Modify TelegramLongPollingBot to support commands

src/main/java/org/telegram/telegrambots/bots/TelegramLongPollingBot.java

@@ -1,11 +1,77 @@
 package org.telegram.telegrambots.bots;
 
+import org.telegram.telegrambots.BotLogger;
+import org.telegram.telegrambots.TelegramApiException;
+import org.telegram.telegrambots.api.commands.Command;
+import org.telegram.telegrambots.api.commands.CommandRegistry;
+import org.telegram.telegrambots.api.commands.ICommandRegistery;
+import org.telegram.telegrambots.api.methods.send.SendMessage;
+import org.telegram.telegrambots.api.objects.Message;
+import org.telegram.telegrambots.api.objects.Update;
+
+import java.util.Collection;
+import java.util.Map;
+
 /**
  * @author Ruben Bermudez
  * @version 1.0
  * @brief TODO
  * @date 14 of January of 2016
  */
-public abstract class TelegramLongPollingBot extends AbsSender implements ITelegramLongPollingBot {
+public abstract class TelegramLongPollingBot extends AbsSender implements ITelegramLongPollingBot, ICommandRegistery {
 
-}
+    public static final String LOGTAG = "TelegramLongPollingBot";
+    private final CommandRegistry commandRegistry;
+
+    public TelegramLongPollingBot() {
+        this.commandRegistry = new CommandRegistry(getBotToken());
+    }
+
+    @Override
+    public final void onUpdateReceived(Update update) {
+        if (update.hasMessage()) {
+            Message message = update.getMessage();
+            if (message.isCommand()) {
+                if (!commandRegistry.executeCommand(message)) {
+                    SendMessage sendMessage = new SendMessage();
+                    sendMessage.setChatId(message.getChatId());
+                    sendMessage.setText("The command you provided is not registered for this bot");
+                    try {
+                        sendMessage(sendMessage);
+                    } catch (TelegramApiException e) {
+                        BotLogger.error("Cannot send message", LOGTAG, e);
+                    }
+                }
+                return;
+            }
+        }
+        processNonCommandUpdate(update);
+    }
+
+    @Override
+    public final boolean register(Command command) {
+        return commandRegistry.register(command);
+    }
+
+    @Override
+    public final Map<Command, Boolean> registerAll(Command... commands) {
+        return commandRegistry.registerAll(commands);
+    }
+
+    @Override
+    public final boolean deregister(Command command) {
+        return commandRegistry.deregister(command);
+    }
+
+    @Override
+    public final Map<Command, Boolean> deregisterAll(Command... commands) {
+        return commandRegistry.deregisterAll(commands);
+    }
+
+    @Override
+    public final Collection<Command> getRegisteredCommands() {
+        return commandRegistry.getRegisteredCommands();
+    }
+
+    public abstract void processNonCommandUpdate(Update update);
+}