var ExpressionManager = (function () {
  'use strict';
  var ob = {};
  var Math = BMMath;
  var window = null;
  var document = null;

  function $bm_isInstanceOfArray(arr) {
    return arr.constructor === Array || arr.constructor === Float32Array;
  }

  function isNumerable(tOfV, v) {
    return tOfV === 'number' || tOfV === 'boolean' || tOfV === 'string' || v instanceof Number;
  }

  function $bm_neg(a) {
    var tOfA = typeof a;
    if (tOfA === 'number' || tOfA === 'boolean' || a instanceof Number) {
      return -a;
    }
    if ($bm_isInstanceOfArray(a)) {
      var i, lenA = a.length;
      var retArr = [];
      for (i = 0; i < lenA; i += 1) {
        retArr[i] = -a[i];
      }
      return retArr;
    }
    if (a.propType) {
      return a.v;
    }
  }

  var easeInBez = BezierFactory.getBezierEasing(0.333, 0, .833, .833, 'easeIn').get;
  var easeOutBez = BezierFactory.getBezierEasing(0.167, 0.167, .667, 1, 'easeOut').get;
  var easeInOutBez = BezierFactory.getBezierEasing(.33, 0, .667, 1, 'easeInOut').get;

  function sum(a, b) {
    var tOfA = typeof a;
    var tOfB = typeof b;
    if (tOfA === 'string' || tOfB === 'string') {
      return a + b;
    }
    if (isNumerable(tOfA, a) && isNumerable(tOfB, b)) {
      return a + b;
    }
    if ($bm_isInstanceOfArray(a) && isNumerable(tOfB, b)) {
      a = a.slice(0);
      a[0] = a[0] + b;
      return a;
    }
    if (isNumerable(tOfA, a) && $bm_isInstanceOfArray(b)) {
      b = b.slice(0);
      b[0] = a + b[0];
      return b;
    }
    if ($bm_isInstanceOfArray(a) && $bm_isInstanceOfArray(b)) {
            
      var i = 0, lenA = a.length, lenB = b.length;
      var retArr = [];
      while (i < lenA || i < lenB) {
        if ((typeof a[i] === 'number' || a[i] instanceof Number) && (typeof b[i] === 'number' || b[i] instanceof Number)) {
          retArr[i] = a[i] + b[i];
        } else {
          retArr[i] = b[i] === undefined ? a[i] : a[i] || b[i];
        }
        i += 1;
      }
      return retArr;
    }
    return 0;
  }
  var add = sum;

  function sub(a, b) {
    var tOfA = typeof a;
    var tOfB = typeof b;
    if (isNumerable(tOfA, a) && isNumerable(tOfB, b)) {
      if (tOfA === 'string') {
        a = parseInt(a);
      }
      if (tOfB === 'string') {
        b = parseInt(b);
      }
      return a - b;
    }
    if ($bm_isInstanceOfArray(a) && isNumerable(tOfB, b)) {
      a = a.slice(0);
      a[0] = a[0] - b;
      return a;
    }
    if (isNumerable(tOfA, a) && $bm_isInstanceOfArray(b)) {
      b = b.slice(0);
      b[0] = a - b[0];
      return b;
    }
    if ($bm_isInstanceOfArray(a) && $bm_isInstanceOfArray(b)) {
      var i = 0, lenA = a.length, lenB = b.length;
      var retArr = [];
      while (i < lenA || i < lenB) {
        if ((typeof a[i] === 'number' || a[i] instanceof Number) && (typeof b[i] === 'number' || b[i] instanceof Number)) {
          retArr[i] = a[i] - b[i];
        } else {
          retArr[i] = b[i] === undefined ? a[i] : a[i] || b[i];
        }
        i += 1;
      }
      return retArr;
    }
    return 0;
  }

  function mul(a, b) {
    var tOfA = typeof a;
    var tOfB = typeof b;
    var arr;
    if (isNumerable(tOfA, a) && isNumerable(tOfB, b)) {
      return a * b;
    }

