refactor: common class DrawCardTargetControllerEffect

tests for Ob Nixilis the Hate-Twisted; Dream Fracture

resolves #12292

Mage/src/main/java/mage/abilities/effects/common/DrawCardTargetControllerEffect.java

@@ -0,0 +1,61 @@
+package mage.abilities.effects.common;
+
+import mage.abilities.Ability;
+import mage.abilities.dynamicvalue.DynamicValue;
+import mage.abilities.dynamicvalue.common.StaticValue;
+import mage.abilities.effects.OneShotEffect;
+import mage.constants.Outcome;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+import mage.game.stack.Spell;
+import mage.players.Player;
+import mage.util.CardUtil;
+
+/**
+ * @author xenohedron
+ */
+public class DrawCardTargetControllerEffect extends OneShotEffect {
+
+    protected DynamicValue amount;
+
+    public DrawCardTargetControllerEffect(int amount) {
+        this(StaticValue.get(amount));
+        this.staticText = "its controller draws " + CardUtil.numberToText(amount, "a")
+                + (amount == 1 ? " card" : " cards");
+    }
+
+    public DrawCardTargetControllerEffect(DynamicValue amount) {
+        super(Outcome.DrawCard);
+        this.amount = amount;
+    }
+
+    protected DrawCardTargetControllerEffect(final DrawCardTargetControllerEffect effect) {
+        super(effect);
+        amount = effect.amount.copy();
+    }
+
+    @Override
+    public DrawCardTargetControllerEffect copy() {
+        return new DrawCardTargetControllerEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player targetController = null;
+        Permanent permanent = getTargetPointer().getFirstTargetPermanentOrLKI(game, source);
+        if (permanent != null) {
+            targetController = game.getPlayer(permanent.getControllerId());
+        } else {
+            Spell spell = game.getSpellOrLKIStack(getTargetPointer().getFirst(game, source));
+            if (spell != null) {
+                targetController = game.getPlayer(spell.getControllerId());
+            }
+        }
+        if (targetController != null) {
+            targetController.drawCards(amount.calculate(game, source, this), source, game);
+            return true;
+        }
+        return false;
+    }
+
+}