1087 lines
42 KiB
JavaScript
1087 lines
42 KiB
JavaScript
/**
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* Returns the function for getting the string of a specific
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* item given the name of the item type in Redis.
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* @param {string} itemString the name of the item
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* @return {Function} the function used to get the key for a specific item from Redis
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*/
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exports.getItemStringFunction = function(itemString) {
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var functions = {
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"messages" : redisAction.getMessageString,
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"shapes" : redisAction.getShapeString,
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"currentshapes" : redisAction.getShapeString
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};
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return functions[itemString];
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};
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/**
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* Returns the function for getting the string of all the items
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* given the name of the items in Redis
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* @param {string} itemString the name of the item
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* @return {Function} the function used to get the key for the list of specific items in Redis
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*/
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exports.getItemsStringFunction = function(itemString) {
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var functions = {
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"messages" : redisAction.getMessagesString,
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"shapes" : redisAction.getCurrentShapesString,
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"currentshapes" : redisAction.getCurrentShapesString
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};
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return functions[itemString];
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};
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/**
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* Get the key for the list of meetings in Redis
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* @return {string} the key for the list of meetings in Redis
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*/
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exports.getMeetingsString = function() {
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return "meetings";
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};
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/**
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* Get the string representing the key for the meeting
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* given the meetingID in Redis
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* @param {string} meetingID the ID of the meeting
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* @return {string} the key for the meeting given the meetingID in Redis
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*/
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exports.getMeetingString = function(meetingID) {
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return "meeting-" + meetingID;
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};
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/**
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* Get the string representing the key for the hash of all
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* the users for a specified meetingID in Redis
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* @param {string} meetingID the ID of the meeting
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* @return {string} the key for the hash of all the users for a specified meetingID in Redis
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*/
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exports.getUsersString = function(meetingID) {
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return "meeting-" + meetingID + "-users";
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};
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/**
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* Get the string representing the key for a specific sessionID in Redis
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* @param {string} meetingID the ID of the meeting
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* @param {string} sessionID the sessionID (unique ID) of the user
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* @return {string} the key for a specific sessionID in Redis
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*/
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exports.getUserString = function(meetingID, sessionID) {
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return "meeting-" + meetingID + "-user-" + sessionID;
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};
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/**
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* Get the string representing the key for the list of current users
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* in a specific meeting ID
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* @param {string} meetingID the ID of the meeting
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* @return {string} key for the list of current users in a specific meeting ID
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*/
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exports.getCurrentUsersString = function(meetingID) {
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return "meeting-" + meetingID + "-currentusers";
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};
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/**
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* Get the string representing the key for the hash of all
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* the messages for a specified meetingID in Redis
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* @param {string} meetingID the ID of the meeting
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* @param {string} presentationID the unique ID of the presentation in the meeting
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* @param {string} pageID the unique ID of the page in the presentation
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* @return {string} the key for the hash of all the messages for a specified meetingID in Redis
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*/
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exports.getMessagesString = function(meetingID, presentationID, pageID) {
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return "meeting-" + meetingID + "-messages";
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};
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/**
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* Get the string representing the key for a specific message in Redis
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* @param {string} meetingID the ID of the meeting
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* @param {string} presentationID the unique ID of the presentation in the meeting
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* @param {string} pageID the unique ID of the page in the presentation
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* @param {string} messageID the unique ID of the message in the public chat
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* @return {string} string representing the key for a specific message in Redis
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*/
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exports.getMessageString = function(meetingID, presentationID, pageID, messageID) {
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return "meeting-" + meetingID + "-message-" + messageID;
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};
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/**
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* Get the key for the list of presentations for a meeting ID
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* @param {string} meetingID the ID of the meeting
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* @return {string} key for the list of presentations for a meeting ID
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*/
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exports.getPresentationsString = function(meetingID) {
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return "meeting-" + meetingID + "-presentations";
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};
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/**
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* Get the key for a specific presentation in a meeting
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* @param {string} meetingID the ID of the meeting
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* @param {string} presentationID the unique ID of the presentation in the meeting
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* @return {string} key for a specific presentation in a meeting
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*/
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exports.getPresentationString = function(meetingID, presentationID) {
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return "meeting-" + meetingID + "-presentation-" + presentationID;
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};
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/**
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* Get the key for the pages in a specific presentation in a meeting
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* @param {string} meetingID the ID of the meeting
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* @param {string} presentationID the unique ID of the presentation in the meeting
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* @return {string} key for the pages in a specific presentation in a meeting
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*/
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exports.getPagesString = function(meetingID, presentationID) {
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return "meeting-" + meetingID + "-presentation-" + presentationID + "-pages";
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};
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/**
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* Get the key for the current presentation of the meeting
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* @param {string} meetingID the ID of the meeting
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* @return {string} key for the current presentation of the meeting
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*/
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exports.getCurrentPresentationString = function(meetingID) {
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return "meeting-" + meetingID + "-currentpresentation";
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};
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/**
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* Get the key for the current page in the presentation
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* @param {string} meetingID the ID of the meeting
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* @param {string} presentationID the unique ID of the presentation in the meeting
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* @return {string} key for the current page in the presentation
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*/
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exports.getCurrentPageString = function(meetingID, presentationID) {
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return "meeting-" + meetingID + "-presentation-" + presentationID + "-currentpage";
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};
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/**
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* Get key of specific page.
