task-8-if-conditions -- refactor updateQuality

function And refactor updateQualityAfterExpired Fun simply

gildedRose/src/AgedBrie.js

-import { Item } from "./item";
+import { Item } from './item'
 
 export class AgedBrie extends Item{
-    constructor(sell_in, quality){
-        super(sell_in, quality);
-        this.name =  'Aged Brie';
-    };
+  constructor(sell_in, quality) {
+    super(sell_in, quality)
+    this.name = 'Aged Brie'
+  }
 
-    isAgedBrie() {
-        return 'Aged Brie';
+  isAgedBrie() {
+    return 'Aged Brie'
+  }
+
+  updateQuality(item) {
+    if (item.quality < 50) {
+      item.quality = item.quality + 1
     }
-}
\ No newline at end of file
+  }
+}

gildedRose/src/BackstagePass.js

-import { Item } from "./item";
+import { Item } from './item'
 
 export class BackstagePass extends Item{
-    constructor(sell_in, quality) {
-        super(sell_in, quality);
-        this.name = 'Backstage passes to a TAFKAL80ETC concert';
-    }
-    
-    isBackStage() {
-        return 'Backstage passes to a TAFKAL80ETC concert';
+  constructor(sell_in, quality) {
+    super(sell_in, quality)
+    this.name = 'Backstage passes to a TAFKAL80ETC concert'
+  }
+
+  isBackStage() {
+    return 'Backstage passes to a TAFKAL80ETC concert'
+  }
+  updateQuality(item) {
+    if (item.name === this.isBackStagePass()) {
+          if (item.quality < 50) {
+              if (item.sell_in < 11) {
+                  if (item.quality < 50) {
+                      item.quality = item.quality + 1
+                  }
+              }
+              if (item.sell_in < 6) {
+                  if (item.quality < 50) {
+                      item.quality = item.quality + 1;
+                  }
+              }
+          }
+          return;
+      }
+  }
+  updateQualityAfterExpired(item) {
+    if (item.quality < 50) {
+      item.quality = item.quality + 1
     }
-}
\ No newline at end of file
+  }
+}

gildedRose/src/Sulfuras.js

-import { Item } from "./item";
+import { Item } from './item'
 
 export class Sulfuras extends Item{
-    constructor(sell_in, quality) {
-        super(sell_in, quality);
-        this.name = 'Sulfuras, Hand of Ragnaros';
-    }
+  constructor(sell_in, quality) {
+    super(sell_in, quality)
+    this.name = 'Sulfuras, Hand of Ragnaros'
+  }
 
-    isSulfuras() {
-        return 'Sulfuras, Hand of Ragnaros';
-
-    }
-}
\ No newline at end of file
+  isSulfuras() {
+    return 'Sulfuras, Hand of Ragnaros'
+  }
+  updateQuality(item) {}
+}

gildedRose/src/item.js

@@ -10,15 +10,15 @@ export class Item {
   }
 
   isAgedBrie() {
-    return 'Aged Brie';
+    return 'Aged Brie'
   }
 
   isSulfuras() {
-    return 'Sulfuras, Hand of Ragnaros';
+    return 'Sulfuras, Hand of Ragnaros'
   }
 
   isBackStagePass() {
-    return 'Backstage passes to a TAFKAL80ETC concert';
+    return 'Backstage passes to a TAFKAL80ETC concert'
   }
 
   toString() {
@@ -26,84 +26,62 @@ export class Item {
   }
 
   createBackStagePass(sell_in, quality) {
-    new BackStagePass('Backstage passes to a TAFKAL80ETC concert', sell_in, quality);
+    new BackStagePass(
+      'Backstage passes to a TAFKAL80ETC concert',
+      sell_in,
+      quality
+    )
   }
 
   createSulfuras(sell_in, quality) {
-    new Sulfuras(sell_in, quality);
+    new Sulfuras(sell_in, quality)
   }
 
   createNormalItem(name, sell_in, quality) {
-    new Item(name, sell_in, quality);
+    new Item(name, sell_in, quality)
   }
 
   createAgedBrie(sell_in, quality) {
-    new AgedBrie(sell_in, quality);
+    new AgedBrie(sell_in, quality)
   }
 
   _updateItem(item) {
-    this.updateQualityInOneDay(item);
-    this.updateSellInInOneDay(item);
-    this.updateQualityAfterDevaluation(item);
+    this.updateQuality(item)
+    this.updateSellIn(item)
+    this.updateQualityAfterExpired(item)
   }
 
-  updateQualityInOneDay(item) {
-    if (item.name != this.isAgedBrie() && item.name != this.isBackStagePass()) {
-      if (item.quality > 0) {
-        if (item.name != this.isSulfuras()) {
-          item.quality = item.quality - 1
-        }
-      }
-    } else {
-      if (item.quality < 50) {
-        this.updateQualityAfterExpired(item)
-        if (item.name == this.isBackStagePass()) {
-          if (item.sell_in < 11) {
-            if (item.quality < 50) {
-              this.updateQualityAfterExpired(item);
-            }
-          }
-          if (item.sell_in < 6) {
-            if (item.quality < 50) {
-              this.updateQualityAfterExpired(item);
-            }
-          }
-        }
-      }
+  updateQuality(item) {
+    if (item.quality > 0) {
+      item.quality = item.quality - 1
     }
   }
 
-  updateSellInInOneDay(item) {
-    if (item.name != this.isSulfuras()) {
-      this.decreaseSellIn(item)
+  updateSellIn(item) {
+    if (item.name === this.isSulfuras()) {
+      return
     }
+    this.decreaseSellInOneDay(item)
   }
 
-  updateQualityAfterDevaluation(item) {
+  updateQualityAfterExpired(item) {
+    if (item.sell_in >= 0) {
+      return
+    }
     if (item.sell_in < 0) {
-      if (item.name != this.isAgedBrie()) {
-        if (item.name != this.isBackStagePass()) {
-          if (item.quality > 0) {
-            if (item.name != this.isSulfuras()) {
-              item.quality = item.quality - 1
-            }
-          } else {
-            item.quality = item.quality - item.quality
+      if (item.name !== this.isAgedBrie()) {
+        if (item.quality > 0) {
+          if (item.name !== this.isSulfuras()) {
+            item.quality = item.quality - 1
           }
         } else {
-          if (item.quality < 50) {
-            this.updateQualityAfterExpired(item);
-          }
+          item.quality = item.quality - item.quality
         }
       }
     }
   }
 
-  decreaseSellIn(item) {
+  decreaseSellInOneDay(item) {
     item.sell_in = item.sell_in - 1
   }
-
-  updateQualityAfterExpired(item) {
-    item.quality = item.quality + 1
-  }
 }