feat(cmd): added about sub-command

src/main/java/xyz/ineanto/nicko/command/NickoCommand.java

@@ -2,18 +2,52 @@ package xyz.ineanto.nicko.command;
 
 import io.papermc.paper.command.brigadier.BasicCommand;
 import io.papermc.paper.command.brigadier.CommandSourceStack;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.minimessage.MiniMessage;
+import net.kyori.adventure.text.minimessage.tag.resolver.Placeholder;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Entity;
 import org.bukkit.entity.Player;
 import org.jspecify.annotations.Nullable;
+import xyz.ineanto.nicko.Nicko;
+import xyz.ineanto.nicko.config.Configuration;
 import xyz.ineanto.nicko.gui.HomeGUI;
+import xyz.ineanto.nicko.language.Language;
+import xyz.ineanto.nicko.language.PlayerLanguage;
+
+import java.util.Collection;
+import java.util.List;
 
 @SuppressWarnings("UnstableApiUsage")
 public class NickoCommand implements BasicCommand {
     @Override
-    public void execute(CommandSourceStack stack, String[] strings) {
+    public void execute(CommandSourceStack stack, String[] args) {
         final Entity executor = stack.getExecutor();
         final Player player = (Player) executor;
+        final PlayerLanguage playerLanguage = new PlayerLanguage(player);
+
+        if (player == null) { return; }
+
+        if (args.length >= 1 && args[0].equalsIgnoreCase("about")) {
+            final Component firstAboutMessage = MiniMessage.miniMessage().deserialize(
+                    "<prefix> <gray>v<version></gray>",
+                    Placeholder.component("prefix", playerLanguage.getPrefixComponent()),
+                    Placeholder.unparsed("version", Nicko.getInstance().getPluginMeta().getVersion())
+            );
+
+            final Component secondAboutMessage = MiniMessage.miniMessage().deserialize(
+                    "<gradient:#01a97c:#8ffd54>Configuration</gradient> <gray>v<configversion></gray>, <gradient:#01a97c:#8ffd54>I18N</gradient> <gray>v<i18nversion></gray>",
+                    Placeholder.component("prefix", playerLanguage.getPrefixComponent()),
+                    Placeholder.unparsed("configversion", Configuration.VERSION.toString()),
+                    Placeholder.unparsed("i18nversion", Language.VERSION.toString())
+
+            );
+
+            player.sendMessage(firstAboutMessage);
+            player.sendMessage(secondAboutMessage);
+
+            return;
+        }
 
         new HomeGUI(player).open();
     }
@@ -23,6 +57,11 @@ public class NickoCommand implements BasicCommand {
         return sender instanceof Player && sender.isOp() || sender.hasPermission(permission());
     }
 
+    @Override
+    public Collection<String> suggest(CommandSourceStack commandSourceStack, String[] args) {
+        return List.of("about");
+    }
+
     @Override
     public @Nullable String permission() {
         return "nicko.use";

src/main/java/xyz/ineanto/nicko/language/PlayerLanguage.java

@@ -144,10 +144,18 @@ public class PlayerLanguage {
         }
     }
 
+    public Component getPrefixComponent() {
+        return MiniMessage.miniMessage().deserialize(readString(LanguageKey.PREFIX));
+    }
+
     private String readString(String key) {
         return yamlConfig.getString(key);
     }
 
+    private String getPrefix() {
+        return LegacyComponentSerializer.legacySection().serialize(getPrefixComponent());
+    }
+
     private String readStringWithMiniMessage(String key) {
         return LegacyComponentSerializer.legacySection().serialize(MiniMessage.miniMessage().deserialize(readString(key)));
     }
@@ -156,10 +164,6 @@ public class PlayerLanguage {
         return yamlConfig.getStringList(key);
     }
 
-    private String getPrefix() {
-        return readStringWithMiniMessage(LanguageKey.PREFIX);
-    }
-
     private String getWhoosh() {
         return readStringWithMiniMessage(LanguageKey.WHOOSH);
     }

src/main/java/xyz/ineanto/nicko/version/Version.java

@@ -15,7 +15,7 @@ public record Version(int major, int minor, int patch) implements Comparable<Ver
     }
 
     @Override
-    public String toString() {
+    public @NotNull String toString() {
         return major + "." + minor + "." + patch;
     }