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* @param {string} meetingID the ID of the meeting
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* @param {string} presentationID the unique ID of the presentation in the meeting
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* @param {string} pageID the unique ID of the page in the presentation
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* @return {string} key of specific page.
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*/
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exports.getPageString = function(meetingID, presentationID, pageID) {
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return "meeting-" + meetingID + "-presentation-" + presentationID + "-page-" + pageID;
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};
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/**
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* Get key of page image.
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* @param {string} meetingID the ID of the meeting
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* @param {string} presentationID the unique ID of the presentation in the meeting
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* @param {string} pageID the unique ID of the page in the presentation
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* @return {string} key of page image.
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*/
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exports.getPageImageString = function(meetingID, presentationID, pageID) {
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return "meeting-" + meetingID + "-presentation-" + presentationID + "-page-" + pageID + "-image";
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};
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/**
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* Get key for list of current shapes for the page
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* @param {string} meetingID the ID of the meeting
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* @param {string} presentationID the unique ID of the presentation in the meeting
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* @param {string} pageID the unique ID of the page in the presentation
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* @return {string} key for list of current shapes for the page
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*/
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exports.getCurrentShapesString = function(meetingID, presentationID, pageID) {
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return "meeting-" + meetingID + "-presentation-" + presentationID + "-page-" + pageID + "-currentshapes";
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};
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/**
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* Get key for specific shape on page
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* @param {string} meetingID the ID of the meeting
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* @param {string} presentationID the unique ID of the presentation in the meeting
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* @param {string} pageID the unique ID of the page in the presentation
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* @param {string} shapeID the unique ID of the shape in the page
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* @return {string} key for specific shape on page
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*/
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exports.getShapeString = function(meetingID, presentationID, pageID, shapeID) {
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return "meeting-" + meetingID + "-presentation-" + presentationID + "-page-" + pageID + "-shape-" + shapeID;
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};
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/**
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* Get the key for the current viewbox
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* @param {string} meetingID the ID of the meeting
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* @return {string} the key for the current viewbox
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*/
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exports.getCurrentViewBoxString = function(meetingID) {
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return "meeting-" + meetingID + "-viewbox";
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};
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/**
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* Get the key for the current tool
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* @param {string} meetingID the ID of the meeting
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* @return {string} the key for the current tool
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*/
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exports.getCurrentToolString = function(meetingID) {
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return "meeting-" + meetingID + "-currenttool";
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};
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/**
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* Get the key for the presenter
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* @param {string} meetingID the ID of the meeting
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* @return {string} the key for the presenter
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*/
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exports.getPresenterString = function(meetingID) {
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return "meeting-" + meetingID + "-presenter";
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};
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/**
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* Get the key for the public ID for a user
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* @param {string} meetingID the ID of the meeting
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* @param {string} publicID the unique public ID of the user
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* @return {string} the key for the public ID for a user
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*/
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exports.getPublicIDString = function (meetingID, publicID) {
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return 'meeting-' + meetingID + '-publicID-' + publicID;
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};
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/**
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* Get the key for session ID for a user
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* @param {string} meetingID the ID of the meeting
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* @param {string} sessionID the sessionID (unique ID) of the user
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* @return {string} the key for session ID for a user
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*/
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exports.getSessionIDString = function (meetingID, sessionID) {
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return 'meeting-' + meetingID + '-sessionID-' + sessionID;
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};
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/**
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* Get the key for the width of a page image
