/**
 * 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.Light.API
 * @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();
};

/**
 * Raw Light API object - should always correspond with the Light Schema
 * @param id
 * @param lightType
 * @param name
 * @param color
 * @param intensity
 * @param position
 * @param targetPosition
 * @param quaternion
 * @param rotation
 * @param scale
 * @param distance
 * @param decay
 * @param power
 * @param angle
 * @param penumbra
 * @constructor
 */
GameLib.D3.Light.API = function(
    id,
    lightType,
    name,
    color,
    intensity,
    position,
    targetPosition,
    quaternion,
    rotation,
    scale,
    distance,
    decay,
    power,
    angle,
    penumbra
) {
    if (GameLib.D3.Utils.UndefinedOrNull(id)) {
        id = GameLib.D3.Tools.RandomId();
    }
    this.id = id;

    if (GameLib.D3.Utils.UndefinedOrNull(lightType)) {
        lightType = GameLib.D3.Light.LIGHT_TYPE_AMBIENT;
    }
    this.lightType = lightType;

    if (GameLib.D3.Utils.UndefinedOrNull(name)) {
        name = 'Light (' + lightType + ')';
    }
    this.name = name;

    if (GameLib.D3.Utils.UndefinedOrNull(color)) {
        color = new GameLib.D3.Color(1,1,1,1);
    }
    this.color = color;

    if (GameLib.D3.Utils.UndefinedOrNull(intensity)) {
        intensity = 1;
    }
    this.intensity = intensity;

    if (typeof position == 'undefined') {
        position = new GameLib.D3.Vector3(0,10,0);
    }
    this.position = position;

    if (typeof targetPosition == 'undefined') {
        targetPosition = new GameLib.D3.Vector3(0,0,0);
    }
    this.targetPosition = targetPosition;

    if (typeof quaternion == 'undefined'){
        quaternion = new GameLib.D3.Vector4();
    }
    this.quaternion = quaternion;

    if (typeof rotation == 'undefined'){
        rotation = new GameLib.D3.Vector3(0,0,0);
    }
    this.rotation = rotation;

    if (typeof scale == 'undefined'){
        scale = new GameLib.D3.Vector3(1,1,1);
    }
    this.scale = scale;

    if (typeof distance == 'undefined'){
        distance = 0;
    }
    this.distance = distance;

    if (typeof decay == 'undefined'){
        decay = 1;
    }
    this.decay = decay;

    if (typeof power == 'undefined'){
        power = 4 * Math.PI;
    }
    this.power = power;

    if (typeof angle == 'undefined'){
        angle = Math.PI / 3;
    }
    this.angle = angle;

    if (typeof penumbra == 'undefined'){
        penumbra = 0;
    }
    this.penumbra = penumbra;
};

/**
 * 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);
};