feat: enhance product model with subcategory, brand, tags, and nutrition; update related DTOs and services

frontend/app/admin/products/actions.ts

@@ -8,11 +8,15 @@ export async function updateProduct(formData: FormData) {
   const name = String(formData.get('name') || '').trim();
   const canonicalName = String(formData.get('canonicalName') || '').trim();
   const category = String(formData.get('category') || '').trim();
+  const subcategory = String(formData.get('subcategory') || '').trim();
+  const brand = String(formData.get('brand') || '').trim();
 
   if (!name) throw new Error('Namn får inte vara tomt.');
   if (name.length > 100) throw new Error('Namn får inte vara längre än 100 tecken.');
   if (canonicalName.length > 100) throw new Error('Canonical name får inte vara längre än 100 tecken.');
   if (category.length > 100) throw new Error('Kategori får inte vara längre än 100 tecken.');
+  if (subcategory.length > 100) throw new Error('Underkategori får inte vara längre än 100 tecken.');
+  if (brand.length > 100) throw new Error('Varumärke får inte vara längre än 100 tecken.');
 
   const res = await fetch(`${API_BASE}/api/products/${id}`, {
     method: 'PATCH',
@@ -21,6 +25,8 @@ export async function updateProduct(formData: FormData) {
       name: name || undefined,
       canonicalName: canonicalName || undefined,
       category: category || null,
+      subcategory: subcategory || null,
+      brand: brand || null,
     }),
     cache: 'no-store',
   });
@@ -33,6 +39,22 @@ export async function updateProduct(formData: FormData) {
   revalidatePath('/admin/products');
 }
 
+export async function setProductTags(productId: number, tags: string[]) {
+  const res = await fetch(`${API_BASE}/api/products/${productId}/tags`, {
+    method: 'PUT',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({ tags }),
+    cache: 'no-store',
+  });
+
+  if (!res.ok) {
+    const text = await res.text();
+    throw new Error(`Kunde inte uppdatera taggar: ${text}`);
+  }
+
+  revalidatePath('/admin/products');
+}
+
 export async function deleteProduct(id: number) {
   const res = await fetch(`${API_BASE}/api/products/${id}`, {
     method: 'DELETE',