    var i, len;
    if ($bm_isInstanceOfArray(a) && isNumerable(tOfB, b)) {
      len = a.length;
      arr = createTypedArray('float32', len);
      for (i = 0; i < len; i += 1) {
        arr[i] = a[i] * b;
      }
      return arr;
    }
    if (isNumerable(tOfA, a) && $bm_isInstanceOfArray(b)) {
      len = b.length;
      arr = createTypedArray('float32', len);
      for (i = 0; i < len; i += 1) {
        arr[i] = a * b[i];
      }
      return arr;
    }
    return 0;
  }

  function div(a, b) {
    var tOfA = typeof a;
    var tOfB = typeof b;
    var arr;
    if (isNumerable(tOfA, a) && isNumerable(tOfB, b)) {
      return a / b;
    }
    var i, len;
    if ($bm_isInstanceOfArray(a) && isNumerable(tOfB, b)) {
      len = a.length;
      arr = createTypedArray('float32', len);
      for (i = 0; i < len; i += 1) {
        arr[i] = a[i] / b;
      }
      return arr;
    }
    if (isNumerable(tOfA, a) && $bm_isInstanceOfArray(b)) {
      len = b.length;
      arr = createTypedArray('float32', len);
      for (i = 0; i < len; i += 1) {
        arr[i] = a / b[i];
      }
      return arr;
    }
    return 0;
  }
  function mod(a, b) {
    if (typeof a === 'string') {
      a = parseInt(a);
    }
    if (typeof b === 'string') {
      b = parseInt(b);
    }
    return a % b;
  }
  var $bm_sum = sum;
  var $bm_sub = sub;
  var $bm_mul = mul;
  var $bm_div = div;
  var $bm_mod = mod;

  function clamp(num, min, max) {
    if (min > max) {
      var mm = max;
      max = min;
      min = mm;
    }
    return Math.min(Math.max(num, min), max);
  }

  function radiansToDegrees(val) {
    return val / degToRads;
  }
  var radians_to_degrees = radiansToDegrees;

  function degreesToRadians(val) {
    return val * degToRads;
  }
  var degrees_to_radians = radiansToDegrees;

  var helperLengthArray = [0, 0, 0, 0, 0, 0];

  function length(arr1, arr2) {
    if (typeof arr1 === 'number' || arr1 instanceof Number) {
      arr2 = arr2 || 0;
      return Math.abs(arr1 - arr2);
    }
    if (!arr2) {
      arr2 = helperLengthArray;
    }
    var i, len = Math.min(arr1.length, arr2.length);
    var addedLength = 0;
    for (i = 0; i < len; i += 1) {
      addedLength += Math.pow(arr2[i] - arr1[i], 2);
    }
    return Math.sqrt(addedLength);
  }

  function normalize(vec) {
    return div(vec, length(vec));
  }

  function rgbToHsl(val) {
    var r = val[0]; var g = val[1]; var b = val[2];
    var max = Math.max(r, g, b), min = Math.min(r, g, b);
    var h, s, l = (max + min) / 2;

    if (max == min) {
      h = s = 0; // achromatic
    } else {
      var d = max - min;
      s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
      switch (max) {
        case r: h = (g - b) / d + (g < b ? 6 : 0); break;
        case g: h = (b - r) / d + 2; break;
        case b: h = (r - g) / d + 4; break;
      }
      h /= 6;
    }

    return [h, s, l, val[3]];
  }

  function hue2rgb(p, q, t) {
    if (t < 0) t += 1;
    if (t > 1) t -= 1;
    if (t < 1 / 6) return p + (q - p) * 6 * t;
    if (t < 1 / 2) return q;
    if (t < 2 / 3) return p + (q - p) * (2 / 3 - t) * 6;
    return p;
  }

  function hslToRgb(val) {
    var h = val[0];
    var s = val[1];
    var l = val[2];

    var r, g, b;

    if (s === 0) {
      r = g = b = l; // achromatic
    } else {

      var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
      var p = 2 * l - q;
      r = hue2rgb(p, q, h + 1 / 3);
      g = hue2rgb(p, q, h);
      b = hue2rgb(p, q, h - 1 / 3);
    }

