'use strict';

/**
 * Licensed Materials - Property of IBM
 * IBM Cognos Products: Storytelling
 * (C) Copyright IBM Corp. 2014, 2019
 * US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
 */

define(['baglass/core-client/js/core-client/ui/core/Events', 'underscore', 'baglass/core-client/js/core-client/utils/ClassFactory'], function (Events, _, ClassFactory) {

	var Controller = Events.extend({

		authoring: false,
		currentSceneIndex: 0,
		timelineController: null,
		sceneCount: 0,
		fullscreen: false,

		// Map 'layout type' to 'listing' values
		layoutToListing: {
			slideshow: 'slideShow',
			panAndZoom1: 'panAndZoom1',
			panAndZoom2: 'panAndZoom2',
			panAndZoom3: 'panAndZoom3',
			panAndZoom4: 'panAndZoom4',
			panAndZoom5: 'panAndZoom5',
			panAndZoom6: 'panAndZoom6'
		},

		init: function init(options) {
			Controller.inherited('init', this, arguments);

			this.eventRouter = options.eventRouter;
			this.model = options.model; // dashboard-core.BoardModel
			this.timelineController = options.timelineController;
			this.authoring = options.authoring;
			this.dashboardApi = options.dashboardApi;

			// Listen for events.
			this.eventRouter.on('layoutType:changed', this._onLayoutTypeChanged, this);
			this.eventRouter.on('mode:change', this.onModeChanged, this);
			this.eventRouter.on('navigation:started', this.onNavigationStarted, this);
			this.eventRouter.on('navigation:complete', this.onNavigationComplete, this);
			this.eventRouter.on('playback:prev', this.previousScene, this);
			this.eventRouter.on('playback:next', this.nextScene, this);
			this.eventRouter.on('playback:togglePlayPause', this.togglePlayPause, this);
			this.eventRouter.on('timeline:end', this.playThrough, this);

			this.model.layout.on('change:showOverviews', this.onShowOverviewsChanged, this);
			this.model.layout.on('change:pageSize', this.onPageSizeChange, this);

			this.timelineController.on('time:update', this.onTimeUpdated, this);
			this.timelineController.on('playState:change', this.onTimeStateChanged, this);
			this.timelineController.on('navigateMarkers:change', this.onNavigateMarkersChange, this);
			this.timelineController.on('kioskMode:change', this.onKioskModeChange, this);

			// Start listening for layouts being added.
			this.model.on('addLayouts', this.onAddLayouts, this);
			this.model.on('removeLayouts', this.onRemoveLayout, this);

			// Keep track of the scene count.
			this.sceneCount = this.getSceneCount();

			this.playThroughTimer = null;
			this.overviewPauseLength = 5000; // ms
			this.startOverviewIndex = -1;
			this.endOverviewIndex = -2;
			// we want to display scene 0 in authoring mode even if we have overviews
			this.currentSceneIndex = this.showStartOverview() && !this.isAuthoring() ? this.startOverviewIndex : 0;

			// the start/end overview id relate to the 'id' property from the consumeView PanAndZoomLayout._overviews array
			this.startOverviewId = 'start';
			this.endOverviewId = 'end';
			this.currentSceneId = this.showStartOverview() && !this.isAuthoring() ? this.startOverviewId : this.model.layout.items[0].id;

			// track sharing
			this.shareState = null;
		},

		onStoryLayoutReady: function onStoryLayoutReady(sceneId, sceneTime) {
			// set the current index to match the id from the shareable URL
			if (sceneId) {
				// the indices -1 and -2 are used as scene IDs for start overview and end overview
				var idx = parseInt(sceneId, 10);
				this.currentSceneIndex = idx < 0 ? idx : this.getSceneIndex(sceneId);
			}

			// Update the time queue with the current scene.
			this._updateSelectedScene();
			// Make the state of the story match
			this.timelineController.maxPreviousScenes(this.currentSceneIndex);
			this.timelineController.zeroFutureScenes(this.currentSceneIndex);

