Added a query and endpoint to return the count of complaints for a date-range.

Unit tests for complaints_rest.get_complaint_count have yet to be written.
Maybe there is a better name for the new endpoint.

app/complaint/complaint_rest.py

@@ -21,11 +21,12 @@ def get_all_complaints():
     return jsonify([x.serialize() for x in complaints]), 200
 
 
-@complaint_blueprint.route('/total-per-day', methods=['GET'])
+@complaint_blueprint.route('/count-by-date-range', methods=['GET'])
 def get_complaint_count():
     request_json = request.args.to_dict
     start_date = None
     end_date = None
+    # TODO: unit tests have yet to be written, need to test setting start and end date
     if request_json:
         validate(request_json, complaint_count_request)
         start_date = request_json.get('start_date', None)

app/dao/complaint_dao.py

@@ -1,6 +1,11 @@
+from datetime import timedelta
+
+from sqlalchemy import desc
+
 from app import db
 from app.dao.dao_utils import transactional
 from app.models import Complaint
+from app.utils import get_london_midnight_in_utc
 
 
 @transactional
@@ -9,8 +14,11 @@ def save_complaint(complaint):
 
 
 def fetch_complaints_by_service(service_id):
-    return Complaint.query.filter_by(service_id=service_id).all()
+    return Complaint.query.filter_by(service_id=service_id).order_by(desc(Complaint.created_at)).all()
 
 
 def fetch_count_of_complaints(start_date, end_date):
-    return Complaint.count.filter(Complaint.created_at >= start_date, Complaint.created_at < end_date)
+    start_date = get_london_midnight_in_utc(start_date)
+    end_date = get_london_midnight_in_utc(end_date + timedelta(days=1))
+
+    return Complaint.query.filter(Complaint.created_at >= start_date, Complaint.created_at < end_date).count()