implement form actions for invoices + docs

dashboard-app-course/app/lib/actions.ts

@@ -0,0 +1,62 @@
+'use server';
+
+import { z } from 'zod';
+import { revalidatePath } from 'next/cache';
+import { redirect } from 'next/navigation';
+import postgres from 'postgres';
+
+const sql = postgres(process.env.POSTGRES_URL!, {ssl: 'require'});
+
+const FormSchema = z.object({
+    id: z.string(),
+    customerId: z.string(),
+    amount: z.coerce.number(),
+    status: z.enum(['pending', 'paid']),
+    date: z.string(),
+});
+
+const CreateInvoice = FormSchema.omit({id: true, date: true});
+
+export async function createInvoice(formData: FormData){
+    const { customerId, amount, status } = CreateInvoice.parse({
+        customerId: formData.get('customerId'),
+        amount: formData.get('amount'),
+        status: formData.get('status'),
+    });
+
+    const amountInCents = amount * 100;
+    const date = new Date().toISOString().split('T')[0];
+
+    await sql`
+    INSERT INTO invoices (customer_Id, amount, status, date)
+    VALUES (${customerId}, ${amountInCents}, ${status}, ${date})
+    `;
+
+    revalidatePath('/dashboard/invoices');
+    redirect('/dashboard/invoices');
+}
+
+const UpdateInvoice = FormSchema.omit({id: true, date: true});
+
+export async function updateInvoice(id: string, formData: FormData){
+    const { customerId, amount, status } = UpdateInvoice.parse({
+        customerId: formData.get('customerId'),
+        amount: formData.get('amount'),
+        status: formData.get('status'),
+    });
+
+    const amountInCents = amount * 100;
+    await sql`
+        UPDATE invoices
+        SET customer_id = ${customerId}, amount = ${amountInCents}, status = ${status}
+        WHERE id = ${id}
+    `;
+
+    revalidatePath('/dashboard/invoices');
+    redirect('/dashboard/invoices');
+}
+
+export async function deleteInvoice(id: string){
+    await sql`DELETE FROM invoices WHERE id = ${id}`;
+    revalidatePath('/dashboard/invoices');
+}