/** @vitest-environment jsdom */
import { fireEvent, render, screen } from '@testing-library/react';
import { afterEach, describe, expect, it, vi } from 'vitest';

import { createGameCreationAppManifest } from '../../../packages/shared/src/contracts/gameCreationApp';
import ProjectDevelopmentView from '../src/view/project-development';

const PREVIEW_URL = 'http://127.0.0.1:4173/';

function installInvoke() {
  window.__TAURI__ = {
    core: {
      invoke: vi.fn(async (command: string, args?: Record<string, unknown>) => {
        if (command === 'read_local_project_resource_graph') {
          return {
            resourceIds: [],
            referenceEdges: [],
            taskFlows: [],
            categories: [],
            diagnostics: [],
          };
        }
        if (command === 'read_local_project_resource_canvas_layout') {
          return {
            schemaVersion: 'game-creator-resource-layout.v1',
            projectId: args?.expectedProjectId,
            mode: args?.mode,
            revision: 0,
            positions: [],
            updatedAt: 0,
          };
        }
        throw new Error(`unexpected invoke ${command}`);
      }),
    },
  } as unknown as typeof window.__TAURI__;
}

function renderRunView() {
  installInvoke();
  const manifest = createGameCreationAppManifest(
    'run-preview-fullscreen',
    '运行页全屏预览',
  );
  render(
    <ProjectDevelopmentView
      projectName={manifest.name}
      projectPath="/tmp/run-preview-fullscreen"
      manifest={manifest}
      attachments={[]}
      recentRunStatus={null}
      recentRunStopReason={null}
      preview={{ status: 'running', url: PREVIEW_URL, port: 4173 }}
      supervisor={<div>项目总控</div>}
      onHomeOpen={vi.fn()}
      onProjectsOpen={vi.fn()}
      onNotice={vi.fn()}
    />,
  );
}

/**
 * jsdom 完全没有 Fullscreen API（`document.fullscreenEnabled` / `requestFullscreen` /
 * `fullscreenElement` 都是 undefined），所以这一组用例必须自己把宿主那一份补出来：
 * 全屏状态、元素身份与 `fullscreenchange` 都按规范最小实现，只用于验按钮的真实行为。
 */
function installFullscreenHost() {
  let fullscreenElement: Element | null = null;
  const requestFullscreen = vi.fn(function (this: Element) {
    // 这枚桩就是要记录调用方传进来的 `this`：全屏元素身份正是本用例的断言对象（画面那一格）。
    // eslint-disable-next-line @typescript-eslint/no-this-alias
    fullscreenElement = this;
    document.dispatchEvent(new Event('fullscreenchange'));
    return Promise.resolve();
  });
  const exitFullscreen = vi.fn(() => {
    fullscreenElement = null;
    document.dispatchEvent(new Event('fullscreenchange'));
    return Promise.resolve();
  });
  Object.defineProperty(document, 'fullscreenElement', {
    configurable: true,
    get: () => fullscreenElement,
  });
  Object.defineProperty(document, 'exitFullscreen', {
    configurable: true,
    value: exitFullscreen,
  });
  Object.defineProperty(Element.prototype, 'requestFullscreen', {
    configurable: true,
    writable: true,
    value: requestFullscreen,
  });
  return { requestFullscreen, exitFullscreen };
}

afterEach(() => {
  document.body.innerHTML = '';
  Reflect.deleteProperty(document, 'fullscreenElement');
  Reflect.deleteProperty(document, 'exitFullscreen');
  Reflect.deleteProperty(Element.prototype, 'requestFullscreen');
  vi.clearAllMocks();
  vi.restoreAllMocks();
});

describe('运行页「全屏预览」', () => {
  it('点画面右下角那枚按钮就把画面那一格送进全屏，再点退出', async () => {
    const { requestFullscreen, exitFullscreen } = installFullscreenHost();
    renderRunView();

    const button = await screen.findByRole('button', { name: '全屏预览' });
    // 按钮住在画面那一格里（右下角由样式给），全屏的也是那一格——不是整块工作台。
    const stage = document.querySelector('.game-run-preview');
    expect(stage).not.toBeNull();
    expect(button.closest('.game-run-preview')).toBe(stage);
    expect(button.getAttribute('aria-pressed')).toBe('false');

    fireEvent.click(button);
    expect(requestFullscreen).toHaveBeenCalledTimes(1);
    // 全屏元素就是画面那一格：按钮自己也算得出来（状态来自 fullscreenchange，不是乐观值）。
    expect(document.fullscreenElement).toBe(stage);
    const exitButton = await screen.findByRole('button', {
      name: '退出全屏预览',
    });
    expect(exitButton.getAttribute('aria-pressed')).toBe('true');

    fireEvent.click(exitButton);
    expect(exitFullscreen).toHaveBeenCalledTimes(1);
    expect(
      (await screen.findByRole('button', { name: '全屏预览' })).getAttribute(
        'aria-pressed',
      ),
    ).toBe('false');
  });

  it('宿主没有 Fullscreen API 时不渲染这枚按钮，而不是留一个点了没反应的入口', async () => {
    renderRunView();

    await screen.findByTitle('运行页全屏预览 游戏运行画面');
    expect(screen.queryByRole('button', { name: '全屏预览' })).toBeNull();
  });
});