from native import app

serviceJS = """
def OnStart():
    i = 0
    def show_popup():
        nonlocal i
        app.ShowPopup(i)
        i += 1
    app.SetInterval(show_popup, 2000)

def OnMessage(msg):
    if msg == "fg":
        app.SetInForeground("My Service", "Service is running", "/Sys/Img/Hello.png", "/Sys/Img/Icon.png", "low")
    elif msg == "bg":
        app.SetInBackground()
"""

def OnStart():
    app.WriteFile("Service.js", serviceJS)

    lay = app.CreateLayout("linear", "VCenter,FillXY")

    tgl = app.CreateToggle("Foreground", 0.3, 0.1)

    def tgl_OnTouch(fg):
        if fg:
            svc.SendMessage("fg")
        else:
            svc.SendMessage("bg")

    tgl.SetOnTouch(tgl_OnTouch)
    lay.AddChild(tgl)

    app.AddLayout(lay)

    svc = app.CreateService("this", "this", OnSvcStart)