ChestShop-3/src/main/java/com/Acrobot/ChestShop/Listeners/PostTransaction/TransactionMessageSender.java

package com.Acrobot.ChestShop.Listeners.PostTransaction;

import com.Acrobot.Breeze.Utils.InventoryUtil;
import com.Acrobot.Breeze.Utils.MaterialUtil;
import com.Acrobot.Breeze.Utils.StringUtil;
import com.Acrobot.ChestShop.Commands.Toggle;
import com.Acrobot.ChestShop.Configuration.Messages;
import com.Acrobot.ChestShop.Configuration.Properties;
import com.Acrobot.ChestShop.Economy.Economy;
import com.Acrobot.ChestShop.Events.TransactionEvent;
import com.Acrobot.ChestShop.UUIDs.NameManager;
import org.bukkit.Bukkit;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.EventPriority;
import org.bukkit.event.Listener;
import org.bukkit.inventory.ItemStack;

import java.util.ArrayList;
import java.util.List;
import java.util.UUID;

/**
 * @author Acrobot
 */
public class TransactionMessageSender implements Listener {
    @EventHandler(priority = EventPriority.MONITOR)
    public static void onTransaction(TransactionEvent event) {
        if (event.getTransactionType() == TransactionEvent.TransactionType.BUY) {
            sendBuyMessage(event);
        } else {
            sendSellMessage(event);
        }
    }

    protected static void sendBuyMessage(TransactionEvent event) {
        String ownerName = event.getOwnerAccount().getName();

        Player player = event.getClient();

        if (Properties.SHOW_TRANSACTION_INFORMATION_CLIENT) {
            sendMessage(player, Messages.YOU_BOUGHT_FROM_SHOP, event, "owner", ownerName);
        }

        if (Properties.SHOW_TRANSACTION_INFORMATION_OWNER && !Toggle.isIgnoring(event.getOwnerAccount().getName())) {
            Player owner = Bukkit.getPlayer(event.getOwnerAccount().getUuid());
            if (owner != null) {
                sendMessage(player, Messages.SOMEBODY_BOUGHT_FROM_YOUR_SHOP, event, "buyer", player.getName());
            }
        }
    }
    
    protected static void sendSellMessage(TransactionEvent event) {
        String ownerName = event.getOwnerAccount().getName();

        Player player = event.getClient();

        if (Properties.SHOW_TRANSACTION_INFORMATION_CLIENT) {
            sendMessage(player, Messages.YOU_SOLD_TO_SHOP, event, "buyer", ownerName);
        }

        if (Properties.SHOW_TRANSACTION_INFORMATION_OWNER && !Toggle.isIgnoring(ownerName)) {
            Player owner = Bukkit.getPlayer(event.getOwnerAccount().getUuid());
            if (owner != null) {
                sendMessage(owner, Messages.SOMEBODY_SOLD_TO_YOUR_SHOP, event, "seller", player.getName());
            }
        }
    }
    
    private static void sendMessage(Player player, String rawMessage, TransactionEvent event, String... replacements) {
        String message = Messages.prefix(rawMessage)
                .replace("%price", Economy.formatBalance(event.getPrice()));
        
        for (int i = 0; i + 1 < replacements.length; i+=2) {
            message = message.replace("%" + replacements[i], replacements[i + 1]);
        }
        
        if (Properties.SHOWITEM_MESSAGE && MaterialUtil.Show.sendMessage(player, message, event.getStock())) {
            return;
        }
        player.sendMessage(message.replace("%item", parseItemInformation(event.getStock())));
    }

    private static String parseItemInformation(ItemStack[] items) {
        ItemStack[] stock = InventoryUtil.mergeSimilarStacks(items);

        List<String> itemText = new ArrayList<>();

        for (ItemStack item : stock) {
            itemText.add(item.getAmount() + " " + MaterialUtil.getName(item));
        }

        return StringUtil.joinArray(itemText);
    }
}