tankListener.lua

vos.loadApi('core.api')
vos.loadApi('relay.api')

local config = Util.readTable('.tankListener')

Relay.find()

local active = false

local function setActive(active)
  local iactive = active
  if config.inverse then
    iactive = not active
  end
  if iactive ~= rs.getOutput(config.side) then
    print('setting output to ' .. tostring(active))
    rs.setOutput(config.side, iactive)
  end
  Relay.send('panelUpdate', {
    uid = config.uid,
    text = config.text,
    type = 'radio',
    active = active,
  })
end

Message.addHandler('tankInfo', function(h, id, msg)
  local tank = msg.contents
  active = tank.amount / tank.capacity * 100 < config.limit
  printf('%s: %d%%', config.tankName, math.floor(tank.amount / tank.capacity * 100))
  setActive(active)
end)

Event.addHandler('heartbeat', function()
  Relay.send('getTankInfo', {
    name = config.tankName
  })
end)

Logger.disable()
os.queueEvent('heartbeat')
Event.heartbeat(30)