Improve month calendar

app/routes.py

@@ -156,6 +156,35 @@ def dashboard():
             badges.append("Night Owl: Logged Readings Every Night for a Week")
 
         return badges
+    
+    def generate_monthly_calendar(readings, selected_date, local_timezone):
+        # Convert selected date to user's timezone and extract the start/end dates
+        today = datetime.now(local_timezone).date()
+        date = selected_date.astimezone(local_timezone).date()
+        first_day_of_month = date.replace(day=1)
+        days_to_subtract = (first_day_of_month.weekday() + 1) % 7
+        start_date = first_day_of_month - timedelta(days=days_to_subtract)
+        end_date = start_date + timedelta(days=6 * 7 - 1)
+
+        # Group readings by day
+        readings_by_day = {}
+        for reading in readings:
+            local_date = reading.timestamp.astimezone(local_timezone).date()
+            readings_by_day.setdefault(local_date, []).append(reading)
+
+        # Build calendar days
+        calendar = []
+        current_date = start_date
+        while current_date <= end_date:
+            calendar.append({
+                'day': current_date.day,
+                'is_today': current_date == today,
+                'is_in_current_month': current_date.month == date.month,
+                'readings': readings_by_day.get(current_date, []),
+            })
+            current_date += timedelta(days=1)
+
+        return calendar
 
     # Get the first and last reading timestamps
     first_reading_timestamp, last_reading_timestamp = get_reading_date_range(current_user.id)
@@ -188,6 +217,8 @@ def dashboard():
         reading.relative_timestamp = humanize.naturaltime(now - reading.timestamp)
         reading.local_timestamp = utc.localize(reading.timestamp).astimezone(local_tz)
 
+    month_view = generate_monthly_calendar(readings, now, local_tz)
+
     # Calculate weekly summary and progress badges
     systolic_avg, diastolic_avg, heart_rate_avg = calculate_weekly_summary(readings)
     badges = calculate_progress_badges(readings)
@@ -223,6 +254,7 @@ def dashboard():
         start_date=start_date,
         end_date=end_date,
         readings_by_date=readings_by_date,
+        month = month_view,
         date=date,
         timedelta=timedelta
     )