Fix problems on load in versions >1.19.3

src/main/java/net/tonimatasdev/perworldplugins/PerWorldPlugins.java

@@ -7,6 +7,7 @@
 import net.tonimatasdev.perworldplugins.manager.ListenerManager;
 import net.tonimatasdev.perworldplugins.metrics.Metrics;
 import net.tonimatasdev.perworldplugins.util.UpdateChecker;
+import net.tonimatasdev.perworldplugins.util.Version;
 import org.bukkit.Bukkit;
 import org.bukkit.ChatColor;
 import org.bukkit.plugin.java.JavaPlugin;
@@ -22,6 +23,8 @@ public static PerWorldPlugins getInstance() {
 
     @Override
     public void onLoad() {
+        // Detect the server version
+        if (Version.getVersion() <= 1192) return;
         // Enable PerWorldPlugins
         this.getPluginLoader().enablePlugin(this);
     }
@@ -38,8 +41,8 @@ public void onEnable() {
         getServer().getPluginManager().registerEvents(new Listeners(), this);
 
         // Register command and tab completer.
-        Objects.requireNonNull(Bukkit.getPluginCommand("perworldplugins")).setExecutor(new PrimaryCommand());
-        Objects.requireNonNull(Bukkit.getPluginCommand("perworldplugins")).setTabCompleter(new PrimaryCommand());
+        Objects.requireNonNull(getCommand("perworldplugins")).setExecutor(new PrimaryCommand());
+        Objects.requireNonNull(getCommand("perworldplugins")).setTabCompleter(new PrimaryCommand());
 
         // Register metrics.
         if (getConfig().getBoolean("metrics")) new Metrics(this, 15794);

src/main/java/net/tonimatasdev/perworldplugins/metrics/Metrics.java

@@ -11,7 +11,6 @@
 import java.lang.reflect.Method;
 import java.net.URL;
 import java.nio.charset.StandardCharsets;
-import java.util.Arrays;
 import java.util.Collection;
 import java.util.UUID;
 import java.util.concurrent.Executors;
@@ -25,6 +24,7 @@
 
 // bStats metrics, this class is not programmed for me.
 
+@SuppressWarnings("deprecation")
 public class Metrics {
     private final Plugin plugin;
 
@@ -41,11 +41,11 @@ public Metrics(JavaPlugin plugin, int serviceId) {
             config.addDefault("logFailedRequests", false);
             config.addDefault("logSentData", false);
             config.addDefault("logResponseStatusText", false);
-            config.options().setHeader(Arrays.asList("bStats (https://bStats.org) collects some basic information for plugin authors, like how",
-                    "many people use their plugin and their total player count. It's recommended to keep bStats",
-                    "enabled, but if you're not comfortable with this, you can turn this setting off. There is no",
-                    "performance penalty associated with having metrics enabled, and data sent to bStats is fully",
-                    "anonymous.")).copyDefaults(true);
+            config.options().header("bStats (https://bStats.org) collects some basic information for plugin authors, like how\n" +
+                    "many people use their plugin and their total player count. It's recommended to keep bStats\n" +
+                    "enabled, but if you're not comfortable with this, you can turn this setting off. There is no\n" +
+                    "performance penalty associated with having metrics enabled, and data sent to bStats is fully\n" +
+                    "anonymous.").copyDefaults(true);
 
             try {
                 config.save(configFile);

src/main/java/net/tonimatasdev/perworldplugins/util/Version.java

@@ -0,0 +1,22 @@
+package net.tonimatasdev.perworldplugins.util;
+
+import org.bukkit.Bukkit;
+
+public class Version {
+    private static final String[] versionString = Bukkit.getBukkitVersion().split("-")[0].split("\\.");
+
+    public static int getVersion() {
+        // Create new StringBuilder.
+        StringBuilder version = new StringBuilder();
+
+        // Append all versions.
+        for (String number : versionString) {
+            version.append(number);
+        }
+
+        if (versionString.length == 2) version.append(0);
+
+        // Return version int (Example: 188 - 1.8.8)
+        return Integer.parseInt(version.toString());
+    }
+}