/* @vitest-environment jsdom */

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

import type { EditorAsset } from './ImageCanvasEditorTypes';
import { ImageCanvasProjectAssetPickerDialog } from './ImageCanvasProjectAssetPickerDialog';

function createAsset(overrides: Partial<EditorAsset>): EditorAsset {
  return {
    id: 'asset-1',
    label: '素材 1',
    src: 'https://example.test/asset-1.png',
    mediaType: 'image',
    width: 64,
    height: 64,
    folderId: 'folder-1',
    sourceKind: 'uploaded',
    sourceType: 'uploaded',
    persisted: true,
    ...overrides,
  };
}

const ASSETS: EditorAsset[] = [
  createAsset({ id: 'asset-hero', label: '主角立绘' }),
  createAsset({
    id: 'asset-town',
    label: '小镇背景',
    mediaType: 'video',
    src: 'https://example.test/town.mp4',
  }),
  createAsset({
    id: 'asset-bgm',
    label: '背景音乐',
    mediaType: 'audio',
    src: 'https://example.test/bgm.mp3',
  }),
];

describe('ImageCanvasProjectAssetPickerDialog', () => {
  it('selects several assets, shows the count and returns the id snapshot', () => {
    const onConfirm = vi.fn();
    render(
      <ImageCanvasProjectAssetPickerDialog
        open
        assets={ASSETS}
        selectedAssetIds={[]}
        onCancel={() => {}}
        onConfirm={onConfirm}
      />,
    );

    fireEvent.click(screen.getByRole('option', { name: '选择参考图主角立绘' }));
    fireEvent.click(screen.getByRole('option', { name: '选择参考图小镇背景' }));

    expect(screen.getByText('已选 2 个')).toBeTruthy();
    expect(
      screen
        .getByRole('option', { name: '选择参考图主角立绘' })
        .getAttribute('aria-selected'),
    ).toBe('true');

    fireEvent.click(screen.getByRole('button', { name: '确认选择参考图' }));
    expect(onConfirm).toHaveBeenCalledWith(['asset-hero', 'asset-town']);
  });

  it('clears only the current selection and keeps cancel free of side effects', () => {
    const onCancel = vi.fn();
    const onConfirm = vi.fn();
    render(
      <ImageCanvasProjectAssetPickerDialog
        open
        assets={ASSETS}
        selectedAssetIds={['asset-bgm']}
        onCancel={onCancel}
        onConfirm={onConfirm}
      />,
    );

    expect(screen.getByText('已选 1 个')).toBeTruthy();
    fireEvent.click(screen.getByRole('button', { name: '清空' }));
    expect(screen.getByText('已选 0 个')).toBeTruthy();
    expect(onConfirm).not.toHaveBeenCalled();

    fireEvent.click(screen.getByRole('button', { name: '取消' }));
    expect(onCancel).toHaveBeenCalledTimes(1);
    expect(onConfirm).not.toHaveBeenCalled();
  });

  it('deselects one asset from the selected chips', () => {
    render(
      <ImageCanvasProjectAssetPickerDialog
        open
        assets={ASSETS}
        selectedAssetIds={['asset-hero', 'asset-town']}
        onCancel={() => {}}
        onConfirm={() => {}}
      />,
    );

    const selectedRow = screen.getByLabelText('已选参考图');
    fireEvent.click(
      within(selectedRow).getByRole('button', { name: '取消参考图主角立绘' }),
    );

    expect(screen.getByText('已选 1 个')).toBeTruthy();
  });

  it('filters by category and search text with dialog-local state', () => {
    render(
      <ImageCanvasProjectAssetPickerDialog
        open
        assets={ASSETS}
        selectedAssetIds={[]}
        onCancel={() => {}}
        onConfirm={() => {}}
      />,
    );

    fireEvent.click(screen.getByRole('button', { name: '视频' }));
    expect(
      screen.queryByRole('option', { name: '选择参考图主角立绘' }),
    ).toBeNull();
    expect(
      screen.getByRole('option', { name: '选择参考图小镇背景' }),
    ).toBeTruthy();

    fireEvent.click(screen.getByRole('button', { name: '全部' }));
    fireEvent.change(screen.getByLabelText('搜索参考图素材'), {
      target: { value: '音乐' },
    });
    expect(
      screen.getByRole('option', { name: '选择参考图背景音乐' }),
    ).toBeTruthy();
    expect(
      screen.queryByRole('option', { name: '选择参考图小镇背景' }),
    ).toBeNull();
  });

  it('restarts from the caller-provided selection each time it opens', () => {
    const { rerender } = render(
      <ImageCanvasProjectAssetPickerDialog
        open
        assets={ASSETS}
        selectedAssetIds={['asset-hero']}
        onCancel={() => {}}
        onConfirm={() => {}}
      />,
    );
    fireEvent.click(screen.getByRole('button', { name: '清空' }));
    expect(screen.getByText('已选 0 个')).toBeTruthy();

