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

import {
  resourceCardReferenceDropContains,
  resourceCardReferenceDropHintLabel,
  resourceCardReferenceDropRect,
  resourceCardReferenceDropReferences,
} from '../src/view/project-development/resourceCardReferenceDropModel';
import type { ProjectResource } from '../src/view/project-development/resourceProjectionModel';

function resource(
  patch: Partial<ProjectResource> & { id: string },
): ProjectResource {
  return {
    category: 'character',
    subtype: 'character',
    label: patch.id,
    path: `assets/${patch.id}.png`,
    mediaType: 'image/png',
    sourceLabel: '本地上传',
    taskTitle: null,
    manifestAssetId: null,
    producerTaskId: null,
    externalResourceId: null,
    referenceResourceIds: [],
    dependencies: [],
    dependencyDepth: 0,
    ...patch,
  };
}

function elementWithRect(rect: {
  left: number;
  top: number;
  width: number;
  height: number;
}): Element {
  return {
    getBoundingClientRect: () =>
      ({
        ...rect,
        right: rect.left + rect.width,
        bottom: rect.top + rect.height,
        x: rect.left,
        y: rect.top,
        toJSON: () => ({}),
      }) as DOMRect,
  } as unknown as Element;
}

describe('拖动素材到对话：落点与引用构造', () => {
  test('没有元素或没量出尺寸都不算落点', () => {
    expect(resourceCardReferenceDropRect(null)).toBeNull();
    // 0 x 0 必须当「没有落点」：否则任何点都会被判成落在里面，画布内拖动松手也会被当成拖到对话。
    expect(
      resourceCardReferenceDropRect(
        elementWithRect({ left: 0, top: 0, width: 0, height: 0 }),
      ),
    ).toBeNull();
    expect(
      resourceCardReferenceDropRect(
        elementWithRect({ left: 10, top: 20, width: 400, height: 600 }),
      ),
    ).toEqual({ left: 10, top: 20, width: 400, height: 600 });
  });

  test('命中判据按矩形边界闭区间算', () => {
    const rect = { left: 800, top: 0, width: 400, height: 600 };
    expect(resourceCardReferenceDropContains(rect, 800, 0)).toBe(true);
    expect(resourceCardReferenceDropContains(rect, 1200, 600)).toBe(true);
    expect(resourceCardReferenceDropContains(rect, 1000, 300)).toBe(true);
    expect(resourceCardReferenceDropContains(rect, 799, 300)).toBe(false);
    expect(resourceCardReferenceDropContains(rect, 1000, 601)).toBe(false);
  });

  test('只把已登记的 manifest 素材折成引用，顺序与拖动集合一致', () => {
    const references = resourceCardReferenceDropReferences(
      ['asset:registered-b', 'featured:not-registered', 'asset:registered-a'],
      [
        resource({
          id: 'asset:registered-b',
          manifestAssetId: 'registered-b',
          subtype: 'character',
          label: '主角立绘',
          mediaType: 'image/png',
          assetCategory: 'character',
          assetTags: ['主角', '立绘'],
        }),
        resource({ id: 'featured:not-registered', label: '任务产物' }),
        resource({
          id: 'asset:registered-a',
          manifestAssetId: 'registered-a',
          subtype: 'background-music',
          label: '主城 BGM',
          mediaType: 'audio/mpeg',
          assetCategory: 'audio',
        }),
      ],
    );

    expect(references.map((reference) => reference.resourceId)).toEqual([
      'registered-b',
      'registered-a',
    ]);
    expect(references[0]).toMatchObject({
      type: 'resource',
      // 引用认的是 manifest 资产 id，不是画布投影 id。
      resourceId: 'registered-b',
      kind: 'character',
      label: '主角立绘',
      mediaType: 'image/png',
      category: 'character',
      tags: ['主角', '立绘'],
      // 与资源卡工具条那枚「引用」按钮同一个来源标记：同一素材两处进来是同一枚引用。
      source: 'resource-card',
    });
    expect(references[1]).toMatchObject({
      resourceId: 'registered-a',
      kind: 'background-music',
      category: 'audio',
    });
  });

  test('拖动集合里一条登记素材都没有时返回空数组', () => {
    expect(
      resourceCardReferenceDropReferences(
        ['featured:task'],
        [resource({ id: 'featured:task' })],
      ),
    ).toEqual([]);
    expect(resourceCardReferenceDropReferences([], [])).toEqual([]);
  });

  test('提示文案把条数说清楚，0 条时说原因而不是「引用 0 项」', () => {
    expect(resourceCardReferenceDropHintLabel(1)).toBe(
      '松手即可 @ 引用 1 项素材',
    );
    expect(resourceCardReferenceDropHintLabel(3)).toBe(
      '松手即可 @ 引用 3 项素材',
    );
    expect(resourceCardReferenceDropHintLabel(0)).toBe(
      '这些素材还没登记为项目资源，不能 @ 引用',
    );
  });
});