/**
 * Creates a Editor object
 * @param graphics R3.D3.Graphics
 * @param apiEditor R3.D3.API.Editor
 * @param onSelectionChanged
 * @param onSelectObject
 * @param onDeSelectObject
 * @constructor
 */
R3.D3.Editor = function(
    graphics,
    apiEditor,
    onSelectionChanged,
    onSelectObject,
    onDeSelectObject
) {

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

    if (R3.Utils.UndefinedOrNull(apiEditor)) {
        apiEditor = {};
    }

	if (apiEditor instanceof R3.D3.Editor) {
		return apiEditor;
	}

    R3.D3.API.Editor.call(
        this,
        apiEditor.id,
        apiEditor.name,
        apiEditor.baseUrl,
        apiEditor.path,
        apiEditor.imageFactory,
        apiEditor.games,
        apiEditor.scenes,
        apiEditor.cameras,
        apiEditor.composers,
        apiEditor.viewports,
        apiEditor.renderers,
        apiEditor.renderTargets,
        apiEditor.systems,
        apiEditor.entityManager,
        apiEditor.allSelected,
        apiEditor.selectedObjects,
        apiEditor.parentEntity
    );

    if (this.imageFactory instanceof R3.D3.API.ImageFactory) {
        this.imageFactory = new R3.D3.ImageFactory(
            this.graphics,
            this.imageFactory
        );
    }

    if (this.games) {
        this.games = this.games.map(
            function (apiGame) {
                if (apiGame instanceof R3.D3.API.Game) {
                    return new R3.D3.Game(
                        this.graphics,
                        apiGame,
                        this.imageFactory
                    )
                }
                else {
                    console.warn('game not of type API.Game');
                    throw new Error('game not of type API.Game');
                }
            }.bind(this)
        )
    }

    this.scenes = this.scenes.map(
        function (apiScene) {
            if (apiScene instanceof R3.D3.API.Scene) {
                return new R3.D3.Scene(
                    this.graphics,
                    apiScene,
                    this.imageFactory,
                    true
                )
            } else {
                console.warn('apiScene not of type API.Scene');
                throw new Error('apiScene not of type API.Scene');
            }
        }.bind(this)
    );

    this.cameras = this.cameras.map(
        function (apiCamera) {
            if (apiCamera instanceof R3.D3.API.Camera) {
                return new R3.D3.Camera(
                    this.graphics,
                    apiCamera
                )
            } else {
                console.warn('apiCamera not of type API.Camera');
                throw new Error('apiCamera not of type API.Camera');
            }
        }.bind(this)
    );

    this.composers = this.composers.map(
        function (apiComposer) {
            if (apiComposer instanceof R3.D3.API.Composer) {
                return new R3.D3.Composer(
                    this.graphics,
                    apiComposer
                )
            } else {
                console.warn('apiComposer not of type API.Composer');
                throw new Error('apiComposer not of type API.Composer');
            }
        }.bind(this)
    );

    this.viewports = this.viewports.map(
        function (apiViewport) {
            if (apiViewport instanceof R3.D3.API.Viewport) {
                return new R3.D3.Viewport(
                    this.graphics,
                    apiViewport
                )
            } else {
                console.warn('apiViewport not of type API.Viewport');
                throw new Error('apiViewport not of type API.Viewport');
            }
        }.bind(this)
    );

    this.renderers = this.renderers.map(
        function (apiRenderer) {
            if (apiRenderer instanceof R3.D3.API.Renderer) {
                return new R3.D3.Renderer(
                    this.graphics,
                    apiRenderer
                )
            } else {
                console.warn('apiRenderer not of type API.Renderer');
                throw new Error('apiRenderer not of type API.Renderer');
            }
        }.bind(this)
    );

    this.renderTargets = this.renderTargets.map(
        function (apiRenderTarget) {
            if (apiRenderTarget instanceof R3.D3.API.RenderTarget) {
                return new R3.D3.RenderTarget(
                    this.graphics,
                    apiRenderTarget
                )
            } else {
                console.warn('apiRenderTarget not of type API.RenderTarget');
                throw new Error('apiRenderTarget not of type API.RenderTarget');
            }
        }.bind(this)
    );

