Sorting System (part1)

p = peripheral.wrap("back") -- Change side as needed.
rednet.open("left") -- Change side as needed.

-- Variables that you have to set.

item = "cobble" -- Item that is in your storage media.
lower = 1 -- Computer id for exracting computer.


-- First startup

if not fs.exists("itemlist") then
  h = fs.open("itemlist", "w")
  h.write("0")
  h.close()
end


-- Retreives number of items in storage.

f = fs.open("itemlist", "r")
count = f.readAll()
count = tonumber(count)
f.close()


-- Adds to number of items in storgae.

function3 = function()
  f = fs.open("itemlist", "w")
  f.writeLine(tostring(count))
  f.close()
end


-- The function for sorting the item

function2 = function()
  event, id, amount = os.pullEvent("isort_item")

  count = count + amount

  function3()

  p.sort(0)
end


-- The function for updating the monitor.

function1 = function()
  sender, msg = rednet.receive()
    if msg == "update" then
      rednet.send(sender, item..": "..tostring(count))
    else if sender == lower then
            count = count - msg
            function3()
            print(count.." remaining")
         end
    end
end


-- Main running code.

while true do

  parallel.waitForAny(function1, function2)

/* For anyone who does not know this function
allows for two or more functions to run at once */

end