Add a /geyser list command (Closes #342)

connector/src/main/java/org/geysermc/connector/command/CommandManager.java

@@ -29,6 +29,7 @@ import lombok.Getter;
 import org.geysermc.common.command.ICommandManager;
 import org.geysermc.connector.GeyserConnector;
 import org.geysermc.connector.command.defaults.HelpCommand;
+import org.geysermc.connector.command.defaults.ListCommand;
 import org.geysermc.connector.command.defaults.ReloadCommand;
 import org.geysermc.connector.command.defaults.StopCommand;
 
@@ -47,6 +48,7 @@ public abstract class CommandManager implements ICommandManager {
         this.connector = connector;
 
         registerCommand(new HelpCommand(connector, "help", "Shows help for all registered commands.", "geyser.command.help"));
+        registerCommand(new ListCommand(connector, "list", "List all players connected through Geyser.", "geyser.command.list"));
         registerCommand(new ReloadCommand(connector, "reload", "Reloads the Geyser configurations. Kicks all players when used!", "geyser.command.reload"));
         registerCommand(new StopCommand(connector, "stop", "Shuts down Geyser.", "geyser.command.stop"));
     }

connector/src/main/java/org/geysermc/connector/command/defaults/ListCommand.java

@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @author GeyserMC
+ * @link https://github.com/GeyserMC/Geyser
+ */
+
+package org.geysermc.connector.command.defaults;
+
+import org.geysermc.common.ChatColor;
+import org.geysermc.connector.GeyserConnector;
+import org.geysermc.connector.command.CommandSender;
+import org.geysermc.connector.command.GeyserCommand;
+import org.geysermc.connector.network.session.GeyserSession;
+
+import java.util.stream.Collectors;
+
+public class ListCommand extends GeyserCommand {
+
+    private GeyserConnector connector;
+
+    public ListCommand(GeyserConnector connector, String name, String description, String permission) {
+        super(name, description, permission);
+
+        this.connector = connector;
+    }
+
+    @Override
+    public void execute(CommandSender sender, String[] args) {
+        sender.sendMessage(ChatColor.YELLOW + "Online Players (" + connector.getPlayers().size() + "): " + ChatColor.WHITE + connector.getPlayers().values().stream().map(GeyserSession::getName).collect(Collectors.joining(" ")));
+    }
+}