Add UnsignCommand

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

BauSystem_Main/src/BauSystem.properties

@@ -471,6 +471,10 @@ REGION_TNT_ON=§aTNT-Schaden aktiviert
 REGION_TNT_OFF=§cTNT-Schaden deaktiviert
 REGION_TNT_TB=§aTNT-Schaden außerhalb Baurahmen aktiviert
 REGION_TNT_BUILD=§cEine Explosion hätte Blöcke im Baubereich zerstört
+
+# Unsign Book
+UNSIGN_HELP_1=§8/§eunsign §8- §7Mache ein Buch beschreibbar
+
 # Team
 LOCK_SCHEM_NO_USER=§7Dieser Spieler existiert nicht!
 LOCK_SCHEM_NO_SCHEM=§7Dieser Spieler besitzt keine Schematic mit diesem Namen!

BauSystem_Main/src/de/steamwar/bausystem/features/script/UnsignCommand.java

@@ -0,0 +1,55 @@
+/*
+ * 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.features.script;
+
+import de.steamwar.bausystem.BauSystem;
+import de.steamwar.bausystem.linkage.LinkageType;
+import de.steamwar.bausystem.linkage.Linked;
+import de.steamwar.command.SWCommand;
+import de.steamwar.core.VersionedCallable;
+import org.bukkit.Material;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+
+@Linked(LinkageType.COMMAND)
+public class UnsignCommand extends SWCommand {
+
+    public UnsignCommand() {
+        super("unsign");
+    }
+
+    @Register(help = true)
+    public void genericHelp(Player p, String... args) {
+        BauSystem.MESSAGE.sendPrefixless("COMMAND_HELP_HEAD", p, "Unsign");
+        BauSystem.MESSAGE.sendPrefixless("UNSIGN_HELP_1", p);
+    }
+
+    @Register
+    public void unsignCommand(Player p) {
+        ItemStack itemStack = p.getInventory().getItemInMainHand();
+        if (isNoBook(itemStack)) return;
+        itemStack.setType(Material.WRITABLE_BOOK);
+        p.getInventory().setItemInMainHand(itemStack);
+    }
+
+    private boolean isNoBook(ItemStack item) {
+        return VersionedCallable.call(new VersionedCallable<>(() -> ScriptListener_15.isNoBook(item), 15));
+    }
+}