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

import {
  createSafeVirtualFileName,
  safeFileName,
  safeOutputFileName,
  splitFileName,
} from '../../../src/media/safe-file-name';

describe('safe filenames', () => {
  it('removes path traversal, control characters and shell-like punctuation', () => {
    expect(safeFileName('../../My $ video\u0000 (final).MP4')).toBe(
      'My-video-final.mp4'
    );
    expect(safeFileName('..\\..\\evil.webm')).toBe('evil.webm');
    expect(safeFileName('../')).toBe('file');
  });

  it('handles Unicode, hidden names and reserved device names', () => {
    expect(safeFileName('Crème brûlée.mov')).toBe('Creme-brulee.mov');
    expect(safeFileName('.env')).toBe('env');
    expect(safeFileName('CON.mp4')).toBe('_CON.mp4');
  });

  it('preserves a short extension while enforcing the requested maximum', () => {
    const result = safeFileName(`${'a'.repeat(200)}.mp4`, {
      maxLength: 32,
    });
    expect(result).toHaveLength(32);
    expect(result.endsWith('.mp4')).toBe(true);
  });

  it('creates generated virtual names without leaking the original stem', () => {
    expect(createSafeVirtualFileName('private-holiday.mov', 3)).toBe(
      'source-3.mov'
    );
    expect(() => createSafeVirtualFileName('x.mp4', -1)).toThrow();
  });

  it('creates deterministic download names and splits compound extensions', () => {
    expect(safeOutputFileName('My export (1)', '.WEBM')).toBe(
      'My-export-1.webm'
    );
    expect(safeOutputFileName('Project', 'avproject.json')).toBe(
      'Project.avproject.json'
    );
    expect(safeOutputFileName('Project.v2', 'mp4')).toBe('Project.v2.mp4');
    expect(splitFileName('archive.tar.gz')).toEqual({
      stem: 'archive.tar',
      extension: '.gz',
    });
  });
});