			// set the current time to match the time from the shareable URL
			if (sceneTime >= 0) {
				this.setCurrentTime(sceneTime);
			}
		},

		destroy: function destroy() {
			this.eventRouter.off('layoutType:changed', this._onLayoutTypeChanged, this);
			this.eventRouter.off('mode:change', this.onModeChanged, this);
			this.eventRouter.off('navigation:started', this.onNavigationStarted, this);
			this.eventRouter.off('navigation:complete', this.onNavigationComplete, this);
			this.eventRouter.off('playback:prev', this.previousScene, this);
			this.eventRouter.off('playback:next', this.nextScene, this);
			this.eventRouter.off('playback:togglePlayPause', this.togglePlayPause, this);
			this.eventRouter.off('timeline:end', this.playThrough, this);

			this.model.layout.off('change:showOverviews', this.onShowOverviewsChanged, this);
			this.model.layout.off('change:pageSize', this.onPageSizeChange, this);

			this.timelineController.off('time:update', this.onTimeUpdated, this);
			this.timelineController.off('playState:change', this.onTimeStateChanged, this);
			this.timelineController.off('navigateMarkers:change', this.onNavigateMarkersChange, this);
			this.timelineController.off('kioskMode:change', this.onKioskModeChange, this);

			// Stop listening for layouts being added.
			this.model.off('addLayouts', this.onAddLayouts, this);
			this.model.off('removeLayouts', this.onRemoveLayout, this);
		},

		/**
   * Callback when share panel shows.
   * @param slideout {Object} The share panel slideout
   */
		enterShareState: function enterShareState(slideout) {
			if (!this.shareState) {
				var playing = this.isPlaying();
				if (playing) {
					this.pause();
				}
				this.shareState = { wasPlaying: playing, slideout: slideout };
			}
		},

		/**
   * Callback when share panel hides.
   */
		leaveShareState: function leaveShareState() {
			if (this.shareState) {
				if (this.shareState.wasPlaying && !this.isPlaying()) {
					this.play();
				}
				this.shareState = null;
			}
		},

		enterPrintMode: function enterPrintMode() {
			return this.timelineController.maxPreviousScenes(-2);
		},

		leavePrintMode: function leavePrintMode(sceneTime) {
			var _this = this;

			return this.timelineController.zeroFutureScenes(-1).then(function () {
				if (sceneTime >= 0) {
					_this.setCurrentTime(sceneTime);
				}
			});
		},

		getTimelineController: function getTimelineController() {
			return this.timelineController;
		},

		pause: function pause() {
			this.cancelPlaythroughTimer();
			this.timelineController.pause();
		},

		cancelPlaythroughTimer: function cancelPlaythroughTimer() {
			if (this.playThroughTimer) {
				clearTimeout(this.playThroughTimer);
				this.playThroughTimer = null;
			}
		},


		selectNextSceneAfterPause: function selectNextSceneAfterPause(options) {
			if (!this.playThroughTimer) {
				this.playThroughTimer = setTimeout(function () {
					if (!this.isAuthoring()) {
						this.nextScene(options);
					}
				}.bind(this), this.overviewPauseLength);
			}
		},

		playThrough: function playThrough(event) {
			if (this.isPlayThrough() && !this.isAuthoring() && !this.isPlaying() && event) {
				if (event.play !== false) {
					if (this.isOverview()) {
						this.selectNextSceneAfterPause({ play: true });
					} else {
						this.nextScene({ play: event.endState === 'playing' });
					}
				}
			}
		},

		play: function play() {
			this.cancelPlaythroughTimer();
			if (this.isStartOverview()) {
				this.selectScene({
					index: 0,
					play: true
				});
			} else {
				this.timelineController.play();
			}
		},

		stop: function stop() {
			this.cancelPlaythroughTimer();
			this.timelineController.stop();
		},

		isScenePopulated: function isScenePopulated(sceneId) {
			return this.model.layout.listWidgets([sceneId]).length > 0;
		},

		isPlaying: function isPlaying() {
			return this.timelineController.isPlaying();
		},

		togglePlayThrough: function togglePlayThrough() {
			this.cancelPlaythroughTimer();
			this.timelineController.togglePlayThrough();
		},

		toggleKioskMode: function toggleKioskMode() {
			this.timelineController.toggleKioskMode();
			// update Next/Prev scene labels
			this.trigger('kioskMode:change', { isKioskMode: this.isKioskMode() });
		},

