local meControllerSide = 'top'
local meInterfaceSide = 'back'


-- Install the F library if not present.
if fs.exists('lib/f') == false then
	fs.makeDir("lib") lib = http.get("https://raw.githubusercontent.com/acidjazz/drmon/master/lib/f.lua") libFile = lib.readAll() local file1 = fs.open("lib/f", "w") file1.write(libFile) file1.close()
end

os.loadAPI("lib/f")

--monitor
local mon, monitor, monX, monY
--peripherals
local meController = peripheral.wrap(meControllerSide)
local meInterface = peripheral.wrap(meInterfaceSide)

--vars
params = {meController = meController, meInterface = meInterface}


if meInterface == null then
	error("No valid ME Interface was found on " .. meControllerSide .. " of computer.")
end

if meController == null then
	error("No valid ME Controller was found on ".. meInterfaceSide .." of computer. ")
end

if monitor == null then
	error("No valid monitor was found")
end

monitor.setTextScale(0.99)

monX, monY = monitor.getSize()
mon = {}
mon.monitor,mon.X, mon.Y = monitor, monX, monY


function showTabMenu(mon, currentTab)
	local y = 0
	local tabs = {Monitor=1,Details=11,Edit=21}
	for k,v in pairs(tabs) do
		if k == currentTab then
			f.draw_text(mon, v, y, '[' .. k .. ']', colors.white, colors.purple)
		else
			f.draw_text(mon, v, y, '[' .. k .. ']', colors.white, colors.gray)
		end
	end
end

function switchToTab(mon, tab, params)
	--erase screen, go to the main tab.
	f.clear(mon)
	showTabMenu(mon, tab);


end

function monitorTab(mon, params)
	print('Monitor general status')
	print ('Busy CPUs: ' .. getBusyCPUs(params.meController);)
	print ('Total CPUs: ' .. #params.meController.getCraftingCPUs())
	--[[

[Monitor] [Details] [Edit]
Monitor general crafting.


Num total crafting jobs: 7
Num computer jobs: 6

Crafting requested:
64k ME storage
Energetic Alloy
and 4 others.


]]--

end

function getBusyCPUs(meController)
	local cpus = meController.getCraftingCPUs()
	local busy = 0;
	for cpu in ipairs(cpus) do
		if cpu.busy == true then
			busy++
		end
	end
	return busy
end

function drawButtons(y)

  -- 2-4 = -1000, 6-9 = -10000, 10-12,8 = -100000
  -- 17-19 = +1000, 21-23 = +10000, 25-27 = +100000

  f.draw_text(mon, 2, y, " < ", colors.white, colors.gray)
  f.draw_text(mon, 6, y, " <<", colors.white, colors.gray)
  f.draw_text(mon, 10, y, "<<<", colors.white, colors.gray)

  f.draw_text(mon, 17, y, ">>>", colors.white, colors.gray)
  f.draw_text(mon, 21, y, ">> ", colors.white, colors.gray)
  f.draw_text(mon, 25, y, " > ", colors.white, colors.gray)
end





--Program actually starts here.

switchToTab(mon, 'Monitor', {})







--[[
[Monitor] [Details] [Edit]
Monitor general crafting.


Num total crafting jobs: 7
Num computer jobs: 6

Crafting requested:
64k ME storage
Energetic Alloy
and 4 others.


--============================

[Monitor] [Details] [Edit]
Detailed Crafting breakdown

Crafting Requested (Have / Want):
64k ME storage 5 / 64
Energetic Alloy 64 / 256
Steel Ingot 60 / 64
...
...

--============================
[Monitor] [Details] [Edit]
Edit preferred stock levels.


Recipe:
64k ME Storage
Have: 5
Want: 0
Less    -    More
<<< << < > >> >>>
[Prev]     [Next]

]]--


-- What if there are no crafting CPUs free?
-- What if there are not enough materials?
-- What if the job is already running?
-- What if the ME system runs out of power?
-- What if