var ShapeExpressionInterface = (function () {

  function iterateElements(shapes, view, propertyGroup) {
    var arr = [];
    var i, len = shapes ? shapes.length : 0;
    for (i = 0; i < len; i += 1) {
      if (shapes[i].ty == 'gr') {
        arr.push(groupInterfaceFactory(shapes[i], view[i], propertyGroup));
      } else if (shapes[i].ty == 'fl') {
        arr.push(fillInterfaceFactory(shapes[i], view[i], propertyGroup));
      } else if (shapes[i].ty == 'st') {
        arr.push(strokeInterfaceFactory(shapes[i], view[i], propertyGroup));
      } else if (shapes[i].ty == 'tm') {
        arr.push(trimInterfaceFactory(shapes[i], view[i], propertyGroup));
      } else if (shapes[i].ty == 'tr') {
        // arr.push(transformInterfaceFactory(shapes[i],view[i],propertyGroup));
      } else if (shapes[i].ty == 'el') {
        arr.push(ellipseInterfaceFactory(shapes[i], view[i], propertyGroup));
      } else if (shapes[i].ty == 'sr') {
        arr.push(starInterfaceFactory(shapes[i], view[i], propertyGroup));
      } else if (shapes[i].ty == 'sh') {
        arr.push(ShapePathInterface(shapes[i], view[i], propertyGroup));
      } else if (shapes[i].ty == 'rc') {
        arr.push(rectInterfaceFactory(shapes[i], view[i], propertyGroup));
      } else if (shapes[i].ty == 'rd') {
        arr.push(roundedInterfaceFactory(shapes[i], view[i], propertyGroup));
      } else if (shapes[i].ty == 'rp') {
        arr.push(repeaterInterfaceFactory(shapes[i], view[i], propertyGroup));
      }
    }
    return arr;
  }

  function contentsInterfaceFactory(shape, view, propertyGroup) {
    var interfaces;
    var interfaceFunction = function _interfaceFunction(value) {
      var i = 0, len = interfaces.length;
      while (i < len) {
        if (interfaces[i]._name === value || interfaces[i].mn === value || interfaces[i].propertyIndex === value || interfaces[i].ix === value || interfaces[i].ind === value) {
          return interfaces[i];
        }
        i += 1;
      }
      if (typeof value === 'number') {
        return interfaces[value - 1];
      }
    };

    interfaceFunction.propertyGroup = propertyGroupFactory(interfaceFunction, propertyGroup);
    interfaces = iterateElements(shape.it, view.it, interfaceFunction.propertyGroup);
    interfaceFunction.numProperties = interfaces.length;
    var transformInterface = transformInterfaceFactory(shape.it[shape.it.length - 1], view.it[view.it.length - 1], interfaceFunction.propertyGroup);
    interfaceFunction.transform = transformInterface;
    interfaceFunction.propertyIndex = shape.cix;
    interfaceFunction._name = shape.nm;

    return interfaceFunction;
  }

  function groupInterfaceFactory(shape, view, propertyGroup) {
    var interfaceFunction = function _interfaceFunction(value) {
      switch (value) {
        case 'ADBE Vectors Group':
        case 'Contents':
        case 2:
          return interfaceFunction.content;
          // Not necessary for now. Keeping them here in case a new case appears
          // case 'ADBE Vector Transform Group':
          // case 3:
        default:
          return interfaceFunction.transform;
      }
    };
    interfaceFunction.propertyGroup = propertyGroupFactory(interfaceFunction, propertyGroup);
    var content = contentsInterfaceFactory(shape, view, interfaceFunction.propertyGroup);
    var transformInterface = transformInterfaceFactory(shape.it[shape.it.length - 1], view.it[view.it.length - 1], interfaceFunction.propertyGroup);
    interfaceFunction.content = content;
    interfaceFunction.transform = transformInterface;
    Object.defineProperty(interfaceFunction, '_name', {
      get: function () {
        return shape.nm;
      },
    });
    // interfaceFunction.content = interfaceFunction;
    interfaceFunction.numProperties = shape.np;
    interfaceFunction.propertyIndex = shape.ix;
    interfaceFunction.nm = shape.nm;
    interfaceFunction.mn = shape.mn;
    return interfaceFunction;
  }

  function fillInterfaceFactory(shape, view, propertyGroup) {
    function interfaceFunction(val) {
      if (val === 'Color' || val === 'color') {
        return interfaceFunction.color;
      } else if (val === 'Opacity' || val === 'opacity') {
        return interfaceFunction.opacity;
      }
    }
    Object.defineProperties(interfaceFunction, {
      color: {
        get: ExpressionPropertyInterface(view.c),
      },
      opacity: {
        get: ExpressionPropertyInterface(view.o),
      },
      _name: { value: shape.nm },
      mn: { value: shape.mn },
    });