		toggleNavigateMarkers: function toggleNavigateMarkers() {
			this.timelineController.toggleNavigateMarkers();
		},

		toggleRefreshData: function toggleRefreshData() {
			this.timelineController.toggleRefreshData();
		},

		togglePlayPause: function togglePlayPause() {
			if (this.isPlaying()) {
				this.pause();
			} else {
				this.play();
			}
		},

		getCurrentTime: function getCurrentTime() {
			return this.timelineController.getCurrentTime();
		},
		setCurrentTime: function setCurrentTime(time) {
			return this.timelineController.setCurrentTime(time);
		},

		getDuration: function getDuration() {
			return this.timelineController.getDuration();
		},

		widgetAtStartOfCurrentScene: function widgetAtStartOfCurrentScene(widgetId) {
			var episode = this.timelineController.getTimelineEpisodeById(widgetId);
			if (episode) {
				return episode.touchesStart();
			}
			return false;
		},

		nextScene: function nextScene(options) {
			if (this.isNavigateMarkers() && !this.timelineController.isAtEndOfScene()) {
				return this._nextMarker();
			} else {
				return this._nextScene(options);
			}
		},

		_nextScene: function _nextScene(options) {
			this.dashboardApi.deselectAllWidgets();
			// Trigger dashboard.
			if (this.isKioskMode() && this.isOnLastScene()) {
				var refreshData = this.isRefreshData() && !this.isAuthoring();
				if (this.getSceneCount() > 1) {
					return this._invokeLifeCycleHandlers('scene:next', _.extend({}, options, { to: this.getFirstSceneIndex(), refreshData: refreshData }));
				} else {
					return this.selectScene({
						index: this.getFirstSceneIndex(),
						forceSelect: true,
						refreshData: refreshData
					});
				}
			} else if (!this.isOnLastScene()) {
				return this._invokeLifeCycleHandlers('scene:next', options);
			}
		},

		_nextMarker: function _nextMarker() {
			return this.timelineController.jumpToNextMarker();
		},

		previousScene: function previousScene() {
			if (this.isNavigateMarkers() && !this.timelineController.isAtStartOfScene()) {
				return this._previousMarker();
			} else {
				return this._previousScene();
			}
		},

		_previousScene: function _previousScene() {
			this.dashboardApi.deselectAllWidgets();
			// Trigger dashboard.
			if (this.isKioskMode() && this.isOnFirstScene()) {
				if (this.getSceneCount() > 1) {
					return this._invokeLifeCycleHandlers('scene:previous', { to: this.getLastSceneIndex() });
				} else {
					return this.selectScene({
						index: this.getLastSceneIndex(),
						forceSelect: true
					});
				}
			} else if (!this.isOnFirstScene()) {
				var refreshData = this.isOnSecondScene() && this.isRefreshData() && !this.isAuthoring();
				return this._invokeLifeCycleHandlers('scene:previous', { refreshData: refreshData });
			}
		},

		_previousMarker: function _previousMarker() {
			return this.timelineController.jumpToPreviousMarker();
		},

		_invokeLifeCycleHandlers: function _invokeLifeCycleHandlers(name, payload) {
			return this.dashboardApi.getDashboardCoreSvc('.LifeCycleManager').invokeLifeCycleHandlers(name, payload);
		},

		getStoryDurationLabel: function getStoryDurationLabel() {
			// TODO: calculate total story duration and return either story duration or scene duration depending on selection.
			return this.timelineController.getTimeLabel(this.timelineController.getDuration(), true);
		},

		getStoryCurrentTimeLabel: function getStoryCurrentTimeLabel() {
			// TODO: calculate total story duration and return either story current time or scene current time depending on selection.
			return this.timelineController.getTimeLabel(this.timelineController.getCurrentTime(), true);
		},

		getSelectedSceneIndex: function getSelectedSceneIndex() {
			return this.currentSceneIndex;
		},

		getFirstSceneIndex: function getFirstSceneIndex() {
			return this.showAuthoringOverview() ? this.startOverviewIndex : 0;
		},

		getLastSceneIndex: function getLastSceneIndex() {
			return this.showEndOverview() ? this.endOverviewIndex : this.model.layout.items.length - 1;
		},

		getSceneCount: function getSceneCount() {
			return this.model.layout.items.length;
		},

