Make slash commands interface and load them dynamically

Slash commands are now loaded dynamically by implementing a SlashCommand interface and storing them in a loaded commands map.

src/main/java/wtf/beatrice/hidekobot/HidekoBot.java

@@ -6,6 +6,7 @@ import net.dv8tion.jda.api.OnlineStatus;
 import net.dv8tion.jda.api.entities.Activity;
 import net.dv8tion.jda.api.requests.GatewayIntent;
 import sun.misc.Signal;
+import wtf.beatrice.hidekobot.commands.slash.*;
 import wtf.beatrice.hidekobot.datasource.ConfigurationSource;
 import wtf.beatrice.hidekobot.datasource.DatabaseSource;
 import wtf.beatrice.hidekobot.listeners.ButtonInteractionListener;
@@ -97,9 +98,21 @@ public class HidekoBot
 
         }
 
+        // register commands
+        SlashCommandListener slashCommandListener = new SlashCommandListener();
+        slashCommandListener.registerCommand(new AvatarCommand());
+        slashCommandListener.registerCommand(new BotInfoCommand());
+        slashCommandListener.registerCommand(new ClearCommand());
+        slashCommandListener.registerCommand(new CoinFlipCommand());
+        slashCommandListener.registerCommand(new DieCommand());
+        slashCommandListener.registerCommand(new HelpCommand());
+        slashCommandListener.registerCommand(new InviteCommand());
+        slashCommandListener.registerCommand(new PingCommand());
+        slashCommandListener.registerCommand(new SayCommand());
+
         // register listeners
         jda.addEventListener(new MessageListener());
-        jda.addEventListener(new SlashCommandListener());
+        jda.addEventListener(slashCommandListener);
         jda.addEventListener(new SlashCommandCompleter());
         jda.addEventListener(new ButtonInteractionListener());
 

src/main/java/wtf/beatrice/hidekobot/commands/slash/AvatarCommand.java

@@ -6,10 +6,17 @@ import net.dv8tion.jda.api.events.interaction.command.SlashCommandInteractionEve
 import net.dv8tion.jda.api.interactions.commands.OptionMapping;
 import org.jetbrains.annotations.NotNull;
 import wtf.beatrice.hidekobot.Cache;
+import wtf.beatrice.hidekobot.objects.SlashCommand;
 
-public class AvatarCommand
+public class AvatarCommand implements SlashCommand
 {
 
+    @Override
+    public String getCommandName() {
+        return "avatar";
+    }
+
+    @Override
     public void runSlashCommand(@NotNull SlashCommandInteractionEvent event)
     {
         // defer reply because this might take a moment

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

@@ -6,15 +6,22 @@ import net.dv8tion.jda.api.interactions.commands.Command;
 import org.jetbrains.annotations.NotNull;
 import wtf.beatrice.hidekobot.Cache;
 import wtf.beatrice.hidekobot.HidekoBot;
+import wtf.beatrice.hidekobot.objects.SlashCommand;
 import wtf.beatrice.hidekobot.util.FormatUtil;
 
 import java.lang.management.ManagementFactory;
 import java.text.DecimalFormat;
 import java.util.List;
 
-public class BotInfoCommand
+public class BotInfoCommand implements SlashCommand
 {
 
+    @Override
+    public String getCommandName() {
+        return "botinfo";
+    }
+
+    @Override
     public void runSlashCommand(@NotNull SlashCommandInteractionEvent event)
     {
         // defer reply because this might take a moment

src/main/java/wtf/beatrice/hidekobot/commands/slash/ClearCommand.java

@@ -13,13 +13,21 @@ import net.dv8tion.jda.api.interactions.components.buttons.Button;
 import net.dv8tion.jda.api.requests.restaction.WebhookMessageEditAction;
 import org.jetbrains.annotations.NotNull;
 import wtf.beatrice.hidekobot.Cache;
+import wtf.beatrice.hidekobot.objects.SlashCommand;
 
 import java.util.ArrayList;
 import java.util.List;
 
-public class ClearCommand
+public class ClearCommand implements SlashCommand
 {
 
+    @Override
+    public String getCommandName() {
+        return "clear";
+    }
+
+    @Override
+
     public void runSlashCommand(@NotNull SlashCommandInteractionEvent event)
     {
 

src/main/java/wtf/beatrice/hidekobot/commands/slash/CoinFlipCommand.java

@@ -9,16 +9,23 @@ import net.dv8tion.jda.api.interactions.components.ActionRow;
 import net.dv8tion.jda.api.interactions.components.buttons.Button;
 import org.jetbrains.annotations.NotNull;
 import wtf.beatrice.hidekobot.Cache;
+import wtf.beatrice.hidekobot.objects.SlashCommand;
 import wtf.beatrice.hidekobot.util.RandomUtil;
 
 import java.util.List;
 
