Add ItemUtils

Signed-off-by: yoyosource <yoyosource@nidido.de>

BauSystem_Main/src/de/steamwar/bausystem/utils/ItemUtils.java

@@ -0,0 +1,62 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2021  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.bausystem.utils;
+
+import de.steamwar.bausystem.SWUtils;
+import lombok.experimental.UtilityClass;
+import org.bukkit.NamespacedKey;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.ItemMeta;
+import org.bukkit.persistence.PersistentDataContainer;
+import org.bukkit.persistence.PersistentDataType;
+
+@UtilityClass
+public class ItemUtils {
+
+    private final NamespacedKey ITEM_KEY = SWUtils.getNamespaceKey("bau_item");
+
+    public boolean isItem(ItemStack itemStack, String tag) {
+        if (itemStack == null) {
+            return false;
+        }
+        ItemMeta meta = itemStack.getItemMeta();
+        if (meta == null) {
+            return false;
+        }
+        PersistentDataContainer container = meta.getPersistentDataContainer();
+        if (!container.has(ITEM_KEY, PersistentDataType.STRING)) {
+            return false;
+        }
+        return tag.equals(container.get(ITEM_KEY, PersistentDataType.STRING));
+    }
+
+    public void setItem(ItemStack itemStack, String tag) {
+        if (itemStack == null) {
+            return;
+        }
+        ItemMeta meta = itemStack.getItemMeta();
+        if (meta == null) {
+            return;
+        }
+        meta.getPersistentDataContainer().set(ITEM_KEY, PersistentDataType.STRING, tag);
+        itemStack.setItemMeta(meta);
+    }
+
+}