import CubicBezier from 'cubic-bezier-easing';
import connect from '../objects/connect';

const Easing = {
  linear: new CubicBezier(0, 0, 1, 1, 'linear'),
  easingSinusoidalIn: new CubicBezier(0.47, 0, 0.745, 0.715, 'easingSinusoidalIn'),
  easingSinusoidalOut: new CubicBezier(0.39, 0.575, 0.565, 1, 'easingSinusoidalOut'),
  easingSinusoidalInOut: new CubicBezier(0.445, 0.05, 0.55, 0.95, 'easingSinusoidalInOut'),

  easingQuadraticIn: new CubicBezier(0.550, 0.085, 0.680, 0.530, 'easingQuadraticIn'),
  easingQuadraticOut: new CubicBezier(0.250, 0.460, 0.450, 0.940, 'easingQuadraticOut'),
  easingQuadraticInOut: new CubicBezier(0.455, 0.030, 0.515, 0.955, 'easingQuadraticInOut'),

  easingCubicIn: new CubicBezier(0.55, 0.055, 0.675, 0.19, 'easingCubicIn'),
  easingCubicOut: new CubicBezier(0.215, 0.61, 0.355, 1, 'easingCubicOut'),
  easingCubicInOut: new CubicBezier(0.645, 0.045, 0.355, 1, 'easingCubicInOut'),

  easingQuarticIn: new CubicBezier(0.895, 0.03, 0.685, 0.22, 'easingQuarticIn'),
  easingQuarticOut: new CubicBezier(0.165, 0.84, 0.44, 1, 'easingQuarticOut'),
  easingQuarticInOut: new CubicBezier(0.77, 0, 0.175, 1, 'easingQuarticInOut'),

  easingQuinticIn: new CubicBezier(0.755, 0.05, 0.855, 0.06, 'easingQuinticIn'),
  easingQuinticOut: new CubicBezier(0.23, 1, 0.32, 1, 'easingQuinticOut'),
  easingQuinticInOut: new CubicBezier(0.86, 0, 0.07, 1, 'easingQuinticInOut'),

  easingExponentialIn: new CubicBezier(0.95, 0.05, 0.795, 0.035, 'easingExponentialIn'),
  easingExponentialOut: new CubicBezier(0.19, 1, 0.22, 1, 'easingExponentialOut'),
  easingExponentialInOut: new CubicBezier(1, 0, 0, 1, 'easingExponentialInOut'),

  easingCircularIn: new CubicBezier(0.6, 0.04, 0.98, 0.335, 'easingCircularIn'),
  easingCircularOut: new CubicBezier(0.075, 0.82, 0.165, 1, 'easingCircularOut'),
  easingCircularInOut: new CubicBezier(0.785, 0.135, 0.15, 0.86, 'easingCircularInOut'),

  easingBackIn: new CubicBezier(0.6, -0.28, 0.735, 0.045, 'easingBackIn'),
  easingBackOut: new CubicBezier(0.175, 0.885, 0.32, 1.275, 'easingBackOut'),
  easingBackInOut: new CubicBezier(0.68, -0.55, 0.265, 1.55, 'easingBackInOut'),
};

/**
 * Returns a valid `easingFunction`.
 *
 * @param {KUTE.easingFunction | string} fn function name or constructor name
 * @returns {KUTE.easingFunction} a valid easingfunction
 */
function processBezierEasing(fn) {
  if (typeof fn === 'function') {
    return fn;
  } if (typeof (Easing[fn]) === 'function') {
    return Easing[fn];
  } if (/bezier/.test(fn)) {
    const bz = fn.replace(/bezier|\s|\(|\)/g, '').split(',');
    return new CubicBezier(bz[0] * 1, bz[1] * 1, bz[2] * 1, bz[3] * 1); // bezier easing
  }
  // if (/elastic|bounce/i.test(fn)) {
  //   throw TypeError(`KUTE - CubicBezier doesn't support ${fn} easing.`);
  // }
  return Easing.linear;
}

connect.processEasing = processBezierEasing;

export default Easing;