/**
 * @module util-entitlements
 */

'use strict'

const path = require('path')

const plist = require('plist')
const os = require('os')

const util = require('./util')
const debuglog = util.debuglog
const getAppContentsPath = util.getAppContentsPath
const readFileAsync = util.readFileAsync
const writeFileAsync = util.writeFileAsync

let tmpFileCounter = 0

/**
 * This function returns a promise completing the entitlements automation: The process includes checking in `Info.plist` for `ElectronTeamID` or setting parsed value from identity, and checking in entitlements file for `com.apple.security.application-groups` or inserting new into array. A temporary entitlements file may be created to replace the input for any changes introduced.
 * @function
 * @param {Object} opts - Options.
 * @returns {Promise} Promise.
 */
module.exports.preAutoEntitlements = function (opts) {
  // If entitlements file not provided, default will be used. Fixes #41
  var appInfoPath = path.join(getAppContentsPath(opts), 'Info.plist')
  var appInfo
  var entitlements

  debuglog('Automating entitlement app group...', '\n',
    '> Info.plist:', appInfoPath, '\n',
    '> Entitlements:', opts.entitlements)
  return readFileAsync(opts.entitlements, 'utf8')
    .then(function (result) {
      entitlements = plist.parse(result)
      if (!entitlements['com.apple.security.app-sandbox']) {
        // Only automate when app sandbox enabled by user
        return
      }

      return readFileAsync(appInfoPath, 'utf8')
        .then(function (result) {
          appInfo = plist.parse(result)
          // Use ElectronTeamID in Info.plist if already specified
          if (appInfo.ElectronTeamID) {
            debuglog('`ElectronTeamID` found in `Info.plist`: ' + appInfo.ElectronTeamID)
          } else {
            // The team identifier in signing identity should not be trusted
            if (opts['provisioning-profile']) {
              appInfo.ElectronTeamID = opts['provisioning-profile'].message.Entitlements['com.apple.developer.team-identifier']
              debuglog('`ElectronTeamID` not found in `Info.plist`, use parsed from provisioning profile: ' + appInfo.ElectronTeamID)
            } else {
              appInfo.ElectronTeamID = opts.identity.name.substring(opts.identity.name.indexOf('(') + 1, opts.identity.name.lastIndexOf(')'))
              debuglog('`ElectronTeamID` not found in `Info.plist`, use parsed from signing identity: ' + appInfo.ElectronTeamID)
            }
            return writeFileAsync(appInfoPath, plist.build(appInfo), 'utf8')
              .then(function () {
                debuglog('Entitlements file updated:', '\n',
                  '> Info.plist:', appInfoPath)
              })
          }
        })
        .then(function () {
          var appIdentifier = appInfo.ElectronTeamID + '.' + appInfo.CFBundleIdentifier
          // Insert application identifier if not exists
          if (entitlements['com.apple.application-identifier']) {
            debuglog('`com.apple.application-identifier` found in entitlements file: ' + entitlements['com.apple.application-identifier'])
          } else {
            debuglog('`com.apple.application-identifier` not found in entitlements file, new inserted: ' + appIdentifier)
            entitlements['com.apple.application-identifier'] = appIdentifier
          }
          // Insert developer team identifier if not exists
          if (entitlements['com.apple.developer.team-identifier']) {
            debuglog('`com.apple.developer.team-identifier` found in entitlements file: ' + entitlements['com.apple.developer.team-identifier'])
          } else {
            debuglog('`com.apple.developer.team-identifier` not found in entitlements file, new inserted: ' + appInfo.ElectronTeamID)
            entitlements['com.apple.developer.team-identifier'] = appInfo.ElectronTeamID
          }
          // Init entitlements app group key to array if not exists
          if (!entitlements['com.apple.security.application-groups']) {
            entitlements['com.apple.security.application-groups'] = []
          }
          // Insert app group if not exists
          if (entitlements['com.apple.security.application-groups'].indexOf(appIdentifier) === -1) {
            debuglog('`com.apple.security.application-groups` not found in entitlements file, new inserted: ' + appIdentifier)
            entitlements['com.apple.security.application-groups'].push(appIdentifier)
          } else {
            debuglog('`com.apple.security.application-groups` found in entitlements file: ' + appIdentifier)
          }
          // Create temporary entitlements file
          const entitlementsPath = path.join(os.tmpdir(), `tmp-entitlements-${process.pid.toString(16)}-${(tmpFileCounter++).toString(16)}.plist`)
          opts.entitlements = entitlementsPath
          return writeFileAsync(entitlementsPath, plist.build(entitlements), 'utf8')
            .then(function () {
              debuglog('Entitlements file updated:', '\n',
                '> Entitlements:', entitlementsPath)
            })
        })
    })
}

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