/**
 * Light Superset - The apiLight properties get moved into the Light object itself, and then the instance is created
 * @param graphics GameLib.D3.Graphics
 * @param apiLight GameLib.D3.API.Light
 * @constructor
 */
GameLib.D3.Light = function Light(
    graphics,
    apiLight
) {
    for (var property in apiLight) {
        if (apiLight.hasOwnProperty(property)) {
            this[property] = apiLight[property];
        }
    }

    this.graphics = graphics;
    this.graphics.isNotThreeThrow();

    this.instance = this.createInstance();
};

/**
 * Light Types
 * @type {number}
 */
GameLib.D3.Light.LIGHT_TYPE_AMBIENT     = 0x1;
GameLib.D3.Light.LIGHT_TYPE_DIRECTIONAL = 0x2;
GameLib.D3.Light.LIGHT_TYPE_POINT       = 0x3;
GameLib.D3.Light.LIGHT_TYPE_SPOT        = 0x4;

/**
 * Creates a light instance
 * @returns {*}
 */
GameLib.D3.Light.prototype.createInstance = function(update) {

    var instance = null;

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

    if ((!instance) ||
        (instance && instance.lightType != this.lightType)) {

        if (this.lightType == GameLib.D3.Light.LIGHT_TYPE_AMBIENT) {
            instance = new this.graphics.instance.AmbientLight(
                new this.graphics.instance.Color(
                    this.color.r,
                    this.color.g,
                    this.color.b
                ),
                this.intensity
            );
        }

        if (this.lightType == GameLib.D3.Light.LIGHT_TYPE_DIRECTIONAL) {
            instance = new this.graphics.instance.DirectionalLight(
                new this.graphics.instance.Color(
                    this.color.r,
                    this.color.g,
                    this.color.b
                ),
                this.intensity
            );
        }

        if (this.lightType == GameLib.D3.Light.LIGHT_TYPE_POINT) {
            instance = new this.graphics.instance.PointLight(
                new this.graphics.instance.Color(
                    this.color.r,
                    this.color.g,
                    this.color.b
                ),
                this.intensity
            );
            instance.distance = this.distance;
            instance.decay = this.decay;
        }

        if (this.lightType == GameLib.D3.Light.LIGHT_TYPE_SPOT ) {
            instance = new this.graphics.instance.SpotLight(
                new this.graphics.instance.Color(
                    this.color.r,
                    this.color.g,
                    this.color.b
                ),
                this.intensity
            );
            instance.distance = this.distance;
            instance.angle = this.angle;
            instance.penumbra = this.penumbra;
            instance.decay = this.decay;
        }
    }

    if (!instance) {
        console.warn('Do not support lights of type : ' + this.lightType + ' - is your DB out of date?');
        throw new Error('Do not support lights of type : ' + this.lightType + ' - is your DB out of date?');
    }

    instance.gameLibObject = this;

    instance.name = this.name;

    instance.position.x = this.position.x;
    instance.position.y = this.position.y;
    instance.position.z = this.position.z;

    instance.rotation.x = this.rotation.x;
    instance.rotation.y = this.rotation.y;
    instance.rotation.z = this.rotation.z;

    return instance;
};

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

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