Fix missing permissions on newer Android versions

app/src/main/kotlin/com/github/gotify/init/InitializationActivity.kt

@@ -1,5 +1,6 @@
 package com.github.gotify.init
 
+import android.Manifest
 import android.app.NotificationManager
 import android.content.Intent
 import android.os.Build
@@ -22,6 +23,7 @@ import com.github.gotify.login.LoginActivity
 import com.github.gotify.messages.MessagesActivity
 import com.github.gotify.service.WebSocketService
 import com.github.gotify.settings.ThemeHelper
+import com.livinglifetechway.quickpermissions_kotlin.runWithPermissions
 
 internal class InitializationActivity : AppCompatActivity() {
 
@@ -46,7 +48,9 @@ internal class InitializationActivity : AppCompatActivity() {
         Log.i("Entering ${javaClass.simpleName}")
 
         if (settings.tokenExists()) {
-            tryAuthenticate()
+            runWithNeededPermissions {
+                tryAuthenticate()
+            }
         } else {
             showLogin()
         }
@@ -130,4 +134,23 @@ internal class InitializationActivity : AppCompatActivity() {
             .version
             .enqueue(Callback.callInUI(this, callback, errorCallback))
     }
+
+    private fun runWithNeededPermissions(action: () -> Unit) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+                // Android 13 and above
+                runWithPermissions(
+                    Manifest.permission.SCHEDULE_EXACT_ALARM,
+                    Manifest.permission.POST_NOTIFICATIONS,
+                    callback = action
+                )
+            } else {
+                // Android 12 and Android 12L
+                runWithPermissions(Manifest.permission.SCHEDULE_EXACT_ALARM, callback = action)
+            }
+        } else {
+            // Android 11 and below
+            action()
+        }
+    }
 }