    view.c.setGroupProperty(PropertyInterface('Color', propertyGroup));
    view.o.setGroupProperty(PropertyInterface('Opacity', propertyGroup));
    return interfaceFunction;
  }

  function strokeInterfaceFactory(shape, view, propertyGroup) {
    var _propertyGroup = propertyGroupFactory(interfaceFunction, propertyGroup);
    var _dashPropertyGroup = propertyGroupFactory(dashOb, _propertyGroup);
    function addPropertyToDashOb(i) {
      Object.defineProperty(dashOb, shape.d[i].nm, {
        get: ExpressionPropertyInterface(view.d.dataProps[i].p),
      });
    }
    var i, len = shape.d ? shape.d.length : 0;
    var dashOb = {};
    for (i = 0; i < len; i += 1) {
      addPropertyToDashOb(i);
      view.d.dataProps[i].p.setGroupProperty(_dashPropertyGroup);
    }

    function interfaceFunction(val) {
      if (val === 'Color' || val === 'color') {
        return interfaceFunction.color;
      } else if (val === 'Opacity' || val === 'opacity') {
        return interfaceFunction.opacity;
      } else if (val === 'Stroke Width' || val === 'stroke width') {
        return interfaceFunction.strokeWidth;
      }
    }
    Object.defineProperties(interfaceFunction, {
      color: {
        get: ExpressionPropertyInterface(view.c),
      },
      opacity: {
        get: ExpressionPropertyInterface(view.o),
      },
      strokeWidth: {
        get: ExpressionPropertyInterface(view.w),
      },
      dash: {
        get: function () {
          return dashOb;
        },
      },
      _name: { value: shape.nm },
      mn: { value: shape.mn },
    });

    view.c.setGroupProperty(PropertyInterface('Color', _propertyGroup));
    view.o.setGroupProperty(PropertyInterface('Opacity', _propertyGroup));
    view.w.setGroupProperty(PropertyInterface('Stroke Width', _propertyGroup));
    return interfaceFunction;
  }

  function trimInterfaceFactory(shape, view, propertyGroup) {

    function interfaceFunction(val) {
      if (val === shape.e.ix || val === 'End' || val === 'end') {
        return interfaceFunction.end;
      }
      if (val === shape.s.ix) {
        return interfaceFunction.start;
      }
      if (val === shape.o.ix) {
        return interfaceFunction.offset;
      }
    }

    var _propertyGroup = propertyGroupFactory(interfaceFunction, propertyGroup);
    interfaceFunction.propertyIndex = shape.ix;

    view.s.setGroupProperty(PropertyInterface('Start', _propertyGroup));
    view.e.setGroupProperty(PropertyInterface('End', _propertyGroup));
    view.o.setGroupProperty(PropertyInterface('Offset', _propertyGroup));
    interfaceFunction.propertyIndex = shape.ix;
    interfaceFunction.propertyGroup = propertyGroup;

    Object.defineProperties(interfaceFunction, {
      start: {
        get: ExpressionPropertyInterface(view.s),
      },
      end: {
        get: ExpressionPropertyInterface(view.e),
      },
      offset: {
        get: ExpressionPropertyInterface(view.o),
      },
      _name: { value: shape.nm },
    });
    interfaceFunction.mn = shape.mn;
    return interfaceFunction;
  }

  function transformInterfaceFactory(shape, view, propertyGroup) {

    function interfaceFunction(value) {
      if (shape.a.ix === value || value === 'Anchor Point') {
        return interfaceFunction.anchorPoint;
      }
      if (shape.o.ix === value || value === 'Opacity') {
        return interfaceFunction.opacity;
      }
      if (shape.p.ix === value || value === 'Position') {
        return interfaceFunction.position;
      }
      if (shape.r.ix === value || value === 'Rotation' || value === 'ADBE Vector Rotation') {
        return interfaceFunction.rotation;
      }
      if (shape.s.ix === value || value === 'Scale') {
        return interfaceFunction.scale;
      }
      if (shape.sk && shape.sk.ix === value || value === 'Skew') {
        return interfaceFunction.skew;
      }
      if (shape.sa && shape.sa.ix === value || value === 'Skew Axis') {
        return interfaceFunction.skewAxis;
      }
    }

