feat: add calendar view

app/apps/calendar_view/utils/calendar.py

@@ -0,0 +1,65 @@
+from datetime import datetime, date
+import calendar
+
+from apps.transactions.models import Transaction
+
+
+# def get_transactions_by_day(year, month):
+#     # Get all transactions for the month
+#     transactions = Transaction.objects.filter(
+#         date__year=year, date__month=month
+#     ).order_by("date")
+#
+#     # Create a dictionary with all days of the month
+#     all_days = {
+#         day: {"day": day, "date": date(year, month, day), "transactions": []}
+#         for day in range(1, calendar.monthrange(year, month)[1] + 1)
+#     }
+#
+#     # Group transactions by day
+#     for transaction in transactions:
+#         day = transaction.date.day
+#         all_days[day]["transactions"].append(transaction)
+#
+#     # Convert to list and sort by day
+#     result = list(all_days.values())
+#
+#     return result
+
+
+def get_transactions_by_day(year, month):
+    # Configure calendar to start on Monday
+    calendar.setfirstweekday(calendar.MONDAY)
+
+    # Get the first and last day of the month
+    first_day = date(year, month, 1)
+
+    # Get all transactions for the month
+    transactions = Transaction.objects.filter(
+        date__year=year, date__month=month
+    ).order_by("date")
+
+    # Calculate padding days needed
+    padding_days = first_day.weekday()  # Monday is 0, Sunday is 6
+
+    # Create padding days as empty dicts
+    padding_dates = [{}] * padding_days
+
+    # Create current month days
+    current_month_dates = [
+        {"day": day, "date": date(year, month, day), "transactions": []}
+        for day in range(1, calendar.monthrange(year, month)[1] + 1)
+    ]
+
+    # Group transactions by day
+    for transaction in transactions:
+        day = transaction.date.day
+        for day_data in current_month_dates:
+            if day_data["day"] == day:
+                day_data["transactions"].append(transaction)
+                break
+
+    # Combine padding and current month dates
+    result = padding_dates + current_month_dates
+
+    return result