import { describe, expect, it } from 'vitest';
import { importFile } from '../../src/importers/importer';
import { genericProfile } from '../../src/profiles/generic/generic-profile';
import { ImportError } from '../../src/shared/errors';

const options = { profiles: [genericProfile] };

describe('structured import errors', () => {
  it('wraps unexpected parser failures with a machine-readable diagnostic', async () => {
    const file = new File(['{"finding":'], 'broken.json', { type: 'application/json' });

    try {
      await importFile(file, options);
      throw new Error('Expected JSON import to fail.');
    } catch (error) {
      expect(error).toBeInstanceOf(ImportError);
      expect((error as ImportError).diagnostics).toContainEqual(expect.objectContaining({
        code: 'file-parse-error',
        severity: 'error',
        details: { extension: 'json' }
      }));
    }
  });

  it('reports an empty decoded import with a dedicated diagnostic', async () => {
    const file = new File(['\r\n\r\n'], 'empty.csv', { type: 'text/csv' });

    try {
      await importFile(file, options);
      throw new Error('Expected empty import to fail.');
    } catch (error) {
      expect(error).toBeInstanceOf(ImportError);
      expect((error as ImportError).diagnostics).toContainEqual(expect.objectContaining({
        code: 'empty-import',
        severity: 'error'
      }));
    }
  });
});