feat: enhance inventory management with category and location filters

backend/src/inventory/inventory.service.ts

@@ -14,6 +14,20 @@ type InventoryQuery = {
 export class InventoryService {
   constructor(private prisma: PrismaService) {}
 
+  private readonly productWithCategoryInclude = {
+    include: {
+      categoryRef: {
+        include: {
+          parent: {
+            include: {
+              parent: true,
+            },
+          },
+        },
+      },
+    },
+  };
+
   private throwInventoryItemNotFound(id: number): never {
     throw new NotFoundException(`Inventory item with id ${id} not found`);
   }
@@ -59,7 +73,7 @@ export class InventoryService {
     return this.prisma.inventoryItem.findMany({
       where,
       include: {
-        product: true,
+        product: this.productWithCategoryInclude,
       },
       orderBy,
     });
@@ -78,7 +92,7 @@ export class InventoryService {
         quantity: new Prisma.Decimal(newQuantity),
       },
       include: {
-        product: true,
+          product: this.productWithCategoryInclude,
       },
     });
 
@@ -154,7 +168,7 @@ export class InventoryService {
         : undefined,
     },
     include: {
-      product: true,
+      product: this.productWithCategoryInclude,
     },
   });
 }
@@ -222,7 +236,7 @@ export class InventoryService {
       where: { id },
       data: updateData,
       include: {
-        product: true,
+        product: this.productWithCategoryInclude,
       },
     });
   }