local stateMachineHelper = asset.require('util/state_machine_helper')

states = {
  {
    Title = "Highlight EarthTrail",
    Play = function ()
      openspace.setPropertyValue("Scene.EarthTrail.Renderable.LineWidth", 10, 1)
    end,
    Rewind = function ()
      openspace.setPropertyValue("Scene.EarthTrail.Renderable.LineWidth", 2, 1)
    end
  }, 
  {
    Title = "Highlight MarsTrail",
    Play = function ()
      openspace.setPropertyValue("Scene.EarthTrail.Renderable.LineWidth", 2, 1)
      openspace.setPropertyValue("Scene.MarsTrail.Renderable.LineWidth", 10, 1)
    end,
    Rewind = function ()
      openspace.setPropertyValue("Scene.MarsTrail.Renderable.LineWidth", 2, 1)
      openspace.setPropertyValue("Scene.EarthTrail.Renderable.LineWidth", 10, 1)
    end
  }
}

local stateMachine

function next() 
  stateMachine.goToNextState()
end

function previous()
  stateMachine.goToPreviousState()
end

asset.onInitialize(function ()
  stateMachine = stateMachineHelper.createStateMachine(states)
  openspace.bindKey('RIGHT', 'next()')
  openspace.bindKey('LEFT', 'previous()')
end)


asset.onDeinitialize(function ()
  stateMachine = nil
  openspace.clearKey('RIGHT')
  openspace.clearKey('LEFT')
end)