package net.minecraft.world.item.trading;

import java.util.OptionalInt;
import net.minecraft.network.chat.Component;
import net.minecraft.sounds.SoundEvent;
import net.minecraft.world.SimpleMenuProvider;
import net.minecraft.world.entity.player.Player;
import net.minecraft.world.inventory.MerchantMenu;
import net.minecraft.world.item.ItemStack;
import org.jspecify.annotations.Nullable;

public interface Merchant {
	void setTradingPlayer(@Nullable Player player);

	@Nullable
	Player getTradingPlayer();

	MerchantOffers getOffers();

	void overrideOffers(MerchantOffers offers);

	void notifyTrade(MerchantOffer offer);

	void notifyTradeUpdated(ItemStack itemStack);

	int getVillagerXp();

	void overrideXp(final int xp);

	boolean showProgressBar();

	SoundEvent getNotifyTradeSound();

	default boolean canRestock() {
		return false;
	}

	default void openTradingScreen(final Player player, final Component title, final int level) {
		OptionalInt containerId = player.openMenu(new SimpleMenuProvider((id, inventory, p) -> new MerchantMenu(id, inventory, this), title));
		if (containerId.isPresent()) {
			MerchantOffers offers = this.getOffers();
			if (!offers.isEmpty()) {
				player.sendMerchantOffers(containerId.getAsInt(), offers, level, this.getVillagerXp(), this.showProgressBar(), this.canRestock());
			}
		}
	}

	boolean isClientSide();

	boolean stillValid(Player player);
}