    var _propertyGroup = propertyGroupFactory(interfaceFunction, propertyGroup);
    view.transform.mProps.o.setGroupProperty(PropertyInterface('Opacity', _propertyGroup));
    view.transform.mProps.p.setGroupProperty(PropertyInterface('Position', _propertyGroup));
    view.transform.mProps.a.setGroupProperty(PropertyInterface('Anchor Point', _propertyGroup));
    view.transform.mProps.s.setGroupProperty(PropertyInterface('Scale', _propertyGroup));
    view.transform.mProps.r.setGroupProperty(PropertyInterface('Rotation', _propertyGroup));
    if (view.transform.mProps.sk) {
      view.transform.mProps.sk.setGroupProperty(PropertyInterface('Skew', _propertyGroup));
      view.transform.mProps.sa.setGroupProperty(PropertyInterface('Skew Angle', _propertyGroup));
    }
    view.transform.op.setGroupProperty(PropertyInterface('Opacity', _propertyGroup));
    Object.defineProperties(interfaceFunction, {
      opacity: {
        get: ExpressionPropertyInterface(view.transform.mProps.o),
      },
      position: {
        get: ExpressionPropertyInterface(view.transform.mProps.p),
      },
      anchorPoint: {
        get: ExpressionPropertyInterface(view.transform.mProps.a),
      },
      scale: {
        get: ExpressionPropertyInterface(view.transform.mProps.s),
      },
      rotation: {
        get: ExpressionPropertyInterface(view.transform.mProps.r),
      },
      skew: {
        get: ExpressionPropertyInterface(view.transform.mProps.sk),
      },
      skewAxis: {
        get: ExpressionPropertyInterface(view.transform.mProps.sa),
      },
      _name: { value: shape.nm },
    });
    interfaceFunction.ty = 'tr';
    interfaceFunction.mn = shape.mn;
    interfaceFunction.propertyGroup = propertyGroup;
    return interfaceFunction;
  }

  function ellipseInterfaceFactory(shape, view, propertyGroup) {

    function interfaceFunction(value) {
      if (shape.p.ix === value) {
        return interfaceFunction.position;
      }
      if (shape.s.ix === value) {
        return interfaceFunction.size;
      }
    }
    var _propertyGroup = propertyGroupFactory(interfaceFunction, propertyGroup);
    interfaceFunction.propertyIndex = shape.ix;
    var prop = view.sh.ty === 'tm' ? view.sh.prop : view.sh;
    prop.s.setGroupProperty(PropertyInterface('Size', _propertyGroup));
    prop.p.setGroupProperty(PropertyInterface('Position', _propertyGroup));

    Object.defineProperties(interfaceFunction, {
      size: {
        get: ExpressionPropertyInterface(prop.s),
      },
      position: {
        get: ExpressionPropertyInterface(prop.p),
      },
      _name: { value: shape.nm },
    });
    interfaceFunction.mn = shape.mn;
    return interfaceFunction;
  }

  function starInterfaceFactory(shape, view, propertyGroup) {

    function interfaceFunction(value) {
      if (shape.p.ix === value) {
        return interfaceFunction.position;
      }
      if (shape.r.ix === value) {
        return interfaceFunction.rotation;
      }
      if (shape.pt.ix === value) {
        return interfaceFunction.points;
      }
      if (shape.or.ix === value || value === 'ADBE Vector Star Outer Radius') {
        return interfaceFunction.outerRadius;
      }
      if (shape.os.ix === value) {
        return interfaceFunction.outerRoundness;
      }
      if (shape.ir && (shape.ir.ix === value || value === 'ADBE Vector Star Inner Radius')) {
        return interfaceFunction.innerRadius;
      }
      if (shape.is && shape.is.ix === value) {
        return interfaceFunction.innerRoundness;
      }

    }

    var _propertyGroup = propertyGroupFactory(interfaceFunction, propertyGroup);
    var prop = view.sh.ty === 'tm' ? view.sh.prop : view.sh;
    interfaceFunction.propertyIndex = shape.ix;
    prop.or.setGroupProperty(PropertyInterface('Outer Radius', _propertyGroup));
    prop.os.setGroupProperty(PropertyInterface('Outer Roundness', _propertyGroup));
    prop.pt.setGroupProperty(PropertyInterface('Points', _propertyGroup));
    prop.p.setGroupProperty(PropertyInterface('Position', _propertyGroup));
    prop.r.setGroupProperty(PropertyInterface('Rotation', _propertyGroup));
    if (shape.ir) {
      prop.ir.setGroupProperty(PropertyInterface('Inner Radius', _propertyGroup));
      prop.is.setGroupProperty(PropertyInterface('Inner Roundness', _propertyGroup));
    }

