Fix Detekt issues in ChatUtils

- ComplexMethod - 11/10 - [getParsedMessage]
- NestedBlockDepth - 4/4 - [getParsedMessage]

Signed-off-by: Tim Krüger <t@timkrueger.me>

app/src/main/java/com/nextcloud/talk/models/json/chat/ChatUtils.kt

@@ -5,6 +5,8 @@
  * Copyright (C) 2017-2018 Mario Danic <mario@lovelyhq.com>
  * @author Marcel Hibbe
  * Copyright (C) 2021 Marcel Hibbe <dev@mhibbe.de>
+ * @author Tim Krüger
+ * Copyright (C) 2022 Tim Krüger <t@timkrueger.me>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -26,8 +28,17 @@ class ChatUtils {
     companion object {
         fun getParsedMessage(message: String?, messageParameters: HashMap<String?, HashMap<String?, String?>>?):
             String? {
-            var resultMessage = message
             if (messageParameters != null && messageParameters.size > 0) {
+                return parse(messageParameters, message)
+            }
+            return message
+        }
+
+        private fun parse(
+            messageParameters: HashMap<String?, HashMap<String?, String?>>,
+            message: String?
+        ): String? {
+            var resultMessage = message
             for (key in messageParameters.keys) {
                 val individualHashMap = messageParameters[key]
                 val type = individualHashMap?.get("type")
@@ -45,7 +56,6 @@ class ChatUtils {
                     resultMessage = individualHashMap?.get("name")?.let { resultMessage?.replace("{$key}", it) }
                 }
             }
-            }
             return resultMessage
         }
     }