Make botinfo support both slash and message commands

src/main/java/wtf/beatrice/hidekobot/commands/message/BotInfoCommand.java

@@ -0,0 +1,51 @@
+package wtf.beatrice.hidekobot.commands.message;
+
+import net.dv8tion.jda.api.Permission;
+import net.dv8tion.jda.api.entities.MessageEmbed;
+import net.dv8tion.jda.api.events.message.MessageReceivedEvent;
+import org.jetbrains.annotations.Nullable;
+import wtf.beatrice.hidekobot.Cache;
+import wtf.beatrice.hidekobot.commands.base.BotInfo;
+import wtf.beatrice.hidekobot.objects.commands.MessageCommand;
+
+import java.util.Collections;
+import java.util.LinkedList;
+import java.util.List;
+
+public class BotInfoCommand implements MessageCommand
+{
+
+    @Override
+    public LinkedList<String> getCommandLabels() {
+        return new LinkedList<>(Collections.singletonList("botinfo"));
+    }
+
+    @Nullable
+    @Override
+    public List<Permission> getPermissions() {
+        return null; // anyone can use it
+    }
+
+    @Override
+    public boolean passRawArgs() {
+        return false;
+    }
+
+    @Override
+    public void runCommand(MessageReceivedEvent event, String label, String[] args) {
+
+        // run in a thread because we might use thread-locking things
+        new Thread(() -> {
+            // get a list of message commands
+            LinkedList<MessageCommand> messageCommands = Cache.getMessageCommandListener().getRegisteredCommands();
+            LinkedList<String> commandNames = new LinkedList<>();
+            for (MessageCommand command : messageCommands) {
+                commandNames.add(command.getCommandLabels().get(0));
+            }
+
+            // send the list
+            MessageEmbed embed = BotInfo.generateEmbed(commandNames);
+            event.getMessage().replyEmbeds(embed).queue();
+        }).start();
+    }
+}