Handle all exceptions in requests and add null check

Author: mkotb

jtelegrambotapi-core/src/main/java/com/jtelegram/api/requests/framework/QueryTelegramRequest.java

@@ -34,6 +34,8 @@ public void handleResponse(Response response) throws IOException {
                     callback.accept(gson.fromJson(result.toString(), callbackType));
                 } catch (TelegramException ex) {
                     handleError(ex);
+                } catch (Exception ex) {
+                    ex.printStackTrace();
                 }
             }
         }

jtelegrambotapi-core/src/main/java/com/jtelegram/api/requests/framework/UpdateTelegramRequest.java

@@ -27,7 +27,13 @@ public void handleResponse(Response response) throws IOException {
 
         if (body != null && validate(body) != null) {
             if (callback != null) {
-                callback.run();
+                try {
+                    callback.run();
+                } catch (TelegramException ex) {
+                    handleError(ex);
+                } catch (Exception ex) {
+                    ex.printStackTrace();
+                }
             }
         }
     }

jtelegrambotapi-core/src/main/java/com/jtelegram/api/update/Update.java

@@ -29,6 +29,10 @@ public static abstract class TimeSensitiveUpdate extends Update {
         public abstract long getEventTime();
 
         protected long getDateFromMessage(Message message) {
+            if (message == null) {
+                return -1;
+            }
+
             return message.getForwardSignature() != null ? message.getForwardDate() : message.getDate();
         }
     }