import { readFile } from 'node:fs/promises';
import { describe, expect, it, vi } from 'vitest';
import { isCad2DFile, loadCad } from '@hmwebviewer/viewer2d';

describe('viewer2d package interface', () => {
  it('parses and loads the sample DXF without exposing the parser result', async () => {
    const file = await readFile(
      new URL('../apps/viewer-2d-sample/public/samples/simple.dxf', import.meta.url),
    );
    const viewer = {
      load: vi.fn(),
      resize: vi.fn(),
    };
    const summary = await loadCad(viewer, {
      name: 'simple.dxf',
      data: file.buffer.slice(file.byteOffset, file.byteOffset + file.byteLength),
    });

    expect(isCad2DFile('drawing.DWG')).toBe(true);
    expect(isCad2DFile('drawing.dxf')).toBe(true);
    expect(isCad2DFile('drawing.pdf')).toBe(false);
    expect(summary).toEqual({ entityCount: 6 });
    expect(viewer.load).toHaveBeenCalledOnce();
    expect(viewer.resize).toHaveBeenCalledOnce();
  });
});