'use server';

import { z } from 'zod';
import { Resend } from 'resend';

const resend = new Resend(process.env.RESEND_API_KEY);

const orderSchema = z.object({
  name: z.string().min(2),
  phone: z.string().min(9),
  email: z.string().email(),
  address: z.string().optional(),
  notes: z.string().optional(),
  consent: z.string(),
  products: z.string(),
  total: z.string(),
});

export async function submitOrderForm(prevState: any, formData: FormData) {
  try {
    const data = orderSchema.parse({
      name: formData.get('name'),
      phone: formData.get('phone'),
      email: formData.get('email'),
      address: formData.get('address') || '',
      notes: formData.get('notes') || '',
      consent: formData.get('consent'),
      products: formData.get('products'),
      total: formData.get('total'),
    });

    const products = JSON.parse(data.products);
    const total = parseFloat(data.total);

    const productRows = products.map((p: any) =>
      `<tr><td style="padding:8px;border-bottom:1px solid #f1f5f9;">${p.name}</td><td style="padding:8px;border-bottom:1px solid #f1f5f9;text-align:center;">${p.quantity}</td><td style="padding:8px;border-bottom:1px solid #f1f5f9;text-align:right;">${(p.price * p.quantity).toLocaleString('pl-PL')} zł</td></tr>`
    ).join('');

    await resend.emails.send({
      from: process.env.RESEND_FROM_EMAIL || 'noreply@thermcool.pl',
      to: process.env.RESEND_TO_EMAIL || 'biuro@thermcool.pl',
      replyTo: data.email,
      subject: `Nowe zamówienie od ${data.name} — ${total.toLocaleString('pl-PL')} zł`,
      html: `
        <div style="font-family:Arial,sans-serif;max-width:600px;margin:0 auto;">
          <div style="background:#0F2A47;padding:20px;text-align:center;">
            <h1 style="color:#fff;margin:0;font-size:20px;">Nowe zamówienie — ThermCool</h1>
          </div>
          <div style="padding:24px;">
            <h2 style="font-size:16px;margin-top:0;">Dane klienta</h2>
            <p><strong>Imię:</strong> ${data.name}</p>
            <p><strong>Telefon:</strong> <a href="tel:${data.phone}">${data.phone}</a></p>
            <p><strong>Email:</strong> ${data.email}</p>
            ${data.address ? `<p><strong>Adres:</strong> ${data.address}</p>` : ''}
            ${data.notes ? `<p><strong>Uwagi:</strong> ${data.notes}</p>` : ''}
            <h2 style="font-size:16px;">Zamówione produkty</h2>
            <table style="width:100%;border-collapse:collapse;">
              <thead><tr style="background:#f8fafc;">
                <th style="padding:8px;text-align:left;">Produkt</th>
                <th style="padding:8px;text-align:center;">Ilość</th>
                <th style="padding:8px;text-align:right;">Wartość</th>
              </tr></thead>
              <tbody>${productRows}</tbody>
              <tfoot><tr>
                <td colspan="2" style="padding:8px;font-weight:bold;">Łącznie (urządzenia)</td>
                <td style="padding:8px;font-weight:bold;text-align:right;">${total.toLocaleString('pl-PL')} zł</td>
              </tr></tfoot>
            </table>
            <p style="margin-top:16px;font-size:12px;color:#64748b;">+ koszt montażu do ustalenia telefonicznie</p>
          </div>
        </div>
      `,
    });

    return { success: true, message: 'Dziękujemy! Skontaktujemy się z Tobą w ciągu 24 godzin, aby potwierdzić zamówienie i ustalić termin montażu.' };
  } catch (e) {
    return { success: false, message: 'Wystąpił błąd. Spróbuj ponownie lub zadzwoń do nas bezpośrednio.' };
  }
}