feat: handle unsubscribe

src/usecase/__init__.py

@@ -26,6 +26,7 @@ from .placement.get_placement import get_placement
 from .placement.get_placements import get_placements
 from .placement.update_placement import update_placement
 from .subscription.handle_subscription import handle_subscription
+from .subscription.handle_unsubscription import handle_unsubscription
 from .target_channel.connect_target_chan import connect_target_chan
 from .target_channel.disconnect_target_chan import disconnect_target_chan
 from .target_channel.disconnect_target_chan_by_tg_id import disconnect_target_chan_by_tg_id
@@ -131,6 +132,16 @@ class Database(typing.Protocol):
         self, subscriber_id: UUID, placement_id: UUID
     ) -> domain.Subscription | None: ...
 
+    async def update_subscription(self, subscription: domain.Subscription) -> domain.Subscription: ...
+
+    async def get_active_subscriptions_by_subscriber_and_channel(
+        self, subscriber_id: UUID, channel_telegram_id: int
+    ) -> list[domain.Subscription]: ...
+
+    async def get_active_subscription_by_subscriber_and_channel(
+        self, subscriber_id: UUID, channel_telegram_id: int
+    ) -> domain.Subscription | None: ...
+
     async def create_placement_views_history(
         self, history: domain.PlacementViewsHistory
     ) -> domain.PlacementViewsHistory: ...
@@ -195,6 +206,7 @@ class Usecase:
     update_placement = update_placement
     delete_placement = delete_placement
     handle_subscription = handle_subscription
+    handle_unsubscription = handle_unsubscription
     fetch_views = fetch_views_manually
     run_views_worker_cycle = run_views_worker_cycle
     get_views_history = get_views_history