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* @param {string} meetingID the ID of the meeting
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* @param {string} presentationID the unique ID of the presentation in the meeting
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* @param {string} pageID the unique ID of the page in the presentation
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* @return {string} the key for the width of a page image
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*/
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exports.getPageWidthString = function(meetingID, presentationID, pageID) {
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return 'meeting-' + meetingID + '-presentation-' + presentationID + '-page-' + pageID + '-width';
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};
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/**
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* Get the key for the height of a page image
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* @param {string} meetingID the ID of the meeting
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* @param {string} presentationID the unique ID of the presentation in the meeting
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* @param {string} pageID the unique ID of the page in the presentation
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* @return {string} the key for the height of a page image
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*/
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exports.getPageHeightString = function(meetingID, presentationID, pageID) {
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return 'meeting-' + meetingID + '-presentation-' + presentationID + '-page-' + pageID + '-height';
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};
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/**
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* Set the public and session ID to match one another
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* for lookup later
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* @param {string} meetingID the ID of the meeting
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* @param {string} sessionID the sessionID (unique ID) of the user
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* @param {string} publicID the unique public ID of the user
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* @param {Function} callback callback function
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*/
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exports.setIDs = function(meetingID, sessionID, publicID, callback) {
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store.set(redisAction.getSessionIDString(meetingID, sessionID), publicID, function(err, reply) {
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store.set(redisAction.getPublicIDString(meetingID, publicID), sessionID, function(err, reply) {
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if(callback) callback();
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});
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});
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};
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/**
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* Get the session ID from the public ID of a user
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* @param {string} meetingID the ID of the meeting
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* @param {string} publicID the unique public ID of the user
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* @param {Function} callback callback function
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* @return {undefined} callback is called with return value if applicable
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*/
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exports.getSessionIDFromPublicID = function(meetingID, publicID, callback) {
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store.get(redisAction.getPublicIDString(meetingID, publicID), function(err, sessionID) {
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callback(sessionID);
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});
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};
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/**
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* Get the public ID from the session ID of a user
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* @param {string} meetingID the ID of the meeting
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* @param {string} sessionID the sessionID (unique ID) of the user
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* @param {Function} callback callback function
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* @return {undefined} callback is called with return value if applicable
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*/
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exports.getPublicIDFromSessionID = function(meetingID, sessionID, callback) {
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store.get(redisAction.getSessionIDString(meetingID, sessionID), function(err, publicID) {
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callback(publicID);
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});
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};
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/**
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* Set the presenter from the public ID only
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* @param {string} meetingID the ID of the meeting
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* @param {string} publicID the unique public ID of the user
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* @param {Function} callback callback function
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*/
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exports.setPresenterFromPublicID = function(meetingID, publicID, callback) {
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redisAction.getSessionIDFromPublicID(meetingID, publicID, function(sessionID) {
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redisAction.setPresenter(meetingID, sessionID, publicID, function(success) {
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if(success) {
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console.log('set presenter to ' + sessionID);
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if(callback) callback(true);
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}
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else {
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console.log('could not set presenter to ' + sessionID);
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if(callback) callback(false);
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}
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});
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});
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};
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exports.setCurrentTool = function(meetingID, tool, callback) {
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store.set(redisAction.getCurrentToolString(meetingID), tool, function(err, reply) {
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if(reply) {
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if(callback) callback(true);
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}
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else if(err) {
