update getRatingDistribution() : modify SQL query in rating percentag…

…e calculation

src/models/Product.php

@@ -85,7 +85,7 @@ public static function getCategories(): array
             return [];
         }
 
-        $callback = fn($obj): string => $obj->category;
+        $callback = fn ($obj): string => $obj->category;
 
         return array_map($callback, $result);
     }
@@ -394,7 +394,14 @@ public function getRatingDistribution(): array
         // Query the database to get the percentage distribution of ratings
         $query = <<< EOL
             SELECT rating, 
-            COUNT(*) * 100.0 / (SELECT COUNT(*) FROM review WHERE product_id = :product_id) AS percentage
+            COUNT(*) * 100.0 / (
+                SELECT COUNT(*)
+                FROM review r
+                JOIN order_product op ON r.client_id = op.client_id
+                JOIN `order` o ON op.order_id = o.order_id
+                WHERE r.product_id = :product_id 
+                AND op.product_id = :product_id
+            ) AS percentage
             FROM review
             WHERE product_id = :product_id
             GROUP BY rating
@@ -433,4 +440,4 @@ public function updateProduct(array $newProductData): bool
 
         return $this->update($newProductData, ['product_id' => $this->product_id], $this->table);
     }
-}
+}