/**
 * Material Superset - The apiMaterial properties get moved into the Material object itself, and then the instance is
 * created
 * @param graphics GameLib.D3.Graphics
 * @param apiMaterial GameLib.D3.API.Material
 * @param imageFactory GameLib.D3.ImageFactory
 * @constructor
 * @returns {GameLib.D3.Material | GameLib.D3.API.Material}
 */
GameLib.D3.Material = function Material(
    graphics,
    apiMaterial,
    imageFactory
) {

    this.graphics = graphics;
    this.graphics.isNotThreeThrow();
    
    GameLib.D3.API.Material.call(
        this,
		apiMaterial.id,
		apiMaterial.materialType,
		apiMaterial.name,
		apiMaterial.opacity,
		apiMaterial.side,
		apiMaterial.transparent,
		apiMaterial.specular,
		apiMaterial.lightMapIntensity,
		apiMaterial.aoMapIntensity,
		apiMaterial.color,
		apiMaterial.emissive,
		apiMaterial.emissiveIntensity,
		apiMaterial.combine,
		apiMaterial.shininess,
		apiMaterial.reflectivity,
		apiMaterial.refractionRatio,
		apiMaterial.fog,
		apiMaterial.wireframe,
		apiMaterial.wireframeLineWidth,
		apiMaterial.wireframeLineCap,
		apiMaterial.wireframeLineJoin,
		apiMaterial.vertexColors,
		apiMaterial.skinning,
		apiMaterial.morphTargets,
		apiMaterial.morphNormals,
		apiMaterial.lineWidth,
		apiMaterial.lineCap,
		apiMaterial.lineJoin,
		apiMaterial.dashSize,
		apiMaterial.gapWidth,
		apiMaterial.blending,
		apiMaterial.blendSrc,
		apiMaterial.blendDst,
		apiMaterial.blendEquation,
		apiMaterial.depthTest,
		apiMaterial.depthFunc,
		apiMaterial.depthWrite,
		apiMaterial.polygonOffset,
		apiMaterial.polygonOffsetFactor,
		apiMaterial.polygonOffsetUnits,
		apiMaterial.alphaTest,
		apiMaterial.clippingPlanes,
		apiMaterial.clipShadows,
		apiMaterial.visible,
		apiMaterial.overdraw,
		apiMaterial.shading,
		apiMaterial.bumpScale,
		apiMaterial.normalScale,
		apiMaterial.displacementScale,
		apiMaterial.displacementBias,
		apiMaterial.roughness,
		apiMaterial.metalness,
		apiMaterial.pointSize,
		apiMaterial.pointSizeAttenuation,
		apiMaterial.spriteRotation,
		apiMaterial.envMapIntensity,
		apiMaterial.alphaMap,
		apiMaterial.aoMap,
		apiMaterial.bumpMap,
		apiMaterial.diffuseMap,
		apiMaterial.displacementMap,
		apiMaterial.emissiveMap,
		apiMaterial.environmentMap,
		apiMaterial.lightMap,
		apiMaterial.metalnessMap,
		apiMaterial.normalMap,
		apiMaterial.roughnessMap,
		apiMaterial.specularMap,
		apiMaterial.parentEntity
    );

    this.specular = new GameLib.Color(
        graphics,
        this,
        this.specular
    );

    this.color = new GameLib.Color(
        graphics,
        this,
        this.color
    );

    this.emissive = new GameLib.Color(
        graphics,
        this,
        this.emissive
    );

    if (this.alphaMap) {
        this.alphaMap = new GameLib.D3.Texture(
            this.graphics,
            this.alphaMap,
            this,
            'alphaMap',
            imageFactory
        );
    }

    if (this.aoMap) {
        this.aoMap = new GameLib.D3.Texture(
            this.graphics,
            this.aoMap,
            this,
            'aoMap',
            imageFactory
        );
    }

    if (this.bumpMap) {
        this.bumpMap = new GameLib.D3.Texture(
            this.graphics,
            this.bumpMap,
            this,
            'bumpMap',
            imageFactory
        );
    }

