When filtering readings on dashboard show selected start/end date and show filter accordion by default

app/routes.py

@@ -47,6 +47,10 @@ def logout():
 def dashboard():
     from datetime import datetime, timedelta
 
+    # Default values
+    start_date = None
+    end_date = None
+
     # Default to all readings
     readings_query = Reading.query.filter_by(user_id=current_user.id)
 
@@ -56,13 +60,17 @@ def dashboard():
         end_date = request.form.get('end_date')
 
         if start_date and end_date:
-            start_date = datetime.strptime(start_date, '%Y-%m-%d')
-            end_date = datetime.strptime(end_date, '%Y-%m-%d')
+            start_date_obj = datetime.strptime(start_date, '%Y-%m-%d')
+            end_date_obj = datetime.strptime(end_date, '%Y-%m-%d')
             readings_query = readings_query.filter(
-                Reading.timestamp >= start_date,
-                Reading.timestamp <= end_date
+                Reading.timestamp >= start_date_obj,
+                Reading.timestamp <= end_date_obj
             )
 
+            # Format start_date and end_date for the template
+            start_date = start_date_obj.strftime('%Y-%m-%d')
+            end_date = end_date_obj.strftime('%Y-%m-%d')
+
     # Fetch and order readings
     readings = readings_query.order_by(Reading.timestamp.desc()).all()
 
@@ -103,7 +111,9 @@ def dashboard():
         timestamps=timestamps,
         systolic=systolic,
         diastolic=diastolic,
-        heart_rate=heart_rate
+        heart_rate=heart_rate,
+        start_date=start_date,
+        end_date=end_date
     )
 
 @main.route('/add-reading', methods=['GET', 'POST'])