display when subscription ends in admin

app/admin_model.py

@@ -50,6 +50,7 @@ class UserAdmin(SLModelView):
     def scaffold_list_columns(self):
         ret = super().scaffold_list_columns()
         ret.insert(0, "upgrade_channel")
+        ret.insert(0, "premium_end")
         return ret
 
     @action(

app/models.py

@@ -478,6 +478,31 @@ class User(db.Model, ModelMixin, UserMixin):
 
         return "N/A"
 
+    @property
+    def premium_end(self) -> str:
+        if self.lifetime:
+            return "Forever"
+
+        sub: Subscription = self.get_subscription()
+        if sub:
+            return str(sub.next_bill_date)
+
+        apple_sub: AppleSubscription = AppleSubscription.get_by(user_id=self.id)
+        if apple_sub and apple_sub.is_valid():
+            return apple_sub.expires_date.humanize()
+
+        manual_sub: ManualSubscription = ManualSubscription.get_by(user_id=self.id)
+        if manual_sub and manual_sub.is_active():
+            return manual_sub.end_at.humanize()
+
+        coinbase_subscription: CoinbaseSubscription = CoinbaseSubscription.get_by(
+            user_id=self.id
+        )
+        if coinbase_subscription and coinbase_subscription.is_active():
+            return coinbase_subscription.end_at.humanize()
+
+        return "N/A"
+
     def can_create_new_alias(self) -> bool:
         if self.is_premium():
             return True

server.py

@@ -388,7 +388,10 @@ def fake_data():
     db.session.commit()
 
     ManualSubscription.create(
-        user_id=user2.id, end_at=arrow.now().shift(years=1, days=1), commit=True
+        user_id=user2.id,
+        end_at=arrow.now().shift(years=1, days=1),
+        comment="Local manual",
+        commit=True,
     )