command to display which plugins have hooks registered

src/main/java/me/youhavetrouble/yardwatch/YardWatch.java

@@ -1,11 +1,13 @@
 package me.youhavetrouble.yardwatch;
 
+import me.youhavetrouble.yardwatch.commands.YardWatchCommand;
 import me.youhavetrouble.yardwatch.hooks.FactionsUUIDProtection;
 import me.youhavetrouble.yardwatch.hooks.GriefPreventionProtection;
 import me.youhavetrouble.yardwatch.hooks.LWCXProtection;
 import me.youhavetrouble.yardwatch.hooks.SuperiorSkyBlockProtection;
 import me.youhavetrouble.yardwatch.hooks.TownyProtection;
 import me.youhavetrouble.yardwatch.hooks.WorldGuardProtection;
+import org.bukkit.command.PluginCommand;
 import org.bukkit.plugin.Plugin;
 import org.bukkit.plugin.RegisteredServiceProvider;
 import org.bukkit.plugin.ServicePriority;
@@ -17,6 +19,12 @@ public final class YardWatch extends JavaPlugin {
 
     @Override
     public void onEnable() {
+
+        PluginCommand command = getCommand("yardwatch");
+        if (command != null) {
+            command.setExecutor(new YardWatchCommand(this));
+        }
+
         if (shouldRegisterService("WorldGuard")) {
             getServer().getServicesManager().register(
                     Protection.class, new WorldGuardProtection(this), this, ServicePriority.Normal

src/main/java/me/youhavetrouble/yardwatch/commands/YardWatchCommand.java

@@ -0,0 +1,75 @@
+package me.youhavetrouble.yardwatch.commands;
+
+import me.youhavetrouble.yardwatch.Protection;
+import me.youhavetrouble.yardwatch.YardWatch;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+import org.bukkit.command.TabExecutor;
+import org.bukkit.plugin.RegisteredServiceProvider;
+import org.bukkit.util.StringUtil;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.*;
+
+public class YardWatchCommand implements TabExecutor {
+
+    private final YardWatch plugin;
+
+    private final String version;
+
+    public YardWatchCommand(YardWatch plugin) {
+        this.plugin = plugin;
+        this.version = plugin.getDescription().getVersion();
+    }
+
+    @Override
+    public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, @NotNull String[] args) {
+
+        if (args.length == 0) {
+            sendDefault(sender);
+            return true;
+        }
+
+        if (args[0].equalsIgnoreCase("hooks")) {
+            sendHooks(sender);
+            return true;
+        }
+
+        return false;
+    }
+
+    @Override
+    public @Nullable List<String> onTabComplete(@NotNull CommandSender sender, @NotNull Command command, @NotNull String alias, @NotNull String[] args) {
+        List<String> completions = new ArrayList<>();
+
+        if (args.length == 1) {
+            completions.add("hooks");
+            return StringUtil.copyPartialMatches(args[0], completions, new ArrayList<>());
+        }
+
+        return completions;
+    }
+
+    private void sendDefault(CommandSender sender) {
+        sender.sendMessage("YardWatch " + version);
+    }
+
+    private void sendHooks(CommandSender sender) {
+        Map<String, Integer> hooks = new HashMap<>();
+        Collection<RegisteredServiceProvider<Protection>> protections = plugin.getServer().getServicesManager().getRegistrations(Protection.class);
+        for (RegisteredServiceProvider<Protection> protection : protections) {
+            hooks.merge(protection.getPlugin().getName(), 1, Integer::sum);
+        }
+        if (hooks.isEmpty()) {
+            sender.sendMessage("No hooks registered.");
+            return;
+        }
+        sender.sendMessage("Hooks:");
+        for (Map.Entry<String, Integer> entry : hooks.entrySet()) {
+            String hook = entry.getValue() == 1 ? "hook" : "hooks";
+            sender.sendMessage(String.format("%s -> %s %s registered", entry.getKey(), entry.getValue(), hook));
+        }
+
+    }
+}

src/main/resources/plugin.yml

@@ -14,3 +14,10 @@ softdepend:
   - "Factions"
   - "SuperiorSkyblock2"
   - "LWC"
+commands:
+    yardwatch:
+        description: "YardWatch command"
+        usage: "/yardwatch <arg>"
+        permission: "yardwatch.command"
+        aliases:
+        - "yw"