refactor(views/calendar): use specific API for date notes for performance

src/public/app/services/utils.ts

@@ -30,6 +30,27 @@ function parseDate(str: string) {
     }
 }
 
+// Source: https://stackoverflow.com/a/30465299/4898894
+function getMonthsInDateRange(startDate: string, endDate: string) {
+    const start = startDate.split('-');
+    const end = endDate.split('-');
+    const startYear = parseInt(start[0]);
+    const endYear = parseInt(end[0]);
+    const dates = [];
+
+    for (let i = startYear; i <= endYear; i++) {
+        const endMonth = i != endYear ? 11 : parseInt(end[1]) - 1;
+        const startMon = i === startYear ? parseInt(start[1])-1 : 0;
+
+        for(let j = startMon; j <= endMonth; j = j > 12 ? j % 12 || 11 : j+1) {
+            const month = j+1;
+            const displayMonth = month < 10 ? '0'+month : month;
+            dates.push([i, displayMonth].join('-'));
+        }
+    }
+    return dates;
+}
+
 function padNum(num: number) {
     return `${num <= 9 ? "0" : ""}${num}`;
 }
@@ -621,6 +642,7 @@ export default {
     reloadFrontendApp,
     reloadTray,
     parseDate,
+    getMonthsInDateRange,
     formatDateISO,
     formatDateTime,
     formatTimeInterval,