From e68029d4447d3c0a6f9f5e3be09f18fe0c9e716d Mon Sep 17 00:00:00 2001
From: Kiran Hart <kiran.hart@live.com>
Date: Sat, 19 Mar 2022 00:15:12 -0400
Subject: [PATCH] patch for duplication bug related to purchasing specific
 quantities of items

Took 4 minutes
---
 .../ca/tweetzy/auctionhouse/database/DataManager.java    | 5 +++--
 .../guis/confirmation/GUIConfirmPurchase.java            | 9 ++++++---
 2 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/src/main/java/ca/tweetzy/auctionhouse/database/DataManager.java b/src/main/java/ca/tweetzy/auctionhouse/database/DataManager.java
index c04e49b..58f1033 100644
--- a/src/main/java/ca/tweetzy/auctionhouse/database/DataManager.java
+++ b/src/main/java/ca/tweetzy/auctionhouse/database/DataManager.java
@@ -414,7 +414,7 @@ public class DataManager extends DataManagerAbstract {
 			connection.setAutoCommit(false);
 			SQLException err = null;
 
-			PreparedStatement statement = connection.prepareStatement("UPDATE " + this.getTablePrefix() + "auctions SET owner = ?, owner_name = ?, highest_bidder = ?, highest_bidder_name = ?, base_price = ?, bid_start_price = ?, bid_increment_price = ?, current_price = ?, expires_at = ?, expired = ? WHERE id = ?");
+			PreparedStatement statement = connection.prepareStatement("UPDATE " + this.getTablePrefix() + "auctions SET owner = ?, owner_name = ?, highest_bidder = ?, highest_bidder_name = ?, base_price = ?, bid_start_price = ?, bid_increment_price = ?, current_price = ?, expires_at = ?, expired = ?, item = ? WHERE id = ?");
 			for (AuctionedItem item : items) {
 				try {
 					statement.setString(1, item.getOwner().toString());
@@ -427,7 +427,8 @@ public class DataManager extends DataManagerAbstract {
 					statement.setDouble(8, item.getCurrentPrice());
 					statement.setLong(9, item.getExpiresAt());
 					statement.setBoolean(10, item.isExpired());
-					statement.setString(11, item.getId().toString());
+					statement.setString(11, AuctionAPI.encodeItem(item.getItem()));
+					statement.setString(12, item.getId().toString());
 					statement.addBatch();
 				} catch (SQLException e) {
 					err = e;
diff --git a/src/main/java/ca/tweetzy/auctionhouse/guis/confirmation/GUIConfirmPurchase.java b/src/main/java/ca/tweetzy/auctionhouse/guis/confirmation/GUIConfirmPurchase.java
index 98be31e..de0284f 100644
--- a/src/main/java/ca/tweetzy/auctionhouse/guis/confirmation/GUIConfirmPurchase.java
+++ b/src/main/java/ca/tweetzy/auctionhouse/guis/confirmation/GUIConfirmPurchase.java
@@ -99,6 +99,7 @@ public class GUIConfirmPurchase extends Gui {
 		setActionForRange(this.buyingSpecificQuantity ? 14 : 5, this.buyingSpecificQuantity ? 17 : 8, ClickType.LEFT, e -> {
 			e.gui.close();
 		});
+
 		setActionForRange(this.buyingSpecificQuantity ? 9 : 0, this.buyingSpecificQuantity ? 12 : 3, ClickType.LEFT, e -> {
 			// Re-select the item to ensure that it's available
 			try {
@@ -134,17 +135,19 @@ public class GUIConfirmPurchase extends Gui {
 				}
 
 				if (this.buyingSpecificQuantity) {
-					ItemStack item = auctionItem.getItem();
+					// the original item stack
+					ItemStack item = auctionItem.getItem().clone();
+					ItemStack toGive = auctionItem.getItem().clone();
 
 					if (item.getAmount() - this.purchaseQuantity >= 1) {
 						item.setAmount(item.getAmount() - this.purchaseQuantity);
+						toGive.setAmount(this.purchaseQuantity);
 
 						if (!located.isInfinite()) {
 							located.setItem(item);
 							located.setBasePrice(Settings.ROUND_ALL_PRICES.getBoolean() ? Math.round(located.getBasePrice() - buyNowPrice) : located.getBasePrice() - buyNowPrice);
 						}
 
-						item.setAmount(this.purchaseQuantity);
 						transferFunds(e.player, buyNowPrice);
 					} else {
 						transferFunds(e.player, buyNowPrice);
@@ -152,7 +155,7 @@ public class GUIConfirmPurchase extends Gui {
 							AuctionHouse.getInstance().getAuctionItemManager().sendToGarbage(located);
 					}
 
-					PlayerUtils.giveItem(e.player, item);
+					PlayerUtils.giveItem(e.player, toGive);
 					sendMessages(e, located, true, buyNowPrice);
 
 				} else {