    if (this.diffuseMap) {
        this.diffuseMap = new GameLib.D3.Texture(
            this.graphics,
            this.diffuseMap,
            this,
            'map',
            imageFactory
        );
    }

    if (this.displacementMap) {
        this.displacementMap = new GameLib.D3.Texture(
            this.graphics,
            this.displacementMap,
            this,
            'displacementMap',
            imageFactory
        );
    }

    if (this.emissiveMap) {
        this.emissiveMap = new GameLib.D3.Texture(
            this.graphics,
            this.emissiveMap,
            this,
            'emissiveMap',
            imageFactory
        );
    }

    if (this.environmentMap) {
        this.environmentMap = new GameLib.D3.Texture(
            this.graphics,
            this.environmentMap,
            this,
            'envMap',
            imageFactory
        );
    }

    if (this.lightMap) {
        this.lightMap = new GameLib.D3.Texture(
            this.graphics,
            this.lightMap,
            this,
            'lightMap',
            imageFactory
        );
    }

    if (this.metalnessMap) {
        this.metalnessMap = new GameLib.D3.Texture(
            this.graphics,
            this.metalnessMap,
            this,
            'metalnessMap',
            imageFactory
        );
    }

    if (this.normalMap) {
        this.normalMap = new GameLib.D3.Texture(
            this.graphics,
            this.normalMap,
            this,
            'normalMap',
            imageFactory
        );
    }

    if (this.roughnessMap) {
        this.roughnessMap = new GameLib.D3.Texture(
            this.graphics,
            this.roughnessMap,
            this,
            'roughnessMap',
            imageFactory
        );
    }

    if (this.specularMap) {
        this.specularMap = new GameLib.D3.Texture(
            this.graphics,
            this.specularMap,
            this,
            'specularMap',
            imageFactory
        );
    }

    this.instance = this.createInstance();

};

GameLib.D3.Material.prototype = Object.create(GameLib.D3.API.Material.prototype);
GameLib.D3.Material.prototype.constructor = GameLib.D3.Material;

/**
 * Combine Method
 * @type {number}
 */
GameLib.D3.Material.TYPE_MULTIPLY_OPERATION = 0;
GameLib.D3.Material.TYPE_MIX_OPERATION = 1;
GameLib.D3.Material.TYPE_ADD_OPERATION = 2;

/**
 * Vertex Color Mode
 * @type {number}
 */
GameLib.D3.Material.TYPE_NO_COLORS = 0;
GameLib.D3.Material.TYPE_FACE_COLORS = 1;
GameLib.D3.Material.TYPE_VERTEX_COLORS = 2;

/**
 * Blending Mode
 * @type {number}
 */
GameLib.D3.Material.TYPE_NORMAL_BLENDING = 1;
GameLib.D3.Material.TYPE_ADDITIVE_BLENDING = 2;
GameLib.D3.Material.TYPE_SUBTRACTIVE_BLENDING = 3;
GameLib.D3.Material.TYPE_MULTIPLY_BLENDING = 4;
GameLib.D3.Material.TYPE_CUSTOM_BLENDING = 5;

/**
 * Blend Source and Destination
 * @type {number}
 */
GameLib.D3.Material.TYPE_ZERO_FACTOR = 200;
GameLib.D3.Material.TYPE_ONE_FACTOR = 201;
GameLib.D3.Material.TYPE_SRC_COLOR_FACTOR = 202;
GameLib.D3.Material.TYPE_ONE_MINUS_SRC_COLOR_FACTOR = 203;
GameLib.D3.Material.TYPE_SRC_ALPHA_FACTOR = 204;
GameLib.D3.Material.TYPE_ONE_MINUS_SRC_ALPHA_FACTOR = 205;
GameLib.D3.Material.TYPE_DST_ALPHA_FACTOR = 206;
GameLib.D3.Material.TYPE_ONE_MINUS_DST_ALPHA_FACTOR = 207;
GameLib.D3.Material.TYPE_DST_COLOR_FACTOR = 208;
GameLib.D3.Material.TYPE_ONE_MINUS_DST_COLOR_FACTOR = 209;
GameLib.D3.Material.TYPE_SRC_ALPHA_SATURATE_FACTOR = 210;

