# @name    LED Ticker
# @desc    A simple and customizable LED ticker for AWTRIX NG
# @version 1.1

# @config message text "Text" default="BR4ND LED TICKER" maxlen=256
# @config scrolling bool "Scrolling" default=true
# @config font select "Font size" default=small options=small,large
# @config colorMode select "Color mode" default=solid options=solid,rainbow,blink,fade
# @config color color "Text color" default=#FFFFFF
# @config background color "Background color" default=#000000
# @config effectSpeed number "Effect speed" default=1000 min=100 max=5000 unit=ms
# @config speed number "Scroll speed" default=100 min=0 max=300 unit=%
# @config direction select "Direction" default=left options=left,right
# @config scrollMode select "Scroll mode" default=loop options=static,wrap,loop,bounce
# @config gap number "Gap" default=8 min=0 max=32 unit=px
# @config hold number "Pause" default=1000 min=0 max=5000 unit=ms

class LEDTicker

  var message
  var scrolling
  var fontName
  var colorMode
  var color
  var background
  var effectSpeed
  var speed
  var direction
  var scrollMode
  var gap
  var hold
  var rainbow

  def init()

    self.message = store.get("message")
    self.scrolling = store.get("scrolling")
    self.fontName = store.get("font")
    self.colorMode = store.get("colorMode")
    self.color = store.get("color")
    self.background = store.get("background")
    self.effectSpeed = store.get("effectSpeed")
    self.speed = store.get("speed")
    self.direction = store.get("direction")
    self.scrollMode = store.get("scrollMode")
    self.gap = store.get("gap")
    self.hold = store.get("hold")

    self.rainbow = []

    var length = size(self.message)

    if length > 0
      for i : 0 .. length - 1
        var hue = (i * 360) / length
        self.rainbow.push([self.message[i], hsv(hue, 100, 70)])
      end
    end

  end

  def blinkColor()

    var period = self.effectSpeed

    if period <= 0
      return self.color
    end

    var phase = now_ms() % period

    if phase < (period / 2)
      return 0x000000
    end

    return self.color

  end

  def fadeColor()

    var period = self.effectSpeed

    if period <= 0
      return self.color
    end

    var phase = now_ms() % period
    var brightness

    if phase < (period / 2)
      brightness = (phase * 255) / (period / 2)
    else
      brightness = ((period - phase) * 255) / (period / 2)
    end

    if brightness < 0
      brightness = 0
    end

    if brightness > 255
      brightness = 255
    end

    var r = (self.color >> 16) & 255
    var g = (self.color >> 8) & 255
    var b = self.color & 255

    var rr = (r * brightness) / 255
    var gg = (g * brightness) / 255
    var bb = (b * brightness) / 255

    return rgb(rr, gg, bb)

  end

  def draw()

    clear(self.background)
    font(self.fontName)

    var mode = self.scrollMode

    if !self.scrolling
      mode = "static"
    end

    var opts = {
      "mode": mode,
      "direction": self.direction,
      "entry": "offscreen",
      "whenFits": "static",
      "speed": self.speed,
      "gap": self.gap,
      "holdMs": self.hold
    }

    if self.colorMode == "rainbow"

      scroll_text(
        self.rainbow,
        0xFFFFFF,
        opts
      )

    elif self.colorMode == "blink"

      scroll_text(
        self.message,
        self.blinkColor(),
        opts
      )

    elif self.colorMode == "fade"

      scroll_text(
        self.message,
        self.fadeColor(),
        opts
      )

    else

      scroll_text(
        self.message,
        self.color,
        opts
      )

    end

  end

end

return LEDTicker()