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console.log(err);
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if(callback) callback(null);
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}
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});
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};
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/**
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* Set the presenter
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* @param {string} meetingID the ID of the meeting
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* @param {string} sessionID the sessionID (unique ID) of the user
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* @param {string} publicID the unique public ID of the user
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* @param {Function} callback callback function
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*/
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exports.setPresenter = function(meetingID, sessionID, publicID, callback) {
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store.hmset(redisAction.getPresenterString(meetingID), 'sessionID', sessionID, 'publicID', publicID, function(err, reply) {
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if(reply) {
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if(callback) callback(publicID);
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}
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else if(err) {
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console.log(err);
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if(callback) callback(false);
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}
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});
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};
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/**
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* Get the session ID (private) of the presenter
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* @param {string} meetingID the ID of the meeting
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* @param {Function} callback callback function
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* @return {undefined} callback is called with return value if applicable
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*/
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exports.getPresenterSessionID = function(meetingID, callback) {
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store.hget(redisAction.getPresenterString(meetingID), 'sessionID', function(err, reply) {
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if(reply) {
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callback(reply);
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}
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else if(err) {
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console.log(err);
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callback(null);
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}
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});
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};
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/**
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* Get the public ID of the presenter
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* @param {string} meetingID the ID of the meeting
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* @param {Function} callback callback function
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* @return {undefined} callback is called with return value if applicable
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*/
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exports.getPresenterPublicID = function(meetingID, callback) {
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store.hget(redisAction.getPresenterString(meetingID), 'publicID', function(err, reply) {
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if(reply) {
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callback(reply);
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}
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else if(err) {
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console.log(err);
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callback(null);
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}
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});
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};
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/**
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* Get the current tool of the meeting
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* @param {string} meetingID the ID of the meeting
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* @param {Function} callback callback function
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* @return {undefined} callback is called with return value if applicable
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*/
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exports.getCurrentTool = function(meetingID, callback) {
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store.get(redisAction.getCurrentToolString(meetingID), function(err, reply) {
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if(reply) {
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callback(reply);
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}
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else if(err) {
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console.log(err);
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callback(null);
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}
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});
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};
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/**
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* Delete the item list
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* @param {string} meetingID the ID of the meeting
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* @param {string} presentationID the unique ID of the presentation in the meeting
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* @param {string} pageID the unique ID of the page in the presentation
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* @param {string} itemName the name of the type of items being deleted
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* @param {Function} callback the callback function to be called when finished
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* @return {undefined} callback is called with return value if applicable
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*/
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exports.deleteItemList = function(meetingID, presentationID, pageID, itemName, callback) {
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//delete the list which contains the item ids
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store.del(redisAction.getItemsStringFunction(itemName)(meetingID, presentationID, pageID), function(err, reply) {
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if(reply) {
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console.log("REDIS: Deleted the list of items: " + itemName);
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}
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if(err) console.log("REDIS ERROR: could not delete list of items: " + itemName);
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});
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};
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/**
