var LayerExpressionInterface = (function (){
    function toWorld(arr, time){
        var toWorldMat = new Matrix();
        toWorldMat.reset();
        var transformMat;
        if(time) {
            //Todo implement value at time on transform properties
            //transformMat = this._elem.finalTransform.mProp.getValueAtTime(time);
            transformMat = this._elem.finalTransform.mProp;
        } else {
            transformMat = this._elem.finalTransform.mProp;
        }
        transformMat.applyToMatrix(toWorldMat);
        if(this._elem.hierarchy && this._elem.hierarchy.length){
            var i, len = this._elem.hierarchy.length;
            for(i=0;i<len;i+=1){
                this._elem.hierarchy[i].finalTransform.mProp.applyToMatrix(toWorldMat);
            }
            return toWorldMat.applyToPointArray(arr[0],arr[1],arr[2]||0);
        }
        return toWorldMat.applyToPointArray(arr[0],arr[1],arr[2]||0);
    }
    function fromWorld(arr, time){
        var toWorldMat = new Matrix();
        toWorldMat.reset();
        var transformMat;
        if(time) {
            //Todo implement value at time on transform properties
            //transformMat = this._elem.finalTransform.mProp.getValueAtTime(time);
            transformMat = this._elem.finalTransform.mProp;
        } else {
            transformMat = this._elem.finalTransform.mProp;
        }
        transformMat.applyToMatrix(toWorldMat);
        if(this._elem.hierarchy && this._elem.hierarchy.length){
            var i, len = this._elem.hierarchy.length;
            for(i=0;i<len;i+=1){
                this._elem.hierarchy[i].finalTransform.mProp.applyToMatrix(toWorldMat);
            }
            return toWorldMat.inversePoint(arr);
        }
        return toWorldMat.inversePoint(arr);
    }
    function fromComp(arr){
        var toWorldMat = new Matrix();
        toWorldMat.reset();
        this._elem.finalTransform.mProp.applyToMatrix(toWorldMat);
        if(this._elem.hierarchy && this._elem.hierarchy.length){
            var i, len = this._elem.hierarchy.length;
            for(i=0;i<len;i+=1){
                this._elem.hierarchy[i].finalTransform.mProp.applyToMatrix(toWorldMat);
            }
            return toWorldMat.inversePoint(arr);
        }
        return toWorldMat.inversePoint(arr);
    }

    function sampleImage() {
        return [1,1,1,1];
    }


    return function(elem){

        var transformInterface;

        function _registerMaskInterface(maskManager){
            _thisLayerFunction.mask = new MaskManagerInterface(maskManager, elem);
        }
        function _registerEffectsInterface(effects){
            _thisLayerFunction.effect = effects;
        }

        function _thisLayerFunction(name){
            switch(name){
                case "ADBE Root Vectors Group":
                case "Contents":
                case 2:
                    return _thisLayerFunction.shapeInterface;
                case 1:
                case 6:
                case "Transform":
                case "transform":
                case "ADBE Transform Group":
                    return transformInterface;
                case 4:
                case "ADBE Effect Parade":
                    return _thisLayerFunction.effect;
            }
        }
        _thisLayerFunction.toWorld = toWorld;
        _thisLayerFunction.fromWorld = fromWorld;
        _thisLayerFunction.toComp = toWorld;
        _thisLayerFunction.fromComp = fromComp;
        _thisLayerFunction.sampleImage = sampleImage;
        _thisLayerFunction.sourceRectAtTime = elem.sourceRectAtTime.bind(elem);
        _thisLayerFunction._elem = elem;
        transformInterface = TransformExpressionInterface(elem.finalTransform.mProp);
        var anchorPointDescriptor = getDescriptor(transformInterface, 'anchorPoint');
        Object.defineProperties(_thisLayerFunction,{
            hasParent: {
                get: function(){
                    return elem.hierarchy.length;
                }
            },
            parent: {
                get: function(){
                    return elem.hierarchy[0].layerInterface;
                }
            },
            rotation: getDescriptor(transformInterface, 'rotation'),
            scale: getDescriptor(transformInterface, 'scale'),
            position: getDescriptor(transformInterface, 'position'),
            opacity: getDescriptor(transformInterface, 'opacity'),
            anchorPoint: anchorPointDescriptor,
            anchor_point: anchorPointDescriptor,
            transform: {
                get: function () {
                    return transformInterface;
                }
            },
            active: {
                get: function(){
                    return elem.isInRange;
                }
            }
        });

        _thisLayerFunction.startTime = elem.data.st;
        _thisLayerFunction.index = elem.data.ind;
        _thisLayerFunction.source = elem.data.refId;
        _thisLayerFunction.height = elem.data.ty === 0 ? elem.data.h : 100;
        _thisLayerFunction.width = elem.data.ty === 0 ? elem.data.w : 100;
        _thisLayerFunction.inPoint = elem.data.ip/elem.comp.globalData.frameRate;
        _thisLayerFunction.outPoint = elem.data.op/elem.comp.globalData.frameRate;
        _thisLayerFunction._name = elem.data.nm;

        _thisLayerFunction.registerMaskInterface = _registerMaskInterface;
        _thisLayerFunction.registerEffectsInterface = _registerEffectsInterface;
        return _thisLayerFunction;
    };
}());