import React from 'react';
import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest';
import { render, screen, fireEvent, cleanup } from '@testing-library/react';
import SupportPage from '../app/support/page';
import { SupportContactForm } from '../components/support-contact-form';

describe('WEB-W2: public Support Center', () => {
  afterEach(cleanup);

  it('renders a grounded FAQ and a real email contact channel', () => {
    render(<SupportPage />);
    expect(screen.getByText('Frequently asked')).toBeDefined();
    expect(screen.getByText(/Can I export my ride data\?/i)).toBeDefined();
    expect(screen.getByText(/How do I turn on two-factor authentication/i)).toBeDefined();
    // Email fallback is present as a real mailto link.
    const mailLinks = screen.getAllByRole('link', { name: /support@motorsignal\.app/i });
    expect(mailLinks.length).toBeGreaterThan(0);
    expect(mailLinks[0].getAttribute('href')).toBe('mailto:support@motorsignal.app');
  });

  it('validates input and does not claim any submission on invalid data', () => {
    render(<SupportContactForm />);
    fireEvent.click(screen.getByRole('button', { name: /Compose support email/i }));

    expect(screen.getByText(/tell us your name/i)).toBeDefined();
    expect(screen.getByText(/valid email address/i)).toBeDefined();
    expect(screen.getByText(/at least 10 characters/i)).toBeDefined();
    // No success/opened confirmation on invalid submit.
    expect(screen.queryByText(/email app should have opened/i)).toBeNull();
    // Truthful disclaimer is always present.
    expect(screen.getByText(/don.?t submit a ticket on your behalf/i)).toBeDefined();
  });

  it('opens a prefilled email (no simulated ticket) when the form is valid', () => {
    const originalLocation = window.location;
    const hrefSpy = vi.fn();
    // Replace window.location with a mock that records href assignments.
    Object.defineProperty(window, 'location', {
      configurable: true,
      value: {
        set href(value: string) {
          hrefSpy(value);
        },
        get href() {
          return '';
        },
      },
    });

    try {
      render(<SupportContactForm />);
      fireEvent.change(screen.getByLabelText('Your name'), { target: { value: 'Alex Rider' } });
      fireEvent.change(screen.getByLabelText('Email'), { target: { value: 'alex@example.com' } });
      fireEvent.change(screen.getByLabelText('Topic'), { target: { value: 'Bug report' } });
      fireEvent.change(screen.getByLabelText(/How can we help/i), {
        target: { value: 'The replay map tiles are not loading on my ride.' },
      });

      fireEvent.click(screen.getByRole('button', { name: /Compose support email/i }));

      expect(hrefSpy).toHaveBeenCalledTimes(1);
      const url = hrefSpy.mock.calls[0][0] as string;
      expect(url.startsWith('mailto:support@motorsignal.app?')).toBe(true);
      expect(decodeURIComponent(url)).toContain('[Bug report]');
      expect(decodeURIComponent(url)).toContain('alex@example.com');
      expect(screen.getByText(/email app should have opened/i)).toBeDefined();
    } finally {
      Object.defineProperty(window, 'location', {
        configurable: true,
        value: originalLocation,
      });
    }
  });
});