		getScenes: function getScenes() {
			return this.model.layout.items;
		},

		getScene: function getScene(index) {
			return this.model.layout.items[index];
		},

		getSceneById: function getSceneById(id) {
			return this.model.layout.findModel(id);
		},

		getSceneId: function getSceneId(index) {
			return this.model.layout.items[index].id;
		},

		getSceneIndex: function getSceneIndex(id) {
			var items = this.model.layout.items || [];
			for (var i = 0; i < items.length; i++) {
				if (items[i].id === id) {
					return i;
				}
			}

			return -1;
		},

		// FIXME: SceneLayout.js (and the two authoring classes SlideShow.js and PanAndZoomLayout.js)
		// is the only place we should be doing the conversion of our scene model IDs to index values.
		// The start and end overview's IDs are now "start" and "end" (for the most part)
		// but because StoryPaneController also does sceneId to model item index value it still works.
		getCurrentSceneInfo: function getCurrentSceneInfo() {
			var info = {};
			// the indices -1 and -2 are used as scene IDs for start overview and end overview
			if (this.currentSceneIndex < 0) {
				info.id = this.currentSceneIndex.toString();
			} else {
				var scene = this.getScene(this.currentSceneIndex);
				info.id = scene.id;
				info.title = scene.title;
			}
			return info;
		},

		addScene: function addScene() {
			var _this2 = this;

			var sceneType = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'SceneLayout1';
			var title = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;

			this.stop();
			this.dashboardApi.deselectAllWidgets();

			return ClassFactory.loadModule('storytelling/layouts/' + sceneType).then(function (sceneLayout) {
				var sceneSpec = sceneLayout.get();
				sceneSpec.layout.title = title;

				var options = {
					addLayoutArray: [{
						model: sceneSpec.layout,
						parentId: _this2.model.layout.id,
						modelIdsValid: true
					}],
					widgetSpecMap: sceneSpec.widgets
				};

				return _this2.model.addLayouts(options);
			});
		},

		/**
   * Updates the 'currentSceneIndex' and triggers a global "scene:select" event
   * @param {Object} options
   * @param {Number} options.index a value that represents what scene will become selected
   * @param {String} options.modelId the model Id of the scene to be selected
   */
		selectScene: function selectScene(options) {
			this.dashboardApi.deselectAllWidgets();
			if (this.currentSceneIndex !== options.index || options.forceSelect) {
				var refreshData = options.refreshData || options.index === this.getFirstSceneIndex() && this.isRefreshData() && !this.isAuthoring();
				this.currentSceneIndex = options.index;
				// Send event to dashboard (and this controller).
				return this._invokeLifeCycleHandlers('scene:select', _.extend({}, options, { refreshData: refreshData }));
			}
			return Promise.resolve();
		},

		getNavModel: function getNavModel() {
			return this.layoutToListing[this.model.layout.type] || '';
		},

		changeNavModel: function changeNavModel(navModel) {
			this.eventRouter.trigger('navigation:change', { type: navModel });
		},

		deleteScene: function deleteScene(id) {
			this.model.removeLayouts(id);
		},

		duplicateScene: function duplicateScene(id) {
			this.model.duplicateLayout(id);
		},

		renameScene: function renameScene(id, title) {
			var pageModel = this.model.layout.findModel(id);
			var options = this.model.getLanguageModelOptions();
			options.silent = false;
			if (pageModel) {
				pageModel.set({ title: title }, options);
			}
		},

		moveViewBefore: function moveViewBefore(pageModel, beforeId) {
			if (pageModel.id !== beforeId && pageModel.getNextSiblingId() !== beforeId) {
				pageModel.updateModel({
					updateArray: [{
						id: pageModel.id,
						parentId: pageModel.getParent().id,
						insertBefore: beforeId
					}]
				});
			}
		},

		moveSceneLeft: function moveSceneLeft(id) {
			var sceneModel = this.model.layout.findModel(id);
			var prevId = sceneModel.getPreviousSiblingId();
			if (prevId) {
				this.moveViewBefore(sceneModel, prevId);
			}
		},

