Add donation notifications viewset

src/app/views/donate_notifications.py

@@ -0,0 +1,41 @@
+from datetime import datetime
+
+from fastapi import APIRouter, Depends
+
+from app.depends import check_token
+from app.models import ChatDonateNotification
+
+
+NOTIFICATION_DELTA_DAYS = 30
+
+
+donation_notifications_router = APIRouter(
+    prefix="/donate_notifications",
+    tags=["donate_notifications"],
+    dependencies=[Depends(check_token)],
+)
+
+
+@donation_notifications_router.get("/{chat_id}/is_need_send")
+async def is_need_send(chat_id: int) -> bool:
+    # add redis cache
+    notification = await ChatDonateNotification.objects.get_or_none(chat_id=chat_id)
+
+    if notification is None:
+        return True
+
+    delta = datetime.now() - notification.sended
+    return delta.days >= NOTIFICATION_DELTA_DAYS
+
+
+@donation_notifications_router.post("/{chat_id}")
+async def mark_sended(chat_id: int):
+    notification, created = await ChatDonateNotification.objects.get_or_create(
+        _default={"sended": datetime.now()}, chat_id=chat_id
+    )
+
+    if created:
+        return
+
+    notification.sended = datetime.now()
+    await notification.save()