    this.systems = this.systems.map(
        function (apiSystem) {
            if (apiSystem instanceof R3.API.System) {
                return new R3.System(
                    this.graphics,
                    apiSystem
                )
            } else {
                console.warn('apiSystem not of type API.System');
                throw new Error('apiSystem not of type API.System');
            }
        }.bind(this)
    );

    if (this.entityManager) {
        if (this.entityManager instanceof R3.API.EntityManager) {
            this.entityManager = new R3.EntityManager(
                this.graphics,
                this.entityManager
            );
        } else {
            console.warn('entityManager not of type API.EntityManager');
            throw new Error('entityManager not of type API.EntityManager');
        }
    }
    
    if (R3.Utils.UndefinedOrNull(onSelectionChanged)) {
        onSelectionChanged = null;
    }
    this.onSelectionChanged = onSelectionChanged;

    if (R3.Utils.UndefinedOrNull(onSelectObject)) {
        onSelectObject = null;
    }
    this.onSelectObject = onSelectObject;

    if (R3.Utils.UndefinedOrNull(onDeSelectObject)) {
        onDeSelectObject = null;
    }
    this.onDeSelectObject = onDeSelectObject;

    this.meshMoveMode           = false;
    this.meshMoveXMode          = false;
    this.meshMoveYMode          = false;
    this.meshMoveZMode          = false;

    this.buildIdToObject();

    this.linkObjects(this.idToObject);

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

R3.D3.Editor.prototype = Object.create(R3.D3.API.Editor.prototype);
R3.D3.Editor.prototype.constructor = R3.D3.Editor;

/**
 * Creates a camera instance of 'graphics' type (only THREE for now)
 * @returns {THREE.Editor}
 */
R3.D3.Editor.prototype.createInstance = function(update) {

    var instance = null;

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

    return instance;
};

/**
 * Updates the instance with the current state
 */
R3.D3.Editor.prototype.updateInstance = function() {
   this.instance = this.createInstance(true);
};

/**
 * Converts a R3.D3.Editor to a new R3.D3.API.Editor
 * @returns {R3.D3.API.Editor}
 */
R3.D3.Editor.prototype.toApiObject = function() {

    var apiImageFactory = null;
    var apiGames = [];
    var apiScenes = [];
    var apiCameras = [];
    var apiComposers = [];
    var apiViewports = [];
    var apiRenderers = [];
    var apiRenderTargets = [];
    var apiSystems = [];
    var apiEntityManager = null;

    if (this.imageFactory instanceof R3.D3.ImageFactory) {
        apiImageFactory = this.imageFactory.toApiObject();
    }

	if (this.games) {
        apiGames = this.games.map(
            function(game) {
                if (game instanceof R3.D3.Game) {
                    return game.toApiObject();
                } else {
                    console.warn('game not an instance of Game');
                    throw new Error('game not an instance of Game');
                }
            }
        );
	}

    if (this.scenes) {
        apiScenes = this.scenes.map(
            function(scene) {
                if (scene instanceof R3.D3.Scene) {
                    return scene.toApiObject();
                } else {
                    console.warn('scene not an instance of Scene');
                    throw new Error('scene not an instance of Scene');
                }
            }
        );
    }

    if (this.cameras) {
        apiCameras = this.cameras.map(
            function(camera) {
                if (camera instanceof R3.D3.Camera) {
                    return camera.toApiObject();
                } else {
                    console.warn('camera not an instance of Camera');
                    throw new Error('camera not an instance of Camera');
                }
            }
        );
    }

    if (this.composers) {
        apiComposers = this.composers.map(
            function(composer) {
                if (composer instanceof R3.D3.Composer) {
                    return composer.toApiObject();
                } else {
                    console.warn('composer not an instance of Composer');
                    throw new Error('composer not an instance of Composer');
                }
            }
        );
    }

    if (this.viewports) {
        apiViewports = this.viewports.map(
            function(viewport) {
                if (viewport instanceof R3.D3.Viewport) {
                    return viewport.toApiObject();
                } else {
                    console.warn('viewport not an instance of Viewport');
                    throw new Error('viewport not an instance of Viewport');
                }
            }
        );
    }

    if (this.renderers) {
        apiRenderers = this.renderers.map(
            function(renderer) {
                if (renderer instanceof R3.D3.Renderer) {
                    return renderer.toApiObject();
                } else {
                    console.warn('renderer not an instance of Renderer');
                    throw new Error('renderer not an instance of Renderer');
                }
            }
        );
    }

