1

src/main/java/core/basesyntax/DiscountStrategy

@@ -0,0 +1,23 @@
+package core.basesyntax;
+
+import core.basesyntax.strategy.DiscountService;
+import core.basesyntax.strategy.impl.BlackFridayDiscountService;
+import core.basesyntax.strategy.impl.DefaultDiscountService;
+import core.basesyntax.strategy.impl.NewYearDiscountService;
+import core.basesyntax.strategy.impl.BirthdayDiscountService;
+
+public class DiscountStrategy {
+    public DiscountService getDiscountServiceBySpecialEvent(String specialEvent) {
+        switch (specialEvent) {
+        case "New Year":
+            return new NewYearDiscountService();
+        case "Black Friday":
+            return new BlackFridayDiscountService();
+        case "Birthday":
+            return new BirthdayDiscountService();
+        default:
+            return new DefaultDiscountService();
+        }
+    }
+}
+

src/main/java/core/basesyntax/strategy/DiscountService

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+package core.basesyntax.strategy;
+
+public interface DiscountService {
+    double getDiscount();
+}

src/main/java/core/basesyntax/strategy/impl/BirthdayDiscountService

@@ -0,0 +1,10 @@
+package core.basesyntax.strategy.impl;
+
+import core.basesyntax.strategy.DiscountService;
+
+public class BirthdayDiscountService implements DiscountService {
+    @Override
+    public double getDiscount() {
+        return (double) 33;
+    }
+}

src/main/java/core/basesyntax/strategy/impl/BlackFridayDiscountService

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+package core.basesyntax.strategy.impl;
+
+import core.basesyntax.strategy.DiscountService;
+
+public class BlackFridayDiscountService implements DiscountService {
+    @Override
+    public double getDiscount() {
+        return (double) 45;
+    }
+}

src/main/java/core/basesyntax/strategy/impl/DefaultDiscountService

@@ -0,0 +1,10 @@
+package core.basesyntax.strategy.impl;
+
+import core.basesyntax.strategy.DiscountService;
+
+public class DefaultDiscountService implements DiscountService {
+    @Override
+    public double getDiscount() {
+        return (double) 0;
+    }
+}

src/main/java/core/basesyntax/strategy/impl/NewYearDiscountService

@@ -0,0 +1,10 @@
+package core.basesyntax.strategy.impl;
+
+import core.basesyntax.strategy.DiscountService;
+
+public class NewYearDiscountService implements DiscountService {
+    @Override
+    public double getDiscount() {
+        return (double) 20;
+    }
+}