    return [r, g, b, val[3]];
  }

  function linear(t, tMin, tMax, value1, value2) {
    if (value1 === undefined || value2 === undefined) {
      value1 = tMin;
      value2 = tMax;
      tMin = 0;
      tMax = 1;
    }
    if (tMax < tMin) {
      var _tMin = tMax;
      tMax = tMin;
      tMin = _tMin;
    }
    if (t <= tMin) {
      return value1;
    } else if (t >= tMax) {
      return value2;
    }
    var perc = tMax === tMin ? 0 : (t - tMin) / (tMax - tMin);
    if (!value1.length) {
      return value1 + (value2 - value1) * perc;
    }
    var i, len = value1.length;
    var arr = createTypedArray('float32', len);
    for (i = 0; i < len; i += 1) {
      arr[i] = value1[i] + (value2[i] - value1[i]) * perc;
    }
    return arr;
  }
  function random(min, max) {
    if (max === undefined) {
      if (min === undefined) {
        min = 0;
        max = 1;
      } else {
        max = min;
        min = undefined;
      }
    }
    if (max.length) {
      var i, len = max.length;
      if (!min) {
        min = createTypedArray('float32', len);
      }
      var arr = createTypedArray('float32', len);
      var rnd = BMMath.random();
      for (i = 0; i < len; i += 1) {
        arr[i] = min[i] + rnd * (max[i] - min[i]);
      }
      return arr;
    }
    if (min === undefined) {
      min = 0;
    }
    var rndm = BMMath.random();
    return min + rndm * (max - min);
  }

  function createPath(points, inTangents, outTangents, closed) {
    var i, len = points.length;
    var path = shape_pool.newElement();
    path.setPathData(!!closed, len);
    var arrPlaceholder = [0, 0], inVertexPoint, outVertexPoint;
    for (i = 0; i < len; i += 1) {
      inVertexPoint = (inTangents && inTangents[i]) ? inTangents[i] : arrPlaceholder;
      outVertexPoint = (outTangents && outTangents[i]) ? outTangents[i] : arrPlaceholder;
      path.setTripleAt(points[i][0], points[i][1], outVertexPoint[0] + points[i][0], outVertexPoint[1] + points[i][1], inVertexPoint[0] + points[i][0], inVertexPoint[1] + points[i][1], i, true);
    }
    return path;
  }

  function initiateExpression(elem, data, property) {
    var val = data.x;
    var needsVelocity = /velocity(?![\w\d])/.test(val);
    var _needsRandom = val.indexOf('random') !== -1;
    var elemType = elem.data.ty;
    var transform, $bm_transform, content, effect;
    var thisProperty = property;
    thisProperty.valueAtTime = thisProperty.getValueAtTime;
    Object.defineProperty(thisProperty, 'value', {
      get: function () {
        return thisProperty.v;
      },
    });
    elem.comp.frameDuration = 1 / elem.comp.globalData.frameRate;
    elem.comp.displayStartTime = 0;
    var inPoint = elem.data.ip / elem.comp.globalData.frameRate;
    var outPoint = elem.data.op / elem.comp.globalData.frameRate;
    var width = elem.data.sw ? elem.data.sw : 0;
    var height = elem.data.sh ? elem.data.sh : 0;
    var name = elem.data.nm;
    var loopIn, loop_in, loopOut, loop_out, smooth;
    var toWorld, fromWorld, fromComp, toComp, fromCompToSurface, position, rotation, anchorPoint, scale, thisLayer, thisComp, mask, valueAtTime, velocityAtTime;
    var __expression_functions = [];
    if (data.xf) {
      var i, len = data.xf.length;
      for (i = 0; i < len; i += 1) {
        __expression_functions[i] = eval('(function(){ return ' + data.xf[i] + '}())');
      }
    }

    var scoped_bm_rt;
    var expression_function = eval('[function _expression_function(){' + val + ';scoped_bm_rt=$bm_rt}' + ']')[0];
    var numKeys = property.kf ? data.k.length : 0;

    var active = !this.data || this.data.hd !== true;

