Main.class

package wcs;

import java.io.File;

import org.bukkit.Bukkit;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.block.Block;
import org.bukkit.block.BlockState;
import org.bukkit.block.Sign;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.block.SignChangeEvent;
import org.bukkit.event.player.PlayerChangedWorldEvent;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.event.player.PlayerQuitEvent;
import org.bukkit.plugin.java.JavaPlugin;
//import java.util.UUID;
//import org.bukkit.World;

public class Main extends JavaPlugin implements Listener {
    public void onEnable() {
    getServer().getPluginManager().registerEvents(this, this);
    //File configFile = new File(getDataFolder() + "/config.yml");
    File signsFile = new File(getDataFolder() + "/Signs.yml");
    //if (!configFile.exists()) {
        //saveDefaultConfig();
//  }
    if(!signsFile.exists()){
        Files.saveDefaultConfig(this);
    }
    getConfig();
    File pluginFolder = new File("./plugins/WorldCountSigns/");
    if (!pluginFolder.exists()) {
        pluginFolder.mkdir();
    }
    //if ((pluginFolder.exists()) && (!configFile.exists())){
        //saveDefaultConfig(); }
    if((pluginFolder.exists()) && (!signsFile.exists())){
        Files.saveDefaultConfig(this); }
    }


    public void onDisable() {

    }


    @EventHandler
    public void onSignCreate(SignChangeEvent event) {
            if (event.getBlock().getType() == Material.SIGN_POST
                    || event.getBlock().getType() == Material.WALL_SIGN) {
                String worldname = event.getLine(0);
                if(event.getLine(1).equalsIgnoreCase("[WCS]")){
                    if(!event.getLine(0).isEmpty()){
                        if(Bukkit.getWorld(worldname) != null){
                        event.setLine(1, "[" + worldname + "]" );
                        int PlayersOnline = Bukkit.getWorld(worldname).getPlayers().size();
                        String players = Integer.toString(PlayersOnline);
                        event.setLine(2, "Players: " + players);
                        Location loc = event.getBlock().getLocation();
                        int x = (int) loc.getX();
                        int y = (int) loc.getY();
                        int z = (int) loc.getZ();
                        String world = event.getBlock().getWorld().getName();
                        int signnumber = Files.getCustomConfig(this).getInt("signnumber") + 1;
                        Files.getCustomConfig(this).set("signs." + signnumber + ".x", x);
                        Files.getCustomConfig(this).set("signs." + signnumber + ".y", y);
                        Files.getCustomConfig(this).set("signs." + signnumber + ".z", z);
                        Files.getCustomConfig(this).set("signs." + signnumber + ".world", world);
                        Files.getCustomConfig(this).set("signs." + signnumber + ".worldb", worldname);
                        Files.getCustomConfig(this).set("signnumber", signnumber);
                        Files.saveCustomConfig(this);
                        //Files.reloadCustomConfig(this);
                        this.getLogger().info("World Sign Created At " + x + ", " + y + ", " + z + " in " + world);
                        event.setLine(0, "");
                        }
                    }else if(event.getLine(0).isEmpty()){
                        event.setLine(1, "[" + event.getPlayer().getWorld().getName() + "]" );
                        int PlayersOnline = event.getPlayer().getWorld().getPlayers().size();
                        String players = Integer.toString(PlayersOnline);
                        event.setLine(2, "Players: " + players);
                        Location loc = event.getBlock().getLocation();
                        int x = (int) loc.getX();
                        int y = (int) loc.getY();
                        int z = (int) loc.getZ();
                        String world = event.getBlock().getWorld().getName();
                        int signnumber = Files.getCustomConfig(this).getInt("signnumber") + 1;
                        Files.getCustomConfig(this).set("signs." + signnumber + ".x", x);
                        Files.getCustomConfig(this).set("signs." + signnumber + ".y", y);
                        Files.getCustomConfig(this).set("signs." + signnumber + ".z", z);
                        Files.getCustomConfig(this).set("signs." + signnumber + ".world", world);
                        Files.saveCustomConfig(this);
                        //Files.reloadCustomConfig(this);
                        this.getLogger().info("World Sign Created At " + x + ", " + y + ", " + z + " in " + world);