    rerender(
      <ImageCanvasProjectAssetPickerDialog
        open={false}
        assets={ASSETS}
        selectedAssetIds={['asset-hero']}
        onCancel={() => {}}
        onConfirm={() => {}}
      />,
    );
    rerender(
      <ImageCanvasProjectAssetPickerDialog
        open
        assets={ASSETS}
        selectedAssetIds={['asset-hero']}
        onCancel={() => {}}
        onConfirm={() => {}}
      />,
    );

    expect(screen.getByText('已选 1 个')).toBeTruthy();
  });

  /**
   * 弹窗里的搜索 / 分类 / 在选中的选择是用户正在做的工作，不能被父级的一次普通重渲染清掉。
   *
   * 调用方（`useImageCanvasGenerationSurface`）每次渲染都会重算 `selectedAssetIds`，
   * 把它的身份放进重置 effect 的依赖里，就等于「父级一渲染就清空」。
   *
   * 变异验证：把 `selectedAssetIds` 加回 effect 依赖，本用例必须失败。
   */
  it('keeps the in-progress search and selection across parent re-renders', () => {
    const { rerender } = render(
      <ImageCanvasProjectAssetPickerDialog
        open
        assets={ASSETS}
        selectedAssetIds={[]}
        onCancel={() => {}}
        onConfirm={() => {}}
      />,
    );

    fireEvent.change(screen.getByLabelText('搜索参考图素材'), {
      target: { value: '主角' },
    });
    fireEvent.click(screen.getByRole('option', { name: '选择参考图主角立绘' }));
    expect(screen.getByText('已选 1 个')).toBeTruthy();
    expect(
      screen.queryByRole('option', { name: '选择参考图小镇背景' }),
    ).toBeNull();

    // 父级重渲染：`selectedAssetIds` 换了一个新数组身份，内容不变。
    rerender(
      <ImageCanvasProjectAssetPickerDialog
        open
        assets={ASSETS}
        selectedAssetIds={[...[]]}
        onCancel={() => {}}
        onConfirm={() => {}}
      />,
    );

    expect(
      (screen.getByLabelText('搜索参考图素材') as HTMLInputElement).value,
    ).toBe('主角');
    expect(screen.getByText('已选 1 个')).toBeTruthy();
    expect(
      screen
        .getByRole('option', { name: '选择参考图主角立绘' })
        .getAttribute('aria-selected'),
    ).toBe('true');
    expect(
      screen.queryByRole('option', { name: '选择参考图小镇背景' }),
    ).toBeNull();
  });

  it('shows an empty state when the project has no registered assets', () => {
    render(
      <ImageCanvasProjectAssetPickerDialog
        open
        assets={[]}
        selectedAssetIds={[]}
        onCancel={() => {}}
        onConfirm={() => {}}
      />,
    );

    expect(screen.getByText('当前项目还没有已登记素材')).toBeTruthy();
  });

  /**
   * 禁用候选的「变灰」不能压在禁用原因上。
   *
   * 「分类不同」这类小字是用户唯一能看到的解释，整卡 `opacity-60` 会让它几乎读不出来；
   * 视觉上的禁用感由缩略图与名称承担（这里用类名契约钉住分工，jsdom 不渲染真实对比度）。
   *
   * 变异验证：把 `opacity-60` 挪回整卡 `<button>` 上，本用例必须失败。
   */
  it('keeps the disabled reason at full contrast instead of dimming the whole card', () => {
    render(
      <ImageCanvasProjectAssetPickerDialog
        open
        assets={ASSETS}
        selectedAssetIds={[]}
        assetBlockedReasons={{ 'asset-town': '分类不同' }}
        onCancel={() => {}}
        onConfirm={() => {}}
      />,
    );

    const option = screen.getByRole('option', { name: '选择参考图小镇背景' });
    const media = option.firstElementChild as HTMLElement;
    const reason = screen.getByText('分类不同');

    // 整卡不再压透明度，只保留不可点的光标语义。
    expect(option.className).toContain('cursor-not-allowed');
    expect(option.className).not.toMatch(/opacity-\d/u);
    // 变灰只压在缩略图上。
    expect(media.className).toMatch(/opacity-\d/u);
    expect(reason.className).not.toMatch(/opacity-\d/u);
    expect(reason.className).toContain('font-medium');
    expect(reason.className).toContain('var(--platform-text-strong)');
    // 禁用项仍然渲染（不隐藏），原因与可点性都在。
    expect((option as HTMLButtonElement).disabled).toBe(true);
  });
});