#include "LedControl.h"

class LedAnimation
{
public:
  /// Sets leds in the strip and returns number of milliseconds to wait until it is called again
  virtual int operator()(LedStrip &leds) = 0;
};

class SweepCircularAnimation : public LedAnimation
{
public:
  SweepCircularAnimation(const ColorRGB &color, int delayMs = 100, int numLedsHalfWidth = 3, float brightnessFallOff = 0.8)
      : color_(color), delayMs_(delayMs), numLedsHalfWidth_(numLedsHalfWidth), brightnessFallOff_(brightnessFallOff), currentCenter_(0)
  {
  }

  int operator()(LedStrip &leds) override
  {
    for (int i = 0; i < leds.numLeds(); ++i)
      leds.setColor(i, 0, 0, 0, 0);

    leds.setColor(currentCenter_, color_);

    ColorRGB currColor = color_;
    for (int i = 1; i <= numLedsHalfWidth_; ++i)
    {
      currColor.r = uint8_t(float(currColor.r) * brightnessFallOff_);
      currColor.g = uint8_t(float(currColor.g) * brightnessFallOff_);
      currColor.b = uint8_t(float(currColor.b) * brightnessFallOff_);
      leds.setColor(leds.normalizeLedIdx(currentCenter_ - i), currColor);
      leds.setColor(leds.normalizeLedIdx(currentCenter_ + i), currColor);
    }
    currentCenter_ = leds.normalizeLedIdx(currentCenter_ + 1);
    return delayMs_;
  }

private:
  // parameters
  ColorRGB color_;
  int delayMs_;
  int numLedsHalfWidth_; // number of leds on to the left and right of center
  float brightnessFallOff_;

  // state
  int currentCenter_;
};

// strategy:
//  use queue to send animation pointers over
//  task calls animate function and waits for new even in queue with timeout of next due call
//

void setAnimation(LedAnimation *animation)
{
}