refactor: update main method

src/main/java/io/github/akadir/casestudy/CaseStudy.java

@@ -1,13 +1,32 @@
 package io.github.akadir.casestudy;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
+import io.github.akadir.casestudy.discount.campaign.CategoryCampaign;
+import io.github.akadir.casestudy.discount.campaign.base.Campaign;
+import io.github.akadir.casestudy.discount.coupon.ConcreteCoupon;
+import io.github.akadir.casestudy.discount.coupon.base.Coupon;
+import io.github.akadir.casestudy.discount.enumeration.DiscountType;
+import io.github.akadir.casestudy.product.model.Category;
+import io.github.akadir.casestudy.product.model.Product;
+import io.github.akadir.casestudy.shopping.service.ShoppingCartService;
+import io.github.akadir.casestudy.shopping.service.impl.ConcreteShoppingCartServiceImpl;
 
 public class CaseStudy {
-    private static final Logger log = LoggerFactory.getLogger(CaseStudy.class);
 
     public static void main(String[] args) {
-        // TODO run required flow 
-        log.info("Hello world!");
+        Category food = new Category("food");
+
+        Product apple = new Product("Apple", 100.0, food);
+        Product almond = new Product("Almonds", 150.0, food);
+
+        ShoppingCartService shoppingCartService = new ConcreteShoppingCartServiceImpl();
+
+        shoppingCartService.addProduct(apple);
+        shoppingCartService.addProduct(almond);
+
+        Campaign campaign = new CategoryCampaign(food, DiscountType.AMOUNT, 10);
+        Coupon coupon = new ConcreteCoupon(50.0, DiscountType.RATE, 10);
+
+        shoppingCartService.applyCampaign(campaign);
+        shoppingCartService.applyCoupon(coupon);
     }
 }