code refactor

src/lib/statistics.js

@@ -1,5 +1,11 @@
 import statisticsConstants from '@/consts/statistics.js';
 
+import {
+    getAllMonthsStartAndEndUnixTimes,
+    getAllQuartersStartAndEndUnixTimes,
+    getAllYearsStartAndEndUnixTimes
+} from '@/lib/datetime.js';
+
 export function isChartDataTypeAvailableForAnalysisType(chartDataType, analysisType) {
     for (const dataTypeField in statisticsConstants.allChartDataTypes) {
         if (!Object.prototype.hasOwnProperty.call(statisticsConstants.allChartDataTypes, dataTypeField)) {
@@ -52,3 +58,41 @@ export function sortStatisticsItems(items, sortingType) {
         });
     }
 }
+
+export function getAllDateRanges(items, startYearMonth, endYearMonth, dateAggregationType) {
+    if ((!startYearMonth || !endYearMonth) && items && items.length) {
+        let minYear = Number.MAX_SAFE_INTEGER, minMonth = Number.MAX_SAFE_INTEGER, maxYear = 0, maxMonth = 0;
+
+        for (let i = 0; i < items.length; i++) {
+            const item = items[i];
+
+            for (let j = 0; j < item.items.length; j++) {
+                const dataItem = item.items[j];
+
+                if (dataItem.year < minYear || (dataItem.year === minYear && dataItem.month < minMonth)) {
+                    minYear = dataItem.year;
+                    minMonth = dataItem.month;
+                }
+
+                if (dataItem.year > maxYear || (dataItem.year === maxYear && dataItem.month > maxMonth)) {
+                    maxYear = dataItem.year;
+                    maxMonth = dataItem.month;
+                }
+            }
+        }
+
+        startYearMonth = `${minYear}-${minMonth}`;
+        endYearMonth = `${maxYear}-${maxMonth}`;
+    }
+
+    if (!startYearMonth || !endYearMonth) {
+        return [];
+    }
+    if (dateAggregationType === statisticsConstants.allDateAggregationTypes.Year.type) {
+        return getAllYearsStartAndEndUnixTimes(startYearMonth, endYearMonth);
+    } else if (dateAggregationType === statisticsConstants.allDateAggregationTypes.Quarter.type) {
+        return getAllQuartersStartAndEndUnixTimes(startYearMonth, endYearMonth);
+    } else { // if (dateAggregationType === statisticsConstants.allDateAggregationTypes.Month.type) {
+        return getAllMonthsStartAndEndUnixTimes(startYearMonth, endYearMonth);
+    }
+}