    var wiggle = function wiggle(freq, amp) {
      var i, j, len = this.pv.length ? this.pv.length : 1;
      var addedAmps = createTypedArray('float32', len);
      freq = 5;
      var iterations = Math.floor(time * freq);
      i = 0;
      j = 0;
      while (i < iterations) {
        // var rnd = BMMath.random();
        for (j = 0; j < len; j += 1) {
          addedAmps[j] += -amp + amp * 2 * BMMath.random();
          // addedAmps[j] += -amp + amp*2*rnd;
        }
        i += 1;
      }
      // var rnd2 = BMMath.random();
      var periods = time * freq;
      var perc = periods - Math.floor(periods);
      var arr = createTypedArray('float32', len);
      if (len > 1) {
        for (j = 0; j < len; j += 1) {
          arr[j] = this.pv[j] + addedAmps[j] + (-amp + amp * 2 * BMMath.random()) * perc;
          // arr[j] = this.pv[j] + addedAmps[j] + (-amp + amp*2*rnd)*perc;
          // arr[i] = this.pv[i] + addedAmp + amp1*perc + amp2*(1-perc);
        }
        return arr;
      } else {
        return this.pv + addedAmps[0] + (-amp + amp * 2 * BMMath.random()) * perc;
      }
    }.bind(this);

    if (thisProperty.loopIn) {
      loopIn = thisProperty.loopIn.bind(thisProperty);
      loop_in = loopIn;
    }

    if (thisProperty.loopOut) {
      loopOut = thisProperty.loopOut.bind(thisProperty);
      loop_out = loopOut;
    }

    if (thisProperty.smooth) {
      smooth = thisProperty.smooth.bind(thisProperty);
    }

    function loopInDuration(type, duration) {
      return loopIn(type, duration, true);
    }

    function loopOutDuration(type, duration) {
      return loopOut(type, duration, true);
    }

    if (this.getValueAtTime) {
      valueAtTime = this.getValueAtTime.bind(this);
    }

    if (this.getVelocityAtTime) {
      velocityAtTime = this.getVelocityAtTime.bind(this);
    }

    var comp = elem.comp.globalData.projectInterface.bind(elem.comp.globalData.projectInterface);

    function lookAt(elem1, elem2) {
      var fVec = [elem2[0] - elem1[0], elem2[1] - elem1[1], elem2[2] - elem1[2]];
      var pitch = Math.atan2(fVec[0], Math.sqrt(fVec[1] * fVec[1] + fVec[2] * fVec[2])) / degToRads;
      var yaw = -Math.atan2(fVec[1], fVec[2]) / degToRads;
      return [yaw, pitch, 0];
    }

    function easeOut(t, tMin, tMax, val1, val2) {
      return applyEase(easeOutBez, t, tMin, tMax, val1, val2);
    }

    function easeIn(t, tMin, tMax, val1, val2) {
      return applyEase(easeInBez, t, tMin, tMax, val1, val2);
    }

    function ease(t, tMin, tMax, val1, val2) {
      return applyEase(easeInOutBez, t, tMin, tMax, val1, val2);
    }

    function applyEase(fn, t, tMin, tMax, val1, val2) {
      if (val1 === undefined) {
        val1 = tMin;
        val2 = tMax;
      } else {
        t = (t - tMin) / (tMax - tMin);
      }
      t = t > 1 ? 1 : t < 0 ? 0 : t;
      var mult = fn(t);
      if ($bm_isInstanceOfArray(val1)) {
        var i, len = val1.length;
        var arr = createTypedArray('float32', len);
        for (i = 0; i < len; i += 1) {
          arr[i] = (val2[i] - val1[i]) * mult + val1[i];
        }
        return arr;
      } else {
        return (val2 - val1) * mult + val1;
      }
    }

    function nearestKey(time) {
      var i, len = data.k.length, index, keyTime;
      if (!data.k.length || typeof (data.k[0]) === 'number') {
        index = 0;
        keyTime = 0;
      } else {
        index = -1;
        time *= elem.comp.globalData.frameRate;
        if (time < data.k[0].t) {
          index = 1;
          keyTime = data.k[0].t;
        } else {
          for (i = 0; i < len - 1; i += 1) {
            if (time === data.k[i].t) {
              index = i + 1;
              keyTime = data.k[i].t;
              break;
            } else if (time > data.k[i].t && time < data.k[i + 1].t) {
              if (time - data.k[i].t > data.k[i + 1].t - time) {
                index = i + 2;
                keyTime = data.k[i + 1].t;
              } else {
                index = i + 1;
                keyTime = data.k[i].t;
              }
              break;
            }
          }
          if (index === -1) {
            index = i + 1;
            keyTime = data.k[i].t;
          }
        }
                
