local nStartTime = os.clock()

os.loadAPI("fmt")
os.loadAPI("sevseg")
os.loadAPI("countAPI")

term.redirect(peripheral.find("monitor"))

local pEntity = peripheral.find("EntityDetector")

term.setBackgroundColor(colors.lightGray)
term.clear()

local monX, monY = term.getSize()

paintutils.drawLine(1, 1, monX, 1, colors.gray)
term.setCursorPos(1, 1)
term.write("TheWitch Dashboard")

paintutils.drawFilledBox(1, 2, 13, monY, colors.lightBlue)

term.setBackgroundColor(colors.lightGray)
term.setTextColor(colors.gray)

term.setCursorPos(15, 3)
term.write("Total")

term.setCursorPos(15, 6)
term.write("Uptime")

term.setCursorPos(15, 9)
term.write("Average")

term.setTextColor(colors.white)

local nWitchCount = 0
local sWitchCount = ""
local nTotalWitchCount = 0
local nOldWitchCount = 0
local nUptime = 0
local nUptimeMin = 0
local nAvgWitch = 0

local function round(val, decimal)
  if (decimal) then
    return math.floor( (val * 10^decimal) + 0.5) / (10^decimal)
  else
    return math.floor(val+0.5)
  end
end

local function main()
  while true do
    nOldWitchCount = nWitchCount

    nWitchCount = countAPI.getEntityCount(20, 3170, 68, 1188, "EntityWitch")
    sWitchCount = string.format("%02d", nWitchCount)

    sevseg.drawSevenSeg(tonumber(sWitchCount:sub(1, 1)), 2, 3, 3)
    sevseg.drawSevenSeg(tonumber(sWitchCount:sub(2, 2)), 9, 5, 2)

    if nWitchCount > nOldWitchCount then
      nTotalWitchCount = nTotalWitchCount + (nWitchCount - nOldWitchCount)
    end

    nAvgWitch = nTotalWitchCount / nUptimeMin

    term.setBackgroundColor(colors.lightGray)
    term.setCursorPos(15, 4)
    term.write(tostring(nTotalWitchCount))

    term.setCursorPos(15, 7)
    term.write(fmt.formatSeconds(nUptime))

    term.setCursorPos(15, 10)
    term.write(tostring(round(nAvgWitch, 2)).." witch/min        ")

    sleep(0.5)
  end
end

local function uptimer()
  while true do
    nUptime = os.clock() - nStartTime
    nUptimeMin = math.floor(nUptime /  60) + 1

    sleep(0.3)
  end
end

parallel.waitForAll(main, uptimer)