Add GameMode update event and config

Author: Chew

src/main/java/pw/chew/listenernotifier/ListenerNotifier.java

@@ -1,10 +1,25 @@
 package pw.chew.listenernotifier;
 
+import org.bukkit.configuration.ConfigurationSection;
+import org.bukkit.configuration.file.FileConfiguration;
+import org.bukkit.plugin.java.JavaPlugin;
+import pw.chew.listenernotifier.events.GameModeChangeHandler;
+
 public final class ListenerNotifier extends JavaPlugin {
 
     @Override
     public void onEnable() {
+        FileConfiguration config = this.getConfig();
+        config.options().copyDefaults(true);
+        saveDefaultConfig();
         // Plugin startup logic
+        ConfigurationSection gameMode = config.getConfigurationSection("PlayerGameModeChangeEvent");
+        if (gameMode == null) {
+            getLogger().warning("Config is outdated! Please regenerate thanks.");
+        } else {
+            if (gameMode.getBoolean("enabled"))
+                getServer().getPluginManager().registerEvents(new GameModeChangeHandler(gameMode), this);
+        }
     }
 
     @Override

src/main/java/pw/chew/listenernotifier/events/GameModeChangeHandler.java

@@ -0,0 +1,44 @@
+package pw.chew.listenernotifier.events;
+
+import org.bukkit.Bukkit;
+import org.bukkit.configuration.ConfigurationSection;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerGameModeChangeEvent;
+import pw.chew.listenernotifier.util.ColorConverter;
+
+public class GameModeChangeHandler implements Listener {
+    private final ConfigurationSection config;
+
+    public GameModeChangeHandler(ConfigurationSection config) {
+        this.config = config;
+    }
+
+    @EventHandler
+    public void handleGamemode(PlayerGameModeChangeEvent event) {
+        for(Player player : Bukkit.getOnlinePlayers()) {
+            if(player.hasPermission(getPermissionNode())) {
+                String parsed = ColorConverter.convertColorCodesToChatColor(getMessage());
+                parsed = parsed.replace("{name}", event.getPlayer().getName()).replace("{gamemode}", event.getNewGameMode().name());
+                player.sendMessage(parsed);
+            }
+        }
+    }
+
+    private String getPermissionNode() {
+        if(config.getString("node") == null) {
+            return "notify.on.gamemode";
+        } else {
+            return "notify.on." + config.getString("node");
+        }
+    }
+
+    private String getMessage() {
+        if(config.getString("message") == null) {
+            return "&bListenerNotifier &7> &a{name} &bhas switched to &a{gamemode}&b!";
+        } else {
+            return config.getString("message");
+        }
+    }
+}

src/main/java/pw/chew/listenernotifier/util/ColorConverter.java

@@ -0,0 +1,20 @@
+package pw.chew.listenernotifier.util;
+
+import org.bukkit.ChatColor;
+
+public class ColorConverter {
+    public static String convertColorCodesToChatColor(String input) {
+        String[] colorchars = new String[]{"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f", "l", "m", "n", "o", "r"};
+        String[] bruh = input.split("&");
+        StringBuilder output = new StringBuilder();
+        for(String moment : bruh) {
+            for(String code : colorchars) {
+                if(moment.startsWith(code)) {
+                    moment = ChatColor.getByChar(code) + moment.substring(1);
+                }
+            }
+            output.append(moment);
+        }
+        return output.toString();
+    }
+}

src/main/resources/config.yml

@@ -0,0 +1,13 @@
+# ListenerNotifier Config
+
+# Called when the GameMode of the player is changed.
+PlayerGameModeChangeEvent:
+  enabled: true
+  # Node is notify.on.[what you put below]
+  # e.g. notify.on.gamemode
+  node: gamemode
+  # Message to send, &x color codes supported. RGB codes not supported.
+  # Supported tags:
+  # {name} - Name of player
+  # {gamemode} - The new game-mode
+  message: "&bListenerNotifier &7> &a{name} &bhas switched to &a{gamemode}&b!"