Add dao method to get count of slow delivery notifications by provider

app/dao/notifications_dao.py

@@ -11,13 +11,16 @@ from sqlalchemy.orm import joinedload
 
 from app import db, create_uuid
 from app.dao import days_ago
+from app.dao.provider_details_dao import get_provider_details_by_identifier
 from app.models import (
     Service,
     Notification,
     NotificationHistory,
     NotificationStatistics,
+    ProviderDetails,
     Template,
     NOTIFICATION_CREATED,
+    NOTIFICATION_DELIVERED,
     NOTIFICATION_SENDING,
     NOTIFICATION_PENDING,
     NOTIFICATION_TECHNICAL_FAILURE,
@@ -421,3 +424,32 @@ def get_total_sent_notifications_in_date_range(start_date, end_date, notificatio
     ).scalar()
 
     return result or 0
+
+
+def get_count_of_slow_delivery_sms_notifications_for_provider(
+    created_at,
+    sent_at,
+    provider,
+    threshold,
+    delivery_time,
+    service_id,
+    template_id
+):
+    count = db.session.query(
+        func.count().label('total'),
+        Notification.sent_by
+    ).filter(
+        Notification.service_id == service_id,
+        Notification.template_id == template_id,
+        Notification.created_at >= created_at,
+        Notification.sent_at >= sent_at,
+        Notification.status == NOTIFICATION_DELIVERED,
+        Notification.sent_by == provider,
+        (Notification.updated_at - Notification.sent_at) >= delivery_time,
+    ).group_by(
+        Notification.sent_by
+    ).having(
+        func.count().label('total') >= threshold,
+    ).first()
+
+    return count