// @vitest-environment jsdom
import {
  cleanup,
  fireEvent,
  render,
  screen,
  waitFor,
  within,
} from '@testing-library/react';
import userEvent from '@testing-library/user-event';
import { $getRoot } from 'lexical';
import { StrictMode, useState } from 'react';
import { afterEach, describe, expect, test, vi } from 'vitest';

import type {
  GameCreationAppAssetManifestEntry,
  GameIterationVersion,
} from '../../../packages/shared/src/contracts/gameCreationApp';
import {
  LOCAL_GAME_PREVIEW_INSPECT_MESSAGE,
  parseLocalGamePreviewInspectMessage,
} from '../src/features/project-workspace/LocalGamePreviewFrame';
import { ResourceReferenceInput } from '../src/features/project-workspace/ResourceReferenceInput';
import {
  type ChatComposerDraft,
  type ChatReference,
  chatReferenceListKey,
  currentIterationVersionAssets,
  dedupeChatReferences,
  dispatchResourceReferenceInsert,
  resolveActiveIterationVersion,
  RESOURCE_REFERENCE_FILTERS,
  RESOURCE_REFERENCE_INSERT_EVENT,
  RESOURCE_REFERENCE_SCOPES,
  resourceReferenceCategory,
  resourceReferenceFromAsset,
  resourceReferenceMatchesCategoryFilter,
  resourceReferenceMatchesQuery,
  resourceReferenceMatchesTagSelection,
  resourceReferenceTagLibrary,
  type RuntimeRegionReference,
} from '../src/features/project-workspace/resourceReferences';

function asset(
  id: string,
  kind: string,
  mediaType: string,
  localPath: string,
): GameCreationAppAssetManifestEntry {
  return {
    id,
    kind,
    mediaType,
    localPath,
    source: { kind: 'uploaded' },
  };
}

function iterationVersion(
  versionId: string,
  resourceIds: string[],
  parentVersionId: string | null = null,
): GameIterationVersion {
  return {
    versionId,
    parentVersionId,
    projectRevision: 1,
    resourceBindings: resourceIds.map((resourceId, index) => ({
      slotId: `slot-${index}`,
      resourceId,
    })),
    createdReason: 'initial',
    createdAt: 1,
  };
}

async function settleComposer() {
  await new Promise((resolve) => {
    setTimeout(resolve, 0);
  });
}

/**
 * 编辑器文本模型里的字符数。断言「一个引用 = 一个字符」用它而不是 DOM 文本：
 * DOM 里 chip 仍要显示 `@显示名` 给用户看，两者本来就不该相等。
 */
function composerEditor(): {
  getEditorState: () => { read: <T>(fn: () => T) => T };
} {
  const element = screen.getByLabelText('聊天') as HTMLElement & {
    __lexicalEditor?: {
      getEditorState: () => { read: <T>(fn: () => T) => T };
    };
  };
  const editor = element.__lexicalEditor;
  if (!editor) throw new Error('lexical editor instance not found');
  return editor;
}

function editorTextSize() {
  return composerEditor()
    .getEditorState()
    .read(() => $getRoot().getTextContentSize());
}

const assets = [
  asset('hero', 'character', 'image/png', 'assets/hero.png'),
  asset('enemy', 'character', 'image/png', 'assets/enemy.png'),
  asset('theme', 'background-music', 'audio/mpeg', 'assets/theme.mp3'),
];

/** 带 manifest 标签的同一批素材：标签筛选用例只换 `tags`，其余口径与 `assets` 一致。 */
const taggedAssets: GameCreationAppAssetManifestEntry[] = [
  { ...assets[0]!, tags: ['角色', '主角'] },
  { ...assets[1]!, tags: ['角色'] },
  { ...assets[2]!, tags: ['背景乐'] },
];

/**
 * 面板里的候选筛选条由共享组件渲染，标签行是它内部带 `素材筛选标签` 名字的分组。
 * 用这一层 scope 取标签 chip，避免和同名的功能分类按钮（例如「角色与对象」）串。
 */
function pickerTagGroup() {
  return within(screen.getByRole('group', { name: '素材筛选标签' }));
}

