#432 Create custom dependency injector

src/main/java/fr/xephi/authme/hooks/PluginHooks.java

@@ -11,6 +11,7 @@ import org.bukkit.entity.Player;
 import org.bukkit.plugin.Plugin;
 import org.bukkit.plugin.PluginManager;
 
+import javax.inject.Inject;
 import java.io.File;
 
 /**
@@ -28,6 +29,7 @@ public class PluginHooks {
      *
      * @param pluginManager The server's plugin manager
      */
+    @Inject
     public PluginHooks(PluginManager pluginManager) {
         this.pluginManager = pluginManager;
         tryHookToCombatPlus();
@@ -75,13 +77,23 @@ public class PluginHooks {
         return null;
     }
 
+    /**
+     * Checks whether the player is an NPC.
+     *
+     * @param player The player to process
+     * @return True if player is NPC, false otherwise
+     */
+    public boolean isNpc(Player player) {
+        return player.hasMetadata("NPC") || isNpcInCombatTagPlus(player);
+    }
+
     /**
      * Query the CombatTagPlus plugin whether the given player is an NPC.
      *
      * @param player The player to verify
      * @return True if the player is an NPC according to CombatTagPlus, false if not or if the plugin is unavailable
      */
-    public boolean isNpcInCombatTagPlus(Player player) {
+    private boolean isNpcInCombatTagPlus(Player player) {
         return combatTagPlus != null && combatTagPlus.getNpcPlayerHelper().isNpc(player);
     }