/**
 * 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.color = new GameLib.D3.Color(
        graphics,
        this,
        this.color,
        0.01
    );

    this.position = new GameLib.Vector3(
        graphics,
        this,
        this.position
    );

    this.targetPosition = new GameLib.Vector3(
        graphics,
        this,
        this.targetPosition
    );

    this.scale = new GameLib.Vector3(
        graphics,
        this,
        this.scale
    );

    this.quaternion = new GameLib.Quaternion(
        graphics,
        this,
        this.quaternion
    );

    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) {

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

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

        if (this.lightType == GameLib.D3.Light.LIGHT_TYPE_POINT) {
            instance = new this.graphics.instance.PointLight(
                this.color.instance,
                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(
                this.color.instance,
                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.scale.x = this.scale.x;
    instance.scale.y = this.scale.y;
    instance.scale.z = this.scale.z;

     if (instance.target) {
         instance.target.position.x = this.targetPosition.x;
         instance.target.position.y = this.targetPosition.y;
         instance.target.position.z = this.targetPosition.z;
     }

    instance.quaternion.x = this.quaternion.x;
    instance.quaternion.y = this.quaternion.y;
    instance.quaternion.z = this.quaternion.z;
    instance.quaternion.w = this.quaternion.w;

    instance.intensity = this.intensity;

    instance.color.set(this.color.toHex());

    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);
};

/**
 * Converts a GameLib.D3.Light to a GameLib.D3.API.Light
 * @returns {GameLib.D3.API.Light}
 */
GameLib.D3.Light.prototype.toApiLight = function() {
    return new GameLib.D3.API.Light(
        this.id,
        this.lightType,
        this.name,
        this.color.toApiColor(),
        this.intensity,
        this.position.toApiVector(),
        this.targetPosition.toApiVector(),
        this.quaternion.toApiQuaternion(),
        this.rotation,
        this.scale.toApiVector(),
        this.distance,
        this.decay,
        this.power,
        this.angle,
        this.penumbra
    );
};

/**
 * Returns a new GameLib.D3.Light from a GameLib.D3.API.Light
 * @param graphics GameLib.D3.Graphics
 * @param apiLight GameLib.D3.API.Light
 * @returns {GameLib.D3.API.Light}
 */
GameLib.D3.Light.FromObjectLight = function(graphics, apiLight) {

    return new GameLib.D3.Light(
        graphics,
        new GameLib.D3.API.Light(
            apiLight.id,
            apiLight.lightType,
            apiLight.name,
            new GameLib.D3.API.Color(
                apiLight.color.r,
                apiLight.color.g,
                apiLight.color.b,
                apiLight.color.a
            ),
            apiLight.intensity,
            new GameLib.API.Vector3(
                apiLight.position.x,
                apiLight.position.y,
                apiLight.position.z
            ),
            new GameLib.API.Vector3(
                apiLight.targetPosition.x,
                apiLight.targetPosition.y,
                apiLight.targetPosition.z
            ),
            new GameLib.API.Quaternion(
                apiLight.quaternion.x,
                apiLight.quaternion.y,
                apiLight.quaternion.z,
                apiLight.quaternion.w,
                new GameLib.API.Vector3(
                    apiLight.quaternion.axis.x,
                    apiLight.quaternion.axis.y,
                    apiLight.quaternion.axis.z
                ),
                apiLight.quaternion.angle
            ),
            new GameLib.API.Vector3(
                apiLight.rotation.x,
                apiLight.rotation.y,
                apiLight.rotation.z
            ),
            new GameLib.API.Vector3(
                apiLight.scale.x,
                apiLight.scale.y,
                apiLight.scale.z
            ),
            apiLight.distance,
            apiLight.decay,
            apiLight.power,
            apiLight.angle,
            apiLight.penumbra
        )
    );

};