/**
 * FFmpeg/FFprobe wrapper using Deno.Command
 * Works in the Deno sandbox with run: ["ffmpeg", "ffprobe"] permission
 */

interface CommandResult {
  success: boolean
  stdout: string
  stderr: string
}

export async function ffmpeg(args: string[]): Promise<CommandResult> {
  const cmd = new Deno.Command("ffmpeg", {
    args,
    stdout: "piped",
    stderr: "piped",
  })

  const { success, stdout, stderr } = await cmd.output()

  return {
    success,
    stdout: new TextDecoder().decode(stdout),
    stderr: new TextDecoder().decode(stderr),
  }
}

export async function ffprobe(args: string[]): Promise<CommandResult> {
  const cmd = new Deno.Command("ffprobe", {
    args,
    stdout: "piped",
    stderr: "piped",
  })

  const { success, stdout, stderr } = await cmd.output()

  return {
    success,
    stdout: new TextDecoder().decode(stdout),
    stderr: new TextDecoder().decode(stderr),
  }
}

export interface ProbeResult {
  format: {
    duration: number
    size: number
    bit_rate: number
  }
  streams: Array<{
    codec_type: string
    codec_name: string
    width?: number
    height?: number
  }>
}

export async function probe(input: string): Promise<ProbeResult> {
  const result = await ffprobe([
    "-protocol_whitelist", "file,http,https,tcp,tls,crypto",
    "-v", "quiet",
    "-print_format", "json",
    "-show_format",
    "-show_streams",
    input,
  ])

  if (!result.success) {
    throw new Error(`ffprobe failed: ${result.stderr}`)
  }

  return JSON.parse(result.stdout)
}