glass = peripheral.wrap("bottom")

rednet.open( "back" )

-- Constants
pos_x = 40
pos_y = 55
pos_inc = 10
local color = {}
color["on"] = "0x2290000"
color["off"] = "0xFF0000"

-- Devices
local devices = { "Quarry" }

-- Device status
local status = {}
for i, device in ipairs( devices ) do
  status[device] = glass.addText( pos_x, pos_y, device, status["off"] )
  pos_y = pos_y + pos_inc
end

while true do
  local command = ""
  local device = ""
  local status = ""

  senderID, message, distance = rednet.receive()
  print( senderID .. ": " .. message )

  for i in string.gmatch( message,  "%S+" ) do
    if not command then
      command = i
    elseif not device then
      device = i
    else
      status = i
    end
  end

  status[device].setColor( color[status] )
end

rednet.close( "back" )