/**
 * 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
) {
    this.graphics = graphics;
    this.graphics.isNotThreeThrow();

    GameLib.D3.API.Light.call(
        this,
        apiLight.id,
        apiLight.lightType,
		apiLight.name,
		apiLight.color,
		apiLight.intensity,
		apiLight.position,
		apiLight.targetPosition,
		apiLight.quaternion,
		apiLight.rotation,
		apiLight.scale,
		apiLight.distance,
		apiLight.decay,
		apiLight.power,
		apiLight.angle,
        apiLight.penumbra,
        apiLight.parentEntity
    );

    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();
};

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

/**
 * 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,
        GameLib.Utils.IdOrNull(this.parentEntity)
    );
};

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

    return new GameLib.D3.Light(
        graphics,
        GameLib.D3.API.Light.FromObjectLight(objectLight)
    );

};