/**
 * Blend Operation
 * @type {number}
 */
GameLib.D3.Material.TYPE_ADD_EQUATION = 100;
GameLib.D3.Material.TYPE_SUBTRACT_EQUATION = 101;
GameLib.D3.Material.TYPE_REVERSE_SUBTRACT_EQUATION = 102;
GameLib.D3.Material.TYPE_MIN_EQUATION = 103;
GameLib.D3.Material.TYPE_MAX_EQUATION = 104;

/**
 * Depth Function
 * @type {number}
 */
GameLib.D3.Material.TYPE_NEVER_DEPTH = 0;
GameLib.D3.Material.TYPE_ALWAYS_DEPTH = 1;
GameLib.D3.Material.TYPE_LESS_DEPTH = 2;
GameLib.D3.Material.TYPE_LESS_EQUAL_DEPTH = 3;
GameLib.D3.Material.TYPE_EQUAL_DEPTH = 4;
GameLib.D3.Material.TYPE_GREATER_EQUAL_DEPTH = 5;
GameLib.D3.Material.TYPE_GREATER_DEPTH = 6;
GameLib.D3.Material.TYPE_NOT_EQUAL_DEPTH = 7;

/**
 * Culling Mode
 * @type {number}
 */
GameLib.D3.Material.TYPE_FRONT_SIDE = 0;
GameLib.D3.Material.TYPE_BACK_SIDE = 1;
GameLib.D3.Material.TYPE_DOUBLE_SIDE = 2;

/**
 * Shading Type
 * @type {number}
 */
GameLib.D3.Material.TYPE_FLAT_SHADING = 1;
GameLib.D3.Material.TYPE_SMOOTH_SHADING = 2;

/**
 * Material Type
 * @type {string}
 */
GameLib.D3.Material.MATERIAL_TYPE_LINE_BASIC    = "LineBasicMaterial";
GameLib.D3.Material.MATERIAL_TYPE_LINE_DASHED   = "LineDashedMaterial";
GameLib.D3.Material.MATERIAL_TYPE_BASIC         = "MeshBasicMaterial";
GameLib.D3.Material.MATERIAL_TYPE_DEPTH         = "MeshDepthMaterial";
GameLib.D3.Material.MATERIAL_TYPE_LAMBERT       = "MeshLambertMaterial";
GameLib.D3.Material.MATERIAL_TYPE_NORMAL        = "MeshNormalMaterial";
GameLib.D3.Material.MATERIAL_TYPE_PHONG         = "MeshPhongMaterial";
GameLib.D3.Material.MATERIAL_TYPE_STANDARD      = "MeshStandardMaterial";
GameLib.D3.Material.MATERIAL_TYPE_POINTS        = "PointsMaterial";
GameLib.D3.Material.MATERIAL_TYPE_SPRITE        = "SpriteMaterial";
GameLib.D3.Material.MATERIAL_TYPE_MULTIPLE      = "MultiMaterial";

/**
 * Material instance
 * @returns {*}
 */
GameLib.D3.Material.prototype.createInstance = function(update) {

    var instance = null;

