import {Injectable} from '@angular/core';

@Injectable()
export class RoundProgressEase {
  // t: current time (or position) of the neonate. This can be seconds or frames, steps,
  // seconds, ms, whatever – as long as the unit is the same as is used for the total time.
  // b: beginning value of the property.
  // c: change between the beginning and destination value of the property.
  // d: total time of the neonate.

  getAnimateValue(param)  {
    switch (param.name) {
      case 'linearEase':
        return this.linearEase(param.t, param.b, param.c, param.d);
      case 'easeInQuad':
        return this.easeInQuad(param.t, param.b, param.c, param.d);
      case 'easeOutQuad':
        return this.easeOutQuad(param.t, param.b, param.c, param.d);
      case 'easeInOutQuad':
        return this.easeInOutQuad(param.t, param.b, param.c, param.d);
      case 'easeInCubic':
        return this.easeInCubic(param.t, param.b, param.c, param.d);
      case 'easeOutCubic':
        return this.easeOutCubic(param.t, param.b, param.c, param.d);
      case 'easeInOutCubic':
        return this.easeInOutCubic(param.t, param.b, param.c, param.d);
      case 'easeInQuart':
        return this.easeInQuart(param.t, param.b, param.c, param.d);
      case 'easeOutQuart':
        return this.easeOutQuart(param.t, param.b, param.c, param.d);
      case 'easeInOutQuart':
        return this.easeInOutQuart(param.t, param.b, param.c, param.d);
      case 'easeInQuint':
        return this.easeInQuint(param.t, param.b, param.c, param.d);
      case 'easeOutQuint':
        return this.easeOutQuint(param.t, param.b, param.c, param.d);
      case 'easeInOutQuint':
        return this.easeInOutQuint(param.t, param.b, param.c, param.d);
      case 'easeInSine':
        return this.easeInSine(param.t, param.b, param.c, param.d);
      case 'easeOutSine':
        return this.easeOutSine(param.t, param.b, param.c, param.d);
      case 'easeInOutSine':
        return this.easeInOutSine(param.t, param.b, param.c, param.d);
      case 'easeInExpo':
        return this.easeInExpo(param.t, param.b, param.c, param.d);
      case 'easeOutExpo':
        return this.easeOutExpo(param.t, param.b, param.c, param.d);
      case 'easeInOutExpo':
        return this.easeInOutExpo(param.t, param.b, param.c, param.d);
      case 'easeInCirc':
        return this.easeInCirc(param.t, param.b, param.c, param.d);
      case 'easeOutCirc':
        return this.easeOutCirc(param.t, param.b, param.c, param.d);
      case 'easeInOutCirc':
        return this.easeInOutCirc(param.t, param.b, param.c, param.d);
      case 'easeInElastic':
        return this.easeInElastic(param.t, param.b, param.c, param.d);
      case 'easeOutElastic':
        return this.easeOutElastic(param.t, param.b, param.c, param.d);
      case 'easeInOutElastic':
        return this.easeInOutElastic(param.t, param.b, param.c, param.d);
      case 'easeInBack':
        return this.easeInBack(param.t, param.b, param.c, param.d);
      case 'easeOutBack':
        return this.easeOutBack(param.t, param.b, param.c, param.d);
      case 'easeInOutBack':
        return this.easeInOutBack(param.t, param.b, param.c, param.d);
      case 'easeInBounce':
        return this.easeInBounce(param.t, param.b, param.c, param.d);
      case 'easeOutBounce':
        return this.easeOutBounce(param.t, param.b, param.c, param.d);
      case 'easeInOutBounce':
        return this.easeInOutBounce(param.t, param.b, param.c, param.d);
    }
  }
  
  linearEase(t: number, b: number, c: number, d: number): number {
    return c * t / d + b;
  };

  easeInQuad(t: number, b: number, c: number, d: number): number {
    return c * (t /= d) * t + b;
  };

  easeOutQuad(t: number, b: number, c: number, d: number): number {
    return -c * (t /= d) * (t - 2) + b;
  };