    if (this.renderTargets) {
        apiRenderTargets = this.renderTargets.map(
            function(renderTarget) {
                if (renderTarget instanceof R3.D3.RenderTarget) {
                    return renderTarget.toApiObject();
                } else {
                    console.warn('renderTarget not an instance of RenderTarget');
                    throw new Error('renderTarget not an instance of RenderTarget');
                }
            }
        );
    }

    if (this.systems) {
        apiSystems = this.systems.map(
            function(system) {
                if (system instanceof R3.System) {
                    return system.toApiObject();
                } else {
                    console.warn('system not an instance of System');
                    throw new Error('system not an instance of System');
                }
            }
        );
    }

    if (this.entityManager) {
        if (this.entityManager instanceof R3.EntityManager) {
            apiEntityManager = this.entityManager.toApiObject();
        } else {
            console.warn('entityManager not an instance of EntityManager');
            throw new Error('entityManager not an instance of EntityManager');
        }
    }
    
    return new R3.D3.API.Editor(
        this.id,
        this.name,
        this.baseUrl,
        this.path,
        apiImageFactory,
        apiGames,
        apiScenes,
        apiCameras,
        apiComposers,
        apiViewports,
        apiRenderers,
        apiRenderTargets,
        apiSystems,
        apiEntityManager,
        this.allSelected,
		this.selectedObjects,
        R3.Utils.IdOrNull(this.parentEntity)
    );

};

/**
 * Converts from an Object Editor to a R3.D3.Editor
 * @param graphics R3.D3.Graphics
 * @param objectEditor Object
 * @returns {R3.D3.Editor}
 * @constructor
 */
R3.D3.Editor.FromObjectEditor = function(graphics, objectEditor) {

    var apiEditor = R3.D3.API.Editor.FromObjectEditor(objectEditor);

    return new R3.D3.Editor(
        graphics,
        apiEditor
    );

};

/**
 * Selects a R3 Object
 * @param object R3.*
 */
R3.D3.Editor.prototype.selectObject = function(object) {

    this.selectedObjects.push(
        new R3.D3.SelectedObject(
            this.graphics,
            object
        )
    );

    if (this.onSelectObject) {
        this.onSelectObject();
    }

};

/**
 * Selects a R3 Object
 * @param object R3.*
 */
R3.D3.Editor.prototype.deSelectObject = function(object) {

    var results = this.selectedObjects.reduce(
        function(results, selectedObject) {

            if (selectedObject.object.id == object.id) {
                results.removed = selectedObject;
            } else {
                results.rest.push(selectedObject);
            }

            return results;
        },
        {
            removed : null,
            rest    : []
        }
    );


    if (this.onDeSelectObject) {
        this.onDeSelectObject(results);
    }

};

R3.D3.Editor.prototype.setSize = function(width, height) {

    this.viewports.map(
        function(viewport){
            viewport.width = width;
            viewport.height = height;
            viewport.updateInstance();
        }
    );

    this.renderers.map(
        function(renderer) {
            renderer.setSize(width, height);
        }
    );
};

/**
 * Adds a scene to the Editor
 * @param scene R3.D3.API.Scene
 */
R3.D3.Editor.prototype.addScene = function(scene) {

    if (!scene instanceof R3.D3.Scene &&
        !scene instanceof R3.D3.API.Scene) {
		throw new Error('Unhandled scene type : ' + scene);
    }

	scene = new R3.D3.Scene(this.graphics, scene);

	this.scenes.push(scene);

	this.buildIdToObject();

	/**
	 * We need to add the meshes as components of this scene to the entity 'editor' of the 'entityManager' in this.
	 *
	 * We need a notify mechanism to notify the system of new mesh components
	 */
	scene.meshes.map(
		function(mesh){

			/**
             * Get all entities with 3D renderers and some systems
			 */
			var entities = this.entityManager.query(
			    [
			        R3.D3.Renderer,
                    R3.System
                ]
            );

			entities.map(
				function(entity){
					/**
                     * Add all meshes to this entity
					 */
					entity.addComponent(mesh);

					/**
                     * Now we need to notify all systems of this new components
					 */
					var systems = entity.getComponents(R3.System);

					systems.map(
					    function(system){
					        system.notify('meshes', R3.D3.Mesh)
                        }.bind(this)
                    )

				}.bind(this)
			);

		}.bind(this)
	);

};