import { execFile } from 'node:child_process';
import { promisify } from 'node:util';

const execFileAsync = promisify(execFile);

export async function analyzeWithFfprobe(path: string): Promise<any> {
  const { stdout } = await execFileAsync('ffprobe', [
    '-v',
    'error',
    '-print_format',
    'json',
    '-show_streams',
    '-show_format',
    path
  ]);
  const json = JSON.parse(stdout);
  const video = (json.streams || []).find((s: any) => s.codec_type === 'video');
  const audio = (json.streams || [])
    .filter((s: any) => s.codec_type === 'audio')
    .map((s: any) => ({ codec_name: s.codec_name, channels: s.channels, language: s.tags?.language }));

  return {
    video: video
      ? {
          codec_name: video.codec_name,
          width: video.width,
          height: video.height,
          r_frame_rate: video.r_frame_rate
        }
      : null,
    audio,
    format: {
      duration: json.format?.duration,
      bit_rate: json.format?.bit_rate,
      format_name: json.format?.format_name
    }
  };
}

export function fallbackMediaInfo(): any {
  return {
    video: { codec_name: 'unknown', width: 1920, height: 1080, r_frame_rate: '24/1' },
    audio: [{ codec_name: 'unknown', channels: 2, language: 'und' }],
    format: { duration: '0', bit_rate: '0', format_name: 'matroska' }
  };
}