Can I return the function to know when it's done recording?

[Snodvod]

I want to record something of 30 seconds. In my ionic controller I call the RecordService where your API is used to record, everything works, but I want to return something to my controller once the success function is done... How can I do that?

SERVICE:

.service('RecordService', function (UsersModel, Backand, $cordovaMedia, $q, $cordovaFile, $state) {
    var service = this;

    service.record = function () {
      return window.plugins.audioRecorderAPI.record(function (savedFilePath) {
        var fileName = savedFilePath.split('/')[savedFilePath.split('/').length - 1];

        // Store filename in user object in database

        Backand.getUserDetails().then(function (result) {
          UsersModel.fetch(result.userId).then(function (user) {
            user.data.music = fileName;
            UsersModel.update(result.userId, user.data).then(function (updatedUser) {
              console.log(updatedUser);
              return savedFilePath;
            })
          }, function (error) {
            console.log(error);
          })
        }, function (error) {
          console.log(error);
        });
      }, function (error) {
        console.log("Kapot: " + msg);
        return error;
      }, 30);
    }
  })

CONTROLLER:

function record() {
      rec.recording = true;
      startTimer();
      RecordService.record() // Here do something like .then(function() {bla bla}) ?;
    }