  easeInOutQuad(t: number, b: number, c: number, d: number): number {
    if ((t /= d / 2) < 1) {
      return c / 2 * t * t + b;
    }

    return -c / 2 * ((--t) * (t - 2) - 1) + b;
  };

  easeInCubic(t: number, b: number, c: number, d: number): number {
    return c * (t /= d) * t * t + b;
  };

  easeOutCubic(t: number, b: number, c: number, d: number): number {
    return c * ((t = t / d - 1) * t * t + 1) + b;
  };

  easeInOutCubic(t: number, b: number, c: number, d: number): number {
    if ((t /= d / 2) < 1) {
      return c / 2 * t * t * t + b;
    }

    return c / 2 * ((t -= 2) * t * t + 2) + b;
  };

  easeInQuart(t: number, b: number, c: number, d: number): number {
    return c * (t /= d) * t * t * t + b;
  };

  easeOutQuart(t: number, b: number, c: number, d: number): number {
    return -c * ((t = t / d - 1) * t * t * t - 1) + b;
  };

  easeInOutQuart(t: number, b: number, c: number, d: number): number {
    if ((t /= d / 2) < 1) {
      return c / 2 * t * t * t * t + b;
    }

    return -c / 2 * ((t -= 2) * t * t * t - 2) + b;
  };

  easeInQuint(t: number, b: number, c: number, d: number): number {
    return c * (t /= d) * t * t * t * t + b;
  };

  easeOutQuint(t: number, b: number, c: number, d: number): number {
    return c * ((t = t / d - 1) * t * t * t * t + 1) + b;
  };

  easeInOutQuint(t: number, b: number, c: number, d: number): number {
    if ((t /= d / 2) < 1) {
      return c / 2 * t * t * t * t * t + b;
    }

    return c / 2 * ((t -= 2) * t * t * t * t + 2) + b;
  };

  easeInSine(t: number, b: number, c: number, d: number): number {
    return -c * Math.cos(t / d * (Math.PI / 2)) + c + b;
  };

  easeOutSine(t: number, b: number, c: number, d: number): number {
    return c * Math.sin(t / d * (Math.PI / 2)) + b;
  };

  easeInOutSine(t: number, b: number, c: number, d: number): number {
    return -c / 2 * (Math.cos(Math.PI * t / d) - 1) + b;
  };

  easeInExpo(t: number, b: number, c: number, d: number): number {
    return (t == 0) ? b : c * Math.pow(2, 10 * (t / d - 1)) + b;
  };

  easeOutExpo(t: number, b: number, c: number, d: number): number {
    return (t == d) ? b + c : c * (-Math.pow(2, -10 * t / d) + 1) + b;
  };

  easeInOutExpo(t: number, b: number, c: number, d: number): number {
    if (t == 0) {
      return b;
    };

    if (t == d) {
      return b + c;
    }

    if ((t /= d / 2) < 1) {
      return c / 2 * Math.pow(2, 10 * (t - 1)) + b;
    }

    return c / 2 * (-Math.pow(2, -10 * --t) + 2) + b;
  };

  easeInCirc(t: number, b: number, c: number, d: number): number {
    return -c * (Math.sqrt(1 - (t /= d) * t) - 1) + b;
  };

  easeOutCirc(t: number, b: number, c: number, d: number): number {
    return c * Math.sqrt(1 - (t = t / d - 1) * t) + b;
  };

  easeInOutCirc(t: number, b: number, c: number, d: number): number {
    if ((t /= d / 2) < 1) {
      return -c / 2 * (Math.sqrt(1 - t * t) - 1) + b;
    }

    return c / 2 * (Math.sqrt(1 - (t -= 2) * t) + 1) + b;
  };

  easeInElastic(t: number, b: number, c: number, d: number): number {
    let s = 1.70158;
    let p = d * 0.3;
    let a = c;

