ExprItemStackName - add setter

Author: ShaneBeee

src/main/java/com/github/skriptdev/skript/plugin/elements/expressions/item/ExprItemStackName.java

@@ -4,22 +4,31 @@
 import com.hypixel.hytale.server.core.Message;
 import com.hypixel.hytale.server.core.asset.type.item.config.Item;
 import com.hypixel.hytale.server.core.asset.type.item.config.ItemTranslationProperties;
+import com.hypixel.hytale.server.core.asset.type.item.config.metadata.ItemDisplayMetadata;
 import com.hypixel.hytale.server.core.inventory.ItemStack;
 import com.hypixel.hytale.server.core.util.MessageUtil;
 import io.github.syst3ms.skriptparser.lang.Expression;
+import io.github.syst3ms.skriptparser.lang.TriggerContext;
 import io.github.syst3ms.skriptparser.lang.properties.PropertyExpression;
 import io.github.syst3ms.skriptparser.parsing.ParseContext;
+import io.github.syst3ms.skriptparser.types.changers.ChangeMode;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
+import java.util.Optional;
+
 public class ExprItemStackName extends PropertyExpression<Object, String> {
 
     public static void register(SkriptRegistration reg) {
         reg.newPropertyExpression(ExprItemStackName.class, String.class,
-                "item (:name|description)", "itemstacks/items")
+                "item (:name|description)", "itemstack/item")
             .name("Item Name/Description")
             .description("Get the name/description of an Item/ItemStack.",
-                "These currently cannot be set.")
+                "Name/description of an ItemStack can be set, but cannot be set for an Item.")
+            .examples("set {_i} to itemstack of ingredient_stick",
+                "set item name of {_i} to formatted \"<blue>My Cool Item\"",
+                "set item description of {_i} to \"This item is special\", formatted \"<gradient:#31F527:#27EBF5>REALLY SPECIAL\" and \"I hope you enjoy!\"",
+                "add {_i} to inventory of player")
             .since("1.1.0")
             .register();
     }
@@ -49,4 +58,57 @@ public boolean init(Expression<?> @NotNull [] expressions, int matchedPattern, P
         return MessageUtil.toAnsiString(Message.translation(prop)).toAnsi();
     }
 
+    @Override
+    public Optional<Class<?>[]> acceptsChange(ChangeMode mode) {
+        if (mode == ChangeMode.SET || mode == ChangeMode.DELETE || mode == ChangeMode.RESET) {
+            if (this.name) {
+                return Optional.of(new Class<?>[]{String.class, Message.class});
+            } else {
+                return Optional.of(new Class<?>[]{String[].class, Message[].class});
+            }
+        }
+        return Optional.empty();
+    }
+
+    @Override
+    public void change(TriggerContext ctx, ChangeMode changeMode, Object[] changeWith) {
+        Message message = null;
+        if (changeMode == ChangeMode.SET) {
+            if (this.name) {
+                if (changeWith != null && changeWith.length > 0) {
+                    if (changeWith[0] instanceof Message m) {
+                        message = m;
+                    } else if (changeWith[0] instanceof String s) {
+                        message = Message.raw(s);
+                    }
+                }
+            } else if (changeWith != null) {
+                message = Message.empty();
+                for (int i = 0; i < changeWith.length; i++) {
+                    if (changeWith[i] instanceof Message m) {
+                        message.insert(m);
+                    } else if (changeWith[i] instanceof String s) {
+                        message.insert(s);
+                    }
+                    if (i < changeWith.length - 1) {
+                        message.insert("\n");
+                    }
+                }
+            }
+        }
+        Optional<?> single = getOwner().getSingle(ctx);
+        if (single.isEmpty()) return;
+
+        if (single.get() instanceof ItemStack itemStack) {
+            ItemDisplayMetadata meta = itemStack.getFromMetadataOrDefault(ItemDisplayMetadata.KEY, ItemDisplayMetadata.CODEC);
+            if (this.name) {
+                meta.setName(message);
+            } else {
+                meta.setDescription(message);
+            }
+            ItemStack itemStack1 = itemStack.withMetadata(ItemDisplayMetadata.KEYED_CODEC, meta);
+            getOwner().change(ctx, ChangeMode.SET, new ItemStack[]{itemStack1});
+        }
+    }
+
 }