import {
  degToRads,
} from './common';
import {
  extendPrototype,
} from './functionExtensions';
import DynamicPropertyContainer from './helpers/dynamicProperties';
import Matrix from '../3rd_party/transformation-matrix';
import PropertyFactory from './PropertyFactory';

const TransformPropertyFactory = (function () {
  var defaultVector = [0, 0];

  function applyToMatrix(mat) {
    var _mdf = this._mdf;
    this.iterateDynamicProperties();
    this._mdf = this._mdf || _mdf;
    if (this.a) {
      mat.translate(-this.a.v[0], -this.a.v[1], this.a.v[2]);
    }
    if (this.s) {
      mat.scale(this.s.v[0], this.s.v[1], this.s.v[2]);
    }
    if (this.sk) {
      mat.skewFromAxis(-this.sk.v, this.sa.v);
    }
    if (this.r) {
      mat.rotate(-this.r.v);
    } else {
      mat.rotateZ(-this.rz.v).rotateY(this.ry.v).rotateX(this.rx.v).rotateZ(-this.or.v[2])
        .rotateY(this.or.v[1])
        .rotateX(this.or.v[0]);
    }
    if (this.data.p.s) {
      if (this.data.p.z) {
        mat.translate(this.px.v, this.py.v, -this.pz.v);
      } else {
        mat.translate(this.px.v, this.py.v, 0);
      }
    } else {
      mat.translate(this.p.v[0], this.p.v[1], -this.p.v[2]);
    }
  }
  function processKeys(forceRender) {
    if (this.elem.globalData.frameId === this.frameId) {
      return;
    }
    if (this._isDirty) {
      this.precalculateMatrix();
      this._isDirty = false;
    }

    this.iterateDynamicProperties();

    if (this._mdf || forceRender) {
      var frameRate;
      this.v.cloneFromProps(this.pre.props);
      if (this.appliedTransformations < 1) {
        this.v.translate(-this.a.v[0], -this.a.v[1], this.a.v[2]);
      }
      if (this.appliedTransformations < 2) {
        this.v.scale(this.s.v[0], this.s.v[1], this.s.v[2]);
      }
      if (this.sk && this.appliedTransformations < 3) {
        this.v.skewFromAxis(-this.sk.v, this.sa.v);
      }
      if (this.r && this.appliedTransformations < 4) {
        this.v.rotate(-this.r.v);
      } else if (!this.r && this.appliedTransformations < 4) {
        this.v.rotateZ(-this.rz.v).rotateY(this.ry.v).rotateX(this.rx.v).rotateZ(-this.or.v[2])
          .rotateY(this.or.v[1])
          .rotateX(this.or.v[0]);
      }
      if (this.autoOriented) {
        var v1;
        var v2;
        frameRate = this.elem.globalData.frameRate;
        if (this.p && this.p.keyframes && this.p.getValueAtTime) {
          if (this.p._caching.lastFrame + this.p.offsetTime <= this.p.keyframes[0].t) {
            v1 = this.p.getValueAtTime((this.p.keyframes[0].t + 0.01) / frameRate, 0);
            v2 = this.p.getValueAtTime(this.p.keyframes[0].t / frameRate, 0);
          } else if (this.p._caching.lastFrame + this.p.offsetTime >= this.p.keyframes[this.p.keyframes.length - 1].t) {
            v1 = this.p.getValueAtTime((this.p.keyframes[this.p.keyframes.length - 1].t / frameRate), 0);
            v2 = this.p.getValueAtTime((this.p.keyframes[this.p.keyframes.length - 1].t - 0.05) / frameRate, 0);
          } else {
            v1 = this.p.pv;
            v2 = this.p.getValueAtTime((this.p._caching.lastFrame + this.p.offsetTime - 0.01) / frameRate, this.p.offsetTime);
          }
        } else if (this.px && this.px.keyframes && this.py.keyframes && this.px.getValueAtTime && this.py.getValueAtTime) {
          v1 = [];
          v2 = [];
          var px = this.px;
          var py = this.py;
          if (px._caching.lastFrame + px.offsetTime <= px.keyframes[0].t) {
            v1[0] = px.getValueAtTime((px.keyframes[0].t + 0.01) / frameRate, 0);
            v1[1] = py.getValueAtTime((py.keyframes[0].t + 0.01) / frameRate, 0);
            v2[0] = px.getValueAtTime((px.keyframes[0].t) / frameRate, 0);
            v2[1] = py.getValueAtTime((py.keyframes[0].t) / frameRate, 0);
          } else if (px._caching.lastFrame + px.offsetTime >= px.keyframes[px.keyframes.length - 1].t) {
            v1[0] = px.getValueAtTime((px.keyframes[px.keyframes.length - 1].t / frameRate), 0);
            v1[1] = py.getValueAtTime((py.keyframes[py.keyframes.length - 1].t / frameRate), 0);
            v2[0] = px.getValueAtTime((px.keyframes[px.keyframes.length - 1].t - 0.01) / frameRate, 0);
            v2[1] = py.getValueAtTime((py.keyframes[py.keyframes.length - 1].t - 0.01) / frameRate, 0);
          } else {
            v1 = [px.pv, py.pv];
            v2[0] = px.getValueAtTime((px._caching.lastFrame + px.offsetTime - 0.01) / frameRate, px.offsetTime);
            v2[1] = py.getValueAtTime((py._caching.lastFrame + py.offsetTime - 0.01) / frameRate, py.offsetTime);
          }
        } else {
          v2 = defaultVector;
          v1 = v2;
        }
        this.v.rotate(-Math.atan2(v1[1] - v2[1], v1[0] - v2[0]));
      }
      if (this.data.p && this.data.p.s) {
        if (this.data.p.z) {
          this.v.translate(this.px.v, this.py.v, -this.pz.v);
        } else {
          this.v.translate(this.px.v, this.py.v, 0);
        }
      } else {
        this.v.translate(this.p.v[0], this.p.v[1], -this.p.v[2]);
      }
    }
    this.frameId = this.elem.globalData.frameId;
  }

