Refactor yearly forecast calculations to improve accuracy and clarity

- Updated the `resolve_yearly_forecast` function to correctly handle actual revenue tracking for the current month, ensuring accurate goal calculations.
- Introduced a new variable `month_actual` to store realized revenue, enhancing the clarity of the calculations.
- Adjusted the logic for discount calculations to reflect the actual revenue, improving the reliability of the forecasting process.

These changes enhance the accuracy and reliability of yearly forecasting and revenue tracking.

backend/api/src/analytics/yearly_forecast.py

@@ -37,10 +37,17 @@ def resolve_yearly_forecast(_, info, year=None):
             forecast_doi = compute_forecast(date_of_interest)
 
         goal = main_goal / (13 - month)
+        month_actual = 0
         if y < current_year or (y == current_year and m < current_month):
             goal = 0
-            discount = forecast 
-            #actual += revenue_tracking["total"] if (y != current_year or m != current_month) else 0
+
+            month_actual = forecast["summary"]["realized"]
+            discount = month_actual
+            actual += month_actual
+        elif y == current_year and m == current_month:
+            month_actual = forecast["summary"]["realized"]
+            # discount = month_actual
+            actual += month_actual
 
 
         by_month.append({
@@ -51,10 +58,10 @@ def resolve_yearly_forecast(_, info, year=None):
             "expected_squad_fee": forecast_doi["by_kind"]["squad"]['totals'].in_analysis,
             "expected_hands_on_fee": forecast_doi["by_kind"]["hands_on"]['totals'].in_analysis,
             "expected_consulting_pre_fee": forecast_doi["by_kind"]["consulting_pre"]['totals'].in_analysis,
-            "actual": revenue_tracking["total"] if revenue_tracking else 0
+            "actual": month_actual
         })
 
-        #main_goal -= discount
+        main_goal -= discount
 
 
     total_working_days = sum(len(get_working_days_in_month(y, m)) for m in range(1, 13))