/** 取某个 aria-label 的引用输入区，把它内部（含 `@` 按钮）的操作局限定在自己身上。 */
function referenceInputByLabel(ariaLabel: string) {
  const editor = screen.getByLabelText(ariaLabel);
  const root = editor.closest('.resource-reference-input');
  if (!root)
    throw new Error(`resource reference input not found: ${ariaLabel}`);
  return within(root as HTMLElement);
}

async function insertAssetThroughPicker(ariaLabel: string, optionName: RegExp) {
  await userEvent.click(
    referenceInputByLabel(ariaLabel).getByRole('button', {
      name: '插入素材引用',
    }),
  );
  await userEvent.click(
    within(screen.getByRole('dialog', { name: '选择素材' })).getByRole(
      'option',
      { name: optionName },
    ),
  );
  await userEvent.click(screen.getByRole('button', { name: '插入引用' }));
  await settleComposer();
}

afterEach(cleanup);

describe('ResourceReferenceInput', () => {
  test('运行画面引用的判别指纹带上了绑定素材、版本、元素角色与尺寸', () => {
    const base: RuntimeRegionReference = {
      type: 'runtime-region',
      label: 'Play',
      runId: 'run-1',
      versionId: 'v1',
      elementTag: 'button',
      elementRole: 'button',
      text: '开始',
      width: 120,
      height: 40,
      resourceIds: ['hero', 'enemy'],
      source: 'runtime-picker',
    };

    // 同一个 run 里两个同文案的元素、或重新选点后绑定变了的同一块区域，都是不同引用：
    // 指纹漏字段会让 `dedupeChatReferences` 静默丢掉其中一条。
    const distinctVariants: RuntimeRegionReference[] = [
      { ...base, resourceIds: ['hero'] },
      { ...base, versionId: 'v2' },
      { ...base, elementRole: 'link' },
      { ...base, width: 200 },
      { ...base, height: 80 },
    ];
    for (const variant of distinctVariants) {
      expect(chatReferenceListKey([variant])).not.toBe(
        chatReferenceListKey([base]),
      );
      expect(dedupeChatReferences([base, variant])).toHaveLength(2);
    }

    // 绑定素材顺序不影响身份：同一组素材换个顺序还是同一条引用。
    expect(
      dedupeChatReferences([base, { ...base, resourceIds: ['enemy', 'hero'] }]),
    ).toHaveLength(1);
  });

  test('AI 润色只换文本时不会把引用一轮轮追加成重复 @显示名', async () => {
    const onChange = vi.fn<(draft: ChatComposerDraft) => void>();
    const reference = resourceReferenceFromAsset(assets[0]!, 'asset-picker');
    function Controlled() {
      const [draft, setDraft] = useState<ChatComposerDraft>({
        text: '原始需求',
        references: [reference],
      });
      return (
        <>
          <button
            type="button"
            onClick={() =>
              setDraft((current) => ({ ...current, text: '润色后的需求' }))
            }
          >
            模拟润色
          </button>
          <ResourceReferenceInput
            value={draft.text}
            references={draft.references}
            onChange={(next) => {
              onChange(next);
              setDraft(next);
            }}
            assets={assets}
            projectPath="C:/project"
            ariaLabel="聊天"
          />
        </>
      );
    }
    render(<Controlled />);
    await settleComposer();

    fireEvent.click(screen.getByRole('button', { name: '模拟润色' }));
    await settleComposer();
    await settleComposer();

    // 重建必须收敛，而且不许把「重建后的编辑器内容」当成一次用户编辑回抛给宿主：
    // 旧实现用 props 覆写 lastEmittedDraftRef，读回来的文本里多出的 `@显示名`
    // 会触发下一轮重建，文本一轮轮变长（渲染循环）。
    expect(onChange).not.toHaveBeenCalled();
    const editorText =
      document.querySelector('.resource-reference-input-editor')?.textContent ??
      '';
    expect(editorText).toContain('润色后的需求');
    expect(editorText.match(/@hero/gu) ?? []).toHaveLength(1);
    expect(screen.getByRole('button', { name: '模拟润色' })).not.toBeNull();
  });

  test('引用浮层打开时 Enter 不提交表单，关掉后恢复提交', async () => {
    const onSubmit = vi.fn();
    const user = userEvent.setup();
    function Controlled() {
      const [draft, setDraft] = useState<ChatComposerDraft>({
        text: '要一个',
        references: [],
      });
      return (
        <form
          onSubmit={(event) => {
            event.preventDefault();
            onSubmit();
          }}
        >
          <ResourceReferenceInput
            value={draft.text}
            references={draft.references}
            onChange={setDraft}
            assets={assets}
            projectPath="C:/project"
            ariaLabel="聊天"
          />
        </form>
      );
    }
    render(<Controlled />);

    // 候选浮层开着时 Enter 属于浮层（候选菜单用它选引用），输入区的 HIGH 优先级提交
    // 必须先让位，否则用户按 Enter 选候选会变成把这一轮直接发出去。
    await user.click(screen.getByRole('button', { name: '插入素材引用' }));
    await screen.findByRole('dialog', { name: '选择素材' });
    const composer = screen.getByLabelText('聊天');
    expect(fireEvent.keyDown(composer, { key: 'Enter' })).toBe(false);
    expect(onSubmit).not.toHaveBeenCalled();

    // 对照：关掉浮层后 Enter 立刻恢复提交语义，说明上面不是编辑器整体坏掉。
    await user.click(screen.getByRole('button', { name: '关闭素材选择' }));
    expect(fireEvent.keyDown(composer, { key: 'Enter' })).toBe(false);
    await waitFor(() => {
      expect(onSubmit).toHaveBeenCalledTimes(1);
    });
  });

  test('opens the asset picker, supports multi-select, and inserts stable references', async () => {
    const user = userEvent.setup();
    const onChange = vi.fn<(draft: ChatComposerDraft) => void>();
    render(
      <ResourceReferenceInput
        value=""
        references={[]}
        onChange={onChange}
        assets={assets}
        projectPath="C:/project"
        ariaLabel="聊天"
      />,
    );

    await user.click(screen.getByRole('button', { name: '插入素材引用' }));
    expect(screen.getByRole('dialog', { name: '选择素材' })).not.toBeNull();

    await user.click(screen.getByRole('option', { name: /hero/u }));
    await user.click(screen.getByRole('option', { name: /enemy/u }));
    await user.click(screen.getByRole('button', { name: '插入引用' }));

    await waitFor(() => {
      expect(onChange).toHaveBeenCalled();
    });
    const draft = onChange.mock.calls.at(-1)?.[0];
    expect(draft?.text).toBe('@hero @enemy');
    expect(draft?.references.map((reference) => reference.resourceId)).toEqual([
      'hero',
      'enemy',
    ]);
    expect(
      document.querySelector('[data-resource-reference-id="hero"]'),
    ).not.toBeNull();
  });

  test('loads image thumbnails through the controlled native preview command', async () => {
    const user = userEvent.setup();
    const invoke = vi.fn().mockResolvedValue({
      dataUrl: 'data:image/png;base64,iVBORw0KGgo=',
    });
    (
      window as unknown as {
        __TAURI__?: { core?: { invoke?: typeof invoke } };
      }
    ).__TAURI__ = { core: { invoke } };
    render(
      <StrictMode>
        <ResourceReferenceInput
          value=""
          references={[]}
          onChange={vi.fn()}
          assets={assets}
          projectPath="C:/project"
          ariaLabel="聊天"
        />
      </StrictMode>,
    );

    await user.click(screen.getByRole('button', { name: '插入素材引用' }));
    await waitFor(() => {
      expect(
        document.querySelector('.resource-reference-picker-list img'),
      ).not.toBeNull();
    });
    expect(invoke).toHaveBeenCalledWith(
      'read_local_project_image_preview',
      expect.objectContaining({
        projectPath: 'C:/project',
        relativePath: 'assets/hero.png',
      }),
    );
    delete (
      window as unknown as {
        __TAURI__?: { core?: { invoke?: typeof invoke } };
      }
    ).__TAURI__;
  });

  test('filters candidate references by name, id, kind, and functional category', () => {
    const hero = resourceReferenceFromAsset(assets[0]!, 'asset-picker');
    const theme = resourceReferenceFromAsset(assets[2]!, 'asset-picker');
    expect(resourceReferenceMatchesQuery(hero, 'her')).toBe(true);
    expect(resourceReferenceMatchesQuery(hero, 'character')).toBe(true);
    expect(resourceReferenceMatchesQuery(hero, 'missing')).toBe(false);
    expect(resourceReferenceCategory(hero)).toBe('character');
    expect(resourceReferenceCategory(theme)).toBe('audio');
    expect(hero.tags).toEqual([]);
  });

  test('exposes the six functional categories plus all as the single filter source', () => {
    expect(RESOURCE_REFERENCE_FILTERS).toEqual([
      { id: 'all', label: '全部' },
      { id: 'ui-interaction', label: 'UI 交互' },
      { id: 'character', label: '角色与对象' },
      { id: 'scene', label: '场景与环境' },
      { id: 'audio', label: '音频' },
      { id: 'document', label: '文档' },
      { id: 'unclassified', label: '待归类' },
    ]);
  });

  test('projects explicit category and manifest tags onto the reference', () => {
    const hero = resourceReferenceFromAsset(
      {
        ...assets[0]!,
        category: 'scene',
        tags: ['主舞台', '日夜'],
      },
      'asset-picker',
    );
    expect(hero.category).toBe('scene');
    expect(hero.tags).toEqual(['主舞台', '日夜']);
    expect(resourceReferenceMatchesCategoryFilter(hero, 'scene')).toBe(true);
    expect(resourceReferenceMatchesCategoryFilter(hero, 'character')).toBe(
      false,
    );
    expect(resourceReferenceMatchesCategoryFilter(hero, 'all')).toBe(true);
  });

  test('falls back to the kind-derived category when the manifest asset omits it', () => {
    const hero = resourceReferenceFromAsset(assets[0]!, 'asset-picker');
    const unclassified = resourceReferenceFromAsset(
      {
        ...assets[0]!,
        kind: 'image',
      },
      'asset-picker',
    );
    expect(resourceReferenceMatchesCategoryFilter(hero, 'character')).toBe(
      true,
    );
    expect(resourceReferenceCategory(unclassified)).toBe('unclassified');
  });

  test('resource-card insertion uses the shared structured reference event', () => {
    const reference = resourceReferenceFromAsset(assets[0]!, 'resource-card');
    const listener = vi.fn();
    window.addEventListener(RESOURCE_REFERENCE_INSERT_EVENT, listener);
    dispatchResourceReferenceInsert(reference);
    window.removeEventListener(RESOURCE_REFERENCE_INSERT_EVENT, listener);
    expect(listener).toHaveBeenCalledTimes(1);
    expect(
      (listener.mock.calls[0]?.[0] as CustomEvent).detail.reference,
    ).toEqual(reference);
  });

  test('runtime inspect messages only expose the bounded safe selection shape', () => {
    expect(
      parseLocalGamePreviewInspectMessage({
        type: LOCAL_GAME_PREVIEW_INSPECT_MESSAGE,
        action: 'selected',
        selection: {
          label: '开始游戏',
          elementTag: 'button',
          elementRole: 'button',
          text: '开始游戏',
          width: 120.4,
          height: 40.2,
          // 资源 id 允许 `:` 与非 ASCII（画布规范形态是 `local-asset:<id>`，
          // 落盘文件名派生的 id 还可能是 `persisted-角色草图.png`）；
          // 空白与路径分隔符不是资源 id，照旧丢掉。
          resourceIds: [
            'hero',
            'local-asset:hero',
            'persisted-角色草图.png',
            'bad id',
            '../secret',
            'a/b',
          ],
          sourcePath: '/assets/hero.png?token=secret',
          html: '<button>secret</button>',
        },
      }),
    ).toEqual({
      action: 'selected',
      selection: {
        label: '开始游戏',
        elementTag: 'button',
        elementRole: 'button',
        text: '开始游戏',
        width: 120.4,
        height: 40.2,
        resourceIds: ['hero', 'local-asset:hero', 'persisted-角色草图.png'],
        sourcePath: '/assets/hero.png',
      },
    });
    expect(
      parseLocalGamePreviewInspectMessage({
        type: 'unknown',
        action: 'selected',
      }),
    ).toBeNull();
  });

  test('runtime-region references travel through the same structured event', () => {
    const reference: ChatReference = {
      type: 'runtime-region',
      label: '开始按钮',
      runId: 'preview-3101',
      elementTag: 'button',
      text: '开始游戏',
      resourceIds: ['hero'],
      source: 'runtime-picker',
    };
    const listener = vi.fn();
    window.addEventListener(RESOURCE_REFERENCE_INSERT_EVENT, listener);
    dispatchResourceReferenceInsert(reference);
    window.removeEventListener(RESOURCE_REFERENCE_INSERT_EVENT, listener);
    expect(
      (listener.mock.calls[0]?.[0] as CustomEvent).detail.reference,
    ).toEqual(reference);
  });

  test('removing a chip keeps the remaining text editable', async () => {
    const user = userEvent.setup();
    const onChange = vi.fn<(draft: ChatComposerDraft) => void>();
    render(
      <ResourceReferenceInput
        value=""
        references={[]}
        onChange={onChange}
        assets={assets}
        projectPath="C:/project"
        ariaLabel="聊天"
      />,
    );

    await user.click(screen.getByRole('button', { name: '插入素材引用' }));
    await user.click(screen.getByRole('option', { name: /hero/u }));
    await user.click(screen.getByRole('button', { name: '插入引用' }));
    await screen.findByRole('button', { name: '移除引用 hero' });

    await user.click(screen.getByRole('button', { name: '移除引用 hero' }));
    await waitFor(() => {
      expect(onChange.mock.calls.at(-1)?.[0].references).toHaveLength(0);
    });
  });

  test('counts one inserted reference as a single character in the editor text model', async () => {
    const user = userEvent.setup();
    render(
      <ResourceReferenceInput
        value=""
        references={[]}
        onChange={vi.fn()}
        assets={assets}
        projectPath="C:/project"
        ariaLabel="聊天"
      />,
    );

    await user.click(screen.getByRole('button', { name: '插入素材引用' }));
    await user.click(screen.getByRole('option', { name: /hero/u }));
    await user.click(screen.getByRole('button', { name: '插入引用' }));
    await settleComposer();

    expect(
      document.querySelector('[data-resource-reference-id="hero"]'),
    ).not.toBeNull();
    // 引用是原子节点：编辑器文本模型里只占 1 个字符，加上插入时补的那个分隔空格
    // 一共 2 个。显示名 `hero` 有 4 个字符（`@hero` 是 5），如果引用按显示名算，
    // 这里会是 5 或 6，所以这条断言正好把「1 个引用 = 1 个字符」钉住。
    // 提交用的结构化引用另走 `references`，不受这个占位字符影响。
    expect(editorTextSize()).toBe(2);
  });

  test('keeps the whole reference after one delete and drops its data in one step', async () => {
    const user = userEvent.setup();
    const onChange = vi.fn<(draft: ChatComposerDraft) => void>();
    render(
      <ResourceReferenceInput
        value=""
        references={[]}
        onChange={onChange}
        assets={assets}
        projectPath="C:/project"
        ariaLabel="聊天"
      />,
    );

    await user.click(screen.getByRole('button', { name: '插入素材引用' }));
    await user.click(screen.getByRole('option', { name: /hero/u }));
    await user.click(screen.getByRole('button', { name: '插入引用' }));
    await settleComposer();

    // chip 仍把 `@显示名` 显示给用户看；删除按钮挂在 chip 自己身上
    // （`移除引用 hero` 是 chip 内部的按钮，不是脱离 chip 的独立按钮）。
    const chip = document.querySelector('[data-resource-reference-id="hero"]');
    expect(chip).not.toBeNull();
    expect(chip?.textContent).toBe('@hero');
    const deleteButton = screen.getByRole('button', { name: '移除引用 hero' });
    expect(chip?.contains(deleteButton)).toBe(true);

    // 提交用的结构化引用完整保留，末尾那个分隔空格提交前会被 trim 掉。
    expect(onChange.mock.calls.at(-1)?.[0].text).toBe('@hero');
    expect(onChange.mock.calls.at(-1)?.[0].references[0]?.resourceId).toBe(
      'hero',
    );

    // 引用节点是原子的：一次操作删掉整个 chip，不存在"删一半"的中间态。
    await user.click(deleteButton);
    await settleComposer();

    expect(
      document.querySelector('[data-resource-reference-id="hero"]'),
    ).toBeNull();
    expect(onChange.mock.calls.at(-1)?.[0].references).toHaveLength(0);
    expect(onChange.mock.calls.at(-1)?.[0].text).toBe('');
  });

  test('exposes the current-version and all-canvas scopes as the only two tabs', () => {
    expect(RESOURCE_REFERENCE_SCOPES).toEqual([
      { id: 'current-version', label: '当前版本素材' },
      { id: 'all-canvas', label: '全部画布素材' },
    ]);
  });

  test('resolves the current version from activeVersionId or the newest manifest version', () => {
    const versions = [
      iterationVersion('v1', ['hero']),
      iterationVersion('v2', ['theme'], 'v1'),
    ];
    expect(resolveActiveIterationVersion(versions, 'v1')?.versionId).toBe('v1');
    expect(resolveActiveIterationVersion(versions, null)?.versionId).toBe('v2');
    expect(resolveActiveIterationVersion(versions, undefined)?.versionId).toBe(
      'v2',
    );
    expect(resolveActiveIterationVersion(versions, 'missing')).toBeNull();
    expect(resolveActiveIterationVersion([], null)).toBeNull();
    expect(resolveActiveIterationVersion(undefined, null)).toBeNull();
  });

  test('derives current-version assets from bindings and drops dangling bindings', () => {
    const versions = [iterationVersion('v1', ['hero', 'deleted-asset'])];
    expect(
      currentIterationVersionAssets(assets, versions, 'v1').map(
        (entry) => entry.id,
      ),
    ).toEqual(['hero']);
    expect(currentIterationVersionAssets(assets, versions, 'missing')).toEqual(
      [],
    );
    expect(currentIterationVersionAssets(assets, [], null)).toEqual([]);
    expect(
      currentIterationVersionAssets(assets, [iterationVersion('v1', [])], 'v1'),
    ).toEqual([]);
  });

  test('keeps an independent search and filter state per picker scope', async () => {
    const user = userEvent.setup();
    render(
      <ResourceReferenceInput
        value=""
        references={[]}
        onChange={vi.fn()}
        assets={assets}
        versions={[
          iterationVersion('v1', ['hero', 'enemy']),
          iterationVersion('v2', ['theme'], 'v1'),
        ]}
        projectPath="C:/project"
        ariaLabel="聊天"
      />,
    );

    await user.click(screen.getByRole('button', { name: '插入素材引用' }));
    // 没传 activeVersionId 时回退到 manifest 最新版本 v2，只列出该版本绑定的资源。
    expect(
      screen
        .getByRole('tab', { name: '当前版本素材' })
        .getAttribute('aria-selected'),
    ).toBe('true');
    expect(screen.getByRole('option', { name: /theme/u })).not.toBeNull();
    expect(screen.queryByRole('option', { name: /hero/u })).toBeNull();

    await user.type(screen.getByLabelText('搜索当前版本素材'), 'the');
    expect(screen.getByRole('option', { name: /theme/u })).not.toBeNull();

    await user.click(screen.getByRole('tab', { name: '全部画布素材' }));
    // 另一个页签有自己的搜索与筛选，不受当前版本页签影响。
    const allCanvasSearch = screen.getByLabelText(
      '搜索全部画布素材',
    ) as HTMLInputElement;
    expect(allCanvasSearch.value).toBe('');
    expect(screen.getByRole('option', { name: /hero/u })).not.toBeNull();
    expect(screen.getByRole('option', { name: /enemy/u })).not.toBeNull();

    await user.type(allCanvasSearch, 'hero');
    expect(screen.queryByRole('option', { name: /enemy/u })).toBeNull();
    await user.click(screen.getByRole('button', { name: '音频' }));
    expect(screen.queryByRole('option', { name: /hero/u })).toBeNull();
    expect(screen.getByText('没有匹配的素材')).not.toBeNull();

    await user.click(screen.getByRole('tab', { name: '当前版本素材' }));
    expect(
      (screen.getByLabelText('搜索当前版本素材') as HTMLInputElement).value,
    ).toBe('the');
    expect(screen.getByRole('option', { name: /theme/u })).not.toBeNull();
  });

  test('shows an empty state when the active version has no bound resources', async () => {
    const user = userEvent.setup();
    render(
      <ResourceReferenceInput
        value=""
        references={[]}
        onChange={vi.fn()}
        assets={assets}
        activeVersionId="v1"
        versions={[iterationVersion('v1', ['deleted-asset'])]}
        projectPath="C:/project"
        ariaLabel="聊天"
      />,
    );

    await user.click(screen.getByRole('button', { name: '插入素材引用' }));
    // 当前版本没有可用素材时默认落到「全部画布素材」，切回当前版本页签是空态。
    await user.click(screen.getByRole('tab', { name: '当前版本素材' }));
    expect(screen.getByText('当前版本还没有绑定素材')).not.toBeNull();
    expect(screen.queryByRole('option')).toBeNull();

    await user.click(screen.getByRole('tab', { name: '全部画布素材' }));
    expect(screen.getByRole('option', { name: /hero/u })).not.toBeNull();
  });

  test('shows the current-version empty state when the project has no versions', async () => {
    const user = userEvent.setup();
    render(
      <ResourceReferenceInput
        value=""
        references={[]}
        onChange={vi.fn()}
        assets={assets}
        versions={[]}
        projectPath="C:/project"
        ariaLabel="聊天"
      />,
    );

    await user.click(screen.getByRole('button', { name: '插入素材引用' }));
    await user.click(screen.getByRole('tab', { name: '当前版本素材' }));
    expect(screen.getByText('当前版本还没有绑定素材')).not.toBeNull();
  });

  test('refreshes chip and candidate display names after a resource rename', async () => {
    const user = userEvent.setup();
    const onChange = vi.fn<(draft: ChatComposerDraft) => void>();
    const renamedAssets = [
      asset('hero', 'character', 'image/png', 'assets/hero-final.png'),
      assets[1]!,
      assets[2]!,
    ];
    render(
      <ResourceReferenceInput
        value="用这个角色"
        references={[resourceReferenceFromAsset(assets[0]!, 'asset-picker')]}
        onChange={onChange}
        assets={renamedAssets}
        projectPath="C:/project"
        ariaLabel="聊天"
      />,
    );

    await waitFor(() => {
      expect(
        document.querySelector('.resource-reference-chip-label')?.textContent,
      ).toBe('hero-final');
    });
    await waitFor(() => {
      expect(onChange.mock.calls.at(-1)?.[0].references[0]?.label).toBe(
        'hero-final',
      );
    });

    await user.click(screen.getByRole('button', { name: '插入素材引用' }));
    expect(screen.getByRole('option', { name: /hero-final/u })).not.toBeNull();
    expect(screen.queryByRole('option', { name: /hero /u })).toBeNull();
  });

  test('restores a cross-session draft with the caret at the end of the text', async () => {
    const user = userEvent.setup();
    const onChange = vi.fn<(draft: ChatComposerDraft) => void>();
    const { rerender } = render(
      <ResourceReferenceInput
        value="上一个会话的草稿"
        references={[]}
        onChange={onChange}
        assets={assets}
        projectPath="C:/project"
        ariaLabel="聊天"
      />,
    );

    // 切换 / 重开会话：外部草稿被整体替换。
    rerender(
      <ResourceReferenceInput
        value="恢复出来的草稿"
        references={[]}
        onChange={onChange}
        assets={assets}
        projectPath="C:/project"
        ariaLabel="聊天"
      />,
    );

    await user.click(screen.getByRole('button', { name: '插入素材引用' }));
    await user.click(screen.getByRole('option', { name: /hero/u }));
    await user.click(screen.getByRole('button', { name: '插入引用' }));
    await settleComposer();

    expect(onChange.mock.calls.at(-1)?.[0].text).toBe('恢复出来的草稿@hero');
  });

  test('标签库按 manifest 标签派生：计数只算候选、排序稳定、多标签取交集', () => {
    const references = taggedAssets.map((entry) =>
      resourceReferenceFromAsset(entry, 'asset-picker'),
    );
    expect(resourceReferenceTagLibrary(references)).toEqual([
      { tag: '角色', assetCount: 2, assetIds: ['enemy', 'hero'] },
      { tag: '背景乐', assetCount: 1, assetIds: ['theme'] },
      { tag: '主角', assetCount: 1, assetIds: ['hero'] },
    ]);

    const hero = references[0]!;
    const enemy = references[1]!;
    const theme = references[2]!;
    // 空选择不过滤；单标签按「素材带这个标签」判。
    expect(resourceReferenceMatchesTagSelection(hero, [])).toBe(true);
    expect(resourceReferenceMatchesTagSelection(theme, ['角色'])).toBe(false);
    // 多标签是 AND：hero 同时有「角色」「主角」才算命中，enemy 只有「角色」。
    expect(resourceReferenceMatchesTagSelection(hero, ['角色', '主角'])).toBe(
      true,
    );
    expect(resourceReferenceMatchesTagSelection(enemy, ['角色', '主角'])).toBe(
      false,
    );
  });

  test('标签筛选把不符合的候选筛掉，多标签叠加，再与搜索关键字、功能分类叠加', async () => {
    const user = userEvent.setup();
    render(
      <ResourceReferenceInput
        value=""
        references={[]}
        onChange={vi.fn()}
        assets={taggedAssets}
        projectPath="C:/project"
        ariaLabel="聊天"
      />,
    );

    await user.click(screen.getByRole('button', { name: '插入素材引用' }));
    // 没传 versions 时默认落在「全部画布素材」，标签行按这一页签的候选派生。
    expect(screen.getAllByRole('option')).toHaveLength(3);
    expect(pickerTagGroup().getByText('角色').parentElement?.textContent).toBe(
      '角色2',
    );

    await user.click(pickerTagGroup().getByRole('button', { name: /^角色/u }));
    // 只勾一个标签：没带这个标签的素材必须消失，不是"排前面"。
    expect(screen.getByRole('option', { name: /hero/u })).not.toBeNull();
    expect(screen.getByRole('option', { name: /enemy/u })).not.toBeNull();
    expect(screen.queryByRole('option', { name: /theme/u })).toBeNull();

    await user.click(pickerTagGroup().getByRole('button', { name: /^主角/u }));
    // 第二个标签再收一层：两个标签都命中的只剩 hero。
    expect(screen.getByRole('option', { name: /hero/u })).not.toBeNull();
    expect(screen.queryByRole('option', { name: /enemy/u })).toBeNull();
    expect(
      pickerTagGroup()
        .getByRole('button', { name: /^主角/u })
        .getAttribute('aria-pressed'),
    ).toBe('true');

    // 关键字叠在标签之上：hero 不含 'enemy'，两个标签 + 关键字一起就空了。
    await user.type(screen.getByLabelText('搜索全部画布素材'), 'enemy');
    expect(screen.queryByRole('option')).toBeNull();
    expect(screen.getByText('没有匹配的素材')).not.toBeNull();

    // 功能分类也参与叠加：hero 是 character，切到「音频」后同样为空。
    await user.clear(screen.getByLabelText('搜索全部画布素材'));
    await user.click(screen.getByRole('button', { name: '音频' }));
    expect(screen.queryByRole('option')).toBeNull();

    // 取消两个标签，分类仍在生效：只剩音频素材 theme。
    await user.click(pickerTagGroup().getByRole('button', { name: /^主角/u }));
    await user.click(pickerTagGroup().getByRole('button', { name: /^角色/u }));
    expect(screen.getByRole('option', { name: /theme/u })).not.toBeNull();
    expect(screen.queryByRole('option', { name: /hero/u })).toBeNull();
  });

  test('两个页签各自持有一份独立的标签库与已选标签', async () => {
    const user = userEvent.setup();
    render(
      <ResourceReferenceInput
        value=""
        references={[]}
        onChange={vi.fn()}
        assets={taggedAssets}
        versions={[iterationVersion('v1', ['hero', 'theme'])]}
        projectPath="C:/project"
        ariaLabel="聊天"
      />,
    );

    await user.click(screen.getByRole('button', { name: '插入素材引用' }));
    // 当前版本 v1 只绑定 hero / theme，标签计数也只看这两个。
    expect(
      screen
        .getByRole('tab', { name: '当前版本素材' })
        .getAttribute('aria-selected'),
    ).toBe('true');
    expect(pickerTagGroup().getByText('角色').parentElement?.textContent).toBe(
      '角色1',
    );
    expect(pickerTagGroup().queryByText('主角')).not.toBeNull();
    await user.click(pickerTagGroup().getByRole('button', { name: /^角色/u }));
    expect(screen.getByRole('option', { name: /hero/u })).not.toBeNull();
    expect(screen.queryByRole('option', { name: /theme/u })).toBeNull();

    await user.click(screen.getByRole('tab', { name: '全部画布素材' }));
    // 另一个页签有自己的已选标签（此时为空）与自己的标签计数。
    expect(screen.getAllByRole('option')).toHaveLength(3);
    expect(
      pickerTagGroup()
        .getByRole('button', { name: /^角色/u })
        .getAttribute('aria-pressed'),
    ).toBe('false');
    expect(pickerTagGroup().getByText('角色').parentElement?.textContent).toBe(
      '角色2',
    );

    await user.click(screen.getByRole('tab', { name: '当前版本素材' }));
    // 切回来仍是自己那份选择与筛后结果。
    expect(
      pickerTagGroup()
        .getByRole('button', { name: /^角色/u })
        .getAttribute('aria-pressed'),
    ).toBe('true');
    expect(screen.queryByRole('option', { name: /theme/u })).toBeNull();
  });

  test('聊天与快速编辑提示词插入同一素材：草稿文本与引用完全一致', async () => {
    const chatOnChange = vi.fn<(draft: ChatComposerDraft) => void>();
    const quickEditOnChange = vi.fn<(draft: ChatComposerDraft) => void>();
    render(
      <>
        <ResourceReferenceInput
          value=""
          references={[]}
          onChange={chatOnChange}
          assets={taggedAssets}
          projectPath="C:/project"
          ariaLabel="聊天"
        />
        <ResourceReferenceInput
          value=""
          references={[]}
          onChange={quickEditOnChange}
          assets={taggedAssets}
          projectPath="C:/project"
          ariaLabel="快速编辑提示词"
          multiline
          rows={3}
          showPolishAction={false}
        />
      </>,
    );

    await insertAssetThroughPicker('聊天', /hero/u);
    await insertAssetThroughPicker('快速编辑提示词', /hero/u);

    const chatDraft = chatOnChange.mock.calls.at(-1)?.[0];
    const quickEditDraft = quickEditOnChange.mock.calls.at(-1)?.[0];
    // 同一个资产在两条入口上插入，回填文本与结构化引用必须逐字相同：
    // 「快速编辑」不允许出现第二种引用格式。
    expect(chatDraft?.text).toBe('@hero');
    expect(quickEditDraft).toEqual(chatDraft);
    expect(quickEditDraft?.references).toEqual([
      resourceReferenceFromAsset(taggedAssets[0]!, 'asset-picker'),
    ]);
    expect(
      document.querySelectorAll('[data-resource-reference-id="hero"]'),
    ).toHaveLength(2);
  });

  test('快速编辑提示词输入区不渲染内置润色入口：润色归宿主的 ResourcePromptPolishSlot', async () => {
    render(
      <ResourceReferenceInput
        value="把夜色改成星空"
        references={[]}
        onChange={vi.fn()}
        assets={taggedAssets}
        projectPath="C:/project"
        ariaLabel="快速编辑提示词"
        multiline
        rows={3}
        showPolishAction={false}
      />,
    );

    expect(screen.queryByRole('button', { name: 'AI 润色' })).toBeNull();
    // `@` 入口照旧在：润色收起来不影响引用。
    expect(
      referenceInputByLabel('快速编辑提示词').getByRole('button', {
        name: '插入素材引用',
      }),
    ).not.toBeNull();
  });
});