diff --git a/rust/src/gildedrose.rs b/rust/src/gildedrose.rs
index e65fa085..e8cc0f33 100644
--- a/rust/src/gildedrose.rs
+++ b/rust/src/gildedrose.rs
@@ -13,6 +13,20 @@ impl Item {
             quality,
         }
     }
+
+    pub fn update_quality(&mut self){
+        self.quality = if self.name.contains("Sulfuras"){
+            sulfuras_quality(self.quality, self.sell_in)
+        }else if self.name.contains("Aged Brie"){
+            brie_quality(self.quality, self.sell_in)
+        }else if self.name.contains("Backstage passes"){
+            backstage_quality(self.quality, self.sell_in)
+        }else if self.name.contains("Conjured"){
+            conjured_quality(self.quality, self.sell_in)
+        }else{
+            standard_quality(self.quality, self.sell_in)
+        }
+    }
 }
 
 impl Display for Item {
@@ -21,6 +35,56 @@ impl Display for Item {
     }
 }
 
+
+
+
+
+pub fn brie_quality(quality: i32, sell_in: i32) -> i32 {
+    if quality <= 0 || quality >= 50{
+        return quality
+    }
+    if sell_in < 0 && quality <= 48{
+        return quality + 2;
+    }
+    quality + 1
+}
+
+pub fn standard_quality(quality: i32, sell_in: i32) -> i32 {
+    if quality <= 0 || quality >= 50{
+        return quality;
+    }
+    if sell_in < 0 && quality >= 2{
+        return quality - 2;
+    }
+    quality - 1
+}
+
+pub fn sulfuras_quality(quality: i32, sell_in: i32) -> i32 {
+    return quality;
+}
+
+pub fn conjured_quality(quality: i32, sell_in: i32) -> i32 {
+    if quality <= 0 || quality >= 50{
+        return quality;
+    }
+    quality - 2
+}
+
+pub fn backstage_quality(quality: i32, sell_in: i32) -> i32 {
+    if quality <= 0 || quality >= 50{
+        return quality;
+    }
+    let updated_quality = match sell_in{
+        10...6 => quality + 2,
+        0...5 => quality + 3,
+        _ => quality + 1,
+    };
+    if updated_quality >= 50{
+        return 50;
+    }
+    return updated_quality;
+}
+
 pub struct GildedRose {
     pub items: Vec<Item>,
 }
@@ -30,60 +94,25 @@ impl GildedRose {
         GildedRose { items }
     }
 
+
+    // Todos tienen SellIn y Quality
+    // En general, Quality esta entre 0 y 50
+    // Una vez que pasa SellIn, Quality se degrada al doble de velocidad
+    // Aged Brie aumenta su Quality con el tiempo
+    // Sulfuras Nunca tiene SellIn o Quality
+    // Backstage passes también aumenta Quality a medida que se acerca SellIn
+    // -Aumenta 2 cuando faltan 10 días o menos, 3 cuando faltan 5 o menos
+    // -Es 0 cuando sellin==0
+    // Conjured bajan su calidad el doble de rápido
+    // Sulfuras siempre tiene quality en 80
     pub fn update_quality(&mut self) {
         for i in 0..self.items.len() {
-            if self.items[i].name != "Aged Brie" && self.items[i].name != "Backstage passes to a TAFKAL80ETC concert"
-            {
-                if self.items[i].quality > 0 {
-                    if self.items[i].name != "Sulfuras, Hand of Ragnaros" {
-                        self.items[i].quality = self.items[i].quality - 1;
-                    }
-                }
-            } else {
-                if self.items[i].quality < 50 {
-                    self.items[i].quality = self.items[i].quality + 1;
-
-                    if self.items[i].name == "Backstage passes to a TAFKAL80ETC concert" {
-                        if self.items[i].sell_in < 11 {
-                            if self.items[i].quality < 50 {
-                                self.items[i].quality = self.items[i].quality + 1;
-                            }
-                        }
-
-                        if self.items[i].sell_in < 6 {
-                            if self.items[i].quality < 50 {
-                                self.items[i].quality = self.items[i].quality + 1;
-                            }
-                        }
-                    }
-                }
-            }
-
-            if self.items[i].name != "Sulfuras, Hand of Ragnaros" {
-                self.items[i].sell_in = self.items[i].sell_in - 1;
-            }
-
-            if self.items[i].sell_in < 0 {
-                if self.items[i].name != "Aged Brie" {
-                    if self.items[i].name != "Backstage passes to a TAFKAL80ETC concert" {
-                        if self.items[i].quality > 0 {
-                            if self.items[i].name != "Sulfuras, Hand of Ragnaros" {
-                                self.items[i].quality = self.items[i].quality - 1;
-                            }
-                        }
-                    } else {
-                        self.items[i].quality = self.items[i].quality - self.items[i].quality;
-                    }
-                } else {
-                    if self.items[i].quality < 50 {
-                        self.items[i].quality = self.items[i].quality + 1;
-                    }
-                }
-            }
+            self.items[i].update_quality()
         }
     }
 }
 
+
 #[cfg(test)]
 mod tests {
     use super::{GildedRose, Item};
@@ -96,4 +125,7 @@ mod tests {
 
         assert_eq!("fixme", rose.items[0].name);
     }
+
+
+
 }