feat: add sign prompt

src/main/java/xyz/ineanto/nicko/gui/prompt/SignPrompt.java

@@ -0,0 +1,95 @@
+package xyz.ineanto.nicko.gui.prompt;
+
+import de.rapha149.signgui.SignGUI;
+import de.rapha149.signgui.SignGUIAction;
+import de.rapha149.signgui.exception.SignGUIVersionException;
+import org.bukkit.Material;
+import org.bukkit.entity.Player;
+import xyz.ineanto.nicko.language.LanguageKey;
+import xyz.ineanto.nicko.language.PlayerLanguage;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Optional;
+import java.util.concurrent.atomic.AtomicReference;
+
+public class SignPrompt implements Prompt {
+    private final Player player;
+    private final PlayerLanguage playerLanguage;
+
+    private List<String> lines = List.of(
+            "VVVVVVVVVVVVVVV",
+            null,
+            null,
+            "ΛΛΛΛΛΛΛΛΛΛΛΛΛΛΛ"
+    );
+
+    private final AtomicReference<Optional<String>> name = new AtomicReference<>();
+    private final AtomicReference<Optional<String>> skin = new AtomicReference<>();
+
+    public SignPrompt(Player player) {
+        this.player = player;
+        this.playerLanguage = new PlayerLanguage(player);
+    }
+
+    @Override
+    public Optional<String[]> displayNameThenSkinPrompt() {
+        try {
+            final SignGUI gui = SignGUI.builder()
+                    .setLines(lines.toArray(new String[0]))
+                    .setType(Material.OAK_SIGN)
+                    .setHandler((_, result) -> {
+                        String internalLine2 = result.getLineWithoutColor(2);
+
+                        if (internalLine2.isEmpty()) {
+                            return List.of(SignGUIAction.displayNewLines(lines.toArray(new String[0])));
+                        }
+
+                        name.set(Optional.of(internalLine2));
+                        return Collections.emptyList();
+                    })
+                    .build();
+
+            gui.open(player);
+            return Optional.of(new String[]{name.get().orElse(player.getName()), skin.get().orElse(player.getName())});
+        } catch (SignGUIVersionException exception) {
+            return Optional.empty();
+        }
+    }
+
+    @Override
+    public Optional<String> displaySkinPrompt() {
+        this.lines.set(1, playerLanguage.translate(LanguageKey.GUI.NEW_SKIN, false));
+        return displaySign(skin);
+    }
+
+    @Override
+    public Optional<String> displayNamePrompt() {
+        this.lines.set(1, playerLanguage.translate(LanguageKey.GUI.NEW_NAME, false));
+        return displaySign(name);
+    }
+
+    private Optional<String> displaySign(AtomicReference<Optional<String>> reference) {
+        try {
+            final SignGUI gui = SignGUI.builder()
+                    .setLines(lines.toArray(new String[0]))
+                    .setType(Material.OAK_SIGN)
+                    .setHandler((_, result) -> {
+                        final String internalLine2 = result.getLineWithoutColor(2);
+
+                        if (internalLine2.isEmpty()) {
+                            return List.of(SignGUIAction.displayNewLines(lines.toArray(new String[0])));
+                        }
+
+                        reference.set(Optional.of(internalLine2));
+                        return Collections.emptyList();
+                    })
+                    .build();
+
+            gui.open(player);
+            return reference.get();
+        } catch (SignGUIVersionException exception) {
+            return Optional.empty();
+        }
+    }
+}