      }
      var ob = {};
      ob.index = index;
      ob.time = keyTime / elem.comp.globalData.frameRate;
      return ob;
    }

    function key(ind) {
      var ob, i, len;
      if (!data.k.length || typeof (data.k[0]) === 'number') {
        throw new Error('The property has no keyframe at index ' + ind);
      }
      ind -= 1;
      ob = {
        time: data.k[ind].t / elem.comp.globalData.frameRate,
        value: [],
      };
      var arr = data.k[ind].hasOwnProperty('s') ? data.k[ind].s : data.k[ind - 1].e;

      len = arr.length;
      for (i = 0; i < len; i += 1) {
        ob[i] = arr[i];
        ob.value[i] = arr[i];
      }
      return ob;
    }

    function framesToTime(frames, fps) { 
      if (!fps) {
        fps = elem.comp.globalData.frameRate;
      }
      return frames / fps;
    }

    function timeToFrames(t, fps) {
      if (!t && t !== 0) {
        t = time;
      }
      if (!fps) {
        fps = elem.comp.globalData.frameRate;
      }
      return t * fps;
    }

    function seedRandom(seed) {
      BMMath.seedrandom(randSeed + seed);
    }

    function sourceRectAtTime() {
      return elem.sourceRectAtTime();
    }

    function substring(init, end) {
      if (typeof value === 'string') {
        if (end === undefined) {
          return value.substring(init);
        }
        return value.substring(init, end);
      }
      return '';
    }

    function substr(init, end) {
      if (typeof value === 'string') {
        if (end === undefined) {
          return value.substr(init);
        }
        return value.substr(init, end);
      }
      return '';
    }

    function posterizeTime(framesPerSecond) {
      time = framesPerSecond === 0 ? 0 : Math.floor(time * framesPerSecond) / framesPerSecond;
      value = valueAtTime(time);
    }

    var time, velocity, value, text, textIndex, textTotal, selectorValue;
    var index = elem.data.ind;
    var hasParent = !!(elem.hierarchy && elem.hierarchy.length);
    var parent;
    var randSeed = Math.floor(Math.random() * 1000000);
    var globalData = elem.globalData;
    function executeExpression(_value) {
      // globalData.pushExpression();
      value = _value;
      if (_needsRandom) {
        seedRandom(randSeed);
      }
      if (this.frameExpressionId === elem.globalData.frameId && this.propType !== 'textSelector') {
        return value;
      }
      if (this.propType === 'textSelector') {
        textIndex = this.textIndex;
        textTotal = this.textTotal;
        selectorValue = this.selectorValue;
      }
      if (!thisLayer) {
        text = elem.layerInterface.text;
        thisLayer = elem.layerInterface;
        thisComp = elem.comp.compInterface;
        toWorld = thisLayer.toWorld.bind(thisLayer);
        fromWorld = thisLayer.fromWorld.bind(thisLayer);
        fromComp = thisLayer.fromComp.bind(thisLayer);
        toComp = thisLayer.toComp.bind(thisLayer);
        mask = thisLayer.mask ? thisLayer.mask.bind(thisLayer) : null;
        fromCompToSurface = fromComp;
      }
      if (!transform) {
        transform = elem.layerInterface('ADBE Transform Group');
        $bm_transform = transform;
        if (transform) {
          anchorPoint = transform.anchorPoint;
          /* position = transform.position;
                    rotation = transform.rotation;
                    scale = transform.scale; */
        }
      }
            
      if (elemType === 4 && !content) {
        content = thisLayer('ADBE Root Vectors Group');
      }
      if (!effect) {
        effect = thisLayer(4);
      }
      hasParent = !!(elem.hierarchy && elem.hierarchy.length);
      if (hasParent && !parent) {
        parent = elem.hierarchy[0].layerInterface;
      }
      time = this.comp.renderedFrame / this.comp.globalData.frameRate;
      if (needsVelocity) {
        velocity = velocityAtTime(time);
      }
      expression_function();
      this.frameExpressionId = elem.globalData.frameId;

      // TODO: Check if it's possible to return on ShapeInterface the .v value
      if (scoped_bm_rt.propType === 'shape') {
        scoped_bm_rt = scoped_bm_rt.v;
      }
      // globalData.popExpression();
      return scoped_bm_rt;
    }
    return executeExpression;
  }

  ob.initiateExpression = initiateExpression;
  return ob;
}());