                    }
            }
            }
            }

    @EventHandler
    public void onPlayerMoveWorld(PlayerChangedWorldEvent event) {
            int sign = Files.getCustomConfig(this).getInt("signnumber") + 1;

            for(int currentSign = 1; currentSign<sign; currentSign++)
            {
                int x = Files.getCustomConfig(this).getInt("signs." + currentSign + ".x");
                int y = Files.getCustomConfig(this).getInt("signs." + currentSign + ".y");
                int z = Files.getCustomConfig(this).getInt("signs." + currentSign + ".z");
                String worldname = Files.getCustomConfig(this).getString("signs." + currentSign + ".worldb");
                String world1 = Files.getCustomConfig(this).getString("signs." + currentSign + ".world");
                Block block = Bukkit.getWorld(world1).getBlockAt(x, y, z);
                block.getChunk().load();
                BlockState state = block.getState();
                int PlayersOnline = Bukkit.getWorld(worldname).getPlayers().size();
                String players = Integer.toString(PlayersOnline);
                if (state instanceof Sign){
                    Sign s = (Sign) state;
                    s.setLine(2, "Players: " + players);
                    s.update(true);

                }
            }
        }
    @EventHandler
    public void onPlayerLeave(PlayerQuitEvent event){
        int sign = Files.getCustomConfig(this).getInt("signnumber") + 1;

        for(int currentSign = 1; currentSign<sign; currentSign++)
        {
            int x = Files.getCustomConfig(this).getInt("signs." + currentSign + ".x");
            int y = Files.getCustomConfig(this).getInt("signs." + currentSign + ".y");
            int z = Files.getCustomConfig(this).getInt("signs." + currentSign + ".z");
            String world1 = Files.getCustomConfig(this).getString("signs." + currentSign + ".world");
            String worldname = Files.getCustomConfig(this).getString("signs." + currentSign + ".worldb");
            Block block = Bukkit.getWorld(world1).getBlockAt(x, y, z);
            block.getChunk().load();
            BlockState state = block.getState();
            int PlayersOnline = Bukkit.getWorld(worldname).getPlayers().size();
            String players = null;
            if(worldname.equals(state.getWorld().getName())){
            players = Integer.toString(PlayersOnline - 1);
            }else{
            players = Integer.toString(PlayersOnline);
            }
            if (state instanceof Sign){
                Sign s = (Sign) state;
                s.setLine(2, "Players: " + players);
                s.update(true);
            }
        }
    }
    @EventHandler
    public void onPlayerJoin(PlayerJoinEvent event){
        int sign = Files.getCustomConfig(this).getInt("signnumber") + 1;

        for(int currentSign = 1; currentSign<sign; currentSign++)
        {

            int x = Files.getCustomConfig(this).getInt("signs." + currentSign + ".x");
            int y = Files.getCustomConfig(this).getInt("signs." + currentSign + ".y");
            int z = Files.getCustomConfig(this).getInt("signs." + currentSign + ".z");
            String world1 = Files.getCustomConfig(this).getString("signs." + currentSign + ".world");
            String worldname = Files.getCustomConfig(this).getString("signs." + currentSign + ".worldb");
            Block block = Bukkit.getWorld(world1).getBlockAt(x, y, z);
            block.getChunk().load();
            BlockState state = block.getState();
            int PlayersOnline = Bukkit.getWorld(worldname).getPlayers().size();
            String players = null;
            if(worldname.equals(state.getWorld().getName())){
            players = Integer.toString(PlayersOnline + 1);
            }else{
            players = Integer.toString(PlayersOnline);
            }
            if (state instanceof Sign){
                Sign s = (Sign) state;
                s.setLine(2, "Players: " + players);
                s.update(true);
            }
        }
    }
}