/**
 * Scene Superset - The apiScene properties get moved into the Scene object itself, and then the instance is
 * created
 * @param graphics
 * @param apiScene GameLib.D3.API.Scene
 * @constructor
 */
GameLib.D3.Scene = function (
    graphics,
    apiScene
) {
    this.graphics = graphics;
    this.graphics.isNotThreeThrow();

    if (GameLib.Utils.UndefinedOrNull(apiScene)) {
        apiScene = {};
    }

	if (apiScene instanceof GameLib.D3.Scene) {
		return apiScene;
	}

    GameLib.D3.API.Scene.call(
        this,
		apiScene.id,
		apiScene.name,
        apiScene.meshes,
        apiScene.position,
		apiScene.quaternion,
		apiScene.scale,
        apiScene.parentGameId,
        apiScene.lights,
        apiScene.textures,
		apiScene.materials,
		apiScene.activeCamera,
		apiScene.parentEntity
    );

    this.meshes = this.meshes.map(
        function(apiMesh) {

            if (apiMesh instanceof GameLib.D3.API.Mesh) {

                return new GameLib.D3.Mesh(
                    this.graphics,
                    apiMesh
                );

            } else {
                console.warn('apiMesh not an instance of API.Mesh');
                throw new Error('apiMesh not an instance of API.Mesh');
            }

        }.bind(this)
    );

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

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

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

    this.lights = this.lights.map(
        function(apiLight) {

            if (apiLight instanceof GameLib.D3.API.Light) {

                return new GameLib.D3.Light(
                    this.graphics,
                    apiLight
                );

            } else {
                console.warn('apiLight not an instance of API.Light');
                throw new Error('apiLight not an instance of API.Light');
            }

        }.bind(this)
    );

    // this.textures = this.textures.map(
    //     function(apiTexture) {
    //
    //         if (apiTexture instanceof GameLib.D3.API.Texture) {
    //             var texture = new GameLib.D3.Texture(
    //                 this.graphics,
    //                 apiTexture,
    //                 this.imageFactory
    //             );
    //
    //             this.idToObject[texture.id] = texture;
    //
    //             return texture;
    //         } else {
    //             console.warn('apiTexture not an instance of API.Texture');
    //             throw new Error('apiTexture not an instance of API.Texture');
    //         }
    //
    //     }.bind(this)
    // );
    //
    // this.materials = this.materials.map(
    //     function(apiMaterial) {
    //
    //         if (apiMaterial instanceof GameLib.D3.API.Material) {
    //
    //             var material = new GameLib.D3.Material(
    //                 this.graphics,
    //                 apiMaterial,
    //                 this.imageFactory
    //             );
    //
    //             this.idToObject[material.id] = material;
    //
    //             return material;
    //
    //         } else {
    //             console.warn('apiMaterial not an instance of API.Material');
    //             throw new Error('apiMaterial not an instance of API.Material');
    //         }
    //
    //     }.bind(this)
    // );

    if (this.activeCamera instanceof GameLib.D3.API.Camera) {
        this.activeCamera = new GameLib.D3.Camera(
            this.graphics,
            this.activeCamera
        );
    }

    this.idToObject[this.id] = this;

    this.linkObjects(this.idToObject);

    this.buildIdToObject();

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

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

/**
 * Creates an instance scene
 * @returns {THREE.Scene}
 */
GameLib.D3.Scene.prototype.createInstance = function() {

    var instance = new THREE.Scene();

    instance.name = this.name;

    instance.position = this.position.instance;

    instance.scale = this.scale.instance;

    instance.quaternion = this.quaternion.instance;

    for (var im = 0; im < this.meshes.length; im++) {
        instance.add(this.meshes[im].instance);
    }

    for (var l = 0; l < this.lights.length; l++) {
        instance.add(this.lights[l].instance);
    }

    return instance;
};

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

    var apiMeshes = this.meshes.map(
        function(mesh) {
            return mesh.toApiObject();
        }
    );

    var apiLights = this.lights.map(
        function(light) {
            return light.toApiObject();
        }
    );

    var apiTextures = this.textures.map(
        function(texture) {
            return texture.toApiObject();
        }
    );

    var apiMaterials = this.materials.map(
        function(material) {
            return material.toApiObject();
        }
    );

    return new GameLib.D3.API.Scene(
        this.id,
        this.name,
        apiMeshes,
        this.position.toApiObject(),
        this.quaternion.toApiObject(),
        this.scale.toApiObject(),
        this.parentGameId,
        apiLights,
        apiTextures,
        apiMaterials,
        GameLib.Utils.IdOrNull(this.activeCamera),
        GameLib.Utils.IdOrNull(this.parentEntity)
    );
};

/**
 * Converts a scene Object to a GameLib.D3.Scene object
 * @param graphics GameLib.D3.Graphics
 * @param objectScene Object
 * @returns {GameLib.D3.Scene}
 * @constructor
 */
GameLib.D3.Scene.FromObjectScene = function(
    graphics,
    objectScene
) {
    var apiScene = GameLib.D3.API.Scene.FromObjectScene(objectScene);

    return new GameLib.D3.Scene(
        graphics,
        apiScene
    );
};


/**
 * Adds a mesh to the scene
 * @param mesh GameLib.D3.Mesh
 */
GameLib.D3.Scene.prototype.addMesh = function(mesh) {

    if (mesh instanceof GameLib.D3.Mesh) {
        this.meshes.push(mesh);
    } else if (mesh instanceof GameLib.D3.API.Mesh) {
        mesh = new GameLib.D3.Mesh(
            this.graphics,
            mesh
        )
    }

    mesh.parentScene = this;

    this.instance.add(mesh.instance);

    this.buildIdToObject();
};

/**
 *
 * @param mesh
 */
GameLib.D3.Scene.prototype.removeMesh = function(mesh) {

    var index = -1;

    if (mesh instanceof GameLib.D3.Mesh) {
        index = this.meshes.indexOf(mesh);
    } else {
        console.warn('Cannot remove this mesh - what is this ?' + mesh.toString());
        throw new Error('Cannot remove this mesh - what is this ?' + mesh.toString())
    }

    this.instance.remove(mesh.instance);

    if (index !== -1) {
        this.meshes.splice(index, 1);
    }

    if (mesh.parentScene === this) {
        mesh.parentScene = null;
    }

    this.buildIdToObject();
};