feat: initial implementation of modern modular webshop (shop core)

shop/lib/actions/orders.ts

@@ -0,0 +1,37 @@
+'use server'
+
+import { createClient } from '@/lib/supabase/server'
+import { revalidatePath } from 'next/cache'
+import { Order } from '../types'
+
+export async function submitOrder(orderData: {
+  product_id: string;
+  selected_modules: string[];
+  total_amount: number;
+  customer_details: any;
+}) {
+  const supabase = await createClient()
+  
+  const { data: { user } } = await supabase.auth.getUser()
+  if (!user) throw new Error('Not authenticated')
+
+  const { data, error } = await supabase
+    .from('orders')
+    .insert([{
+      user_id: user.id,
+      total_amount: orderData.total_amount,
+      items: {
+        product_id: orderData.product_id,
+        modules: orderData.selected_modules
+      },
+      billing_details: orderData.customer_details,
+      status: 'pending'
+    }])
+    .select()
+    .single()
+
+  if (error) throw error
+
+  revalidatePath('/admin/orders') // If there was an admin orders page
+  return data
+}