feat: timezone support

Author: ilteoood

CalendarManager/CalendarManager.m

@@ -37,6 +37,9 @@ - (EKEvent *)createEvent:(NSDictionary *)eventDetails {
     event.title = [RCTConvert NSString:eventDetails[@"name"]];
     event.location = [RCTConvert NSString:eventDetails[@"location"]];
 
+    NSString *timeZone = [RCTConvert NSString:eventDetails[@"timeZone"]];
+    event.timeZone = timeZone ? [NSTimeZone timeZoneWithName:timeZone] : [NSTimeZone localTimeZone];
+
     return event;
 }
 

android/src/main/java/com/nearform/calendar/CalendarManagerModule.java

@@ -3,6 +3,7 @@
 import android.content.ActivityNotFoundException;
 import android.content.Intent;
 import android.provider.CalendarContract;
+import android.icu.util.TimeZone;
 
 import com.facebook.react.bridge.Promise;
 import com.facebook.react.bridge.ReactApplicationContext;
@@ -22,14 +23,22 @@ public String getName() {
         return "CalendarManager";
     }
 
+    private TimeZone getTimeZone(ReadableMap eventDetails) {
+        return eventDetails.hasKey("timeZone") ? TimeZone.getTimeZone(eventDetails.getString("timeZone")) : TimeZone.getDefault();
+    }
+
     @ReactMethod
     public void addEvent(ReadableMap eventDetails, Promise promise) {
+        final Double startTime = eventDetails.getDouble("startTime");
+        final Double endTime = eventDetails.getDouble("endTime");
+
         final Intent intent = new Intent(Intent.ACTION_INSERT)
                 .setData(CalendarContract.Events.CONTENT_URI)
-                .putExtra(CalendarContract.EXTRA_EVENT_BEGIN_TIME, eventDetails.getDouble("startTime").longValue())
-                .putExtra(CalendarContract.EXTRA_EVENT_END_TIME, eventDetails.getDouble("endTime").longValue())
+                .putExtra(CalendarContract.EXTRA_EVENT_BEGIN_TIME, startTime.longValue())
+                .putExtra(CalendarContract.EXTRA_EVENT_END_TIME, endTime.longValue())
                 .putExtra(CalendarContract.Events.TITLE, eventDetails.getString("name"))
-                .putExtra(CalendarContract.Events.EVENT_LOCATION, eventDetails.getString("location"));
+                .putExtra(CalendarContract.Events.EVENT_LOCATION, eventDetails.getString("location"))
+                .putExtra(CalendarContract.Events.EVENT_TIMEZONE, this.getTimeZone(eventDetails).getID());
 
         try {
             getCurrentActivity().startActivity(intent);

index.d.ts

@@ -3,6 +3,7 @@ type Event = {
     location: string;
     startTime: number;
     endTime: number;
+    timeZone?: string;
 }
 
 interface ReactNativeCalendarManager {