🔨 convert BackstagePassItem from anemic to rich

src/main/java/com/gildedrose/item_helpers/ItemHandler.java

@@ -3,62 +3,33 @@ package com.gildedrose.item_helpers;
 import com.gildedrose.main.Item;
 
 import static java.lang.Math.max;
-import static java.lang.Math.min;
 
 public class ItemHandler {
 
-    private final Item item;
+  private final Item item;
 
-    public ItemHandler(Item item) {
+  public ItemHandler(Item item) {
-        this.item = item;
+    this.item = item;
-    }
+  }
 
-    public void decrementSellInDate() {
+  public void decrementSellInDate() {
-        item.sellIn--;
+    item.sellIn--;
-    }
+  }
 
-    public boolean beforeSellInDate() {
+  public boolean beforeSellInDate() {
-        return item.sellIn >= 0;
+    return item.sellIn >= 0;
-    }
+  }
+  
+  public void decrementQuality() {
+    item.quality = max(item.quality - 1, 0);
+  }
 
-    public boolean lessThan5DaysToSellIn() {
+  public void decrementQualityBy2() {
-        return item.sellIn >= 0 && item.sellIn <= 5;
+    item.quality = max(item.quality - 2, 0);
-    }
+  }
 
-    public boolean lessThan10DaysToSellIn() {
+  public void decrementQualityBy4() {
-        return item.sellIn >= 5 && item.sellIn <= 10;
+    item.quality = max(item.quality - 4, 0);
-    }
+  }
-
-    public boolean moreThan10DaysToSellIn() {
-        return item.sellIn >= 10;
-    }
-
-    public void makeQualityZero() {
-        item.quality = 0;
-    }
-
-    public void incrementQuality() {
-        item.quality = min(item.quality + 1, 50);
-    }
-
-    public void incrementQualityBy2() {
-        item.quality = min(item.quality + 2, 50);
-    }
-
-    public void incrementQualityBy3() {
-        item.quality = min(item.quality + 3, 50);
-    }
-
-    public void decrementQuality() {
-        item.quality = max(item.quality - 1, 0);
-    }
-
-    public void decrementQualityBy2() {
-        item.quality = max(item.quality - 2, 0);
-    }
-
-    public void decrementQualityBy4() {
-        item.quality = max(item.quality - 4, 0);
-    }
 
 }

src/main/java/com/gildedrose/items/BackstagePassItem.java

@@ -1,32 +1,66 @@
 package com.gildedrose.items;
 
-import com.gildedrose.item_helpers.ItemHandler;
 import com.gildedrose.item_helpers.ItemType;
 import com.gildedrose.main.Item;
 
+import static java.lang.Math.min;
+
 public class BackstagePassItem implements ItemType {
 
   public static final String BACKSTAGE_PASS = "Backstage passes to a TAFKAL80ETC concert";
-  private final ItemHandler item;
+
+  private final Item item;
 
   public BackstagePassItem(Item item) {
-    this.item = new ItemHandler(item);
+    this.item = item;
   }
 
   @Override
   public void updateQuality() {
-    item.decrementSellInDate();
+    decrementSellInDate();
-    if (item.moreThan10DaysToSellIn()) {
+    if (moreThan10DaysToSellIn()) {
-      item.incrementQuality();
+      incrementQuality();
-    } else if (item.lessThan10DaysToSellIn()) {
+    } else if (lessThan10DaysToSellIn()) {
-      item.incrementQualityBy2();
+      incrementQualityBy2();
-    } else if (item.lessThan5DaysToSellIn()) {
+    } else if (lessThan5DaysToSellIn()) {
-      item.incrementQualityBy3();
+      incrementQualityBy3();
     } else {
-      item.makeQualityZero();
+      makeQualityZero();
     }
   }
 
+  public void decrementSellInDate() {
+    item.sellIn--;
+  }
+
+  public boolean lessThan5DaysToSellIn() {
+    return item.sellIn >= 0 && item.sellIn <= 5;
+  }
+
+  public boolean lessThan10DaysToSellIn() {
+    return item.sellIn >= 5 && item.sellIn <= 10;
+  }
+
+  public boolean moreThan10DaysToSellIn() {
+    return item.sellIn >= 10;
+  }
+
+  public void makeQualityZero() {
+    item.quality = 0;
+  }
+
+  public void incrementQuality() {
+    item.quality = min(item.quality + 1, 50);
+  }
+
+  public void incrementQualityBy2() {
+    item.quality = min(item.quality + 2, 50);
+  }
+
+  public void incrementQualityBy3() {
+    item.quality = min(item.quality + 3, 50);
+  }
+
   @Override
   public String getName() {
     return BACKSTAGE_PASS;