import { render } from '@testing-library/react';
import type { ReactNode } from 'react';
import { createRef } from 'react';
import { describe, expect, it, vi } from 'vitest';

import { PlayerContextProvider, type PlayerContextValue } from '../../player/context';
import { Video } from '../video';

describe('Video', () => {
  function createMockStore() {
    return {
      state: { volume: 1, muted: false },
      attach: vi.fn(() => vi.fn()),
      subscribe: vi.fn(() => vi.fn()),
      destroy: vi.fn(),
    };
  }

  function createWrapper(value: PlayerContextValue) {
    return function Wrapper({ children }: { children: ReactNode }) {
      return <PlayerContextProvider value={value}>{children}</PlayerContextProvider>;
    };
  }

  describe('standalone (without Provider)', () => {
    it('renders without error', () => {
      const { container } = render(<Video data-testid="video" />);
      const video = container.querySelector('video');
      expect(video).toBeTruthy();
      expect(video?.getAttribute('data-testid')).toBe('video');
    });

    it('passes props to video element', () => {
      const { container } = render(<Video src="test.mp4" controls autoPlay playsInline />);

      const video = container.querySelector('video') as HTMLVideoElement;
      expect(video?.getAttribute('src')).toBe('test.mp4');
      expect(video?.hasAttribute('controls')).toBe(true);
      expect(video?.hasAttribute('autoplay')).toBe(true);
      expect(video?.hasAttribute('playsinline')).toBe(true);
    });

    it('renders children', () => {
      const { container } = render(
        <Video>
          <source src="test.mp4" type="video/mp4" />
          <track kind="captions" src="captions.vtt" />
        </Video>
      );

      const video = container.querySelector('video');
      expect(video?.querySelector('source')).toBeTruthy();
      expect(video?.querySelector('track')).toBeTruthy();
    });

    it('forwards ref correctly', () => {
      const ref = createRef<HTMLVideoElement>();
      render(<Video ref={ref} />);

      expect(ref.current).toBeInstanceOf(HTMLVideoElement);
    });
  });

  describe('with Provider', () => {
    it('calls setMedia on mount', () => {
      const setMedia = vi.fn();
      const store = createMockStore();
      const value: PlayerContextValue = { store: store as any, media: null, setMedia };

      render(<Video />, { wrapper: createWrapper(value) });

      expect(setMedia).toHaveBeenCalledWith(expect.any(HTMLVideoElement));
    });

    it('calls setMedia with null on unmount', () => {
      const setMedia = vi.fn();
      const store = createMockStore();
      const value: PlayerContextValue = { store: store as any, media: null, setMedia };

      const { unmount } = render(<Video />, { wrapper: createWrapper(value) });

      setMedia.mockClear();
      unmount();

      expect(setMedia).toHaveBeenCalledWith(null);
    });

    it('forwards ref while also registering media', () => {
      const setMedia = vi.fn();
      const store = createMockStore();
      const value: PlayerContextValue = { store: store as any, media: null, setMedia };

      const ref = createRef<HTMLVideoElement>();
      render(<Video ref={ref} />, { wrapper: createWrapper(value) });

      expect(ref.current).toBeInstanceOf(HTMLVideoElement);
      expect(setMedia).toHaveBeenCalledWith(ref.current);
    });
  });
});