example ctrl code

angular.module 'dokkurFrontend'
  .controller 'AppSettingsController', (
    $timeout
    $q
    $interval
    $state
    $scope
    $rootScope
    SEO
    dkSubscriberService
    AsyncAction
    dkInstancesService
    dkKeysService
    dkAppsService
    dkAppCreateService
    checkAuthAndGoTo
    userStore
    dkSignoutService
    dkGetAppService
    dkInstancePs
    dkConfirm
    dkPrompt
    dkAlert
    dkInstanceAppsCreate
    dkInstanceAppsDestroy
    dkAppDestroyService
    dkInstanceConfig
    dkInstanceConfigSetunset
    dkInstanceConfigUnsetWithoutRestart
    dkInstanceConfigSetWithoutRestart
    dkInstancePsRestart
  ) ->
    'ngInject'
    vm = this

    checkAuthAndGoTo 'app.settings', 'signin'
    vm.user = userStore.get()

    return if not vm.user

    $("body").scrollTop(0)

    # SEO section
    $rootScope.pageTitle = 'App Settings | Dokkur'
    $rootScope.pageDescription = ''
    $rootScope.pageKeywords = ''
    # end of SEO section

    vm.filterVariable = (variable) ->
      not variable.isDeleted

    vm.appName = $state.params.name


    vm.getConfigs = () ->
      vm.loading = true
      dkInstanceConfig(
        vm.instance
        vm.key
        vm.app.name
        (instanceData) ->
          vm.loading = false
          vm.configData = instanceData.data
          vm.variables = vm.configData.parsed_result.variables
          vm.editableVariables = angular.copy(vm.variables)
        (instanceErr) ->
          vm.loading = false
          dkAlert.show('Error!', 'Error while getting configs!', 'Got it!')
      )


    vm.loading = true

    dkGetAppService.get(
      { app_name: vm.appName }
      (data) ->
        vm.app = data.app
        vm.key = data.app.instance_id.keys_set[0]
        vm.instance = vm.app.instance_id
        vm.loading = false

        vm.getConfigs()
      (err) ->
        vm.loading = false
        checkAuthAndGoTo 'apps', 'signin'
    )

    vm.getGitUrl = (app) ->
      return if not app
      vm.user.username + '@' + app.instance_id.ip_hostname + ':' + app.name

    vm.confirmDelete = () ->
      dkPrompt.show(
        'Delete app'
        'Deleting your app is irreversible. Enter your app\'s name (' + vm.app.name + ') below to confirm you want to permanently delete it:'
        'Delete app'
        'Cancel'
        (enteredName) ->
          if (enteredName != vm.app.name)
            return dkAlert.show('Error!', 'Name mismatch!', 'Got it!')

          vm.deleteInProgress = true

          dkInstanceAppsDestroy(
            vm.instance
            vm.key
            vm.app.name
            (instanceData) ->

              dkAppDestroyService.save(
                {application_id: vm.app.id}
                (data) ->
                  checkAuthAndGoTo 'apps', 'signin'
                (err) ->
                  vm.deleteInProgress = false
                  dkAlert.show('Error!', 'Error while deleting the app!', 'Got it!')
              )

            (instanceErr) ->
              dkAlert.show('Error!', 'Error while deleting the app on instance!', 'Got it!')
          )

        () ->
          console.log("canceled")
      )

    vm.cancelVariablesEditing = () ->
      vm.editableVariables = angular.copy(vm.variables)
      vm.variablesEditMode = false

    vm.startVariablesEditing = () ->
      vm.variablesEditMode = true

    vm.addNewVariable = () ->
      vm.editableVariables.push({name: '', value: ''})

    vm.unsetVariables = []

    vm.removeVariable = (variable) ->
      inVarList = vm.variables.filter( (v) ->
        v.name == variable
      ).length > 0

      vm.unsetVariables.push(variable.name) if (vm.unsetVariables.indexOf(variable.name) < 0) and not inVarList
      vm.editableVariables = vm.editableVariables.filter (v) ->
        v != variable


    vm.unsetWithoutRestart = (successCallback, errorCallback) ->
      dkInstanceConfigUnsetWithoutRestart(
        vm.instance
        vm.key
        vm.app.name + ' ' + vm.unsetVariables.join(' ')
        successCallback
        errorCallback
      )

    vm.setWithoutRestart = (successCallback, errorCallback) ->
      configsString = ''
      for v in vm.editableVariables
        configsString = configsString + v.name + '=' + v.value + ' ' if v.name

      dkInstanceConfigSetWithoutRestart(
        vm.instance
        vm.key
        vm.app.name + ' ' + configsString
        successCallback
        errorCallback
      )

    vm.restartApp = (successCallback, errorCallback) ->
      dkInstancePsRestart(
        vm.instance
        vm.key
        vm.app.name
        () ->
          vm.loading = false
          dkAlert.show('Success!', '', 'Got it!')
        () ->
          vm.loading = false
          dkAlert.show('Warning!', 'Unable to restart app', 'Got it!')
      )

    vm.saveVariables = () ->
      vm.variablesEditMode = false
      vm.loading = true

      vm.setWithoutRestart(
        () ->
          if (vm.unsetVariables.length > 0)
            vm.unsetWithoutRestart(
              () ->
                vm.restartApp()
              () ->
                vm.restartApp()
            )
          else
            vm.restartApp()
        () ->
          if (vm.unsetVariables.length > 0)
            vm.unsetWithoutRestart(
              () ->
                vm.restartApp()
              () ->
                vm.restartApp()
            )
          else
            dkAlert.show('Error!', 'Unable to set variables', 'Got it!')
      )
    return