local event = require("event")
local component = require("component")
local Button = require("button")
local gpu = component.gpu
gpu.setResolution(160, 50)
-- gpu.setResolution(80,25)
local w, h = gpu.getResolution()
local backgroundColor = 0x696969
local s = {}
local buttons = {}

function fillBackground(color)
  gpu.setForeground(0x000000)
  gpu.setBackground(color)
  gpu.fill(1, 1, w, h, " ")
end

function calculateSize()
 s.buttonWidth = math.floor(w/3)
 s.buttonHeight = math.floor(h/5)
 s.buttonColumnGap = math.floor(w/8)
 s.buttonRowGap = math.floor(h/15)
end

--only on startup
function start()
  fillBackground(backgroundColor)
  calculateSize()
  table.insert(buttons, Button:new{x=s.buttonColumnGap, y=s.buttonRowGap, width=s.buttonWidth, height=s.buttonHeight,
    borderColor=0x4b4b4b, fillColor=0x5a5a5a, text="Gravel"}
  )
  table.insert(buttons, Button:new{x=s.buttonColumnGap, y=s.buttonRowGap*2+s.buttonHeight, width=s.buttonWidth, height=s.buttonHeight,
    borderColor=0xffff80, fillColor=0xffffc0, text="Sand"}
  )
  table.insert(buttons, Button:new{x=s.buttonColumnGap, y=s.buttonRowGap*3+s.buttonHeight*2, width=s.buttonWidth, height=s.buttonHeight,
    borderColor=0xffffc0, fillColor=0xf0f0f0, text="Dust"}
  )
  table.insert(buttons, Button:new{x=w-s.buttonColumnGap-s.buttonWidth, y=s.buttonRowGap, width=s.buttonWidth, height=s.buttonHeight,
    borderColor=0x330000, fillColor=0x332400, text="Soulsand"}
  )
  table.insert(buttons, Button:new{x=w-s.buttonColumnGap-s.buttonWidth, y=s.buttonRowGap*2+s.buttonHeight, height=s.buttonHeight,
    borderColor=0x660000, fillColor=0x990000, text="Netherrack"}
  )
  table.insert(buttons, Button:new{x=w-s.buttonColumnGap-s.buttonWidth, y=s.buttonRowGap*3+s.buttonHeight*2, height=s.buttonHeight,
    borderColor=0xccc0ff, fillColor=0xccc0db, text="Endstone"}
  )

  for i = 1, #buttons do
    buttons[i]:draw()
  end
end

--actions when running
function update()
  repeat
    local ev, _, x, y, user = event.pull()
    if ev == "touch" then

      print(buttons[1]:checkClick(x, y))
    end
  until false
end


start()
update()