'use server';

import { z } from 'zod';
import { sql } from '@vercel/postgres';
import { revalidatePath } from 'next/cache';
import {redirect} from "next/navigation";

const FormSchema = z.object({
    id: z.string(),
    customerId: z.string(),
    amount: z.coerce.number(),
    status: z.enum(['pending', 'paid']),
    date: z.string(),
});

const UpdateInvoice = FormSchema.omit({ id: true, date: true });

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];

    try {
        await sql`
      INSERT INTO invoices (customer_id, amount, status, date)
      VALUES (${customerId}, ${amountInCents}, ${status}, ${date})
    `;
    } catch (error) {
        return {
            message: 'Database Error: Failed to Create Invoice.',
        };
    }

    revalidatePath('/dashboard/invoices');
    redirect('/dashboard/invoices');
}


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;

    try {
        await sql`
        UPDATE invoices
        SET customer_id = ${customerId}, amount = ${amountInCents}, status = ${status}
        WHERE id = ${id}
      `;
    } catch (error) {
        return { message: 'Database Error: Failed to Update Invoice.' };
    }

    revalidatePath('/dashboard/invoices');
    redirect('/dashboard/invoices');
}

export async function deleteInvoice(id: string) {
    throw new Error('Failed to Delete Invoice');
    try {
        await sql`DELETE FROM invoices WHERE id = ${id}`;
        revalidatePath('/dashboard/invoices');
        return { message: 'Deleted Invoice.' };
    } catch (error) {
        return { message: 'Database Error: Failed to Delete Invoice.' };
    }
}