refactor: common logic for getting controller of target object (#13038)

Mage/src/main/java/mage/target/targetpointer/TargetPointer.java

@@ -3,6 +3,7 @@ package mage.target.targetpointer;
 import mage.abilities.Ability;
 import mage.game.Game;
 import mage.game.permanent.Permanent;
+import mage.players.Player;
 import mage.target.Targets;
 import mage.util.Copyable;
 
@@ -46,6 +47,13 @@ public interface TargetPointer extends Serializable, Copyable<TargetPointer> {
      */
     Permanent getFirstTargetPermanentOrLKI(Game game, Ability source);
 
+    /**
+     * Finds the controller of the first target object or LKI,
+     * whether it is a permanent or spell.
+     * Returns null if not found.
+     */
+    Player getControllerOfFirstTargetOrLKI(Game game, Ability source);
+
     /**
      * Describes the appropriate subset of targets for ability text.
      */

Mage/src/main/java/mage/target/targetpointer/TargetPointerImpl.java

@@ -1,5 +1,11 @@
 package mage.target.targetpointer;
 
+import mage.abilities.Ability;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+import mage.game.stack.Spell;
+import mage.players.Player;
+
 import java.util.HashMap;
 import java.util.Map;
 
@@ -13,7 +19,7 @@ public abstract class TargetPointerImpl implements TargetPointer {
 
     private boolean initialized = false;
 
-    public TargetPointerImpl() {
+    protected TargetPointerImpl() {
         super();
     }
 
@@ -36,6 +42,21 @@ public abstract class TargetPointerImpl implements TargetPointer {
         this.initialized = true;
     }
 
+    @Override
+    public Player getControllerOfFirstTargetOrLKI(Game game, Ability source) {
+        Player targetController = null;
+        Permanent permanent = this.getFirstTargetPermanentOrLKI(game, source);
+        if (permanent != null) {
+            targetController = game.getPlayer(permanent.getControllerId());
+        } else {
+            Spell spell = game.getSpellOrLKIStack(this.getFirst(game, source));
+            if (spell != null) {
+                targetController = game.getPlayer(spell.getControllerId());
+            }
+        }
+        return targetController;
+    }
+
     @Override
     public String getData(String key) {
         if (data == null) {