    if (update) {
        instance = this.instance;
    }

    if (!instance) {

        if (this.materialType == GameLib.D3.Material.MATERIAL_TYPE_STANDARD) {

            instance = new THREE.MeshStandardMaterial({
                name: this.name,
                opacity: this.opacity,
                transparent: this.transparent,
                blending: this.blending,
                blendSrc: this.blendSrc,
                blendDst: this.blendDst,
                blendEquation: this.blendEquation,
                depthTest: this.depthTest,
                depthFunc: this.depthFunc,
                depthWrite: this.depthWrite,
                polygonOffset: this.polygonOffset,
                polygonOffsetFactor: this.polygonOffsetFactor,
                polygonOffsetUnits: this.polygonOffsetUnits,
                alphaTest: this.alphaTest,
                clippingPlanes: this.clippingPlanes,
                clipShadows: this.clipShadows,
                overdraw: this.overdraw,
                visible: this.visible,
                side: this.side,
                color: this.color.instance,
                roughness: this.roughness,
                metalness: this.metalness,
                lightMapIntensity: this.lightMapIntensity,
                aoMapIntensity: this.aoMapIntensity,
                emissive: this.emissive.instance,
                emissiveIntensity: this.emissiveIntensity,
                bumpScale: this.bumpScale,
                normalScale: this.normalScale,
                displacementScale: this.displacementScale,
                refractionRatio: this.refractionRatio,
                fog: this.fog,
                shading: this.shading,
                wireframe: this.wireframe,
                wireframeLinewidth: this.wireframeLineWidth,
                wireframeLinecap: this.wireframeLineCap,
                wireframeLinejoin: this.wireframeLineJoin,
                vertexColors: this.vertexColors,
                skinning: this.skinning,
                morphTargets: this.morphTargets,
                morphNormals: this.morphNormals
            });

        } else if (this.materialType == GameLib.D3.Material.MATERIAL_TYPE_PHONG) {

            instance = new THREE.MeshPhongMaterial({
                name: this.name,
                opacity: this.opacity,
                transparent: this.transparent,
                blending: this.blending,
                blendSrc: this.blendSrc,
                blendDst: this.blendDst,
                blendEquation: this.blendEquation,
                depthTest: this.depthTest,
                depthFunc: this.depthFunc,
                depthWrite: this.depthWrite,
                polygonOffset: this.polygonOffset,
                polygonOffsetFactor: this.polygonOffsetFactor,
                polygonOffsetUnits: this.polygonOffsetUnits,
                alphaTest: this.alphaTest,
                clippingPlanes: this.clippingPlanes,
                clipShadows: this.clipShadows,
                overdraw: this.overdraw,
                visible: this.visible,
                side: this.side,
                color: this.color.instance,
                specular: this.specular.instance,
                shininess: this.shininess,
                lightMapIntensity: this.lightMapIntensity,
                aoMapIntensity: this.aoMapIntensity,
                emissive: this.emissive.instance,
                emissiveIntensity: this.emissiveIntensity,
                bumpScale: this.bumpScale,
                normalScale: this.normalScale,
                displacementScale: this.displacementScale,
                combine: this.combine,
                refractionRatio: this.refractionRatio,
                fog: this.fog,
                shading: this.shading,
                wireframe: this.wireframe,
                wireframeLinewidth: this.wireframeLineWidth,
                wireframeLinecap: this.wireframeLineCap,
                wireframeLinejoin: this.wireframeLineJoin,
                vertexColors: this.vertexColors,
                skinning: this.skinning,
                morphTargets: this.morphTargets,
                morphNormals: this.morphNormals
            });
        } else if (this.materialType == GameLib.D3.Material.MATERIAL_TYPE_POINTS) {

            instance = new this.graphics.instance.PointsMaterial({
                name: this.name,
                opacity: this.opacity,
                transparent: this.transparent,
                blending: this.blending,
                blendSrc: this.blendSrc,
                blendDst: this.blendDst,
                blendEquation: this.blendEquation,
                depthTest: this.depthTest,
                depthFunc: this.depthFunc,
                depthWrite: this.depthWrite,
                polygonOffset: this.polygonOffset,
                polygonOffsetFactor: this.polygonOffsetFactor,
                polygonOffsetUnits: this.polygonOffsetUnits,
                alphaTest: this.alphaTest,
                clippingPlanes: this.clippingPlanes,
                clipShadows: this.clipShadows,
                overdraw: this.overdraw,
                visible: this.visible,
                side: this.side,
                color: this.color.instance,
                size: this.pointSize,
                sizeAttenuation: this.pointSizeAttenuation,
                vertexColors: GameLib.D3.Material.TYPE_NO_COLORS,
                fog: this.fog
            });

