Classes Class

package me.frostedtimmy.classes.util;

import org.bukkit.Bukkit;
import org.bukkit.Material;
import org.bukkit.Sound;
import org.bukkit.entity.Player;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.ItemStack;
import org.bukkit.potion.PotionEffectType;

import me.frostedtimmy.classes.TimmyClasses;
import net.md_5.bungee.api.ChatColor;

public class Classes {
    TimmyClasses main;
    private MySQLUtil sql = new MySQLUtil();
    private CustomItems item = new CustomItems();

    String prefix = ChatColor.translateAlternateColorCodes('&', main.getConfig().getString("prefix"));

    public void openGui(Player player) {
        Inventory inv = Bukkit.createInventory(null, 9, ChatColor.LIGHT_PURPLE + "" + ChatColor.BOLD + "Class Selector");

        ItemStack tank = item.tankClay();
        ItemStack dps = item.dpsClay();
        ItemStack assassin = item.assassinClay();
        ItemStack ench = item.enchanterClay();
        ItemStack bruiser = item.bruiserClay();

        inv.setItem(2, tank);
        inv.setItem(3, dps);
        inv.setItem(4, assassin);
        inv.setItem(5, ench);
        inv.setItem(6, bruiser);

        player.openInventory(inv);
    }

    public void tankClass(Player p) {
        sql.setClassid(p, 1);

        p.sendMessage(prefix + ChatColor.translateAlternateColorCodes('&', main.getConfig().getString("tank")));
        p.playSound(p.getLocation(), Sound.UI_BUTTON_CLICK, 1.0f, 2.0f);

        p.removePotionEffect(PotionEffectType.DAMAGE_RESISTANCE);
        p.removePotionEffect(PotionEffectType.INCREASE_DAMAGE);
        p.removePotionEffect(PotionEffectType.SPEED);

        p.addPotionEffect(PotionEffectType.DAMAGE_RESISTANCE.createEffect(Integer.MAX_VALUE, 2), true);
        p.addPotionEffect(PotionEffectType.WEAKNESS.createEffect(Integer.MAX_VALUE, 1), true);

        p.setMaxHealth(36);
        p.setHealth(36);
    }

    public void dpsClass(Player p) {
        sql.setClassid(p, 2);

        p.sendMessage(prefix + ChatColor.translateAlternateColorCodes('&', main.getConfig().getString("dps")));
        p.playSound(p.getLocation(), Sound.UI_BUTTON_CLICK, 1.0f, 2.0f);

        p.removePotionEffect(PotionEffectType.DAMAGE_RESISTANCE);
        p.removePotionEffect(PotionEffectType.INCREASE_DAMAGE);
        p.removePotionEffect(PotionEffectType.WEAKNESS);
        p.removePotionEffect(PotionEffectType.SPEED);

        p.addPotionEffect(PotionEffectType.DAMAGE_RESISTANCE.createEffect(Integer.MAX_VALUE, 0), true);

        p.setMaxHealth(20);
        p.setHealth(20);
    }

    public void assassinClass(Player p) {
        sql.setClassid(p, 3);

        p.sendMessage(prefix + ChatColor.translateAlternateColorCodes('&', main.getConfig().getString("assassin")));
        p.playSound(p.getLocation(), Sound.UI_BUTTON_CLICK, 1.0f, 2.0f);

        p.removePotionEffect(PotionEffectType.DAMAGE_RESISTANCE);
        p.removePotionEffect(PotionEffectType.INCREASE_DAMAGE);
        p.removePotionEffect(PotionEffectType.WEAKNESS);
        p.removePotionEffect(PotionEffectType.SPEED);

        p.addPotionEffect(PotionEffectType.INCREASE_DAMAGE.createEffect(Integer.MAX_VALUE, 2), true);
        p.addPotionEffect(PotionEffectType.SPEED.createEffect(Integer.MAX_VALUE, 0), true);

        p.setMaxHealth(16);
    }

    public void enchanterClass(Player p) {
        sql.setClassid(p, 4);

        p.sendMessage(prefix + ChatColor.translateAlternateColorCodes('&', main.getConfig().getString("enchanter")));
        p.playSound(p.getLocation(), Sound.UI_BUTTON_CLICK, 1.0f, 2.0f);

        p.removePotionEffect(PotionEffectType.DAMAGE_RESISTANCE);
        p.removePotionEffect(PotionEffectType.INCREASE_DAMAGE);
        p.removePotionEffect(PotionEffectType.WEAKNESS);
        p.removePotionEffect(PotionEffectType.SPEED);

        p.addPotionEffect(PotionEffectType.DAMAGE_RESISTANCE.createEffect(Integer.MAX_VALUE, 0), true);
        p.addPotionEffect(PotionEffectType.INCREASE_DAMAGE.createEffect(Integer.MAX_VALUE, 0), true);

        p.getInventory().addItem(new ItemStack(Material.GOLD_HOE));
        p.getInventory().addItem(new ItemStack(Material.STONE_HOE));

        p.setMaxHealth(26);
        p.setHealth(26);
    }

    public void bruiserClass(Player p) {
        sql.setClassid(p, 5);

        p.sendMessage(prefix + ChatColor.translateAlternateColorCodes('&', main.getConfig().getString("brusier")));
        p.playSound(p.getLocation(), Sound.UI_BUTTON_CLICK, 1.0f, 2.0f);

        p.removePotionEffect(PotionEffectType.DAMAGE_RESISTANCE);
        p.removePotionEffect(PotionEffectType.INCREASE_DAMAGE);
        p.removePotionEffect(PotionEffectType.WEAKNESS);
        p.removePotionEffect(PotionEffectType.SPEED);

        p.addPotionEffect(PotionEffectType.DAMAGE_RESISTANCE.createEffect(Integer.MAX_VALUE, 0), true);
        p.addPotionEffect(PotionEffectType.INCREASE_DAMAGE.createEffect(Integer.MAX_VALUE, 0), true);

        p.setMaxHealth(26);
        p.setHealth(26);
    }
}