    if (t == 0) {
      return b;
    }

    if ((t /= d) == 1) {
      return b + c;
    }

    if (a < Math.abs(c)) {
      a = c;
      s = p / 4;
    } else {
      s = p / (2 * Math.PI) * Math.asin(c / a);
    }

    return -(a * Math.pow(2, 10 * (t--)) * Math.sin((t * d - s) * (2 * Math.PI) / p)) + b;
  };

  easeOutElastic(t: number, b: number, c: number, d: number): number {
    let s = 1.70158;
    let p = d * 0.3;
    let a = c;

    if (t == 0) {
      return b;
    }

    if ((t /= d) == 1) {
      return b + c;
    }

    if (a < Math.abs(c)) {
      a = c;
      s = p / 4;
    } else {
      s = p / (2 * Math.PI) * Math.asin(c / a);
    }

    return a * Math.pow(2, -10 * t) * Math.sin((t * d - s) * (2 * Math.PI) / p) + c + b;
  };

  easeInOutElastic(t: number, b: number, c: number, d: number): number {
    let s = 1.70158;
    let p = d * (0.3 * 1.5);
    let a = c;

    if (t == 0) {
      return b;
    }

    if ((t /= d / 2) == 2) {
      return b + c;
    }

    if (a < Math.abs(c)) {
      a = c;
      s = p / 4;
    } else {
      s = p / (2 * Math.PI) * Math.asin(c / a);
    }

    if (t < 1) {
      return -0.5 * (a * Math.pow(2, 10 * (t -= 1)) *
        Math.sin((t * d - s) * (2 * Math.PI) / p)) + b;
    }

    return a * Math.pow(2, -10 * (t -= 1)) *
      Math.sin((t * d - s) * (2 * Math.PI) / p) * 0.5 + c + b;
  };

  easeInBack(t: number, b: number, c: number, d: number, s = 1.70158): number {
    return c * (t /= d) * t * ((s + 1) * t - s) + b;
  };

  easeOutBack(t: number, b: number, c: number, d: number, s = 1.70158): number {
    return c * ((t = t / d - 1) * t * ((s + 1) * t + s) + 1) + b;
  };

  easeInOutBack(t: number, b: number, c: number, d: number, s = 1.70158): number {
    if ((t /= d / 2) < 1) {
      return c / 2 * (t * t * (((s *= 1.525) + 1) * t - s)) + b;
    }

    return c / 2 * ((t -= 2) * t * (((s *= 1.525) + 1) * t + s) + 2) + b;
  };

  easeInBounce(t: number, b: number, c: number, d: number): number {
    return c - this.easeOutBounce(d - t, 0, c, d) + b;
  };

  easeOutBounce(t: number, b: number, c: number, d: number): number {
    if ((t /= d) < (1 / 2.75)) {
      return c * (7.5625 * t * t) + b;
    } else if (t < (2 / 2.75)) {
      return c * (7.5625 * (t -= (1.5 / 2.75)) * t + 0.75) + b;
    } else if (t < (2.5 / 2.75)) {
      return c * (7.5625 * (t -= (2.25 / 2.75)) * t + 0.9375) + b;
    }

    return c * (7.5625 * (t -= (2.625 / 2.75)) * t + 0.984375) + b;
  };

  easeInOutBounce(t: number, b: number, c: number, d: number): number {
    if (t < d / 2) {
      return this.easeInBounce(t * 2, 0, c, d) * 0.5 + b;
    }

    return this.easeOutBounce(t * 2 - d, 0, c, d) * 0.5 + c * 0.5 + b;
  };
}


/**
 * TERMS OF USE - EASING EQUATIONS
 * Open source under the BSD License.

 * Copyright © 2001 Robert Penner
 * All rights reserved.
 * Redistribution and use in source and binary forms, with or without modification, are permitted
 * provided that the following conditions are met:

 * Redistributions of source code must retain the above copyright notice, this list of conditions
 * and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice, this list of conditions
 * and the following disclaimer in the documentation and/or other materials provided with the
 * distribution.
 *
 * Neither the name of the author nor the names of contributors may be used to endorse or promote
 * products derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */