local self = {}

local tooltipwidth = 0
local tooltipx = 0
local tooltipy = 0

local tooltipopen = false
local tooltiptext = ''
local tooltiptargetwidth = 0

local tooltipframe = false

function self.update(dt)
  local mx, my = love.mouse.getPosition()
  tooltipx = mix(tooltipx, mx, dt * 14)
  tooltipy = mix(tooltipy, my, dt * 14)

  tooltipwidth = mix(tooltipwidth, tooltiptargetwidth, dt * 12)
end

function self.prerender()
  tooltipframe = false
end

function self.show(text)
  tooltipframe = true
  tooltiptext = text
  tooltiptargetwidth = love.graphics.newText(love.graphics.getFont(), text):getWidth()
end

function self.render()
  local mx, my = love.mouse.getPosition()
  if not tooltipframe then
    tooltiptargetwidth = 0
  end

  if tooltipwidth > 1 then
    local a = math.min((tooltipwidth - 1) / 6, 1)

    love.graphics.push()

    love.graphics.translate(mx + 16, my + 16)

    love.graphics.setColor(0.2, 0.2, 0.3, a)
    love.graphics.rectangle('fill', 0, 0, tooltipwidth + 4 + margin, fontHeight + margin)

    love.graphics.setScissor(0, 0, mx + tooltipwidth + 2 + margin/2 + 16, love.graphics.getHeight())

    love.graphics.setColor(1, 1, 1, 1)
    love.graphics.print(tooltiptext, 2 + margin/2, 2 + margin/2)

    love.graphics.setScissor()

    love.graphics.pop()
  end
end

return self