Update notifier message on join!

config.yml

@@ -61,7 +61,7 @@ messages:
     # Shown when a player tries to sleep and sleeping is blocked
     blocked: "&cSleeping is disabled."
   miscellaneous:
-    # Prefix for Harbor command messages
+    # Prefix for Harbor command/miscellaneous messages
     prefix: "&8&l(&6&lHarbor&8&l) "
     # Display server version in console
     running: "&7Running on version [version]."

src/main/java/mykyta/Harbor/Actionbar/Actionbar.java

@@ -1,7 +0,0 @@
-package mykyta.Harbor.Actionbar;
-
-import org.bukkit.entity.Player;
-
-public interface Actionbar {
-    public void sendActionbar(Player player, String message);
-}

src/main/java/mykyta/Harbor/Events/PlayerJoin.java

@@ -0,0 +1,23 @@
+package mykyta.Harbor.Events;
+
+import org.bukkit.Bukkit;
+import org.bukkit.ChatColor;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerJoinEvent;
+
+import mykyta.Harbor.Config;
+import mykyta.Harbor.Updater;
+import mykyta.Harbor.Util;
+
+public class PlayerJoin implements Listener {
+    @EventHandler
+	public void onPlayerJoin(PlayerJoinEvent event) {
+        Updater updater = new Updater();
+        Config config = new Config();
+        Util util = new Util();
+
+        String json = "[{\"text\":\"[prefix]§7Hey there, Harbor [version] was released! \"},{\"text\":\"§7§oClick §7§ome §7§oto §7§oupdate!\",\"clickEvent\":{\"action\":\"run_command\",\"value\":\"/harbor update\"},\"hoverEvent\":{\"action\":\"show_text\",\"value\":\"§a§l↑ §7Update Harbor.\"}}]";
+        if (event.getPlayer().isOp() && updater.check()) util.sendJSONMessage(event.getPlayer(), json.replace("[version]", updater.getLatest()).replace("[prefix]", config.getString("messages.miscellaneous.prefix")).replace("&", "§"));
+    }
+}

src/main/java/mykyta/Harbor/Harbor.java

@@ -7,6 +7,7 @@ import org.bukkit.plugin.java.JavaPlugin;
 
 import mykyta.Harbor.Events.BedEnter;
 import mykyta.Harbor.Events.BedLeave;
+import mykyta.Harbor.Events.PlayerJoin;
 
 public class Harbor extends JavaPlugin {
     private Logger log = Bukkit.getLogger();
@@ -19,6 +20,7 @@ public class Harbor extends JavaPlugin {
         saveDefaultConfig();
         Bukkit.getPluginManager().registerEvents(new BedEnter(), this);
         Bukkit.getPluginManager().registerEvents(new BedLeave(), this);
+        if (config.getBoolean("features.notifier")) Bukkit.getPluginManager().registerEvents(new PlayerJoin(), this);
         util.setupNMS();
 
         // Check for updates

src/main/java/mykyta/Harbor/NMS/NMS.java

@@ -0,0 +1,8 @@
+package mykyta.Harbor.NMS;
+
+import org.bukkit.entity.Player;
+
+public interface NMS {
+    public void sendActionbar(Player player, String message);
+    public void sendJSONMessage(Player player, String json);
+}

src/main/java/mykyta/Harbor/NMS/NMS_1_13_R2.java

@@ -1,17 +1,26 @@
-package mykyta.Harbor.Actionbar;
+package mykyta.Harbor.NMS;
 
 import org.bukkit.ChatColor;
 import org.bukkit.craftbukkit.v1_13_R2.entity.CraftPlayer;
 import org.bukkit.entity.Player;
 
 import net.minecraft.server.v1_13_R2.IChatBaseComponent;
+import net.minecraft.server.v1_13_R2.PacketPlayOutChat;
 import net.minecraft.server.v1_13_R2.PacketPlayOutTitle;
+import net.minecraft.server.v1_13_R2.IChatBaseComponent.ChatSerializer;
 
