// Name: Download Instagram Video
// Description: Prompts for an Instagram video URL and downloads the video file locally.
// Author: kenNash
// GitHub: kenNash

import "@johnlindquist/kit"

let instagramGetUrl: any
try {
  instagramGetUrl = (await import("instagram-url-direct")).default
} catch {
  await installMissingPackage("instagram-url-direct")
  instagramGetUrl = (await import("instagram-url-direct")).default
}

const urlInput: string = await arg({
  placeholder: "Paste Instagram video URL",
  strict: false,
  validate: (input: string) => {
    try {
      const u = new URL(input.trim())
      if (!/instagram\.com/.test(u.hostname)) return "Please enter a valid instagram.com URL"
      return true
    } catch {
      return "Please enter a valid URL"
    }
  },
})

setLoading(true)
try {
  const res = await instagramGetUrl(urlInput.trim())
  const urls: string[] =
    res?.url_list ||
    res?.urls ||
    (Array.isArray(res) ? res : []) ||
    []

  const directUrl: string | undefined = urls[0]
  if (!directUrl) {
    setLoading(false)
    await div(md("No downloadable video URL found for this Instagram link."))
    exit()
  }

  const buffer: Buffer = await download(directUrl)

  let fileName = ""
  try {
    const u = new URL(directUrl)
    fileName = path.basename(u.pathname)
  } catch {
    // Fallback filename
  }
  if (!fileName || !/\.(mp4|mov|m4v|webm)$/i.test(fileName)) {
    fileName = `instagram-video-${formatDate(new Date(), "yyyyMMdd-HHmmss")}.mp4`
  }

  const outPath = home("Downloads", fileName)
  await writeFile(outPath, buffer)

  setLoading(false)
  await notify(`Saved: ${fileName}`)
  await revealFile(outPath)
} catch (error: any) {
  setLoading(false)
  await div(md(`Failed to download video.\n\n${error?.message || error}`))
}