Paper/patches/server/0282-Replace-OfflinePlayer-getLastPlayed.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Zach Brown <zach@zachbr.io>
Date: Wed, 2 Jan 2019 00:35:43 -0600
Subject: [PATCH] Replace OfflinePlayer#getLastPlayed

Currently OfflinePlayer#getLastPlayed could more accurately be described
as "OfflinePlayer#getLastTimeTheirDataWasSaved".

The API doc says it should return the last time the server "witnessed"
the player, whilst also saying it should return the last time they
logged in. The current implementation does neither.

Given this interesting contradiction in the API documentation and the
current defacto implementation, I've elected to deprecate (with no
intent to remove) and replace it with two new methods, clearly named and
documented as to their purpose.

diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
index 4b163b9f6f6abc89ed62291e8df80d987bdc46e3..0afa8c7c826bb01f8a1139ced76fa599d205e045 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -248,6 +248,7 @@ public class ServerPlayer extends Player {
     private int containerCounter;
     public boolean wonGame;
     private int containerUpdateDelay; // Paper
+    public long loginTime; // Paper - Replace OfflinePlayer#getLastPlayed
     // Paper start - cancellable death event
     public boolean queueHealthUpdatePacket = false;
     public net.minecraft.network.protocol.game.ClientboundSetHealthPacket queuedHealthUpdatePacket;
diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
index af26a2b45cba7083f3bd7ddbbfde5bcfb30f1907..a1ab652fe6a838f8506c735815894ca16307264c 100644
--- a/src/main/java/net/minecraft/server/players/PlayerList.java
+++ b/src/main/java/net/minecraft/server/players/PlayerList.java
@@ -179,6 +179,7 @@ public abstract class PlayerList {
 
     public void placeNewPlayer(Connection connection, ServerPlayer player, CommonListenerCookie clientData) {
         player.isRealPlayer = true; // Paper
+        player.loginTime = System.currentTimeMillis(); // Paper - Replace OfflinePlayer#getLastPlayed
         GameProfile gameprofile = player.getGameProfile();
         GameProfileCache usercache = this.server.getProfileCache();
         String s;
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftOfflinePlayer.java b/src/main/java/org/bukkit/craftbukkit/CraftOfflinePlayer.java
index e8490a58dd4d9bc39a5bb2f9fc109526e031b971..5f590575f95eff8bf0cdcafde7dee0e3c7fc30ad 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftOfflinePlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftOfflinePlayer.java
@@ -261,6 +261,61 @@ public class CraftOfflinePlayer implements OfflinePlayer, ConfigurationSerializa
         return this.getData() != null;
     }
 
+    // Paper start
+    @Override
+    public long getLastLogin() {
+        Player player = getPlayer();
+        if (player != null) return player.getLastLogin();
+
+        CompoundTag data = getPaperData();
+
+        if (data != null) {
+            if (data.contains("LastLogin")) {
+                return data.getLong("LastLogin");
+            } else {
+                // if the player file cannot provide accurate data, this is probably the closest we can approximate
+                File file = getDataFile();
+                return file.lastModified();
+            }
+        } else {
+            return 0;
+        }
+    }
+
+    @Override
+    public long getLastSeen() {
+        Player player = getPlayer();
+        if (player != null) return player.getLastSeen();
+
+        CompoundTag data = getPaperData();
+
+        if (data != null) {
+            if (data.contains("LastSeen")) {
+                return data.getLong("LastSeen");
+            } else {
+                // if the player file cannot provide accurate data, this is probably the closest we can approximate
+                File file = getDataFile();
+                return file.lastModified();
+            }
+        } else {
+            return 0;
+        }
+    }
+
+    private CompoundTag getPaperData() {
+        CompoundTag result = getData();
+
+        if (result != null) {
+            if (!result.contains("Paper")) {
+                result.put("Paper", new CompoundTag());
+            }
+            result = result.getCompound("Paper");
+        }
+
+        return result;
+    }
+    // Paper end
+
     @Override
     public Location getLastDeathLocation() {
         if (this.getData().contains("LastDeathLocation", 10)) {
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index 07076f9216fe904fe0f1f018b7e3862d5aab1398..f7ec6a6822608c51129c4bb3247179cce16a39c2 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -191,6 +191,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
     private BorderChangeListener clientWorldBorderListener = this.createWorldBorderListener();
     public org.bukkit.event.player.PlayerResourcePackStatusEvent.Status resourcePackStatus; // Paper - more resource pack API
     private static final boolean DISABLE_CHANNEL_LIMIT = System.getProperty("paper.disableChannelLimit") != null; // Paper - add a flag to disable the channel limit
+    private long lastSaveTime; // Paper - getLastPlayed replacement API
 
     public CraftPlayer(CraftServer server, ServerPlayer entity) {
         super(server, entity);
@@ -1953,6 +1954,18 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
         this.firstPlayed = firstPlayed;
     }
 
+    // Paper start - getLastPlayed replacement API
+    @Override
+    public long getLastLogin() {
+        return this.getHandle().loginTime;
+    }
+
+    @Override
+    public long getLastSeen() {
+        return this.isOnline() ? System.currentTimeMillis() : this.lastSaveTime;
+    }
+    // Paper end - getLastPlayed replacement API
+
     public void readExtraData(CompoundTag nbttagcompound) {
         this.hasPlayedBefore = true;
         if (nbttagcompound.contains("bukkit")) {
@@ -1975,6 +1988,8 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
     }
 
     public void setExtraData(CompoundTag nbttagcompound) {
+        this.lastSaveTime = System.currentTimeMillis(); // Paper
+
         if (!nbttagcompound.contains("bukkit")) {
             nbttagcompound.put("bukkit", new CompoundTag());
         }
@@ -1989,6 +2004,16 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
         data.putLong("firstPlayed", this.getFirstPlayed());
         data.putLong("lastPlayed", System.currentTimeMillis());
         data.putString("lastKnownName", handle.getScoreboardName());
+
+        // Paper start - persist for use in offline save data
+        if (!nbttagcompound.contains("Paper")) {
+            nbttagcompound.put("Paper", new CompoundTag());
+        }
+
+        CompoundTag paper = nbttagcompound.getCompound("Paper");
+        paper.putLong("LastLogin", handle.loginTime);
+        paper.putLong("LastSeen", System.currentTimeMillis());
+        // Paper end
     }
 
     @Override