const downloadFileFromGithub = require('./download-file-from-github')
const fs = require('fs-extra')
const os = require('os')
const path = require('path')
const spawnSync = require('./spawn-sync')

module.exports = function (packagedAppPath) {
  if (!process.env.ATOM_MAC_CODE_SIGNING_CERT_DOWNLOAD_URL && !process.env.ATOM_MAC_CODE_SIGNING_CERT_PATH) {
    console.log('Skipping code signing because the ATOM_MAC_CODE_SIGNING_CERT_DOWNLOAD_URL environment variable is not defined'.gray)
    return
  }

  let certPath = process.env.ATOM_MAC_CODE_SIGNING_CERT_PATH
  if (!certPath) {
    certPath = path.join(os.tmpdir(), 'mac.p12')
    downloadFileFromGithub(process.env.ATOM_MAC_CODE_SIGNING_CERT_DOWNLOAD_URL, certPath)
  }
  try {
    console.log(`Ensuring keychain ${process.env.ATOM_MAC_CODE_SIGNING_KEYCHAIN} exists`)
    try {
      spawnSync('security', [
        'show-keychain-info',
        process.env.ATOM_MAC_CODE_SIGNING_KEYCHAIN
      ], {stdio: 'inherit'})
    } catch (err) {
      console.log(`Creating keychain ${process.env.ATOM_MAC_CODE_SIGNING_KEYCHAIN}`)
      // The keychain doesn't exist, try to create it
      spawnSync('security', [
        'create-keychain',
        '-p', process.env.ATOM_MAC_CODE_SIGNING_KEYCHAIN_PASSWORD,
        process.env.ATOM_MAC_CODE_SIGNING_KEYCHAIN
      ], {stdio: 'inherit'})

      // List the keychain to "activate" it.  Somehow this seems
      // to be needed otherwise the signing operation fails
      spawnSync('security', [
        'list-keychains',
        '-s', process.env.ATOM_MAC_CODE_SIGNING_KEYCHAIN
      ], {stdio: 'inherit'})

      // Make sure it doesn't time out before we use it
      spawnSync('security', [
        'set-keychain-settings',
        '-t', '3600',
        '-u', process.env.ATOM_MAC_CODE_SIGNING_KEYCHAIN
      ], {stdio: 'inherit'})
    }

    console.log(`Unlocking keychain ${process.env.ATOM_MAC_CODE_SIGNING_KEYCHAIN}`)
    const unlockArgs = ['unlock-keychain']
    // For signing on local workstations, password could be entered interactively
    if (process.env.ATOM_MAC_CODE_SIGNING_KEYCHAIN_PASSWORD) {
      unlockArgs.push('-p', process.env.ATOM_MAC_CODE_SIGNING_KEYCHAIN_PASSWORD)
    }
    unlockArgs.push(process.env.ATOM_MAC_CODE_SIGNING_KEYCHAIN)
    spawnSync('security', unlockArgs, {stdio: 'inherit'})

    console.log(`Importing certificate at ${certPath} into ${process.env.ATOM_MAC_CODE_SIGNING_KEYCHAIN} keychain`)
    spawnSync('security', [
      'import', certPath,
      '-P', process.env.ATOM_MAC_CODE_SIGNING_CERT_PASSWORD,
      '-k', process.env.ATOM_MAC_CODE_SIGNING_KEYCHAIN,
      '-T', '/usr/bin/codesign'
    ])

    console.log('Running incantation to suppress dialog when signing on macOS Sierra')
    try {
      spawnSync('security', [
        'set-key-partition-list', '-S', 'apple-tool:,apple:', '-s',
        '-k', process.env.ATOM_MAC_CODE_SIGNING_KEYCHAIN_PASSWORD,
        process.env.ATOM_MAC_CODE_SIGNING_KEYCHAIN
      ])
    } catch (e) {
      console.log('Incantation failed... maybe this isn\'t Sierra?')
    }

    console.log(`Code-signing application at ${packagedAppPath}`)
    spawnSync('codesign', [
      '--deep', '--force', '--verbose',
      '--keychain', process.env.ATOM_MAC_CODE_SIGNING_KEYCHAIN,
      '--sign', 'Developer ID Application: GitHub', packagedAppPath
    ], {stdio: 'inherit'})
  } finally {
    if (!process.env.ATOM_MAC_CODE_SIGNING_CERT_PATH) {
      console.log(`Deleting certificate at ${certPath}`)
      fs.removeSync(certPath)
    }
  }
}