    extend_subscription_url = URL + "/dashboard/extend_subscription"
+    for coinbase_subscription in CoinbaseSubscription.query.all():
+        need_reminder = False
+        if (
+            arrow.now().shift(days=14)
+            > coinbase_subscription.end_at
+            > arrow.now().shift(days=13)
+        ):
+            need_reminder = True
+        elif (
+            arrow.now().shift(days=4)
+            > coinbase_subscription.end_at
+            > arrow.now().shift(days=3)
+        ):
+            need_reminder = True
+
+        if need_reminder:
+            user = coinbase_subscription.user
+            LOG.debug(
+                "Remind user %s that their coinbase subscription is ending soon", user
+            )
+            send_email(
+                user.email,
+                f"Your SimpleLogin subscription will end soon",
+                render(
+                    "transactional/coinbase/reminder-subscription.txt",
+                    coinbase_subscription=coinbase_subscription,
+                    extend_subscription_url=extend_subscription_url,
+                ),
+                render(
+                    "transactional/coinbase/reminder-subscription.html",
+                    coinbase_subscription=coinbase_subscription,
+                    extend_subscription_url=extend_subscription_url,
+                ),
+            )
+
 
 def poll_apple_subscription():
     """Poll Apple API to update AppleSubscription"""

templates/emails/transactional/coinbase/reminder-subscription.html

@@ -0,0 +1,18 @@
+{% extends "base.html" %}
+
+{% block content %}
+  {% call text() %}
+    <h1>
+      Your subscription is ending soon.
+    </h1>
+  {% endcall %}
+
+  {% call text() %}
+    Your subscription ends on
+    <b>{{ coinbase_subscription.end_at.format("YYYY-MM-DD") }}</b>
+  {% endcall %}
+
+  {{ render_button("Extend your subscription", extend_subscription_url) }}
+
+  {{ render_text('Best, <br />SimpleLogin Team.') }}
+{% endblock %}

templates/emails/transactional/coinbase/reminder-subscription.txt

@@ -0,0 +1,7 @@
+Your subscription ends on {{ coinbase_subscription.end_at.format("YYYY-MM-DD") }}
+
+You can extend your subscription on
+{{ extend_subscription_url }}
+
+Best,
+SimpleLogin team.

tests/test_cron.py

@@ -0,0 +1,19 @@
+import arrow
+
+from app.models import User, CoinbaseSubscription
+from cron import notify_manual_sub_end
+
+
+def test_notify_manual_sub_end(flask_client):
+    user = User.create(
+        email="a@b.c",
+        password="password",
+        name="Test User",
+        activated=True,
+    )
+
+    cb = CoinbaseSubscription.create(
+        user_id=user.id, end_at=arrow.now().shift(days=13, hours=2), commit=True
+    )
+
+    notify_manual_sub_end()