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* Deletes the items by itemName and an array of itemIDs (use helper)
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* @param {string} meetingID the ID of the meeting
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* @param {string} presentationID the unique ID of the presentation in the meeting
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* @param {string} pageID the unique ID of the page in the presentation
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* @param {string} itemName the name of the item
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* @param {string} itemIDs an array of itemIDs to delete
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* @return {undefined} callback is called with return value if applicable
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*/
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exports.deleteItems = function(meetingID, presentationID, pageID, itemName, itemIDs) {
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//delete each item
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for (var j = itemIDs.length - 1; j >= 0; j--) {
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store.del(redisAction.getItemStringFunction(itemName)(meetingID, presentationID, pageID, itemIDs[j]), function(err, reply) {
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if(reply) console.log("REDIS: Deleted item: " + itemName);
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if(err) console.log("REDIS ERROR: could not delete item: " + itemName);
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});
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};
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};
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/**
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* Delete a meeting
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* @param {string} meetingID the ID of the meeting
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* @param {Function} callback callback function
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* @return {undefined} callback is called with return value if applicable
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*/
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exports.deleteMeeting = function(meetingID, callback) {
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store.srem(redisAction.getMeetingsString(), meetingID, function(err, reply) {
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if(reply) {
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console.log("Deleted meeting " + meetingID + " from list of meetings.");
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if(callback) callback(true);
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}
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else if(err) {
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console.log("Meeting was not in the list of meetings.");
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if(callback) callback(false);
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}
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});
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};
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/**
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* Process of the meeting once all the users have left
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* For now, this simply deletes everything associated with the meeting from redis
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* @param {string} meetingID the ID of the meeting
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* @return {undefined} callback is called with return value if applicable
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*/
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exports.processMeeting = function(meetingID) {
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store.del(redisAction.getPresenterString(meetingID), function(err, reply) {
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console.log('deleted presenter');
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});
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store.del(redisAction.getCurrentViewBoxString(meetingID), function(err, reply) {
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console.log('deleted viewbox');
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});
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store.del(redisAction.getCurrentToolString(meetingID), function(err, reply) {
|
|
console.log('deleted current tool');
|
|
});
|
|
redisAction.deleteMeeting(meetingID);
|
|
redisAction.getPresentationIDs(meetingID, function(presIDs) {
|
|
for(var k = presIDs.length - 1; k >=0; k--) {
|
|
redisAction.getPageIDs(meetingID, presIDs[k], function(presID, pageIDs) {
|
|
for(var m = pageIDs.length - 1; m >= 0; m--) {
|
|
items = ['messages', 'shapes'];
|
|
var j = 0;
|
|
for (var j = items.length - 1; j >= 0; j--) {
|
|
//must iterate through all presentations and all pages
|
|
redisAction.getItemIDs(meetingID, presID, pageIDs[m], items[j], function(meetingID, presentationID, pageID, itemIDs, itemName) {
|
|
redisAction.deleteItems(meetingID, presentationID, pageID, itemName, itemIDs);
|
|
});
|
|
}
|
|
lists = ['currentshapes', 'messages'];
|
|
for (var n = lists.length - 1; n >= 0; n--) {
|
|
redisAction.deleteItemList(meetingID, presID, pageIDs[m], lists[n]);
|
|
}
|
|
}
|
|
});
|
|
redisAction.deletePages(meetingID, presIDs[k]); //delete all the pages for the associated presentation
|
|
}
|
|
});
|
|
redisAction.deletePresentations(meetingID); //delete all the presentations
|
|
};
|
|
|
|
/**
|
|
* Get the item IDs from the item name
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {string} presentationID the unique ID of the presentation in the meeting
|
|
* @param {string} pageID the unique ID of the page in the presentation
|
|
* @param {string} itemName the name of the type of items getting the IDs of
|
|
* @param {Function} callback the callback function to be called when finished
|
|
* @return {undefined} callback is called with return value if applicable
|
|
*/
|
|
exports.getItemIDs = function(meetingID, presentationID, pageID, itemName, callback) {
|
|
store.lrange(redisAction.getItemsStringFunction(itemName)(meetingID, presentationID, pageID), 0, -1, function(err, itemIDs) {
|
|
callback(meetingID, presentationID, pageID, itemIDs, itemName);
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Get a list of the current users of the meeting
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {Function} callback callback function
|
|
* @return {undefined} callback is called with return value if applicable
|
|
*/
|
|
exports.getCurrentUsers = function(meetingID, callback) {
|
|
store.smembers(redisAction.getCurrentUsersString(meetingID), function(err, reply) {
|
|
if(reply) {
|
|
callback(reply);
|
|
}
|
|
else if(err) {
|
|
}
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Set the image size to a image in a page
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {string} presentationID the unique ID of the presentation in the meeting
|
|
* @param {string} pageID the unique ID of the page in the presentation
|
|
* @param {string|number} width the value of the width of the image (in pixels)
|
|
* @param {string|number} height the value of the height of the image (in pixels)
|
|
* @param {Function} callback the callback function to be called when finished
|
|
*/
|
|
exports.setImageSize = function(meetingID, presentationID, pageID, width, height, callback) {
|
|
store.set(redisAction.getPageWidthString(meetingID, presentationID, pageID), width, function(err, reply) {
