import { cleanup, render, screen } from '@testing-library/react';
import { afterEach, describe, expect, it, vi } from 'vitest';
import {
  CLOCK_FONT_SIZE_MAX_PT,
  CLOCK_FONT_SIZE_MIN_PT,
  resolveClockTimeFontSizePt,
} from './clock-font-size';

// Mock next-intl
vi.mock('next-intl', () => ({
  useTranslations: (ns: string) => (key: string) => {
    const map: Record<string, Record<string, string>> = {
      widgets: {
        'clock.name': 'Clock',
        'clock.description': 'Shows the current time',
        'clock.dateHint': 'Show date',
      },
    };
    return map[ns]?.[key] ?? key;
  },
}));

afterEach(() => {
  cleanup();
  vi.useRealTimers();
});

describe('ClockWidget', () => {
  it('renders a time string with timezone config', async () => {
    vi.useFakeTimers();
    vi.setSystemTime(new Date('2026-06-24T12:30:00Z'));

    const { ClockWidget } = await import('./clock-widget');
    render(
      <ClockWidget
        instanceId="clock-1"
        config={{ timezone: 'Europe/Berlin', showDate: true }}
        isEditMode={false}
      />,
    );

    // Should render a time element
    const timeEl = screen.getByRole('time');
    expect(timeEl).toBeInTheDocument();
    // Time text should be non-empty
    expect(timeEl.textContent).toBeTruthy();

    // Should render a date element when showDate is true
    const dateEl = screen.getByTestId('clock-date');
    expect(dateEl).toBeInTheDocument();
    expect(dateEl.textContent).toBeTruthy();

    vi.useRealTimers();
  });

  it('does not render date element when showDate is false', async () => {
    vi.useFakeTimers();
    vi.setSystemTime(new Date('2026-06-24T12:30:00Z'));

    const { ClockWidget } = await import('./clock-widget');
    render(
      <ClockWidget
        instanceId="clock-2"
        config={{ timezone: 'Europe/Berlin', showDate: false }}
        isEditMode={false}
      />,
    );

    expect(screen.queryByTestId('clock-date')).not.toBeInTheDocument();

    vi.useRealTimers();
  });

  // --- quick-260916-bwo: Skalierung per Container-Query, feste Punktgroesse ---
  // jsdom verwirft clamp()/min() in style.fontSize (gemessen) — deshalb liegt die
  // automatische Groesse in einer Tailwind-KLASSE und nur die feste Punktgroesse
  // im Inline-Style. Die Tests lesen fuer 'auto' die Klasse, fuer 'fixed' style.

  it('Test 3 (quick-260916-bwo): resolveClockTimeFontSizePt laesst nur endliche Zahlen 8..200 durch (T-BWO-01)', () => {
    expect(resolveClockTimeFontSizePt({ timeFontSizePt: 36 })).toBe(36);
    expect(resolveClockTimeFontSizePt({ timeFontSizePt: 8 })).toBe(8);
    expect(resolveClockTimeFontSizePt({ timeFontSizePt: 200 })).toBe(200);
    expect(resolveClockTimeFontSizePt({ timeFontSizePt: 36.5 })).toBe(36.5);
    expect(resolveClockTimeFontSizePt({ timeFontSizePt: 7 })).toBeNull();
    expect(resolveClockTimeFontSizePt({ timeFontSizePt: 201 })).toBeNull();
    expect(resolveClockTimeFontSizePt({ timeFontSizePt: '36' })).toBeNull();
    expect(resolveClockTimeFontSizePt({ timeFontSizePt: Number.NaN })).toBeNull();
    expect(resolveClockTimeFontSizePt({ timeFontSizePt: Number.POSITIVE_INFINITY })).toBeNull();
    expect(resolveClockTimeFontSizePt({ timeFontSizePt: null })).toBeNull();
    expect(resolveClockTimeFontSizePt({})).toBeNull();
    expect(CLOCK_FONT_SIZE_MIN_PT).toBe(8);
    expect(CLOCK_FONT_SIZE_MAX_PT).toBe(200);
  });

  it('Test 4 (quick-260916-bwo): feste Punktgroesse -> Inline-Style 36pt, Datum 14.4pt, data-font-mode fixed', async () => {
    vi.useFakeTimers();
    vi.setSystemTime(new Date('2026-06-24T12:30:00Z'));

    const { ClockWidget } = await import('./clock-widget');
    render(
      <ClockWidget
        instanceId="clock-3"
        config={{ timezone: 'Europe/Berlin', showDate: true, timeFontSizePt: 36 }}
        isEditMode={false}
      />,
    );

    const timeEl = screen.getByRole('time');
    expect(timeEl.style.fontSize).toBe('36pt');
    expect(timeEl.getAttribute('data-font-mode')).toBe('fixed');
    expect(screen.getByTestId('clock-date').style.fontSize).toBe('14.4pt');
  });

  it('Test 5 (quick-260916-bwo): ohne Punktgroesse -> kein Inline-Style, data-font-mode auto, Container-Query-Klassen', async () => {
    vi.useFakeTimers();
    vi.setSystemTime(new Date('2026-06-24T12:30:00Z'));

    const { ClockWidget } = await import('./clock-widget');
    render(
      <ClockWidget
        instanceId="clock-4"
        config={{ timezone: 'Europe/Berlin', showDate: true }}
        isEditMode={false}
      />,
    );

    const timeEl = screen.getByRole('time');
    expect(timeEl.style.fontSize).toBe('');
    expect(timeEl.getAttribute('data-font-mode')).toBe('auto');
    expect(timeEl.className).toMatch(/cqw/);
    expect(timeEl.className).toMatch(/cqh/);
    const dateEl = screen.getByTestId('clock-date');
    expect(dateEl.className).toMatch(/cq[wh]/);
    expect(dateEl.style.fontSize).toBe('');
  });

  it('Test 6 (quick-260916-bwo): Zeichenketten-Wert wird ignoriert — auto, kein Inline-Style (T-BWO-01)', async () => {
    vi.useFakeTimers();
    vi.setSystemTime(new Date('2026-06-24T12:30:00Z'));

    const { ClockWidget } = await import('./clock-widget');
    render(
      <ClockWidget
        instanceId="clock-5"
        config={{ timezone: 'Europe/Berlin', showDate: true, timeFontSizePt: '36' }}
        isEditMode={false}
      />,
    );

    const timeEl = screen.getByRole('time');
    expect(timeEl.style.fontSize).toBe('');
    expect(timeEl.getAttribute('data-font-mode')).toBe('auto');
    expect(timeEl.className).toMatch(/cqw/);
    expect(screen.getByTestId('clock-date').style.fontSize).toBe('');
  });
});