-public class Actionbar_1_13_R2 implements Actionbar {
+public class NMS_1_13_R2 implements NMS {
 	@Override
 	public void sendActionbar(Player player, String message) {
 	    IChatBaseComponent titleComponent = IChatBaseComponent.ChatSerializer.a("{\"text\": \"" + ChatColor.translateAlternateColorCodes('&', message) + "\"}");
 	    PacketPlayOutTitle titlePacket = new PacketPlayOutTitle(PacketPlayOutTitle.EnumTitleAction.ACTIONBAR, titleComponent);
 	    ((CraftPlayer) player).getHandle().playerConnection.sendPacket(titlePacket);  
 	}
+
+	@Override
+	public void sendJSONMessage(Player player, String json) {
+		IChatBaseComponent component = ChatSerializer.a(json);
+		PacketPlayOutChat packet = new PacketPlayOutChat(component);
+		((CraftPlayer) player).getHandle().playerConnection.sendPacket(packet);
+	}
 }

src/main/java/mykyta/Harbor/Updater.java

@@ -13,6 +13,8 @@ import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
 
 public class Updater {
+    private String latest = "";
+    
     /**
      * Checks for an update using the Spiget API
      * @see https://spiget.org/
@@ -44,32 +46,21 @@ public class Updater {
                 return false;
             }
             else {
-                System.out.println("Running an outdated version! Latest is " + releases.get(releases.size() - 1));
+                latest = releases.get(releases.size() - 1);
+                System.out.println("Running an outdated version! Latest is " + latest);
                 return true;
             }
-            
-
-            /*
-            int current = Integer.parseInt(String.valueOf(util.version).replace(".", ""));
-            int latest = releases.get(releases.size() - 1);
-            System.out.println("Current version: " + current);
-            System.out.println("Latest release: "  + latest);
-            if (util.version < latest) {
-                System.out.println("Update available! Version " + String.valueOf(latest));
-                return true;    
-            }
-            else if (util.version < latest) {
-                System.out.println("Hmm... you're using some sort of time travel technology (your version is newer than the latest release). Welp, at least you don't have updates to worry about any time soon.");
-                return true;   
-            }
-            else {
-                System.out.println("Using the latest version.");
-                return false; 
-            }  */
         }
         catch (IOException e) {
             System.out.println("Failed to check for updates.");
             return false;
         }
     }
+
+    /**
+     * Returns the latest version number
+     */
+    public String getLatest() {
+        return latest;
+    }
 }

src/main/java/mykyta/Harbor/Util.java

@@ -8,16 +8,16 @@ import org.bukkit.GameMode;
 import org.bukkit.World;
 import org.bukkit.entity.Player;
 
-import mykyta.Harbor.Actionbar.Actionbar;
+import mykyta.Harbor.NMS.NMS;
-import mykyta.Harbor.Actionbar.Actionbar_1_13_R2;
+import mykyta.Harbor.NMS.NMS_1_13_R2;
 import net.md_5.bungee.api.ChatColor;
 
 public class Util {
     public static HashMap<World, Integer> sleeping = new HashMap<World, Integer>();
-    public String version = "1.5";
+    public String version = "1.4.2";
     public static boolean debug = false;
     private Logger log = Bukkit.getLogger();
-    private static Actionbar actionbar;
+    private static NMS nms;
     Config config = new Config();
 
     /**
@@ -33,7 +33,7 @@ public class Util {
         Bukkit.getServer().getConsoleSender().sendMessage(ChatColor.translateAlternateColorCodes('&', config.getString("messages.miscellaneous.prefix") + config.getString("messages.miscellaneous.running").replace("[version]", version)));
             
         if (version.equals("v1_13_R2")) {
-            actionbar = new Actionbar_1_13_R2();
+            nms = new NMS_1_13_R2();
         }
     }
 
@@ -76,7 +76,7 @@ public class Util {
      * @param message Actionbar message with color codes
      */
     public void sendActionbar(Player player, String message) {
-        actionbar.sendActionbar(player, message);
+        nms.sendActionbar(player, message);
     }
 
     /**
@@ -88,7 +88,7 @@ public class Util {
      */
     public void sendActionbar(Player player, String message, World world) {
         Config config = new Config();
-        actionbar.sendActionbar(player, message
+        nms.sendActionbar(player, message
         .replace("[sleeping]", String.valueOf(sleeping.get(world)))
         //TODO add bypassers functionaliyt .replace("[online]", String.valueOf(world.getPlayers().size() - bypassers.size()))
         //  .replace("[needed]", String.valueOf(Math.max(0, Math.round(world.getPlayers().size() * Float.parseFloat(plugin.getConfig().getString("values.percent")) - bypassers.size() - ((Integer)worlds.get(world)).intValue())))));
@@ -96,6 +96,15 @@ public class Util {
         .replace("[needed]", String.valueOf(Math.max(0, Math.round(world.getPlayers().size() * Float.parseFloat(config.getString("values.percent")) - (sleeping.get(world)).intValue())))));
     }
 
+    /**
+     * Sends a custom JSON message to selected player
+     * @param player Player to send message to
+     * @param JSON Message in JSON format
+     */
+    public void sendJSONMessage(Player player, String JSON) {
+        nms.sendJSONMessage(player, JSON);
+    }
+
     /**
      * Returns true if player is in survival mode
      * @param player Target player