From 9e931d8f67acf7dd52c07c52967e54a8ce685e81 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Thu, 22 Mar 2018 01:40:24 -0400
Subject: [PATCH] getPlayerUniqueId API

Gets the unique ID of the player currently known as the specified player name
In Offline Mode, will return an Offline UUID

This is a more performant way to obtain a UUID for a name than loading an OfflinePlayer

diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index 6095948e8..80702f6f6 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -1346,6 +1346,26 @@ public final class CraftServer implements Server {
         return recipients.size();
     }
 
+    // Paper start
+    @Nullable
+    public UUID getPlayerUniqueId(String name) {
+        Player player = Bukkit.getPlayerExact(name);
+        if (player != null) {
+            return player.getUniqueId();
+        }
+        GameProfile profile;
+        // Only fetch an online UUID in online mode
+        if (MinecraftServer.getServer().getOnlineMode()
+                || (org.spigotmc.SpigotConfig.bungee && com.destroystokyo.paper.PaperConfig.bungeeOnlineMode)) {
+            profile = console.getUserCache().getProfile( name );
+        } else {
+            // Make an OfflinePlayer using an offline mode UUID since the name has no profile
+            profile = new GameProfile(UUID.nameUUIDFromBytes(("OfflinePlayer:" + name).getBytes(Charsets.UTF_8)), name);
+        }
+        return profile != null ? profile.getId() : null;
+    }
+    // Paper end
+
     @Override
     @Deprecated
     public OfflinePlayer getOfflinePlayer(String name) {
-- 
2.18.0