Script Guidance - Auto / On / Off, Lux Condition

[JMemphix]

Hi,

Looking to script a setup that includes the following, any guidance appreciated...

Mode 0/0/1 -> Off (0) / Auto (127) / On (255) group address (with level noted in brackets).
Lux 0/0/2 -> from brightness sensor.
Setpoint 0/0/3 -> group address set via LM interface.
Output or Lights 0/0/4 -> group address for relay or dimmer etc.
Delay in seconds -> variable set above script.

Function/Script:

When Mode at 'Off' level (0), turn Output Off.

When Mode at 'Auto' level (127) it contentiously loops with comparing Setpoint to Lux group address... 
  When Lux below Setpoint, Output group immediately On if Output currently Off.
  When Lux above Setpoint, after a Delay if Setpoint continues to stay above Lux, Output group Off if Output currently On.

When Mode at 'On' level (255), turn Output On.

Thank you