import { PlatformPackager } from "app-builder-lib"
import { executeFinally } from "builder-util"
import * as path from "path"
import { hdiUtil } from "./hdiuil"

export { DmgTarget } from "./dmg"

const root = path.join(__dirname, "..")

export function getDmgTemplatePath() {
  return path.join(root, "templates")
}

export function getDmgVendorPath() {
  return path.join(root, "vendor")
}

export async function attachAndExecute(dmgPath: string, readWrite: boolean, task: () => Promise<any>) {
  //noinspection SpellCheckingInspection
  const args = ["attach", "-noverify", "-noautoopen"]
  if (readWrite) {
    args.push("-readwrite")
  }

  args.push(dmgPath)
  const attachResult = await hdiUtil(args)
  const deviceResult = attachResult == null ? null : /^(\/dev\/\w+)/.exec(attachResult)
  const device = deviceResult == null || deviceResult.length !== 2 ? null : deviceResult[1]
  if (device == null) {
    throw new Error(`Cannot mount: ${attachResult}`)
  }

  return await executeFinally(task(), () => detach(device))
}

export async function detach(name: string) {
  return hdiUtil(["detach", "-quiet", name])
}

export async function computeBackground(packager: PlatformPackager<any>): Promise<string> {
  const resourceList = await packager.resourceList
  if (resourceList.includes("background.tiff")) {
    return path.join(packager.buildResourcesDir, "background.tiff")
  } else if (resourceList.includes("background.png")) {
    return path.join(packager.buildResourcesDir, "background.png")
  } else {
    return path.join(getDmgTemplatePath(), "background.tiff")
  }
}

/** @internal */
export function serializeString(data: string) {
  return (
    '  $"' +
    data
      .match(/.{1,32}/g)!
      .map(it => it.match(/.{1,4}/g)!.join(" "))
      .join('"\n  $"') +
    '"'
  )
}