		moveSceneRight: function moveSceneRight(id) {
			var sceneModel = this.model.layout.findModel(id);
			var nextModel = this.model.layout.findModel(sceneModel.getNextSiblingId());
			if (nextModel) {
				this.moveViewBefore(sceneModel, nextModel.getNextSiblingId());
			}
		},

		isPlayThrough: function isPlayThrough() {
			return this.timelineController.isPlayThrough();
		},

		isKioskMode: function isKioskMode() {
			return this.timelineController.isKioskMode();
		},

		isNavigateMarkers: function isNavigateMarkers() {
			return this.timelineController.isNavigateMarkers();
		},

		isRefreshData: function isRefreshData() {
			return this.timelineController.isRefreshData();
		},

		isOnFirstScene: function isOnFirstScene() {
			return this.currentSceneIndex === this.getFirstSceneIndex();
		},

		isOnSecondScene: function isOnSecondScene() {
			return this.currentSceneIndex === this.getFirstSceneIndex() + 1;
		},

		isOnLastScene: function isOnLastScene() {
			return this.currentSceneIndex === this.getLastSceneIndex();
		},

		isOverview: function isOverview() {
			return this.currentSceneIndex < 0;
		},

		isStartOverview: function isStartOverview() {
			return this.currentSceneIndex === this.startOverviewIndex;
		},

		isEndOverview: function isEndOverview() {
			return this.currentSceneIndex === this.endOverviewIndex;
		},

		isAuthoring: function isAuthoring() {
			return this.authoring;
		},

		isAtEndOfScene: function isAtEndOfScene() {
			return this.timelineController.isAtEndOfScene();
		},

		isAtStartOfScene: function isAtStartOfScene() {
			return this.timelineController.isAtStartOfScene();
		},

		isFullscreen: function isFullscreen() {
			return this.fullscreen;
		},

		expandScene: function expandScene() {
			var options = {
				index: this.currentSceneIndex
			};
			this.trigger('scene:expand', options);
		},

		collapseScene: function collapseScene() {
			this.trigger('scene:collapse', { index: this.currentSceneIndex });
		},

		onShowOverviewsChanged: function onShowOverviewsChanged() {
			if (!this.showEndOverview() && this.currentSceneIndex === this.endOverviewIndex) {
				this.selectScene({
					index: this.getLastSceneIndex()
				});
			}
			this.trigger('change:showOverviews');
		},

		hasOverview: function hasOverview() {
			return this.model.layout.hasOverview;
		},

		/** Returns true if the start overview frame should be shown, false otherwise. */
		showStartOverview: function showStartOverview() {
			return this.model.layout.hasOverview && this.model.layout.showOverviews.showStart;
		},

		/** Returns true if the start overview frame should be shown, false otherwise.
   * This one is used when we're in authoring mode and show the overview for editing
   * purposes but it may not be shown in consumption mode.
  */
		showAuthoringOverview: function showAuthoringOverview() {
			return this.model.layout.hasOverview && (this.model.layout.showOverviews.showStart || this.authoring);
		},

		/** Returns true if the end overview frame should be shown, false otherwise. */
		showEndOverview: function showEndOverview() {
			return this.model.layout.hasOverview && this.model.layout.showOverviews.showEnd;
		},

		didEnterFullScreen: function didEnterFullScreen() {
			this.fullscreen = true;
		},

		didExitFullScreen: function didExitFullScreen() {
			this.fullscreen = false;
		},

		/*
  * Event handlers.
  */

		onModeChanged: function onModeChanged(event) {
			this.authoring = event.authoring;
			if (!this.showAuthoringOverview() && this.currentSceneIndex === this.startOverviewIndex) {
				this.selectScene({
					index: 0,
					play: false
				});
			}

			if (!this.authoring && this.isRefreshData()) {
				this.selectScene({
					index: this.currentSceneIndex,
					play: false,
					forceSelect: true,
					refreshData: true
				});
			}

			this.trigger('mode:change', { authoring: this.authoring });
		},

		onAddLayouts: function onAddLayouts(event) {
			var addLayoutArray = event.value.parameter.addLayoutArray;
			_.each(addLayoutArray, this.onAddLayout.bind(this));
		},

		onAddLayout: function onAddLayout(addLayout) {
			var layoutModel = this.model.layout.findModel(addLayout.model.id);
			var sceneCount = this.getSceneCount();
			if (this.sceneCount !== sceneCount) {
				this.sceneCount = sceneCount;