        } else if (this.materialType == GameLib.D3.Material.MATERIAL_TYPE_BASIC) {

            instance = new THREE.MeshBasicMaterial({
                name: this.name,
                opacity: this.opacity,
                transparent: this.transparent,
                blending: this.blending,
                blendSrc: this.blendSrc,
                blendDst: this.blendDst,
                blendEquation: this.blendEquation,
                depthTest: this.depthTest,
                depthFunc: this.depthFunc,
                depthWrite: this.depthWrite,
                polygonOffset: this.polygonOffset,
                polygonOffsetFactor: this.polygonOffsetFactor,
                polygonOffsetUnits: this.polygonOffsetUnits,
                alphaTest: this.alphaTest,
                clippingPlanes: this.clippingPlanes,
                clipShadows: this.clipShadows,
                overdraw: this.overdraw,
                visible: this.visible,
                side: this.side,
                color: this.color.instance,
                vertexColors: GameLib.D3.Material.TYPE_NO_COLORS,
                fog: this.fog
            });

        } else {
            console.log("material type is not implemented yet: " + this.materialType + " - material indexes could be screwed up");
        }
    }
 
    if (update) {

        for (var property in instance) {
            if (instance.hasOwnProperty(property)) {

                if (property == 'alphaMap') {
                    if (this.alphaMap) {
                        instance.alphaMap = this.alphaMap.instance;
                    }
                }
                else if (property == 'aoMap') {
                    if (this.aoMap) {
                        instance.aoMap = this.aoMap.instance;
                    }
                }
                else if (property == 'bumpMap') {
                    if (this.bumpMap) {
                        instance.bumpMap = this.bumpMap.instance;
                    }
                }
                else if (property == 'map') {
                    if (this.diffuseMap) {
                        instance.map = this.diffuseMap.instance;
                    }
                }
                else if (property == 'displacementMap') {
                    if (this.displacementMap) {
                        instance.displacementMap = this.displacementMap.instance;
                    }
                }
                else if (property == 'emissiveMap') {
                    if (this.emissiveMap) {
                        instance.emissiveMap = this.emissiveMap.instance;
                    }
                }
                else if (property == 'envMap') {
                    if (this.environmentMap) {
                        instance.envMap = this.environmentMap.instance;
                    }
                }
                else if (property == 'lightMap') {
                    if (this.lightMap) {
                        instance.lightMap = this.lightMap.instance;
                    }
                }
                else if (property == 'metalnessMap') {
                    if (this.metalnessMap) {
                        instance.metalnessMap = this.metalnessMap.instance;
                    }
                }
                else if (property == 'normalMap') {
                    if (this.normalMap) {
                        instance.normalMap = this.normalMap.instance;
                    }
                }
                else if (property == 'roughnessMap') {
                    if (this.roughnessMap) {
                        instance.roughnessMap = this.roughnessMap.instance;
                    }
                }
                else if (property == 'specularMap') {
                    if (this.specularMap) {
                        instance.specularMap = this.specularMap.instance;
                    }
                }
                else if (property == 'size') {
                    instance.size = this.pointSize;
                }
                else if (property == 'sizeAttenuation') {
                    instance.sizeAttenuation = this.pointSizeAttenuation;
                }
                else if (instance[property] instanceof THREE.Color) {
                    instance[property].copy(this[property])
                } else if (this.hasOwnProperty(property)) {
                    instance[property] = this[property];
                }
            }
        }

        instance.needsUpdate = true;
    }
    
    return instance;
};

/**
 * Updates the instance with the current state
 */
GameLib.D3.Material.prototype.updateInstance = function() {
    this.instance = this.createInstance(true);
};

GameLib.D3.Material.prototype.clone = function() {
    return _.cloneDeep(this);
};

