Added GetYearPeriodActive() to get active year period.

library/src/utilities.cpp

@@ -215,6 +215,43 @@ bool Utilities::IsYearPeriodActive(Configuration const *cfg, QDateTime const &dt
     return true;
 }
 
+std::optional<ATBPeriodYear>
+Utilities::GetYearPeriodActive(Configuration const *cfg, QDateTime const &currentDateTime) {
+
+    ATBPeriodYear period;
+    std::optional<ATBPeriodYear> value;
+
+    for (multimap<int, ATBPeriodYear>::const_iterator it = cfg->YearPeriod.cbegin();
+         it != cfg->YearPeriod.cend();
+         ++it) {
+        QDate const s(currentDateTime.date().year(), it->second.pye_start_month, it->second.pye_start_day);
+        QDate const e(currentDateTime.date().year(), it->second.pye_end_month, it->second.pye_end_day);
+
+        QDateTime start(currentDateTime);
+        QDateTime end(currentDateTime);
+
+        start.setDate(s);
+        end.setDate(e);
+
+        if (start.date().dayOfYear() < end.date().dayOfYear()) {
+            // start and end in the same year
+            if (currentDateTime.date().dayOfYear() >= start.date().dayOfYear() &&
+                currentDateTime.date().dayOfYear() <= end.date().dayOfYear()) {
+                value = value.value_or(it->second);
+                break;
+            }
+        } else {
+            if (currentDateTime.date().dayOfYear() >= start.date().dayOfYear() ||
+                currentDateTime.date().dayOfYear() <= end.date().dayOfYear()) {
+                value = value.value_or(it->second);
+                break;
+            }
+        }
+    }
+
+    return value;
+}
+
 /// <inheritdoc/>
 bool Utilities::CheckSpecialDay(Configuration* cfg, const char* currentDateTimeStr, int* specialDayId, double* specialDayPrice)
 {