-public class CoinFlipCommand
+public class CoinFlipCommand implements SlashCommand
 {
 
+    @Override
+    public String getCommandName() {
+        return "coinflip";
+    }
+
     private final Button reflipButton = Button.primary("coinflip_reflip", "Flip again")
             .withEmoji(Emoji.fromFormatted("\uD83E\uDE99"));
 
+    @Override
     public void runSlashCommand(@NotNull SlashCommandInteractionEvent event)
     {
         // perform coin flip

src/main/java/wtf/beatrice/hidekobot/commands/slash/DieCommand.java

@@ -4,13 +4,20 @@ import net.dv8tion.jda.api.events.interaction.command.SlashCommandInteractionEve
 import org.jetbrains.annotations.NotNull;
 import wtf.beatrice.hidekobot.Cache;
 import wtf.beatrice.hidekobot.HidekoBot;
+import wtf.beatrice.hidekobot.objects.SlashCommand;
 
 import java.util.concurrent.Executors;
 import java.util.concurrent.TimeUnit;
 
-public class DieCommand
+public class DieCommand implements SlashCommand
 {
 
+    @Override
+    public String getCommandName() {
+        return "die";
+    }
+
+    @Override
     public void runSlashCommand(@NotNull SlashCommandInteractionEvent event)
     {
         if(Cache.getBotOwnerId() != event.getUser().getIdLong())

src/main/java/wtf/beatrice/hidekobot/commands/slash/HelpCommand.java

@@ -4,10 +4,17 @@ import net.dv8tion.jda.api.EmbedBuilder;
 import net.dv8tion.jda.api.events.interaction.command.SlashCommandInteractionEvent;
 import org.jetbrains.annotations.NotNull;
 import wtf.beatrice.hidekobot.Cache;
+import wtf.beatrice.hidekobot.objects.SlashCommand;
 
-public class HelpCommand
+public class HelpCommand implements SlashCommand
 {
 
+    @Override
+    public String getCommandName() {
+        return "help";
+    }
+
+    @Override
     public void runSlashCommand(@NotNull SlashCommandInteractionEvent event)
     {
         // defer reply because replying might take a while

src/main/java/wtf/beatrice/hidekobot/commands/slash/InviteCommand.java

@@ -11,9 +11,17 @@ import net.dv8tion.jda.api.requests.restaction.interactions.ReplyCallbackAction;
 import org.jetbrains.annotations.NotNull;
 import wtf.beatrice.hidekobot.Cache;
 import wtf.beatrice.hidekobot.HidekoBot;
+import wtf.beatrice.hidekobot.objects.SlashCommand;
 
-public class InviteCommand
+public class InviteCommand implements SlashCommand
 {
+
+    @Override
+    public String getCommandName() {
+        return "invite";
+    }
+
+    @Override
     public void runSlashCommand(@NotNull SlashCommandInteractionEvent event)
     {
         // defer reply because this might take a moment

src/main/java/wtf/beatrice/hidekobot/commands/slash/PingCommand.java

@@ -2,9 +2,16 @@ package wtf.beatrice.hidekobot.commands.slash;
 
 import net.dv8tion.jda.api.events.interaction.command.SlashCommandInteractionEvent;
 import org.jetbrains.annotations.NotNull;
+import wtf.beatrice.hidekobot.objects.SlashCommand;
 
-public class PingCommand
+public class PingCommand implements SlashCommand
 {
+    @Override
+    public String getCommandName() {
+        return "ping";
+    }
+
+    @Override
     public void runSlashCommand(@NotNull SlashCommandInteractionEvent event)
     {
         event.reply("Pong!").queue();

src/main/java/wtf/beatrice/hidekobot/commands/slash/SayCommand.java

@@ -4,10 +4,18 @@ import net.dv8tion.jda.api.entities.channel.middleman.MessageChannel;
 import net.dv8tion.jda.api.events.interaction.command.SlashCommandInteractionEvent;
 import net.dv8tion.jda.api.interactions.commands.OptionMapping;
 import org.jetbrains.annotations.NotNull;
+import wtf.beatrice.hidekobot.objects.SlashCommand;
 