|
|
store.set(redisAction.getPageHeightString(meetingID, presentationID, pageID), height, function(err, reply) {
|
|
console.log('set size');
|
|
if(callback) callback(true);
|
|
});
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Get a image size from the image on the page
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {string} presentationID the unique ID of the presentation in the meeting
|
|
* @param {string} pageID the unique ID of the page in the presentation
|
|
* @param {Function} callback the callback function to be called when finished
|
|
* @return {undefined} callback is called with return value if applicable
|
|
*/
|
|
exports.getImageSize = function(meetingID, presentationID, pageID, callback) {
|
|
store.get(redisAction.getPageWidthString(meetingID, presentationID, pageID), function(err, width) {
|
|
store.get(redisAction.getPageHeightString(meetingID, presentationID, pageID), function(err, height) {
|
|
callback(width, height);
|
|
});
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Get presentation IDs for a meeting
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {Function} callback callback function
|
|
* @return {undefined} callback is called with return value if applicable
|
|
*/
|
|
exports.getPresentationIDs = function(meetingID, callback) {
|
|
store.smembers(redisAction.getPresentationsString(meetingID), function(err, presIDs) {
|
|
callback(presIDs);
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Get the page IDs for a presentation
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {string} presentationID the unique ID of the presentation in the meeting
|
|
* @param {Function} callback the callback function to be called when finished
|
|
* @return {undefined} callback is called with return value if applicable
|
|
*/
|
|
exports.getPageIDs = function(meetingID, presentationID, callback) {
|
|
store.lrange(redisAction.getPagesString(meetingID, presentationID), 0, -1, function(err, pageIDs) {
|
|
callback(presentationID, pageIDs);
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Checks the Redis datastore whether the session is valid
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {string} sessionID the sessionID (unique ID) of the user
|
|
* @param {Function} callback callback function returns true if valid session
|
|
* @return {undefined} callback is used to return value
|
|
*/
|
|
exports.isValidSession = function(meetingID, sessionID, callback) {
|
|
store.sismember(redisAction.getUsersString(meetingID), sessionID, function(err, isValid) {
|
|
callback(isValid);
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Calls a callback returning whether the
|
|
* meeting is running or not (true => running)
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {Function} callback callback function returns true if meeting is running
|
|
* @return {undefined} callback is used to return value
|
|
*/
|
|
exports.isMeetingRunning = function(meetingID, callback) {
|
|
store.sismember(redisAction.getMeetingsString(), meetingID, function(err, reply) {
|
|
if(reply == 1) {
|
|
callback(true);
|
|
}
|
|
else if(reply == 0) {
|
|
callback(false);
|
|
}
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Delete all page references from a presentation.
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {string} presentationID the unique ID of the presentation in the meeting
|
|
* @param {Function} callback the callback function to be called when finished
|
|
* @return {undefined} callback is called with return value if applicable
|
|
*/
|
|
exports.deletePages = function(meetingID, presentationID, callback) {
|
|
//delete each page image
|
|
redisAction.getPageIDs(meetingID, presentationID, function(presentationID, pageIDs) {
|
|
for (var i = pageIDs.length - 1; i >= 0; i--) {
|
|
redisAction.deletePageImage(meetingID, presentationID, pageIDs[i]);
|
|
};
|
|
//delete list of pages
|
|
store.del(redisAction.getPagesString(meetingID, presentationID), function(err, reply) {
|
|
if(reply) console.log("REDIS: Deleted all pages");
|
|
if(err) console.log("REDIS ERROR: Couldn't delete all pages");
|
|
//delete currentpage
|
|
store.del(redisAction.getCurrentPageString(meetingID, presentationID), function(err, reply) {
|
|
if(reply) console.log("REDIS: Deleted current page");
|
|
if(err) console.log("REDIS ERROR: Couldn't delete current page");
|
|
if(callback) callback();
|
|
});
|
|
});
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Delete the reference to the image from a
|
|
* particular presentation page in a meeting
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {string} presentationID the unique ID of the presentation in the meeting
|
|
* @param {string} pageID the unique ID of the page in the presentation
|
|
* @param {Function} callback the callback function to be called when finished
|
|
* @return {undefined} callback is called with return value if applicable
|
|
*/
|
|
exports.deletePageImage = function(meetingID, presentationID, pageID, callback) {
|
|
store.del(redisAction.getPageImageString(meetingID, presentationID, pageID), function(err, reply) {
|
|
if(reply) console.log("REDIS: Deleted page image");
|
|
if(err) console.log("REDIS ERROR: Could not delete page image");
|
|
if(callback) callback();
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Delete all presentation references from the meeting
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {Function} callback callback function
|
|
* @return {undefined} callback is called with return value if applicable
|
|
*/
|
|
exports.deletePresentations = function(meetingID, callback) {
|
|
store.del(redisAction.getPresentationsString(meetingID), function(err, reply) {
|
|
if(reply) console.log("REDIS: Deleted all presentations");
|
|
else console.log("REDIS ERROR: Couldn't delete all presentations");
|
|
store.del(redisAction.getCurrentPresentationString(meetingID), function(err, reply) {
|
|
if(reply) console.log("REDIS: Deleted current presentation");
|
|
if(err) console.log("REDIS ERROR: Couldn't delete current presentation");
|
|
if(callback) callback();
|
|
});
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Delete the user from Redis
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {string} sessionID the sessionID (unique ID) of the user
|
|
* @param {Function} callback callback function
|
|
* @return {undefined} callback is called with return value if applicable
|
|
*/
|
|
exports.deleteUser = function(meetingID, sessionID, callback) {
|
|
store.srem(redisAction.getUsersString(meetingID), sessionID, function(err, num_deleted) {
|
|
store.del(redisAction.getUserString(meetingID, sessionID), function(err, reply) {
|
|
callback(true);
|
|
});
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Remove the current user from the list of current user
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {string} sessionID the sessionID (unique ID) of the user
|
|
* @param {Function} callback callback function
|
|
* @return {undefined} callback is called with return value if applicable
|
|
*/
|
|
exports.deleteCurrentUser = function(meetingID, sessionID, callback) {
|
|
store.srem(redisAction.getCurrentUsersString(meetingID), sessionID, function(err, num_deleted) {
|
|
callback(true);
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Gets all the properties associated with a specific user (sessionID)
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {string} sessionID the sessionID (unique ID) of the user
|
|
* @param {Function} callback callback function
|
|
* @return {undefined} callback is called with return value if applicable
|
|
*/
|
|
exports.getUserProperties = function(meetingID, sessionID, callback) {
|
|
store.hgetall(redisAction.getUserString(meetingID, sessionID), function(err, properties) {
|
|
callback(properties);
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Gets a single property from a specific user
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {string} sessionID the sessionID (unique ID) of the user
|
|
* @param {string} property the name of the property from the users list of properties to get
|
|
* @param {Function} callback callback function
|
|
* @return {undefined} callback is called with return value if applicable
|
|
*/
|
|
exports.getUserProperty = function(meetingID, sessionID, property, callback) {
|
|
store.hget(redisAction.getUserString(meetingID, sessionID), property, function(err, prop) {
|
|
if(prop) callback(prop);
|
|
if(err) {
|
|
console.log(err);
|
|
callback(null);
|
|
}
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Get all users and their data in an array
|
|
* (users are in a set, not a list, because they need to be accessed with O(1))
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {Function} callback callback function
|
|
* @return {undefined} callback is called with return value if applicable
|
|
*/
|
|
exports.getUsers = function (meetingID, callback) {
|
|
users = [];
|
|
usercount = 0;
|
|
usersdone = 0;
|
|
|
|
store.smembers(redisAction.getUsersString(meetingID), function (err, userids) {
|
|
usercount = userids.length;
|
|
for (var i = usercount - 1; i >= 0; i--){
|
|
store.hgetall(redisAction.getUserString(meetingID, userids[i]), function (err, props) {
|
|
users.push(props);
|
|
usersdone++;
|
|
if (usercount == usersdone) {
|
|
callback(users);
|
|
}
|
|
});
|
|
};
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Get the page image filename
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {string} presentationID the unique ID of the presentation in the meeting
|
|
* @param {string} pageID the unique ID of the page in the presentation
|
|
* @param {Function} callback the callback function to be called when finished
|
|
* @return {undefined} callback is called with return value if applicable
|
|
*/
|
|
exports.getPageImage = function(meetingID, presentationID, pageID, callback) {
|
|
store.get(redisAction.getPageImageString(meetingID, presentationID, pageID), function(err, filename) {
|
|
if(filename) {
|
|
console.log(filename);
|
|
callback(pageID, filename);
|
|
}
|
|
else console.log("REDIS ERROR: Couldn't get page image");
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Get array of items by item name and meeting id
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {string} presentationID the unique ID of the presentation in the meeting
|
|
* @param {string} pageID the unique ID of the page in the presentation
|
|
* @param {string} item the name of the type of item
|
|
* @param {Function} callback the callback function to be called when finished
|
|
* @return {undefined} callback is called with return value if applicable
|
|
*/
|
|
exports.getItems = function(meetingID, presentationID, pageID, item, callback) {
|
|
var items = [];
|
|
var itemCount = 0;
|
|
var itemsDone = 0;
|
|
var itemsGetFunction;
|
|
var itemGetFunction;
|
|
|
|
itemGetFunction = redisAction.getItemStringFunction(item);
|
|
itemsGetFunction = redisAction.getItemsStringFunction(item);
|
|
|
|
store.lrange(itemsGetFunction(meetingID, presentationID, pageID), 0, -1, function (err, itemIDs) {
|
|
itemCount = itemIDs.length;
|
|
if(itemCount == 0) callback([]);
|
|
for (var i = itemCount - 1; i >= 0; i--) {
|
|
store.hgetall(itemGetFunction(meetingID, presentationID, pageID, itemIDs[i]), function(err, itemHash) {
|
|
items.push(itemHash);
|
|
itemsDone++;
|
|
if (itemCount == itemsDone) {
|
|
callback(items);
|
|
}
|
|
});
|
|
};
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Get the current presentation ID for the meeting
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {Function} callback callback function
|
|
* @return {undefined} callback is called with return value if applicable
|
|
*/
|
|
exports.getCurrentPresentationID = function(meetingID, callback) {
|
|
store.get(redisAction.getCurrentPresentationString(meetingID), function(err, currPresID) {
|
|
if(currPresID) {
|
|
callback(currPresID);
|
|
}
|
|
else console.log("REDIS ERROR: Couldn't get current presentationID");
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Change to the next page in the presentation
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {string} presentationID the unique ID of the presentation in the meeting
|
|
* @param {Function} callback the callback function to be called when finished
|
|
* @return {undefined} callback is called with return value if applicable
|
|
*/
|
|
exports.changeToNextPage = function(meetingID, presentationID, callback) {
|
|
var pages = redisAction.getPagesString(meetingID, presentationID);
|
|
store.lpop(pages, function(err, reply) {
|
|
store.rpush(pages, reply, function(err, reply) {
|
|
store.lindex(pages, 0, function(err, currPage){
|
|
if(currPage) {
|
|
callback(currPage);
|
|
}
|
|
else console.log("REDIS ERROR: Couldn't get current pageID");
|
|
});
|
|
});
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Change to the previous page in the presentation
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {string} presentationID the unique ID of the presentation in the meeting
|
|
* @param {Function} callback the callback function to be called when finished
|
|
* @return {undefined} callback is called with return value if applicable
|
|
*/
|
|
exports.changeToPrevPage = function(meetingID, presentationID, callback) {
|
|
var pages = redisAction.getPagesString(meetingID, presentationID);
|
|
//removes the last element and then returns it, only after appending it back
|
|
//to the beginning of the same list
|
|
store.rpoplpush(pages, pages, function(err, currPage) {
|
|
if(currPage) {
|
|
callback(currPage);
|
|
}
|
|
else console.log("REDIS ERROR: Couldn't get current pageID");
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Get the current page of the presentation
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {string} presentationID the unique ID of the presentation in the meeting
|
|
* @param {Function} callback the callback function to be called when finished
|
|
* @return {undefined} callback is called with return value if applicable
|
|
*/
|
|
exports.getCurrentPageID = function(meetingID, presentationID, callback) {
|
|
//The first element in the pages is always the current page
|
|
store.lindex(redisAction.getPagesString(meetingID, presentationID), 0, function(err, currPgID) {
|
|
if(currPgID) {
|
|
callback(currPgID);
|
|
}
|
|
else console.log("REDIS ERROR: Couldn't get current pageID");
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Create a new presentation for a meeting,
|
|
* and possibly set it as the current meeting
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {boolean} setCurrent set current presentation after creation (true or false)
|
|
* @param {Function} callback the callback function to be called when finished
|
|
* @return {undefined} callback is called with return value if applicable
|
|
*/
|
|
exports.createPresentation = function(meetingID, setCurrent, callback) {
|
|
var presentationID = rack(); //create a new unique presentationID
|
|
store.sadd(redisAction.getPresentationsString(meetingID), presentationID, function(err, reply) {
|
|
if(reply) {
|
|
console.log("REDIS: Added presentationID " + presentationID + " to set of presentations.");
|
|
if(setCurrent) {
|
|
redisAction.setCurrentPresentation(meetingID, presentationID, function() {
|
|
callback(presentationID);
|
|
});
|
|
}
|
|
else callback(presentationID);
|
|
}
|
|
else if(err) {
|
|
console.log("REDIS ERROR: Couldn't add presentationID " + presentationID + "to set of presentations");