    Object.defineProperties(interfaceFunction, {
      position: {
        get: ExpressionPropertyInterface(prop.p),
      },
      rotation: {
        get: ExpressionPropertyInterface(prop.r),
      },
      points: {
        get: ExpressionPropertyInterface(prop.pt),
      },
      outerRadius: {
        get: ExpressionPropertyInterface(prop.or),
      },
      outerRoundness: {
        get: ExpressionPropertyInterface(prop.os),
      },
      innerRadius: {
        get: ExpressionPropertyInterface(prop.ir),
      },
      innerRoundness: {
        get: ExpressionPropertyInterface(prop.is),
      },
      _name: { value: shape.nm },
    });
    interfaceFunction.mn = shape.mn;
    return interfaceFunction;
  }

  function rectInterfaceFactory(shape, view, propertyGroup) {

    function interfaceFunction(value) {
      if (shape.p.ix === value) {
        return interfaceFunction.position;
      }
      if (shape.r.ix === value) {
        return interfaceFunction.roundness;
      }
      if (shape.s.ix === value || value === 'Size' || value === 'ADBE Vector Rect Size') {
        return interfaceFunction.size;
      }

    }
    var _propertyGroup = propertyGroupFactory(interfaceFunction, propertyGroup);

    var prop = view.sh.ty === 'tm' ? view.sh.prop : view.sh;
    interfaceFunction.propertyIndex = shape.ix;
    prop.p.setGroupProperty(PropertyInterface('Position', _propertyGroup));
    prop.s.setGroupProperty(PropertyInterface('Size', _propertyGroup));
    prop.r.setGroupProperty(PropertyInterface('Rotation', _propertyGroup));

    Object.defineProperties(interfaceFunction, {
      position: {
        get: ExpressionPropertyInterface(prop.p),
      },
      roundness: {
        get: ExpressionPropertyInterface(prop.r),
      },
      size: {
        get: ExpressionPropertyInterface(prop.s),
      },
      _name: { value: shape.nm },
    });
    interfaceFunction.mn = shape.mn;
    return interfaceFunction;
  }

  function roundedInterfaceFactory(shape, view, propertyGroup) {

    function interfaceFunction(value) {
      if (shape.r.ix === value || value === 'Round Corners 1') {
        return interfaceFunction.radius;
      }
    }

    var _propertyGroup = propertyGroupFactory(interfaceFunction, propertyGroup);
    var prop = view;
    interfaceFunction.propertyIndex = shape.ix;
    prop.rd.setGroupProperty(PropertyInterface('Radius', _propertyGroup));

    Object.defineProperties(interfaceFunction, {
      radius: {
        get: ExpressionPropertyInterface(prop.rd),
      },
      _name: { value: shape.nm },
    });
    interfaceFunction.mn = shape.mn;
    return interfaceFunction;
  }

  function repeaterInterfaceFactory(shape, view, propertyGroup) {

    function interfaceFunction(value) {
      if (shape.c.ix === value || value === 'Copies') {
        return interfaceFunction.copies;
      } else if (shape.o.ix === value || value === 'Offset') {
        return interfaceFunction.offset;
      }
    }

    var _propertyGroup = propertyGroupFactory(interfaceFunction, propertyGroup);
    var prop = view;
    interfaceFunction.propertyIndex = shape.ix;
    prop.c.setGroupProperty(PropertyInterface('Copies', _propertyGroup));
    prop.o.setGroupProperty(PropertyInterface('Offset', _propertyGroup));
    Object.defineProperties(interfaceFunction, {
      copies: {
        get: ExpressionPropertyInterface(prop.c),
      },
      offset: {
        get: ExpressionPropertyInterface(prop.o),
      },
      _name: { value: shape.nm },
    });
    interfaceFunction.mn = shape.mn;
    return interfaceFunction;
  }

  return function (shapes, view, propertyGroup) {
    var interfaces;
    function _interfaceFunction(value) {
      if (typeof value === 'number') {
        value = value === undefined ? 1 : value;
        if (value === 0) {
          return propertyGroup;
        } else {
          return interfaces[value - 1];
        }
      } else {
        var i = 0, len = interfaces.length;
        while (i < len) {
          if (interfaces[i]._name === value) {
            return interfaces[i];
          }
          i += 1;
        }
      }
    }
    function parentGroupWrapper() {
      return propertyGroup;
    }
    _interfaceFunction.propertyGroup = propertyGroupFactory(_interfaceFunction, parentGroupWrapper);
    interfaces = iterateElements(shapes, view, _interfaceFunction.propertyGroup);
    _interfaceFunction.numProperties = interfaces.length;
    _interfaceFunction._name = 'Contents';
    return _interfaceFunction;
  };
}());