-public class SayCommand
+public class SayCommand implements SlashCommand
 {
 
+
+    @Override
+    public String getCommandName() {
+        return "say";
+    }
+
+    @Override
     public void runSlashCommand(@NotNull SlashCommandInteractionEvent event)
     {
         MessageChannel channel = event.getChannel();

src/main/java/wtf/beatrice/hidekobot/listeners/MessageListener.java

@@ -10,6 +10,12 @@ import wtf.beatrice.hidekobot.util.Logger;
 public class MessageListener extends ListenerAdapter
 {
 
+    private final String commandRegex = "(?i)^(hideko|hde)\\b";
+    // (?i) -> case insensitive flag
+    // ^ -> start of string (not in middle of a sentence)
+    // \b -> the word has to end here
+    // .* -> there can be anything else after this word
+
     private final Logger logger = new Logger(MessageListener.class);
 
     @Override
@@ -17,24 +23,31 @@ public class MessageListener extends ListenerAdapter
     {
         String eventMessage = event.getMessage().getContentDisplay();
 
+        if(!eventMessage.toLowerCase().matches(commandRegex + ".*"))
+            return;
+
+        MessageChannel channel = event.getChannel();
+        // generate args from the string
+        String argsString = eventMessage.replaceAll(commandRegex + "\\s*", "");
+        String[] args = argsString.split("\\s+");
+
+        event.getMessage().reply("Hi").queue();
+
+
         if(eventMessage.equalsIgnoreCase("hideko"))
         {
-            MessageChannel channel = event.getChannel();
             channel.sendMessage("Hello there! ✨").queue();
             return;
         }
 
         if(eventMessage.equalsIgnoreCase("ping"))
         {
-            MessageChannel channel = event.getChannel();
             channel.sendMessage("Pong!").queue();
             return;
         }
 
         if(eventMessage.equalsIgnoreCase("hideko verbose"))
         {
-            MessageChannel channel = event.getChannel();
-
             boolean verbose = Cache.isVerbose();
 
             String msg = verbose ? "off" : "on";

src/main/java/wtf/beatrice/hidekobot/listeners/SlashCommandListener.java

@@ -3,24 +3,28 @@ package wtf.beatrice.hidekobot.listeners;
 import net.dv8tion.jda.api.events.interaction.command.SlashCommandInteractionEvent;
 import net.dv8tion.jda.api.hooks.ListenerAdapter;
 import org.jetbrains.annotations.NotNull;
-import wtf.beatrice.hidekobot.commands.slash.*;
+import wtf.beatrice.hidekobot.objects.SlashCommand;
+
+import java.util.HashMap;
 
 public class SlashCommandListener extends ListenerAdapter
 {
 
+    HashMap<String, SlashCommand> registeredCommands = new HashMap<>();
+
+    public void registerCommand(SlashCommand command)
+    {
+        registeredCommands.remove(command.getCommandName());
+        registeredCommands.put(command.getCommandName(), command);
+    }
+
     @Override
     public void onSlashCommandInteraction(@NotNull SlashCommandInteractionEvent event)
     {
-        switch (event.getName().toLowerCase()) {
-            case "avatar" -> new AvatarCommand().runSlashCommand(event);
-            case "botinfo" -> new BotInfoCommand().runSlashCommand(event);
-            case "clear" -> new ClearCommand().runSlashCommand(event);
-            case "coinflip" -> new CoinFlipCommand().runSlashCommand(event);
-            case "die" -> new DieCommand().runSlashCommand(event);
-            case "help" -> new HelpCommand().runSlashCommand(event);
-            case "invite" -> new InviteCommand().runSlashCommand(event);
-            case "ping" -> new PingCommand().runSlashCommand(event);
-            case "say" -> new SayCommand().runSlashCommand(event);
-        }
+        String commandName = event.getName().toLowerCase();
+        SlashCommand command = registeredCommands.get(commandName);
+        if(command == null) return;
+
+        command.runSlashCommand(event);
     }
 }

src/main/java/wtf/beatrice/hidekobot/objects/SlashCommand.java

@@ -0,0 +1,11 @@
+package wtf.beatrice.hidekobot.objects;
+
+import net.dv8tion.jda.api.events.interaction.command.SlashCommandInteractionEvent;
+import org.jetbrains.annotations.NotNull;
+
+public interface SlashCommand
+{
+    String getCommandName();
+    void runSlashCommand(@NotNull SlashCommandInteractionEvent event);
+
+}