// ===================================================================
// Contains many common helpers.
// ===================================================================

// Load by default a window in the ui/views folder.
// If options.isString is equals to true, a marshalling component can
// be used.
//
// Supported options: isString, exitHandler.
//
// If exitHandler is used, window must implement exitStatus signal.
function openWindow (window, parent, options) {
  var object

  if (options && options.isString) {
    object = Qt.createQmlObject(window, parent)
  } else {
    var component = Qt.createComponent(
      'qrc:/ui/views/' + window + '.qml'
    )

    if (component.status !== Component.Ready) {
      console.debug('Window not ready.')
      if(component.status === Component.Error) {
        console.debug('Error:' + component.errorString())
      }
      return // Error.
    }

    object = component.createObject(parent)
  }

  console.debug('Open window.')

  object.closing.connect(function () {
    console.debug('Destroy window.')
    object.destroy()
  })
  object.exitStatus.connect(function (status) {
    console.debug('Exit status: ' + status)
  })

  if (options && options.exitHandler) {
    object.exitStatus.connect(
      // Bind to access parent properties.
      options.exitHandler.bind(parent)
    )
  }

  object.show()
}

// -------------------------------------------------------------------

// Display a simple ConfirmDialog component.
// Wrap the openWindow function.
function openConfirmDialog (parent, options) {
  openWindow(
    'import QtQuick 2.7;' +
      'import \'qrc:/ui/modules/Linphone/Dialog\';' +
      'ConfirmDialog {' +
      'descriptionText: \'' + options.descriptionText + '\';' +
      'title: \'' + options.title + '\'' +
      '}',
    parent, {
      isString: true,
      exitHandler: options.exitHandler
    }
  )
}

// -------------------------------------------------------------------

function snakeToCamel (s) {
  return s.replace(/(\_\w)/g, function (matches) {
    return matches[1].toUpperCase()
  })
}

// -------------------------------------------------------------------

function Timer (parent) {
  return Qt.createQmlObject('import QtQuick 2.7; Timer { }', parent)
}

// A copy of `Window.setTimeout` from js.
// Use setTimeout.call(parentContext, delayTime, cb) to use it.
//
// delay is in milliseconds.
function setTimeout (delay, cb) {
  var timer = new Timer(this)

  timer.interval = delay
  timer.repeat = false
  timer.triggered.connect(cb)
  timer.start()

  return timer
}

function clearTimeout (timer) {
  timer.destroy() // Not necessary: `timer.stop()`
}