Switch to configuration based events on Paper (#6248)

Moves away from PlayerLoginEvent on Paper and makes use of the new
configuration state to load user/locale data during configuration phase.
Not only does this ensure all I/O is done async before the player even
joins but also finally allows us to actually set the join message in the
PlayerJoinEvent.

This also fixes #5796 and closes #5848

Author: JRoy

Essentials/src/main/java/com/earth2me/essentials/EssentialsPlayerListener.java

@@ -1098,7 +1098,10 @@ public void sendTl(String tlKey, Object... args) {
     public String playerTl(String tlKey, Object... args) {
         if (ess.getSettings().isPerPlayerLocale()) {
             final PlayerLocaleProvider provider = ess.provider(PlayerLocaleProvider.class);
-            return tlLocale(getPlayerLocale(provider.getLocale(base)), tlKey, args);
+            final Locale locale = base != null ? getPlayerLocale(provider.getLocale(base)) : playerLocale;
+            if (locale != null) {
+                return tlLocale(locale, tlKey, args);
+            }
         }
         return tlLiteral(tlKey, args);
     }

Essentials/src/main/java/com/earth2me/essentials/User.java

@@ -7,6 +7,7 @@
 import org.bukkit.entity.Player;
 
 import java.util.List;
+import java.util.UUID;
 import java.util.function.Function;
 import java.util.function.Supplier;
 
@@ -30,6 +31,8 @@ public interface IPermissionsHandler {
     // Does not check for * permissions
     boolean isPermissionSet(Player base, String node);
 
+    boolean isOfflinePermissionSet(UUID uuid, String node);
+
     TriState isPermissionSetExact(Player base, String node);
 
     String getPrefix(Player base);

Essentials/src/main/java/com/earth2me/essentials/perm/IPermissionsHandler.java

@@ -18,6 +18,7 @@
 import java.util.Collections;
 import java.util.List;
 import java.util.Optional;
+import java.util.UUID;
 import java.util.function.Function;
 import java.util.function.Supplier;
 import java.util.logging.Level;
@@ -106,6 +107,11 @@ public boolean isPermissionSet(final Player base, final String node) {
         return handler.isPermissionSet(base, node);
     }
 
+    @Override
+    public boolean isOfflinePermissionSet(UUID uuid, String node) {
+        return handler.isOfflinePermissionSet(uuid, node);
+    }
+
     @Override
     public TriState isPermissionSetExact(Player base, String node) {
         return handler.isPermissionSetExact(base, node);

Essentials/src/main/java/com/earth2me/essentials/perm/PermissionsHandler.java

@@ -8,6 +8,7 @@
 import net.luckperms.api.context.ContextSet;
 import net.luckperms.api.context.ImmutableContextSet;
 import net.luckperms.api.model.group.Group;
+import net.luckperms.api.query.QueryOptions;
 import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
 import org.bukkit.plugin.RegisteredServiceProvider;
@@ -16,6 +17,7 @@
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
+import java.util.UUID;
 import java.util.function.Function;
 import java.util.function.Supplier;
 
@@ -58,6 +60,17 @@ public List<String> getGroups() {
         return groups;
     }
 
+    @Override
+    public boolean isOfflinePermissionSet(UUID uuid, String node) {
+        final net.luckperms.api.model.user.User user = this.luckPerms.getUserManager().loadUser(uuid).join();
+        if (user == null) {
+            return false;
+        }
+
+        final QueryOptions options = luckPerms.getContextManager().getStaticQueryOptions();
+        return user.getCachedData().getPermissionData(options).checkPermission(node).asBoolean();
+    }
+
     @Override
     public boolean tryProvider(Essentials ess) {
         final RegisteredServiceProvider<LuckPerms> provider = Bukkit.getServicesManager().getRegistration(LuckPerms.class);

Essentials/src/main/java/com/earth2me/essentials/perm/impl/LuckPermsHandler.java

@@ -13,6 +13,7 @@
 
 import java.util.Arrays;
 import java.util.List;
+import java.util.UUID;
 import java.util.function.Function;
 import java.util.function.Supplier;
 
@@ -121,6 +122,11 @@ public boolean isPermissionSet(final Player base, final String node) {
         return base.isPermissionSet(node);
     }
 
+    @Override
+    public boolean isOfflinePermissionSet(UUID uuid, String node) {
+        return false;
+    }
+
     @Override
     public TriState isPermissionSetExact(Player base, String node) {
         for (final PermissionAttachmentInfo perm : base.getEffectivePermissions()) {

Essentials/src/main/java/com/earth2me/essentials/perm/impl/SuperpermsHandler.java

@@ -20,6 +20,13 @@ public interface IUserMap {
      */
     long getCachedCount();
 
+    /**
+     * Checks if a user is cached.
+     * @param uuid the UUID of the user to check.
+     * @return true if the user is cached, false otherwise.
+     */
+    boolean isCached(final UUID uuid);
+
     /**
      * Gets the amount of users stored by Essentials.
      * @return the amount of users stored by Essentials.

Essentials/src/main/java/com/earth2me/essentials/userstorage/IUserMap.java

@@ -64,6 +64,21 @@ public long getCachedCount() {
         return userCache.size();
     }
 
+    @Override
+    public boolean isCached(final UUID uuid) {
+        if (uuid == null) {
+            return false;
+        }
+        try {
+            return userCache.getIfPresent(uuid) != null;
+        } catch (Exception e) {
+            if (ess.getSettings().isDebug()) {
+                ess.getLogger().log(Level.WARNING, "Exception while checking if user is cached for " + uuid, e);
+            }
+            return false;
+        }
+    }
+
     @Override
     public int getUserCount() {
         return uuidCache.getCacheSize();