implement updating remote caldav calendar name

app/src/main/kotlin/com/simplemobiletools/calendar/helpers/CalDAVHandler.kt

@@ -12,6 +12,7 @@ import com.simplemobiletools.calendar.extensions.hasCalendarPermission
 import com.simplemobiletools.calendar.extensions.scheduleCalDAVSync
 import com.simplemobiletools.calendar.models.CalDAVCalendar
 import com.simplemobiletools.calendar.models.Event
+import com.simplemobiletools.calendar.models.EventType
 import com.simplemobiletools.commons.extensions.getIntValue
 import com.simplemobiletools.commons.extensions.getLongValue
 import com.simplemobiletools.commons.extensions.getStringValue
@@ -64,6 +65,19 @@ class CalDAVHandler(val context: Context) {
         return calendars
     }
 
+    fun updateCalDAVCalendar(eventType: EventType): Boolean {
+        val uri = CalendarContract.Calendars.CONTENT_URI
+        val values = fillCalendarContentValues(eventType)
+        val newUri = ContentUris.withAppendedId(uri, eventType.caldavCalendarId.toLong())
+        return context.contentResolver.update(newUri, values, null, null) == 1
+    }
+
+    private fun fillCalendarContentValues(eventType: EventType): ContentValues {
+        return ContentValues().apply {
+            put(CalendarContract.Calendars.CALENDAR_DISPLAY_NAME, eventType.title)
+        }
+    }
+
     private fun fetchCalDAVCalendarEvents(calendarId: Int, eventTypeId: Int) {
         val importIdsMap = HashMap<String, Event>()
         val fetchedEventIds = ArrayList<String>()

app/src/main/kotlin/com/simplemobiletools/calendar/helpers/DBHelper.kt

@@ -271,6 +271,18 @@ class DBHelper private constructor(val context: Context) : SQLiteOpenHelper(cont
     }
 
     fun updateEventType(eventType: EventType): Int {
+        return if (eventType.caldavCalendarId != 0) {
+            if (CalDAVHandler(context).updateCalDAVCalendar(eventType)) {
+                updateLocalEventType(eventType)
+            } else {
+                -1
+            }
+        } else {
+            updateLocalEventType(eventType)
+        }
+    }
+
+    private fun updateLocalEventType(eventType: EventType): Int {
         val selectionArgs = arrayOf(eventType.id.toString())
         val values = fillEventTypeValues(eventType)
         val selection = "$COL_TYPE_ID = ?"