Fix ItemBindCommand

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

BauSystem_Main/src/de/steamwar/bausystem/features/util/ItemBindCommand.java

@@ -7,74 +7,76 @@ import de.steamwar.command.TypeMapper;
 import de.steamwar.linkage.Linked;
 import org.bukkit.Bukkit;
 import org.bukkit.NamespacedKey;
+import org.bukkit.command.CommandMap;
 import org.bukkit.command.CommandSender;
-import org.bukkit.command.PluginCommand;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.meta.ItemMeta;
 import org.bukkit.persistence.PersistentDataType;
-import org.luaj.vm2.ast.Str;
 
-import java.util.*;
+import java.lang.reflect.Field;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.List;
+import java.util.Objects;
+import java.util.stream.Collectors;
 
 @Linked
 public class ItemBindCommand extends SWCommand {
 
+    private static final CommandMap commandMap;
+
+    static {
+        Field knownCommandsField;
+        try {
+            knownCommandsField = Bukkit.getServer().getClass().getDeclaredField("commandMap");
+            knownCommandsField.setAccessible(true);
+            commandMap = (CommandMap)knownCommandsField.get(Bukkit.getServer());
+        } catch (IllegalAccessException | NoSuchFieldException var2) {
+            Bukkit.shutdown();
+            throw new SecurityException("Oh shit. Commands cannot be registered.", var2);
+        }
+    }
+
     private static final NamespacedKey KEY = SWUtils.getNamespaceKey("command");
 
     public ItemBindCommand() {
-        super("item");
+        super("bind");
     }
 
-    @Register("bind")
-    public void bind(Player player, @Mapper("command") String... command) {
+    @Register // TODO: Description
+    public void bind(Player player, @Mapper("command") /* TODO @ErrorMessage("...") */ String... command) {
         player.sendMessage(command);
 
         ItemStack item = player.getInventory().getItemInMainHand();
         ItemMeta meta = item.getItemMeta();
 
         meta.getPersistentDataContainer().set(KEY, PersistentDataType.STRING, "");
-
     }
 
     @Mapper(value = "command", local = true)
     public TypeMapper<String> getCommandMapper() {
-        Map<String, String[]> commandMap = Bukkit.getCommandAliases();
-        Map<String, String> reverseCommandMap = new HashMap<>();
-        List<String> commands = new ArrayList<>();
-
-        commandMap.forEach((command, aliases) -> {
-            commands.add(command);
-            commands.addAll(Arrays.asList(aliases));
-
-            reverseCommandMap.put(command, command);
-            for (String alias : aliases) {
-                reverseCommandMap.put(alias, command);
-            }
-        });
-
         return new TypeMapper<String>() {
             @Override
-            public String map(CommandSender commandSender, String[] previousArguments, String s) {
+            public String map(CommandSender sender, PreviousArguments previousArguments, String s) {
                 return s;
             }
 
             @Override
             public Collection<String> tabCompletes(CommandSender sender, PreviousArguments previousArguments, String s) {
-                List<String> args = previousArguments.getAll(String.class);
-
-                if (args.isEmpty()) return commands;
-
-                String inputCommand = args.remove(0);
-                String command = reverseCommandMap.get(inputCommand);
-
-                if (command == null) return null;
-
-                PluginCommand pluginCommand = Bukkit.getPluginCommand(command);
-
-                if (pluginCommand == null) return null;
-
-                return pluginCommand.tabComplete(sender, inputCommand, args.toArray(new String[0]));
+                if (previousArguments.mappedArgs.length == 0) return null;
+                Object[] args = (Object[]) previousArguments.mappedArgs[previousArguments.mappedArgs.length - 1];
+                List<String> tabCompletes;
+                if (args.length == 0) {
+                    tabCompletes = commandMap.tabComplete(sender, "");
+                } else {
+                    tabCompletes = commandMap.tabComplete(sender, Arrays.stream(args).map(Objects::toString).collect(Collectors.joining(" ")) + " ");
+                }
+                if (tabCompletes == null) return null;
+                if (args.length == 0) {
+                    return tabCompletes.stream().map(t -> t.substring(1)).filter(t -> !t.contains(":")).collect(Collectors.toSet());
+                }
+                return tabCompletes;
             }
         };
     }