Trash

package be.alexisdepris.matouessentials.commands;

import org.bukkit.Material;
import org.bukkit.Sound;
import org.bukkit.SoundCategory;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.command.TabCompleter;
import org.bukkit.entity.Player;
import org.bukkit.inventory.ItemStack;
import org.bukkit.util.StringUtil;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

public class CommandTrash implements CommandExecutor, TabCompleter {

    private String error = "§7[§4Erreur§7] ";
    private String warn = "§7[§6Attention§7] ";
    private String success = "§7[§aSuccès§7] ";

    @Override
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {

        if (!(sender instanceof Player)) return true;

        final Player player = (Player) sender;

        if (player.hasPermission("matouessentials.trash")) {

            if (args.length == 0) {
                player.sendMessage(warn + "§eVeuillez vérifier la syntaxe de la commande !");
                player.sendMessage("§7/§etrash §7<§emainhand§7|§eoffhand§7|§eall§7>");
                return true;
            }

            if (args.length == 1) {
                if (args[0].equalsIgnoreCase("mainhand")) {
                    ItemStack mainHand = player.getInventory().getItemInMainHand();

                    if (mainHand.getType() == Material.AIR) {
                        player.sendMessage(warn + "§eIl n'y a aucun item dans votre main principal !");
                        return true;
                    }
                    trashMainHand(player);
                    playTrashSound(player);
                    player.sendMessage(success + "§2L'item se trouvant dans votre main principal a bien été détruit !");
                }

                if (args[0].equalsIgnoreCase("offhand")) {
                    ItemStack offHand = player.getInventory().getItemInOffHand();

                    if (offHand.getType() == Material.AIR) {
                        player.sendMessage(warn + "§eIl n'y a aucun item dans votre main secondaire");
                        return true;
                    }

                    trashOffHand(player);
                    playTrashSound(player);
                    player.sendMessage(success + "§2L'item se trouvant dans votre main secondaire a bien été détruit !");
                }

                if (args[0].equalsIgnoreCase("all")) {
                    ItemStack mainHand = player.getInventory().getItemInMainHand();
                    ItemStack offHand = player.getInventory().getItemInOffHand();

                    if (mainHand.getType() == Material.AIR && offHand.getType() == Material.AIR) {
                        player.sendMessage(warn + "§eAucun items se trouvent dans vos deux mains !");
                        return true;
                    }

                    if (mainHand.getType() == Material.AIR || offHand.getType() == Material.AIR) {
                        player.sendMessage(warn + "§eUne de vos deux mains n'a aucun item !");
                        return true;
                    }

                    trashAllHand(player);
                    playTrashSound(player);
                    player.sendMessage(success + "§2Les items se trouvant dans vos deux mains ont bien été détruit !");
                }
            }

        } else {
            player.sendMessage(error + "§cVous n'êtes pas autorisé à utiliser cette commande !");
        }

        return true;
    }

    @Override
    public List<String> onTabComplete(CommandSender sender, Command cmd, String label, String[] args) {
        if (args.length == 1) {
            return StringUtil.copyPartialMatches(args[0], Arrays.asList("mainhand", "offhand", "all"), new ArrayList<>());
        }
        return Collections.emptyList();
    }

    private void trashMainHand(Player player) {
        player.getInventory().setItemInMainHand(null);
    }

    private void trashOffHand(Player player) {
        player.getInventory().setItemInOffHand(null);
    }

    private void trashAllHand(Player player) {
        player.getInventory().setItemInMainHand(null);
        player.getInventory().setItemInOffHand(null);
    }

    private void playTrashSound(Player player) {
        player.playSound(player.getLocation(), Sound.ENTITY_GENERIC_BIG_FALL, SoundCategory.MASTER, 1.5F, 0.2F);
        player.playSound(player.getLocation(), Sound.BLOCK_ANVIL_PLACE, SoundCategory.MASTER, 1.2F, 0.5F);
    }

}