				var insertBefore = addLayout.insertBefore ? addLayout.insertBefore : null;
				var sceneIndex = this.getSceneIndex(layoutModel.id);
				this.trigger('scene:add', {
					scene: layoutModel,
					index: sceneIndex,
					insertBefore: insertBefore
				});
			}
		},

		onRemoveLayout: function onRemoveLayout(event) {
			var sceneCount = this.getSceneCount();
			if (this.sceneCount !== sceneCount) {
				this.sceneCount = sceneCount;
				_.each(event.value.parameter, function (sceneId) {
					this.trigger('scene:remove', {
						id: sceneId
					});
				}.bind(this));

				this.timelineController.onRemoveLayout(event);

				// When removing a scene the currentSceneIndex value will point to the removed scene's sibling.
				// If there is no n+1 sibling (meaning the last scene was removed) choose the value for the previous sibling
				var selectedIndex = this.currentSceneIndex;
				if (selectedIndex >= sceneCount) {
					selectedIndex = sceneCount - 1;
				}

				this.selectScene({
					index: selectedIndex
				});
			}
		},

		onPageSizeChange: function onPageSizeChange(payload) {
			this.trigger('change:pageSize', payload.value);
		},

		onTimeUpdated: function onTimeUpdated(evt) {
			this._triggerTimeUpdated(evt.currentTime, evt.sceneId);
		},

		_hideSharePanel: function _hideSharePanel() {
			if (this.shareState) {
				if (this.shareState.slideout) {
					this.shareState.slideout.hide({ hideOnly: true });
				}
				this.shareState = null;
			}
		},

		onTimeStateChanged: function onTimeStateChanged(evt) {
			this._hideSharePanel();
			this._triggerPlayStateUpdated(evt);
		},

		onNavigateMarkersChange: function onNavigateMarkersChange(evt) {
			this.trigger('navigateMarkers:change', evt);
		},

		onKioskModeChange: function onKioskModeChange(evt) {
			this.trigger('kioskMode:change', evt);
		},

		onNavigationStarted: function onNavigationStarted(evt) {
			this.cancelPlaythroughTimer();

			this.currentSceneIndex = evt.index;
			this.currentSceneId = evt.scene.id;

			this._updateSelectedScene();
			this._triggerSceneChanged();

			this.trigger('scene:select', evt);

			// hide share panel whenever a scene is about to play
			this._hideSharePanel();

			// hide the filter dock if navigating to an overview scene
			// also trigger playthrough since overviews have no duration
			if (evt.overview || evt.index < 0) {
				this.playThrough(evt);
				this.eventRouter.trigger('filterDock:disable');
			} else if (!this.isFullscreen() && evt.scene) {
				this.eventRouter.trigger('filterDock:enable');
			}
		},

		onNavigationComplete: function onNavigationComplete(evt) {
			this.trigger('navigation:complete', evt);
		},

		_onLayoutTypeChanged: function _onLayoutTypeChanged(evt) {
			this.eventRouter.trigger('properties:refreshPane', {});
			this.trigger('layoutType:changed', evt);
		},

		/*
  * Helpers.
  */

		_updateSelectedScene: function _updateSelectedScene() {
			var scene = this.getScene(this.currentSceneIndex);
			this.timelineController.setScene(scene);
		},

		_triggerTimeUpdated: function _triggerTimeUpdated(time, sceneId) {
			var timeLabel = this.timelineController.getTimeLabel(time, true);

			this.trigger('time:update', { time: time, label: timeLabel, sceneId: sceneId });
		},

		_triggerPlayStateUpdated: function _triggerPlayStateUpdated(event) {
			this.trigger('playState:change', event);
		},

		_triggerSceneChanged: function _triggerSceneChanged() {
			if (this.currentSceneIndex >= 0) {
				var modelId = this.getScene(this.currentSceneIndex).id;
				this.eventRouter.trigger('tab:tabChanged', { modelId: modelId });
			}
		},

		getTimelineAPI: function getTimelineAPI() {
			return this.timelineController.getAPI();
		}
	});

	return Controller;
});
//# sourceMappingURL=StoryPaneController.js.map