bazaarflux/src/main/java/me/lethunderhawk/economy/command/EcoCommand.java

package me.lethunderhawk.economy.command;

import me.lethunderhawk.economy.EconomyModule;
import me.lethunderhawk.economy.api.EconomyAPI;
import me.lethunderhawk.economy.shop.ShopGUI;
import me.lethunderhawk.fluxapi.util.command.CommandNode;
import me.lethunderhawk.fluxapi.util.command.CustomCommand;
import me.lethunderhawk.fluxapi.util.gui.InventoryManager;
import net.kyori.adventure.text.Component;
import net.kyori.adventure.text.format.NamedTextColor;
import org.bukkit.Bukkit;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;

import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;

public class EcoCommand extends CustomCommand {
    private static final List<String> AMOUNTS = List.of("1", "5", "10", "50", "100", "500", "1000");
    private final EconomyModule module;

    public EcoCommand(EconomyModule module) {
        super(module);
        this.module = module;
    }

    @Override
    public CommandNode getRootCommand(){
       return new CommandNode("eco", "Main economy command", null);
    }

    @Override
    public void createCommands() {
        CommandNode set = registerSubCommand("set", "Set the balance of a player", this::setEco);
        set.setTabCompleter(this::completeAllEcoCommands);

        CommandNode add = registerSubCommand("add", "Add any amount to the balance of a player", this::addEco);
        add.setTabCompleter(this::completeAllEcoCommands);

        CommandNode remove = registerSubCommand("remove", "Remove any amount of the balance of a player", this::removeEco);
        remove.setTabCompleter(this::completeAllEcoCommands);

        CommandNode get = registerSubCommand("get", "Get the balance of a player", this::getBalance);
        get.setTabCompleter(this::completePlayers);

        //CommandNode shop = registerSubCommand("shop", "Open the main Shop", this::openShop);
    }

    private void openShop(CommandSender sender, String[] strings) {
        if(!(sender instanceof Player p)) return;
        InventoryManager.openFor(p, new ShopGUI(p));
    }

    private List<String> completePlayers(CommandSender sender, String[] args){
        String partial = args[1].toLowerCase();
        return Bukkit.getOnlinePlayers().stream()
                .map(Player::getName)
                .filter(name -> name.toLowerCase().startsWith(partial))
                .collect(Collectors.toList());
    }

    /**
     * @param args The full arguments list
     * @return The completion in following format: /eco [action] [List of players] [amount]
     */
    private List<String> completeAllEcoCommands(CommandSender sender, String[] args){
        if (args.length == 2) {
            return completePlayers(sender, args);
        }

        // /eco <action> <player> <amount>
        if (args.length == 3) {
            String partial = args[2].toLowerCase();
            return AMOUNTS.stream()
                    .filter(s -> s.startsWith(partial))
                    .collect(Collectors.toList());
        }
        return Collections.emptyList();
    }

    private void getBalance(CommandSender commandSender, String[] strings) {
        Player target = Bukkit.getPlayer(strings[0]);

        if (target == null) {
            module.sendText(commandSender, Component.text("Spieler nicht gefunden.",  NamedTextColor.RED));
        }else{
            module.sendText(commandSender, Component.text("Spieler " + target.getName() + " hat " + getAPI().getMoney(target.getUniqueId()),  NamedTextColor.GRAY));
        }
    }

    private void removeEco(CommandSender commandSender, String[] strings) {
        if(!commandSender.isOp()) return;
        Player target = Bukkit.getPlayer(strings[0]);
        if (target == null) {
            module.sendText(commandSender, Component.text("Spieler nicht gefunden.",  NamedTextColor.RED));
        }else{
            getAPI().removeMoney(target.getUniqueId(), Double.parseDouble(strings[1]));
        }
    }

    private void addEco(CommandSender commandSender, String[] strings) {
        if(!commandSender.isOp()) return;
        Player target = Bukkit.getPlayer(strings[0]);
        if (target == null) {
            module.sendText(commandSender, Component.text("Spieler nicht gefunden.",  NamedTextColor.RED));
        }else{
            getAPI().addMoney(target.getUniqueId(), Double.parseDouble(strings[1]));
        }
    }

    private void setEco(CommandSender commandSender, String[] strings) {
        if(!commandSender.isOp()) return;
        Player target = Bukkit.getPlayer(strings[0]);
        if (target == null) {
            module.sendText(commandSender, Component.text("Spieler nicht gefunden.",  NamedTextColor.RED));
        }else{
            getAPI().setMoney(target.getUniqueId(), Double.parseDouble(strings[1]));
        }
    }
    private EconomyAPI getAPI(){
        return module.getEconomyAPI();
    }


}