Implement a command that allows to reset island name.

Fixes #1879

src/main/java/world/bentobox/bentobox/api/commands/CompositeCommand.java

@@ -309,6 +309,14 @@ public abstract class CompositeCommand extends Command implements PluginIdentifi
         return plugin.getIslands();
     }
 
+    /**
+     * Convenience method to get the island manager
+     * @return IslandsManager
+     */
+    protected IslandsManager getIslandsManager() {
+        return plugin.getIslandsManager();
+    }
+
     /**
      * @return this command's sub-level. Top level is 0.
      * Every time a command registers with a parent, their level will be set.

src/main/java/world/bentobox/bentobox/api/commands/admin/AdminResetNameCommand.java

@@ -0,0 +1,129 @@
+package world.bentobox.bentobox.api.commands.admin;
+
+import org.eclipse.jdt.annotation.Nullable;
+import java.util.List;
+import java.util.Optional;
+import java.util.UUID;
+
+import world.bentobox.bentobox.api.commands.CompositeCommand;
+import world.bentobox.bentobox.api.localization.TextVariables;
+import world.bentobox.bentobox.api.user.User;
+import world.bentobox.bentobox.database.objects.Island;
+import world.bentobox.bentobox.util.Util;
+
+
+/**
+ * This command resets players island name.
+ * @author BONNe
+ */
+public class AdminResetNameCommand extends CompositeCommand
+{
+    /**
+     * Default constructor.
+     * @param command Parent command.
+     */
+    public AdminResetNameCommand(CompositeCommand command)
+    {
+        super(command, "resetname");
+    }
+
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void setup()
+    {
+        this.setPermission("mod.resetname");
+        this.setOnlyPlayer(true);
+        this.setDescription("commands.admin.resetname.description");
+    }
+
+
+    /**
+     * @param user the {@link User} who is executing this command.
+     * @param label the label which has been used to execute this command.
+     *              It can be {@link CompositeCommand#getLabel()} or an alias.
+     * @param args the command arguments.
+     * @return {@code true} if name can be reset, {@code false} otherwise.
+     */
+    @Override
+    public boolean canExecute(User user, String label, List<String> args)
+    {
+        if (args.size() == 1)
+        {
+            UUID playerUUID = Util.getUUID(args.get(0));
+
+            if (playerUUID == null)
+            {
+                user.sendMessage("general.errors.unknown-player", TextVariables.NAME, args.get(0));
+                return false;
+            }
+
+            this.island = this.getIslandsManager().getIsland(this.getWorld(), playerUUID);
+        }
+        else
+        {
+            this.island = this.getIslandsManager().getIslandAt(user.getLocation()).orElse(null);
+        }
+
+        if (this.island == null)
+        {
+            user.sendMessage("general.errors.player-has-no-island");
+            return false;
+        }
+
+        return true;
+    }
+
+
+    /**
+     * @param user the {@link User} who is executing this command.
+     * @param label the label which has been used to execute this command.
+     *              It can be {@link CompositeCommand#getLabel()} or an alias.
+     * @param args the command arguments.
+     * @return {@code true}
+     */
+    @Override
+    public boolean execute(User user, String label, List<String> args)
+    {
+        if (this.island == null)
+        {
+            this.showHelp(this, user);
+            return true;
+        }
+
+        // Resets the island name
+        this.island.setName(null);
+        user.sendMessage("commands.admin.resetname.success", TextVariables.NAME, this.getPlayers().getName(this.island.getOwner()));
+        return true;
+    }
+
+
+    /**
+     * @param user the {@link User} who is executing this command.
+     * @param alias alias for command
+     * @param args command arguments
+     * @return Optional of possible values.
+     */
+    @Override
+    public Optional<List<String>> tabComplete(User user, String alias, List<String> args) {
+        // Return the player names
+
+        if (args.size() == 1)
+        {
+            return Optional.of(Util.getOnlinePlayerList(user));
+        }
+        else
+        {
+            return Optional.empty();
+        }
+    }
+
+
+    /**
+     * Island which name must be changed.
+     */
+    @Nullable
+    private Island island;
+}

src/main/java/world/bentobox/bentobox/api/commands/admin/DefaultAdminCommand.java

@@ -94,6 +94,8 @@ public abstract class DefaultAdminCommand extends CompositeCommand {
         new AdminSetProtectionCenterCommand(this);
         // Delete homes
         new AdminDeleteHomesCommand(this);
+        // Reset name
+        new AdminResetNameCommand(this);
     }
 
     /**

src/main/resources/locales/en-US.yml

@@ -422,6 +422,9 @@ commands:
         description: "removes deaths to the player"
         parameters: "<player> <deaths>"
         success: "&a Successfully removed &b [number] &a deaths to &b [name], decreasing the total to &b [total]&a  deaths."
+    resetname:
+      description: "reset player island name"
+      success: "&a Successfully reset [name]'s island name."
   bentobox:
     description: "BentoBox admin command"
     about: