import { describe, expect, it } from 'vitest';

import type {
  EditorAsset,
  GenerateDialogState,
} from './ImageCanvasEditorTypes';
import { replaceProjectAssetPickerReferences } from './ImageCanvasGenerationDialogModel';
import {
  appendLimitedImageReferences,
  createGenerationInputReference,
} from './ImageCanvasGenerationModel';
import {
  PROJECT_ASSET_PICKER_CATEGORY_OPTIONS,
  projectAssetMatchesPickerFilter,
  projectAssetPickerCategory,
  projectAssetPickerReferences,
  projectAssetPickerUsesThumbnail,
} from './projectAssetReferencePickerModel';

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,
  };
}

describe('参考图弹窗素材筛选与快照', () => {
  it('derives the category from the asset media type', () => {
    expect(projectAssetPickerCategory({ mediaType: 'image' })).toBe('image');
    expect(projectAssetPickerCategory({ mediaType: 'video' })).toBe('video');
    expect(projectAssetPickerCategory({ mediaType: 'audio' })).toBe('audio');
    expect(projectAssetPickerCategory({})).toBe('image');
    // 序列帧单列一类：它不是静态图片，参考图链路也不接受它（见下一条用例）。
    expect(projectAssetPickerCategory({ mediaType: 'image-sequence' })).toBe(
      'image-sequence',
    );
    expect(
      PROJECT_ASSET_PICKER_CATEGORY_OPTIONS.map((item) => item.id),
    ).toEqual(['all', 'image', 'video', 'audio', 'image-sequence']);
  });

  it('keeps image-sequence assets out of the image category', () => {
    const sequence = createAsset({ mediaType: 'image-sequence' });

    expect(
      projectAssetMatchesPickerFilter(sequence, {
        category: 'image',
        query: '',
      }),
    ).toBe(false);
    expect(
      projectAssetMatchesPickerFilter(sequence, {
        category: 'image-sequence',
        query: '',
      }),
    ).toBe(true);
    expect(
      projectAssetMatchesPickerFilter(sequence, { category: 'all', query: '' }),
    ).toBe(true);
    // 缩略图口径跟分类走：序列帧的 src 也是图片字节，照旧画出来。
    expect(projectAssetPickerUsesThumbnail('image-sequence')).toBe(true);
    expect(projectAssetPickerUsesThumbnail('image')).toBe(true);
    expect(projectAssetPickerUsesThumbnail('video')).toBe(false);
    expect(projectAssetPickerUsesThumbnail('audio')).toBe(false);
  });

  it('参考图链路只接受图片：序列帧引用会被 appendLimitedImageReferences 过滤掉', () => {
    // 这条用例把「分类展示」与「参考图接受口径」的边界显式钉住：序列帧可以看见、
    // 可以选中（与音频 / 视频一致），但不会作为参考图进入提交数据。
    const sequence = createAsset({
      id: 'asset-sequence',
      mediaType: 'image-sequence',
      label: '勇者挥手',
    });
    const references = projectAssetPickerReferences(
      [sequence],
      ['asset-sequence'],
    );
    expect(references[0]?.mediaType).toBe('image-sequence');
    expect(appendLimitedImageReferences(undefined, references, 4)).toEqual([]);
  });

  it('stacks the category filter with the search query', () => {
    const asset = createAsset({ label: '小镇背景', assetKind: 'scene' });

    expect(
      projectAssetMatchesPickerFilter(asset, { category: 'all', query: '' }),
    ).toBe(true);
    expect(
      projectAssetMatchesPickerFilter(asset, {
        category: 'image',
        query: '小镇',
      }),
    ).toBe(true);
    expect(
      projectAssetMatchesPickerFilter(asset, {
        category: 'image',
        query: 'scene',
      }),
    ).toBe(true);
    expect(
      projectAssetMatchesPickerFilter(asset, {
        category: 'audio',
        query: '小镇',
      }),
    ).toBe(false);
    expect(
      projectAssetMatchesPickerFilter(asset, {
        category: 'all',
        query: '主角',
      }),
    ).toBe(false);
  });

  it('builds references that carry the asset id snapshot', () => {
    const assets = [
      createAsset({
        id: 'asset-hero',
        label: '主角立绘',
        objectKey: 'oss/hero.png',
      }),
      createAsset({
        id: 'asset-bgm',
        label: '背景音乐',
        mediaType: 'audio',
        sourceResourceId: 'resource-bgm',
      }),
    ];

    const references = projectAssetPickerReferences(assets, [
      'asset-hero',
      'asset-bgm',
      'asset-missing',
    ]);

    expect(references).toEqual([
      {
        id: 'project-asset-asset-hero',
        label: '主角立绘',
        src: 'oss/hero.png',
        mediaType: 'image',
        objectKey: 'oss/hero.png',
        resourceId: null,
        sourceAssetId: 'asset-hero',
      },
      {
        id: 'project-asset-asset-bgm',
        label: '背景音乐',
        src: 'https://example.test/asset-1.png',
        mediaType: 'audio',
        resourceId: 'resource-bgm',
        sourceAssetId: 'asset-bgm',
      },
    ]);
  });

  it('records the selected asset ids as the submitted task reference snapshot', () => {
    const assets = [
      createAsset({ id: 'asset-hero', label: '主角立绘' }),
      createAsset({ id: 'asset-town', label: '小镇背景' }),
    ];
    const references = projectAssetPickerReferences(assets, [
      'asset-hero',
      'asset-town',
    ]);

    const snapshot = references.flatMap((reference) =>
      createGenerationInputReference('参考图', reference),
    );

    expect(snapshot).toEqual([
      {
        title: '参考图',
        label: '主角立绘',
        refType: 'asset',
        refId: 'asset-hero',
      },
      {
        title: '参考图',
        label: '小镇背景',
        refType: 'asset',
        refId: 'asset-town',
      },
    ]);
  });

  it('returns no references and dedupes repeated ids', () => {
    const assets = [createAsset({ id: 'asset-hero', label: '主角立绘' })];

    expect(projectAssetPickerReferences(assets, [])).toEqual([]);
    expect(
      projectAssetPickerReferences(assets, ['asset-hero', 'asset-hero']),
    ).toHaveLength(1);
  });

  it('replaces the library-sourced references and keeps canvas-picked ones', () => {
    const assets = [
      createAsset({ id: 'asset-hero', label: '主角立绘' }),
      createAsset({ id: 'asset-town', label: '小镇背景' }),
    ];
    const dialog = {
      mode: 'generate',
      prompt: '画一张封面',
      status: 'idle',
      generationReferences: [
        {
          id: 'canvas-layer-1',
          label: '画布点选',
          src: 'https://example.test/canvas.png',
          mediaType: 'image',
        },
        {
          id: 'project-asset-asset-old',
          label: '已移除素材',
          src: 'https://example.test/old.png',
          mediaType: 'image',
          sourceAssetId: 'asset-old',
        },
      ],
    } satisfies GenerateDialogState;

    const next = replaceProjectAssetPickerReferences(
      dialog,
      projectAssetPickerReferences(assets, ['asset-hero', 'asset-town']),
    );

    expect(
      next?.generationReferences?.map((reference) => reference.id),
    ).toEqual([
      'canvas-layer-1',
      'project-asset-asset-hero',
      'project-asset-asset-town',
    ]);
    expect(next?.composerOpen).toBe(true);
  });

  it('leaves dialogs outside the reference-composer modes untouched', () => {
    const dialog = {
      mode: 'video',
      prompt: '',
      status: 'idle',
    } satisfies GenerateDialogState;

    expect(replaceProjectAssetPickerReferences(dialog, [])).toBe(dialog);
    expect(replaceProjectAssetPickerReferences(null, [])).toBeNull();
  });
});