/**
 * Converts a GameLib.D3.Material to a GameLib.D3.API.Material
 * @returns {GameLib.D3.API.Material}
 */
GameLib.D3.Material.prototype.toApiMaterial = function() {

    var apiAlphaMap = null;
    if (this.alphaMap) {
        apiAlphaMap = this.alphaMap.toApiTexture();
    }

    var apiAoMap = null;
    if (this.aoMap) {
        apiAoMap = this.aoMap.toApiTexture();
    }

    var apiBumpMap = null;
    if (this.bumpMap) {
        apiBumpMap = this.bumpMap.toApiTexture();
    }

    var apiDiffuseMap = null;
    if (this.diffuseMap) {
        apiDiffuseMap = this.diffuseMap.toApiTexture();
    }

    var apiDisplacementMap = null;
    if (this.displacementMap) {
        apiDisplacementMap = this.displacementMap.toApiTexture();
    }

    var apiEmissiveMap = null;
    if (this.emissiveMap) {
        apiEmissiveMap = this.emissiveMap.toApiTexture();
    }

    var apiEnvironmentMap = null;
    if (this.environmentMap) {
        apiEnvironmentMap = this.environmentMap.toApiTexture();
    }

    var apiLightMap = null;
    if (this.lightMap) {
        apiLightMap = this.lightMap.toApiTexture();
    }

    var apiMetalnessMap = null;
    if (this.metalnessMap) {
        apiMetalnessMap = this.metalnessMap.toApiTexture();
    }

    var apiNormalMap = null;
    if (this.normalMap) {
        apiNormalMap = this.normalMap.toApiTexture();
    }

    var apiRoughnessMap = null;
    if (this.roughnessMap) {
        apiRoughnessMap = this.roughnessMap.toApiTexture();
    }

    var apiSpecularMap = null;
    if (this.specularMap) {
        apiSpecularMap = this.specularMap.toApiTexture();
    }
    
    return new GameLib.D3.API.Material(
        this.id,
        this.materialType,
        this.name,
        this.opacity,
        this.side,
        this.transparent,
        this.specular.toApiColor(),
        this.lightMapIntensity,
        this.aoMapIntensity,
        this.color.toApiColor(),
        this.emissive.toApiColor(),
        this.emissiveIntensity,
        this.combine,
        this.shininess,
        this.reflectivity,
        this.refractionRatio,
        this.fog,
        this.wireframe,
        this.wireframeLineWidth,
        this.wireframeLineCap,
        this.wireframeLineJoin,
        this.vertexColors,
        this.skinning,
        this.morphTargets,
        this.morphNormals,
        this.lineWidth,
        this.lineCap,
        this.lineJoin,
        this.dashSize,
        this.gapWidth,
        this.blending,
        this.blendSrc,
        this.blendDst,
        this.blendEquation,
        this.depthTest,
        this.depthFunc,
        this.depthWrite,
        this.polygonOffset,
        this.polygonOffsetFactor,
        this.polygonOffsetUnits,
        this.alphaTest,
        this.clippingPlanes,
        this.clipShadows,
        this.visible,
        this.overdraw,
        this.shading,
        this.bumpScale,
        this.normalScale,
        this.displacementScale,
        this.displacementBias,
        this.roughness,
        this.metalness,
        this.pointSize,
        this.pointSizeAttenuation,
        this.spriteRotation,
        this.envMapIntensity,
		apiAlphaMap,
		apiAoMap,
		apiBumpMap,
		apiDiffuseMap,
		apiDisplacementMap,
		apiEmissiveMap,
		apiEnvironmentMap,
		apiLightMap,
		apiMetalnessMap,
		apiNormalMap,
		apiRoughnessMap,
		apiSpecularMap,
        GameLib.Utils.IdOrNull(this.parentEntity)
    );
};

/**
 * Creates a GameLib.D3.Material from a material Object
 * @param graphics GameLib.D3.Graphics
 * @param objectMaterial Object
 * @param imageFactory GameLib.D3.ImageFactory
 * @constructor
 */
GameLib.D3.Material.FromObjectMaterial = function(graphics, objectMaterial, imageFactory) {
    
    var gameLibMaterial = new GameLib.D3.Material(
        graphics,
        GameLib.D3.API.Material.FromObjectMaterial(objectMaterial),
        imageFactory
    );

    return gameLibMaterial;
};