feat: ✨ remove prefix from command

src/main/java/eu/endermite/censura/config/CachedConfig.java

@@ -49,6 +49,7 @@ public CachedConfig() {
         if (config.getBoolean("checks.nametag-use", true))
             registerListener(EntityRenameListener.class);
 
+        registerListener(CommandColonListener.class);
 
         ConfigurationSection filter = config.getConfigurationSection("filter");
         if (filter == null) {

src/main/java/eu/endermite/censura/listener/CommandColonListener.java

@@ -0,0 +1,45 @@
+package eu.endermite.censura.listener;
+
+import eu.endermite.censura.Censura;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerCommandPreprocessEvent;
+
+public class CommandColonListener implements Listener {
+    @EventHandler
+    public void onChatEven(PlayerCommandPreprocessEvent event) {
+        event.setMessage(getMessageWithoutPrefix(event));
+    }
+
+    /** /minecraft:xp -> /xp */
+    private String getMessageWithoutPrefix(PlayerCommandPreprocessEvent event) {
+        String message = event.getMessage();
+        String[] messageAsArray = message.split(" ");
+        String commandName = messageAsArray[0];
+
+        if (!isInvalidCommand(message) && commandName.contains(":")) {
+            String commandNameWithoutPrefix = commandName.split(":")[1];
+            messageAsArray[0] = commandNameWithoutPrefix;
+
+            String messageWithoutPrefix = messageAsArray.toString();
+            Censura.getPlugin().getLogger().info(String.format("Censura: Prefix removed: %s", commandName));
+
+            return messageWithoutPrefix;
+        }
+
+        return message;
+    }
+
+    private boolean isInvalidCommand(String command) {
+//      only syntax like minecraft:xp should work
+        if (colonCount(command) > 1) {
+            return true;
+        }
+
+        return false;
+    }
+
+    private long colonCount(String message) {
+        return message.chars().filter(i -> i == ':').count();
+    }
+}