import { test, expect } from '@playwright/test';
import { execSync } from 'child_process';

const LOGIN_EMAIL = 'checkout-e2e@example.com';
const LOGIN_PASSWORD = 'Password123!';

test.describe('Checkout Payment Step – Stripe & PayPal states', () => {
  test.beforeAll(async () => {
    execSync(
      `php artisan tenant:add-dummy --email=${LOGIN_EMAIL} --password=${LOGIN_PASSWORD} --first_name=Checkout --last_name=Tester --address="Playwrightstr. 1" --phone="+4912345678"`
    );
    execSync(
      `php artisan tinker --execute="App\\\\Models\\\\User::where('email', '${LOGIN_EMAIL}')->update(['email_verified_at' => now()]);"`
    );
  });

  test.beforeEach(async ({ page }) => {
    await page.goto('/login');
    await page.fill('input[name="email"]', LOGIN_EMAIL);
    await page.fill('input[name="password"]', LOGIN_PASSWORD);
    await page.getByRole('button', { name: /Anmelden|Login/ }).click();
    await expect(page).toHaveURL(/dashboard/);
  });

  test('Stripe payment intent error surfaces descriptive status', async ({ page }) => {
    await page.route('**/stripe/create-payment-intent', async (route) => {
      await route.fulfill({
        status: 422,
        contentType: 'application/json',
        body: JSON.stringify({ error: 'Test payment intent failure' }),
      });
    });

    await openCheckoutPaymentStep(page);

    await expect(
      page.locator('text=/Fehler beim Laden der Zahlungsdaten|Error loading payment data/')
    ).toBeVisible();
    await expect(
      page.locator('text=/Zahlungsformular bereit|Payment form ready/')
    ).not.toBeVisible();
  });

  test('Stripe payment intent ready state renders when backend responds', async ({ page }) => {
    await page.route('**/stripe/create-payment-intent', async (route) => {
      await route.fulfill({
        status: 200,
        contentType: 'application/json',
        body: JSON.stringify({ client_secret: 'pi_test_secret' }),
      });
    });

    await openCheckoutPaymentStep(page);

    await expect(
      page.locator('text=/Zahlungsformular bereit\\. Bitte gib deine Daten ein\\.|Payment form ready\\./')
    ).toBeVisible();
  });

  test('PayPal approval success updates status', async ({ page }) => {
    await stubPayPalSdk(page);

    await page.route('**/paypal/create-order', async (route) => {
      await route.fulfill({
        status: 200,
        contentType: 'application/json',
        body: JSON.stringify({ id: 'ORDER_TEST', status: 'CREATED' }),
      });
    });

    await page.route('**/paypal/capture-order', async (route) => {
      await route.fulfill({
        status: 200,
        contentType: 'application/json',
        body: JSON.stringify({ status: 'captured' }),
      });
    });

    await openCheckoutPaymentStep(page);
    await selectPayPalMethod(page);

    await page.waitForFunction(() => window.__paypalButtonsConfig !== undefined);
    await page.evaluate(async () => {
      const config = window.__paypalButtonsConfig;
      if (!config) return;

      await config.createOrder();
      await config.onApprove({ orderID: 'ORDER_TEST' });
    });

    await expect(
      page.locator('text=/Zahlung bestätigt\\. Bestellung wird abgeschlossen|Payment confirmed/')
    ).toBeVisible();
  });

  test('PayPal capture failure notifies user', async ({ page }) => {
    await stubPayPalSdk(page);

    await page.route('**/paypal/create-order', async (route) => {
      await route.fulfill({
        status: 200,
        contentType: 'application/json',
        body: JSON.stringify({ id: 'ORDER_FAIL', status: 'CREATED' }),
      });
    });

    await page.route('**/paypal/capture-order', async (route) => {
      await route.fulfill({
        status: 500,
        contentType: 'application/json',
        body: JSON.stringify({ error: 'capture_failed' }),
      });
    });

    await openCheckoutPaymentStep(page);
    await selectPayPalMethod(page);

    await page.waitForFunction(() => window.__paypalButtonsConfig !== undefined);
    await page.evaluate(async () => {
      const config = window.__paypalButtonsConfig;
      if (!config) return;

      await config.createOrder();
      await config.onApprove({ orderID: 'ORDER_FAIL' });
    });

    await expect(
      page.locator('text=/PayPal capture failed|PayPal-Abbuchung fehlgeschlagen|PayPal capture error/')
    ).toBeVisible();
  });
});

async function openCheckoutPaymentStep(page: import('@playwright/test').Page) {
    await page.goto('/packages');
    const checkoutLink = page.locator('a[href^="/checkout/"]').first();
    const href = await checkoutLink.getAttribute('href');

    if (!href) {
      throw new Error('No checkout link found on packages page.');
    }

    await page.goto(href);

    const nextButton = page.getByRole('button', {
      name: /Weiter zum Zahlungsschritt|Continue to Payment/,
    });
    if (await nextButton.isVisible()) {
      await nextButton.click();
    }

    await page.waitForSelector('text=/Zahlung|Payment/');
}

async function selectPayPalMethod(page: import('@playwright/test').Page) {
  const paypalButton = page.getByRole('button', { name: /PayPal/ });
  if (await paypalButton.isVisible()) {
    await paypalButton.click();
  }
}

async function stubPayPalSdk(page: import('@playwright/test').Page) {
  await page.route('https://www.paypal.com/sdk/js**', async (route) => {
    await route.fulfill({
      status: 200,
      contentType: 'application/javascript',
      body: `
        window.paypal = {
          Buttons: function (config) {
            window.__paypalButtonsConfig = config;
            return {
              render: function () {
                // noop
              },
            };
          },
        };
      `,
    });
  });
}

declare global {
  interface Window {
    __paypalButtonsConfig?: {
      createOrder: () => Promise<string>;
      onApprove: (data: { orderID: string }) => Promise<void>;
      onError?: (error: unknown) => void;
    };
  }
}