component = require("component")
gui = require("gui")
event = require("event")
m = component.modem

nics = {}
ic = {"56c", "616", "8f3", "2ce"}
mc = {"ed0", "d76", "c27", "22b"}

function unknownEvent()
 -- do nothing if the event wasn't relevant
end
 -- table that holds all event handlers
 -- in case no match can be found returns the dummy function unknownEvent
myEventHandlers = setmetatable({}, { __index = function() return unknownEvent end })

-- The main event handler as function to separate eventID from the remaining arguments
function handleEvent(eventID, ...)
  if (eventID) then -- can be nil if no event was pulled for some time
    myEventHandlers[eventID](...) -- call the appropriate event handler with all remaining arguments
  end
end

function myEventHandlers.modem_message(localAddress, remoteAddress, port, distance, id,  message)
  id = text.trim(id)
  if message == "MC id" then
	nics[id] = remoteAddress
  end
  gui.insertList(mainGui, list_msg, "Message from " .. id .. ": " .. tostring(message))
end

function exitButtonCallback(guiID, id)
   local result = gui.getYesNo("", "Do you really want to exit?", "")
   if result == true then
      gui.exit()
   end
   gui.displayGui(mainGui)
   refresh()
end

function startReactor(i)
	p = component.proxy(component.get(mc[i]))
	if p.isRunning() ~= true then
		p.start()
	end
	m.send(nics["Reactor " .. i], 100, "on")
end

function stopReactor(i)
	m.send(nics["Reactor " .. i], 100, "off")
	p = component.proxy(component.get(mc[i]))
	p.stop()
end

function list_msg_callback(guiID, listID, selected, text)
end

-- Begin: Menu definitions
mainGui = gui.newGui(1, 2, 159, 48, true)
list_msg = gui.newList(mainGui, 1, 45, 157, 4, {}, list_msg_callback, list_msg)
exitButton = gui.newButton(mainGui, 73, 23, "exit", exitButtonCallback)
-- End: Menu definitions

gui.clearScreen()
gui.setTop("IC2 Reactor Control")
gui.setBottom("")

m.open(200)
m.broadcast(100, "id")

-- Main loop
while true do
   gui.runGui(mainGui)
   handleEvent(event.pull(0.1, "modem"))
end