From 46672c44f1b2d07e33ae3b833248b1aa4208461d Mon Sep 17 00:00:00 2001
From: GeorgH93 <git@georgh93.eu>
Date: Sun, 26 Jan 2020 00:17:20 +0100
Subject: [PATCH] Implement migration for backpacks with more than 6 rows
 Minecraft 1.14 no longer allows more than 6 rows. The plugin will try to put
 all the items within empty space in the backpack, if there are still more
 items than can fit within the 6 rows and the owner is online the extra items
 will drop to the ground. Start work on #64

---
 pom.xml                                       |  2 +-
 .../Minepacks/Bukkit/Backpack.java            | 32 ++++++++++++++++++-
 .../Minepacks/Bukkit/Database/Config.java     |  1 +
 3 files changed, 33 insertions(+), 2 deletions(-)

diff --git a/pom.xml b/pom.xml
index 0c9d0d5..bb85c74 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>at.pcgamingfreaks</groupId>
 	<artifactId>Minepacks</artifactId>
-	<version>2.1.3</version>
+	<version>2.1.4-SNAPSHOT</version>
 
 	<scm>
 		<connection>scm:git:git@github.com:GeorgH93/Minepacks.git</connection>
diff --git a/src/at/pcgamingfreaks/Minepacks/Bukkit/Backpack.java b/src/at/pcgamingfreaks/Minepacks/Bukkit/Backpack.java
index bb114e3..77455be 100644
--- a/src/at/pcgamingfreaks/Minepacks/Bukkit/Backpack.java
+++ b/src/at/pcgamingfreaks/Minepacks/Bukkit/Backpack.java
@@ -1,5 +1,5 @@
 /*
- *   Copyright (C) 2019 GeorgH93
+ *   Copyright (C) 2020 GeorgH93
  *
  *   This program is free software: you can redistribute it and/or modify
  *   it under the terms of the GNU General Public License as published by
@@ -23,6 +23,7 @@
 
 import org.bukkit.Bukkit;
 import org.bukkit.Location;
+import org.bukkit.Material;
 import org.bukkit.OfflinePlayer;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.Inventory;
@@ -90,6 +91,11 @@ public Backpack(OfflinePlayer owner, int size)
 
 	public Backpack(OfflinePlayer owner, int size, int ID)
 	{
+		if(MCVersion.isNewerOrEqualThan(MCVersion.MC_1_14))
+		{
+			size = Math.min(size, 54);
+			Minepacks.getInstance().getLogger().warning("Backpacks with more than 6 rows are no longer supported on Minecraft 1.14 and up!");
+		}
 		this.owner = owner;
 		titleOther = StringUtils.limitLength(String.format(titleOtherFormat, owner.getName()), 32);
 		bp = Bukkit.createInventory(this, size, titleOther);
@@ -110,6 +116,30 @@ public Backpack(OfflinePlayer owner, int size, int ID)
 	public Backpack(OfflinePlayer owner, ItemStack[] backpack, int ID)
 	{
 		this(owner, backpack.length, ID);
+		if(MCVersion.isNewerOrEqualThan(MCVersion.MC_1_14) && backpack.length > 54)
+		{ // Try to optimize space usage to compress items into only 6 rows
+			ItemStack[] dbStack = backpack;
+			backpack = new ItemStack[54];
+			int filled = 0;
+			for(ItemStack stack : dbStack)
+			{
+				if(stack == null || stack.getType() == Material.AIR) continue;
+				if(filled == 54)
+				{
+					Minepacks.getInstance().getLogger().warning(owner.getName() + "'s backpack has to many items.");
+					if(owner.isOnline())
+					{
+						owner.getPlayer().getWorld().dropItemNaturally(owner.getPlayer().getLocation(), stack);
+						//Owner is online!
+					}
+					else throw new RuntimeException("Backpack to big for MC 1.14 and up!");
+				}
+				else
+				{
+					backpack[filled++] = stack;
+				}
+			}
+		}
 		bp.setContents(backpack);
 	}
 	
diff --git a/src/at/pcgamingfreaks/Minepacks/Bukkit/Database/Config.java b/src/at/pcgamingfreaks/Minepacks/Bukkit/Database/Config.java
index f0520d9..450d86c 100644
--- a/src/at/pcgamingfreaks/Minepacks/Bukkit/Database/Config.java
+++ b/src/at/pcgamingfreaks/Minepacks/Bukkit/Database/Config.java
@@ -167,6 +167,7 @@ public int getBackpackMaxSize()
 	{
 		int size = getConfigE().getInt("MaxSize", 6);
 		if(MCVersion.isNewerOrEqualThan(MCVersion.MC_1_14)) size = Math.min(6, size);
+		if(size > 6) logger.warning("Backpacks with more than 6 rows will not work on MC 1.14");
 		return Math.max(1, size);
 	}