add telegram->mc response for group chats

The telegram bot needs to be put into privacy disabled mode (see #3)
Closes #3

src/main/java/de/Linus122/Telegram/Telegram.java

@@ -81,7 +81,9 @@ public class Telegram {
 
 					if (update.getMessage() != null) {
 						Chat chat = update.getMessage().getChat();
+		
 						if (chat.isPrivate()) {
+							// private chat
 							if (!TelegramChat.getBackend().ids.contains(chat.getId()))
 								TelegramChat.getBackend().ids.add(chat.getId());
 
@@ -99,7 +101,32 @@ public class Telegram {
 										this.sendMsg(chat2);
 									}
 									this.sendMsg(chat.getId(), Utils.formatMSG("can-see-but-not-chat")[0]);
-								} else if (TelegramChat.getBackend().getLinkCodes().containsKey(text)) {
+								} else {
+									handleUserMessage(text, chat);
+								}
+							}
+
+						} else if (!chat.isPrivate()) {
+							// group chat
+							int id = chat.getId();
+							if (!TelegramChat.getBackend().ids.contains(id))
+								TelegramChat.getBackend().ids.add(id);
+							
+							if (update.getMessage().getText() != null) {
+								String text = update.getMessage().getText();
+								handleUserMessage(text, chat);
+							}
+						}
+					}
+
+				}
+			}
+		}
+		return true;
+	}
+	
+	public void handleUserMessage(String text, Chat chat) {
+		if (TelegramChat.getBackend().getLinkCodes().containsKey(text)) {
 			// LINK
 			TelegramChat.link(TelegramChat.getBackend().getUUIDFromLinkCode(text), chat.getId());
 			TelegramChat.getBackend().removeLinkCode(text);
@@ -119,19 +146,6 @@ public class Telegram {
 		}
 	}
 
-						} else if (!chat.isPrivate()) {
-							int id = chat.getId();
-							if (!TelegramChat.getBackend().ids.contains(id))
-								TelegramChat.getBackend().ids.add(id);
-						}
-					}
-
-				}
-			}
-		}
-		return true;
-	}
-
 	public void sendMsg(int id, String msg) {
 		ChatMessageToTelegram chat = new ChatMessageToTelegram();
 		chat.chat_id = id;