Add CustomCommandListener

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

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

@@ -0,0 +1,63 @@
+/*
+ * 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.linkage.LinkageType;
+import de.steamwar.bausystem.linkage.Linked;
+import de.steamwar.core.VersionedCallable;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerCommandPreprocessEvent;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.BookMeta;
+
+@Linked(LinkageType.LISTENER)
+public class CustomCommandListener implements Listener {
+
+    @EventHandler
+    public void onPlayerCommandPreprocess(PlayerCommandPreprocessEvent e) {
+        for (ItemStack item : e.getPlayer().getInventory().getContents()) {
+            if (item == null || isNoBook(item) || item.getItemMeta() == null) {
+                continue;
+            }
+
+            BookMeta bookMeta = ((BookMeta) item.getItemMeta());
+            if (bookMeta.getPageCount() == 0) {
+                continue;
+            }
+            if (bookMeta.getPage(1).isEmpty()) {
+                continue;
+            }
+            String s = bookMeta.getPage(1).split("\n")[0];
+            if (!s.startsWith("#!CMD ")) {
+                continue;
+            }
+            if (s.substring(6).equals(e.getMessage())) {
+                e.setCancelled(true);
+                new ScriptExecutor(bookMeta, e.getPlayer());
+                break;
+            }
+        }
+    }
+
+    private boolean isNoBook(ItemStack item) {
+        return VersionedCallable.call(new VersionedCallable<>(() -> ScriptListener_15.isNoBook(item), 15));
+    }
+}