Implement avatar resolution autocomplete

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

@@ -0,0 +1,37 @@
+package wtf.beatrice.hidekobot.listeners;
+
+import net.dv8tion.jda.api.events.interaction.command.CommandAutoCompleteInteractionEvent;
+import net.dv8tion.jda.api.hooks.ListenerAdapter;
+import net.dv8tion.jda.api.interactions.commands.Command;
+import wtf.beatrice.hidekobot.slashcommands.AvatarCommand;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class SlashCommandCompleter extends ListenerAdapter
+{
+
+    @Override
+    public void onCommandAutoCompleteInteraction(CommandAutoCompleteInteractionEvent event)
+    {
+        if(event.getName().equals("avatar"))
+        {
+            if(event.getFocusedOption().getName().equals("size"))
+            {
+
+                List<Command.Choice> options = new ArrayList<>();
+
+                for(int res : AvatarCommand.acceptedSizes)
+                {
+                    String resString = String.valueOf(res);
+                    String userInput = event.getFocusedOption().getValue();
+
+                    if(resString.startsWith(userInput))
+                        options.add(new Command.Choice(resString, res));
+                }
+
+                event.replyChoices(options).queue();
+            }
+        }
+    }
+}

src/main/java/wtf/beatrice/hidekobot/slashcommands/AvatarCommand.java

@@ -11,7 +11,7 @@ import java.awt.*;
 public class AvatarCommand
 {
     // discord api returns a broken image if you don't use specific sizes (powers of 2), so we limit it to these
-    private final int[] acceptedSizes = { 16, 32, 64, 128, 256, 512, 1024 };
+    public static final int[] acceptedSizes = { 16, 32, 64, 128, 256, 512, 1024 };
 
     public AvatarCommand(@NotNull SlashCommandInteractionEvent event)
     {

src/main/java/wtf/beatrice/hidekobot/utils/SlashCommandsUtil.java

@@ -22,7 +22,7 @@ public class SlashCommandsUtil
     {{
         add(Commands.slash("avatar", "Get someone's profile picture.")
                 .addOption(OptionType.USER, "user", "User you want to grab the avatar of.")
-                .addOption(OptionType.INTEGER, "size", "The size of the returned image."));
+                .addOption(OptionType.INTEGER, "size", "The size of the returned image.", false, true));
         add(Commands.slash("die", "Stop the bot's process")
                 .setDefaultPermissions(DefaultMemberPermissions.DISABLED));
         add(Commands.slash("clear", "Clear the current channel's chat.")
@@ -33,7 +33,7 @@ public class SlashCommandsUtil
         add(Commands.slash("ping", "Test if the bot is responsive."));
     }};
 
-    public static void updateSlashCommands()
+    public static void updateSlashCommands(boolean force)
     {
         JDA jdaInstance = HidekoBot.getAPI();
 
@@ -42,6 +42,12 @@ public class SlashCommandsUtil
 
         boolean update = false;
 
+        if(force)
+        {
+            update = true;
+        } else
+        {
+
             // for each command that we have already registered...
             for(Command currRegCmd : registeredCommands)
             {
@@ -101,6 +107,7 @@ public class SlashCommandsUtil
                     }
                 }
             }
+        }
 
         logger.log("Found " + registeredCommands.size() + " commands.");