|
|
callback(null);
|
|
}
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Set the current page of the presentation
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {string} presentationID the unique ID of the presentation in the meeting
|
|
* @param {string} pageID the unique ID of the page in the presentation
|
|
* @param {Function} callback the callback function to be called when finished
|
|
*/
|
|
exports.setCurrentPage = function(meetingID, presentationID, pageID, callback) {
|
|
store.set(redisAction.getCurrentPageString(meetingID, presentationID), pageID, function(err, reply) {
|
|
if(reply) console.log("REDIS: Set current pageID to " + pageID);
|
|
if(err) console.log("REDIS ERROR: Couldn't set current pageID to " + pageID);
|
|
if(callback) callback();
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Create a page for a presentation in a meeting
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {string} presentationID the unique ID of the presentation in the meeting
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* @param {string} imageName the file name of the image
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* @param {boolean} setCurrent set as current page after creating the page (true or false)
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* @param {Function} callback the callback function to be called when finished
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* @return {undefined} callback is called with return value if applicable
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*/
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exports.createPage = function(meetingID, presentationID, imageName, setCurrent, callback) {
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var pageID = rack(); //create a new unique pageID
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var afterPush = function(err, reply) {
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if(reply) {
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console.log("REDIS: Created page with ID " + pageID);
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redisAction.setPageImage(meetingID, presentationID, pageID, imageName, function() {
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callback(pageID, imageName);
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});
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|
}
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else if(err) {
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console.log("REDIS ERROR: Couldn't create page with ID " + pageID);
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|
callback(null);
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|
}
|
|
};
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|
|
|
console.log("Making page with id " + pageID);
|
|
if(setCurrent) {
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store.lpush(redisAction.getPagesString(meetingID, presentationID), pageID, afterPush);
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|
}
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|
else {
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|
store.rpush(redisAction.getPagesString(meetingID, presentationID), pageID, afterPush);
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|
}
|
|
};
|
|
|
|
/**
|
|
* Set the image for a particular page ID
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {string} presentationID the unique ID of the presentation in the meeting
|
|
* @param {string} pageID the unique ID of the page in the presentation
|
|
* @param {string} imageName the file name of the image
|
|
* @param {Function} callback the callback function to be called when finished
|
|
*/
|
|
exports.setPageImage = function(meetingID, presentationID, pageID, imageName, callback) {
|
|
store.set(redisAction.getPageImageString(meetingID, presentationID, pageID), imageName, function (err, reply) {
|
|
if(reply) console.log("REDIS: Set page " + pageID +" image to " + imageName);
|
|
else if(err) console.log("REDIS ERROR: Couldn't set page " + pageID +" image to " + imageName);
|
|
if(callback) callback();
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Set the current presentation
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {string} presentationID the unique ID of the presentation in the meeting
|
|
* @param {Function} callback the callback function to be called when finished
|
|
*/
|
|
exports.setCurrentPresentation = function(meetingID, presentationID, callback) {
|
|
store.set(redisAction.getCurrentPresentationString(meetingID), presentationID, function(err, reply) {
|
|
if(reply) console.log("REDIS: Set current presentationID to " + presentationID);
|
|
else if(err) console.log("REDIS ERROR: Couldn't set current presentationID"); //impossible because set never fails
|
|
if(callback) callback();
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Set the value of the current viewbox for the meeting
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {string} viewbox the string representing the viewbox value
|
|
* @param {Function} callback callback function
|
|
*/
|
|
exports.setViewBox = function(meetingID, viewbox, callback) {
|
|
store.set(redisAction.getCurrentViewBoxString(meetingID), viewbox, function(err, reply){
|
|
if(reply) {
|
|
if(callback) callback(true);
|
|
}
|
|
else if(err) {
|
|
console.log(err);
|
|
if(callback) callback(false);
|
|
}
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Get the current viewbox of the meeting
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {Function} callback callback function
|
|
* @return {undefined} callback is called with return value if applicable
|
|
*/
|
|
exports.getViewBox = function(meetingID, callback) {
|
|
store.get(redisAction.getCurrentViewBoxString(meetingID), function(err, reply) {
|
|
if(reply) {
|
|
if(callback) callback(reply);
|
|
}
|
|
else if(err) {
|
|
console.log(err);
|
|
if(callback) callback(null);
|
|
}
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Create a reference to a meeting
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {Function} callback callback function
|
|
* @return {undefined} callback is called with return value if applicable
|
|
*/
|
|
exports.createMeeting = function(meetingID, callback) {
|
|
store.sadd(redisAction.getMeetingsString(), meetingID); //create the meeting if not already created.
|
|
if(callback) callback();
|
|
};
|
|
|
|
/**
|
|
* Create a reference to a user
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {string} userID the unique session ID of the user
|
|
* @param {Function} callback callback function
|
|
* @return {undefined} callback is called with return value if applicable
|
|
*/
|
|
exports.createUser = function(meetingID, userID, callback) {
|
|
store.sadd(redisAction.getUsersString(meetingID), userID); //meeting-123-users.push(sessionID)
|
|
if(callback) callback();
|
|
};
|
|
|
|
/**
|
|
* Update user properties
|
|
* @param {string} meetingID the ID of the meeting
|
|
* @param {string} userID the unique session ID of the user
|
|
* @param {Object} properties a hash of properties to set as the users properties
|
|
* @param {Function} callback the callback function to be called when finished
|
|
* @return {undefined} callback is called with return value if applicable
|
|
*/
|
|
exports.updateUserProperties = function(meetingID, userID, properties, callback) {
|
|
properties.unshift(redisAction.getUserString(meetingID, userID));
|
|
properties.push(function(err, reply) {
|
|
if(reply) {
|
|
if(callback) callback(true);
|
|
}
|
|
else if(err) {
|
|
console.log(err);
|
|
if(callback) callback(false);
|
|
}
|
|
});
|
|
store.hmset.apply(store, properties);
|
|
};
|