-- Captures data from electric meter
module(...,package.seeall)

require ('xap')
require('xap.bsc')

info={
   version="1.0", description="Electric meter totaliser"
}
--meter sends rf package every 5 ticks and 1000 ticks = 1 Kilowatt
local TotalElectric=0     -- Cumulative meter reading
local TotalElectricBSC


function leccyRead()
   local file = io.open("/etc/plugboard/PortLeccy","r")
   TotalElectric = file:read("*all")
   file:close()
   return tonumber(TotalElectric)
end

function leccyUpdate(frame)
  local ECount =frame:getValue("input.state","text")
--print("test")
--print(ECount)

  TotalElectric = tonumber(TotalElectric) + tonumber(ECount)
  file = io.open("/etc/plugboard/PortLeccy","w+")
  file:write(tostring(TotalElectric))
  file:close()
   
   -- Update the BSC endpoint and send Event
 TotalElectricBSC:setText(TotalElectric)
 TotalElectricBSC:setText(tostring(ECount))
   TotalElectricBSC:sendEvent()
end

function init()
   local f = xap.Filter()
 -- f:add("xap-header", "source", "dbzoo.livebox.jeenode:leccy.watts")
 f:add("xap-header","source", "dbzoo.livebox.Controller:1wire.1")
   f:add("xap-header","class","xAPBSC.event")
  --  f:add("command","text",xap.FILTER_ANY)

   f:callback(leccyUpdate)

   -- On Applet restart load last value
   TotalElectric = leccyRead()
   -- Expose the current value as a BSC endpoint so we can push this to Pachube and monitor it.
   TotalElectricBSC = bsc.Endpoint{source="dbzoo.livebox.jeenode:leccy.total", direction=bsc.OUTPUT, type=bsc.STREAM}

   TotalElectricBSC:setText(tostring(TotalElectric))
end