day 11

2022-02-06 22:15:10 -05:00
parent 46625dd6cd
commit a07577bffa
145 changed files with 12008 additions and 0 deletions
@@ -0,0 +1,32 @@
+const fs = require('fs');
+const path = require('path');
+
+class TimezoneService {
+  constructor() {
+    this.cacheStore = {};
+  }
+
+  getAvailableTimezones() {
+    let availableTimezones;
+    if (this.cacheStore.timezones) {
+      availableTimezones = this.cacheStore.timezones;
+    } else {
+      const availableTimezonesContent = fs.readFileSync(path.join(__dirname, '..', 'public', 'timezone.json'), 'utf-8');
+      availableTimezones = JSON.parse(availableTimezonesContent);
+      this.cacheStore.timezones = availableTimezones;
+    }
+    return availableTimezones;
+  }
+
+  findTimezone(target) {
+    const availableTimezones = this.getAvailableTimezones();
+    return availableTimezones?.find((timezone) => timezone?.Abbreviation == target);
+  }
+
+  validateTimeZone(target) {
+    const findTimezone = this.findTimezone(target);
+    return !!findTimezone;
+  }
+}
+
+module.exports = TimezoneService;