Plugin

<?php

namespace staffjoin;

use pocketmine\plugin\PluginBase;
use pocketmine\event\player\PlayerJoinEvent;
use pocketmine\event\player\PlayerQuitEvent;
use pocketmine\utils\Config;
use pocketmine\Player;
use pocketmine\Server;
use pocketmine\event\Listener;

class StaffJoin extends PluginBase implements Listener {

    public $config;

    public function configUpdater(): void {
        if($this->config->get("version") !== "1.0.0"){
            rename($this->getDataFolder() . "config.yml", $this->getDataFolder() . "config_old.yml");
            $this->saveResource("config.yml");
            $this->getLogger()->notice("We create a new config.yml file for you.");
    }
}

    public function onEnable() {
        $this->getServer()->getPluginManager()->registerEvents($this, $this);
        $this->saveResource("config.yml");
        $this->config = new Config($this->getDataFolder() . "config.yml", Config::YAML);
        $this->configUpdater();
        $this->perms = $this->getServer()->getPluginManager()->getPlugin("PurePerms");
        $this->getLogger()->info("Everything loaded!");
}

    public function onJoin(PlayerJoinEvent $event) {
        $group = $this->perms->getUserDataMgr()->getGroup($event->getPlayer())->getName();
        if($this->config->get("Enable-JoinMessage") == "true") {
            if($group == "Guest"){
            $event->setJoinMessage("§7".$event->getPlayer()->getName() . "has joined the server!");
          }
            if($group == "Mod"){
            $event->setJoinMessage("§fServer §9Mod§b" . $event->getPlayer()->getName() . "§fhas joined the server!");
          }
            if($group == "Admin"){
            $event->setJoinMessage("§fServer §eAdmin§a" . $event->getPlayer()->getName() . "§fhas joined the server!");
          }
            if($group == "Owner"){
            $event->setJoinMessage("§fServer §4Owner§6" . $event->getPlayer()->getName() . "§fhas joined the server!");
        }
    }
}

    public function onQuit(PlayerQuitEvent $event) {
        $group = $this->perms->getUserDataMgr()->getGroup($event->getPlayer())->getName();
        if($this->config->get("Enable-QuitMessage") == "true") {
            if($group == "Guest"){
            $event->setQuitMessage("§7".$event->getPlayer()->getName() . "§fhas left the server!");
          }
            if($group == "Mod"){
            $event->setQuitMessage("§fServer §9Mod§b" . $event->getPlayer()->getName() . "§fhas left the server!");
          }
            if($group == "Admin"){
            $event->setQuitMessage("§fServer §eAdmin§a" . $event->getPlayer()->getName() . "§fhas left the server!");
          }
            if($group == "Owner"){
            $event->setQuitMessage("§fServer §4Owner§6" . $event->getPlayer()->getName() . "§fhas left the server!");
            }
        }
    }
}