function dump(t, level)
        level = level or 0
        for i,v in pairs(t) do
                io.write(string.rep('  ', level))
                io.write(i..': ')
                if type(v) == 'table' then
                        print ''
                        dump(v, level + 1)
                else
                        print(tostring(v))
                end
        end
end

antenna = peripheral.wrap("left")
players = antenna.getPlayers()
hud = antenna.getHUD(players[1])
gui = hud.getGUI()
resX,resY = hud.getResolution()

interface = peripheral.wrap("bottom")
interface.setOutputSide("north")
interface.setInputSide("north")
s = interface.getAllStacks()

function itemList(items, gui)
  for i,v in pairs(items) do
    x = math.floor(i/20)*(resX*1/4)
    y = 1+(i%20)*22
    --id,x,y,width,height,text
    gui.addButton(5+i,1+x,y,#v.data.displayName*7,20,v.data.displayName)
  end
end

function getItems()
  targetItems = {}
  inc = 0
  for i=0,targetInv.getSize()-1,1 do
    stack = targetInv.getStackInSlot(i)
    if(stack ~= nil) then
      itemData = {}
      itemData["data"] = stack
      itemData["index"] = i
      targetItems[inc] = itemData
      inc = inc+1
    end
  end
end

players = {}
function playerSelection(interface, gui)
  cards = interface.getAllStacks()
  for i,v in pairs(cards) do
	cardData = v.all()
	playerName = cardData.display_name
	index = string.find(playerName, "-")+2
	playerName = string.sub(playerName, index)
	players[i] = playerName
	gui.addButton(i,1,1+(i-1)*22,#playerName*7,20,playerName)
  end
end

invToggle = false
targetInv = nil
depoInv = nil
targetItems = {}
selected = -1
while true do
  event = {os.pullEvent()}
  if(event[1] == "keyInput") then
    if(event[3] == 74 and event[4]) then
      gui.clear()
      playerSelection(interface, gui)
      gui.add()
      gui.open()
    end
  elseif(event[1] == "buttonClicked") then
    if(event[3] < 5) then
      if(event[3] == 0) then
        invIndex = targetItems[selected].index
        targetInv.retrieveFromSlot(invIndex,1)
        userInv.push(0,64)
      elseif(event[3] >= 1) then
        if(not invToggle) then
          gui.clear()
          targetInv = interface.getPlayerInv(players[event[3]])
          getItems()
          itemList(targetItems, gui)
          gui.add()
          gui.open()
        else
          depoInv = interface.getPlayerInv(players[event[3]])
        end
      end
    else
      selected = event[3]-5
      item = targetItems[selected].data
      inc = 0
      gui.clear()
      for k,v in pairs(item) do
        gui.drawString(k..": "..v,resX/2,1+inc*16)
        inc = inc+1
      end
      itemList(targetItems,gui)
      gui.addButton(0,resX/2,resY/2,#"Take"*10,20,"Take")
      gui.add()
      gui.open()
    end
  end
end