Add openInventory method to API

src/main/java/fr/xephi/authme/api/v3/AuthMeApi.java

@@ -15,6 +15,8 @@ import fr.xephi.authme.util.PlayerUtils;
 import org.bukkit.Bukkit;
 import org.bukkit.Location;
 import org.bukkit.entity.Player;
+import org.bukkit.inventory.Inventory;
+import org.bukkit.inventory.InventoryView;
 
 import javax.inject.Inject;
 import java.time.Instant;
@@ -24,6 +26,8 @@ import java.util.List;
 import java.util.Locale;
 import java.util.Optional;
 
+import static fr.xephi.authme.listener.PlayerListener.PENDING_INVENTORIES;
+
 /**
  * The current API of AuthMe.
  *
@@ -32,6 +36,7 @@ import java.util.Optional;
  * AuthMeApi authmeApi = AuthMeApi.getInstance();
  * </code>
  */
+@SuppressWarnings("unused")
 public class AuthMeApi {
 
     private static AuthMeApi singleton;
@@ -256,6 +261,18 @@ public class AuthMeApi {
         return dataSource.saveAuth(auth);
     }
 
+    /**
+     * Open an inventory for the given player at any time.
+     *
+     * @param player The player to open the inventory for
+     * @param inventory The inventory to open
+     * @return The inventory view
+     */
+    public InventoryView openInventory(Player player, Inventory inventory) {
+        PENDING_INVENTORIES.add(inventory);
+        return player.openInventory(inventory);
+    }
+
     /**
      * Force a player to login, i.e. the player is logged in without needing his password.
      *

src/main/java/fr/xephi/authme/listener/PlayerListener.java

@@ -50,9 +50,12 @@ import org.bukkit.event.player.PlayerMoveEvent;
 import org.bukkit.event.player.PlayerQuitEvent;
 import org.bukkit.event.player.PlayerRespawnEvent;
 import org.bukkit.event.player.PlayerShearEntityEvent;
+import org.bukkit.inventory.Inventory;
 import org.bukkit.inventory.InventoryView;
 
 import javax.inject.Inject;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Locale;
 import java.util.Set;
 
@@ -93,6 +96,7 @@ public class PlayerListener implements Listener {
     @Inject
     private QuickCommandsProtectionManager quickCommandsProtectionManager;
 
+    public static List<Inventory> PENDING_INVENTORIES = new ArrayList<>();
 
     // Lowest priority to apply fast protection checks
     @EventHandler(priority = EventPriority.LOWEST)
@@ -489,6 +493,17 @@ public class PlayerListener implements Listener {
         }
     }
 
+    private boolean isInventoryOpenedByApi(Inventory inventory) {
+        if (inventory == null) {
+            return false;
+        }
+        if (PENDING_INVENTORIES.contains(inventory)) {
+            PENDING_INVENTORIES.remove(inventory);
+            return true;
+        } else {
+            return false;
+        }
+    }
     @SuppressWarnings("all")
     private boolean isInventoryWhitelisted(InventoryView inventory) {
         if (inventory == null) {
@@ -515,7 +530,8 @@ public class PlayerListener implements Listener {
     public void onPlayerInventoryOpen(InventoryOpenEvent event) {
         final HumanEntity player = event.getPlayer();
         if (listenerService.shouldCancelEvent(player)
-            && !isInventoryWhitelisted(event.getView())) {
+            && !isInventoryWhitelisted(event.getView())
+            && !isInventoryOpenedByApi(event.getInventory())) {
             event.setCancelled(true);
 
             /*

src/main/java/fr/xephi/authme/service/BukkitService.java

@@ -380,7 +380,11 @@ public class BukkitService implements SettingsDependent {
      * @param bytes the message
      */
     public void sendVelocityMessage(Player player, byte[] bytes) {
-        player.sendPluginMessage(authMe, "authmevelocity:main", bytes);
+        if (player != null) {
+            player.sendPluginMessage(authMe, "authmevelocity:main", bytes);
+        } else {
+            Bukkit.getServer().sendPluginMessage(authMe, "authmevelocity:main", bytes);
+        }
     }
 
 

src/main/java/fr/xephi/authme/util/message/MiniMessageUtils.java

@@ -1,5 +1,6 @@
 package fr.xephi.authme.util.message;
 
+import fr.xephi.authme.util.Utils;
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.minimessage.MiniMessage;
 import net.kyori.adventure.text.serializer.bungeecord.BungeeComponentSerializer;
@@ -8,6 +9,15 @@ import net.md_5.bungee.api.chat.BaseComponent;
 
 public class MiniMessageUtils {
     private static final MiniMessage miniMessage = MiniMessage.miniMessage();
+    private static final BungeeComponentSerializer bungeeSerializer;
+
+    static {
+        if (Utils.MAJOR_VERSION >= 16) {
+            bungeeSerializer = BungeeComponentSerializer.get();
+        } else {
+            bungeeSerializer = BungeeComponentSerializer.legacy();
+        }
+    }
 
     /**
      * Parse a MiniMessage string into a legacy string.
@@ -28,7 +38,7 @@ public class MiniMessageUtils {
      */
     public static BaseComponent[] parseMiniMessageToBaseComponent(String message) {
         Component component = miniMessage.deserialize(message);
-        return BungeeComponentSerializer.legacy().serialize(component);
+        return bungeeSerializer.serialize(component);
     }
 
     private MiniMessageUtils() {