  function precalculateMatrix() {
    if (!this.a.k) {
      this.pre.translate(-this.a.v[0], -this.a.v[1], this.a.v[2]);
      this.appliedTransformations = 1;
    } else {
      return;
    }
    if (!this.s.effectsSequence.length) {
      this.pre.scale(this.s.v[0], this.s.v[1], this.s.v[2]);
      this.appliedTransformations = 2;
    } else {
      return;
    }
    if (this.sk) {
      if (!this.sk.effectsSequence.length && !this.sa.effectsSequence.length) {
        this.pre.skewFromAxis(-this.sk.v, this.sa.v);
        this.appliedTransformations = 3;
      } else {
        return;
      }
    }
    if (this.r) {
      if (!this.r.effectsSequence.length) {
        this.pre.rotate(-this.r.v);
        this.appliedTransformations = 4;
      }
    } else if (!this.rz.effectsSequence.length && !this.ry.effectsSequence.length && !this.rx.effectsSequence.length && !this.or.effectsSequence.length) {
      this.pre.rotateZ(-this.rz.v).rotateY(this.ry.v).rotateX(this.rx.v).rotateZ(-this.or.v[2])
        .rotateY(this.or.v[1])
        .rotateX(this.or.v[0]);
      this.appliedTransformations = 4;
    }
  }

  function autoOrient() {
    //
    // var prevP = this.getValueAtTime();
  }

  function addDynamicProperty(prop) {
    this._addDynamicProperty(prop);
    this.elem.addDynamicProperty(prop);
    this._isDirty = true;
  }

  function TransformProperty(elem, data, container) {
    this.elem = elem;
    this.frameId = -1;
    this.propType = 'transform';
    this.data = data;
    this.v = new Matrix();
    // Precalculated matrix with non animated properties
    this.pre = new Matrix();
    this.appliedTransformations = 0;
    this.initDynamicPropertyContainer(container || elem);
    if (data.p && data.p.s) {
      this.px = PropertyFactory.getProp(elem, data.p.x, 0, 0, this);
      this.py = PropertyFactory.getProp(elem, data.p.y, 0, 0, this);
      if (data.p.z) {
        this.pz = PropertyFactory.getProp(elem, data.p.z, 0, 0, this);
      }
    } else {
      this.p = PropertyFactory.getProp(elem, data.p || { k: [0, 0, 0] }, 1, 0, this);
    }
    if (data.rx) {
      this.rx = PropertyFactory.getProp(elem, data.rx, 0, degToRads, this);
      this.ry = PropertyFactory.getProp(elem, data.ry, 0, degToRads, this);
      this.rz = PropertyFactory.getProp(elem, data.rz, 0, degToRads, this);
      if (data.or.k[0].ti) {
        var i;
        var len = data.or.k.length;
        for (i = 0; i < len; i += 1) {
          data.or.k[i].to = null;
          data.or.k[i].ti = null;
        }
      }
      this.or = PropertyFactory.getProp(elem, data.or, 1, degToRads, this);
      // sh Indicates it needs to be capped between -180 and 180
      this.or.sh = true;
    } else {
      this.r = PropertyFactory.getProp(elem, data.r || { k: 0 }, 0, degToRads, this);
    }
    if (data.sk) {
      this.sk = PropertyFactory.getProp(elem, data.sk, 0, degToRads, this);
      this.sa = PropertyFactory.getProp(elem, data.sa, 0, degToRads, this);
    }
    this.a = PropertyFactory.getProp(elem, data.a || { k: [0, 0, 0] }, 1, 0, this);
    this.s = PropertyFactory.getProp(elem, data.s || { k: [100, 100, 100] }, 1, 0.01, this);
    // Opacity is not part of the transform properties, that's why it won't use this.dynamicProperties. That way transforms won't get updated if opacity changes.
    if (data.o) {
      this.o = PropertyFactory.getProp(elem, data.o, 0, 0.01, elem);
    } else {
      this.o = { _mdf: false, v: 1 };
    }
    this._isDirty = true;
    if (!this.dynamicProperties.length) {
      this.getValue(true);
    }
  }

  TransformProperty.prototype = {
    applyToMatrix: applyToMatrix,
    getValue: processKeys,
    precalculateMatrix: precalculateMatrix,
    autoOrient: autoOrient,
  };

  extendPrototype([DynamicPropertyContainer], TransformProperty);
  TransformProperty.prototype.addDynamicProperty = addDynamicProperty;
  TransformProperty.prototype._addDynamicProperty = DynamicPropertyContainer.prototype.addDynamicProperty;

  function getTransformProperty(elem, data, container) {
    return new TransformProperty(elem, data, container);
  }

  return {
    getTransformProperty: getTransformProperty,
  };
}());

export default TransformPropertyFactory;