# @name    Clock Temp
# @desc    Clock, outdoor Fahrenheit temperature and indoor/outdoor differential
# @author  Duv McIntyre
# @version 1.1
# @config ha_topic text "Home Assistant MQTT topic" default="homeassistant/wunderground/state" maxlen=96
# @config celsius bool "Use Celsius" default=false

class ClockTemp
  var outdoor, indoor, diff, condition, celsius

  def init()
    self.outdoor = nil
    self.indoor = nil
    self.diff = nil
    self.condition = "unknown"
    self.celsius = store.get("celsius")
  end

  def set_weather(payload)
    if payload == nil return end
    var m = re.search("\"temp\"\\s*:\\s*([-0-9.]+)", payload)
    if m == nil return end
    var t = num(m[1])
    if t == nil return end
    if self.celsius t = (t - 32) / 1.8 end
    self.outdoor = t
    if self.indoor != nil self.diff = t - self.indoor end
    var cm = re.search("\"cond\"\\s*:\\s*\"([^\"]+)\"", payload)
    if cm != nil self.condition = cm[1] end
  end

  def setup()
    mqtt.subscribe(store.get("ha_topic"), def (topic, payload)
      self.set_weather(payload)
    end)
  end

  def loop()
    var c = sensor.temperature()
    if c != nil
      self.indoor = self.celsius ? c : c * 1.8 + 32
      if self.outdoor != nil self.diff = self.outdoor - self.indoor end
    end
  end

  def diff_color(v)
    var d = v < 0 ? -v : v
    var ten = self.celsius ? 10 / 1.8 : 10
    var twenty = self.celsius ? 20 / 1.8 : 20
    if d <= ten return rgb(int(d * 255 / ten), 255, 0) end
    if d <= twenty return rgb(255, int(255 - (d - ten) * 127 / ten), 0) end
    return rgb(255, int(128 - (d - twenty) * 128 / ten), 0)
  end

  def draw_condition()
    var c = self.condition
    var ox = width() - 5
    var col = c == "sunny" || c == "clear-night" ? 0xFFFF00 : 0x66CCFF
    if c == "sunny" || c == "clear-night"
      circle(ox + 2, 2, 1, col)
      pixel(ox + 2, 0, col)
      pixel(ox + 2, 4, col)
      pixel(ox, 2, col)
      pixel(ox + 4, 2, col)
      return
    end
    if c == "lightning" || c == "lightning-rainy"
      rect_fill(ox, 1, 4, 2, 0xAAAAAA)
      pixel(ox + 2, 3, 0xFFFF00)
      pixel(ox + 1, 4, 0xFFFF00)
      pixel(ox + 3, 3, 0xFFFF00)
      return
    end
    rect_fill(ox, 2, 5, 2, col)
    pixel(ox + 1, 1, col)
    pixel(ox + 2, 0, col)
    pixel(ox + 3, 1, col)
    if c == "rainy" || c == "pouring"
      pixel(ox + 1, 4, 0x3399FF)
      pixel(ox + 3, 4, 0x3399FF)
    elif c == "snowy" || c == "snowy-rainy" || c == "hail"
      pixel(ox + 1, 4, 0xFFFFFF)
      pixel(ox + 3, 4, 0xFFFFFF)
    end
  end

  def draw()
    clear()
    var h = hour()
    var m = minute()
    var mm = m < 10 ? "0" + str(m) : str(m)
    var s = str(h) + ":" + mm
    if self.outdoor != nil s = s + " " + str(int(round(self.outdoor))) + (self.celsius ? "C" : "F") end
    self.draw_condition()
    text(0, 6, s, settings.get("textColor"))

    var x = 0
    while x < width()
      pixel(x, height() - 1, 0x202020)
      x += 1
    end
    if self.diff != nil
      var limit = self.celsius ? 30 / 1.8 : 30
      var p = int(round((clamp(self.diff, -limit, limit) + limit) * (width() - 1) / (limit * 2)))
      var center = int(round((width() - 1) / 2.0))
      var start = p < center ? p : center
      var finish = p < center ? center : p
      x = start
      while x <= finish
        var span = p == center ? 0 : (x - center) * self.diff / (p - center)
        pixel(x, height() - 1, self.diff_color(span))
        x += 1
      end
    end
  end
end

return ClockTemp()