289 lines
8.8 KiB
JavaScript
289 lines
8.8 KiB
JavaScript
define(["jquery", "core", "dropbox-provider", "gdrive-provider", "underscore"], function($, core) {
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var synchronizer = {};
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// Create a map with providerId: providerObject
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var providerMap = _.chain(arguments)
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.map(function(argument) {
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return argument && argument.providerId && [argument.providerId, argument];
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}).compact().object().value();
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// Used to know if user can force synchronization
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var uploadPending = false;
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// Allows external modules to update uploadPending flag
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synchronizer.notifyChange = function(fileIndex) {
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// Check that file has synchronized locations
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if(localStorage[fileIndex + ".sync"].length !== 1) {
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uploadPending = true;
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synchronizer.updateSyncButton();
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}
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};
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// Used to enable/disable the synchronization button
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synchronizer.updateSyncButton = function() {
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if(syncRunning === true || uploadPending === false || core.isOffline) {
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$(".action-force-sync").addClass("disabled");
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}
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else {
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$(".action-force-sync").removeClass("disabled");
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}
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};
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// Run updateSyncButton on online/offline event
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core.addOfflineListener(synchronizer.updateSyncButton);
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// Force the synchronization
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synchronizer.forceSync = function() {
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lastSync = 0;
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synchronizer.sync();
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};
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// Recursive function to upload a single file on multiple locations
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var uploadFileSyncIndexList = [];
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var uploadContent = undefined;
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var uploadContentCRC = undefined;
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var uploadTitle = undefined;
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var uploadTitleCRC = undefined;
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function locationUp(callback) {
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// No more synchronized location for this document
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if (uploadFileSyncIndexList.length === 0) {
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fileUp(callback);
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return;
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}
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// Dequeue a synchronized location
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var syncIndex = uploadFileSyncIndexList.pop();
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var syncAttributes = JSON.parse(localStorage[syncIndex]);
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// Use the specified provider to perform the upload
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providerMap[syncAttributes.provider].syncUp(
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uploadContent,
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uploadContentCRC,
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uploadTitle,
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uploadTitleCRC,
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syncAttributes,
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function(error, uploadFlag) {
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if(uploadFlag === true) {
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// If uploadFlag is true, request another upload cycle
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uploadCycle = true;
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// When page is refreshed, this flag is false but should be true here
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uploadPending = true;
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}
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if(error) {
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callback(error);
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return;
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}
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if(uploadFlag) {
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// Update syncAttributes in localStorage
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localStorage[syncIndex] = JSON.stringify(syncAttributes);
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}
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locationUp(callback);
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}
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);
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}
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// Recursive function to upload multiple files
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var uploadFileIndexList = [];
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function fileUp(callback) {
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// No more fileIndex to synchronize
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if (uploadFileIndexList.length === 0) {
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syncUp(callback);
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return;
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}
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// Dequeue a fileIndex
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var fileIndex = uploadFileIndexList.pop();
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var fileSyncIndexes = localStorage[fileIndex + ".sync"];
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if(fileSyncIndexes.length === 1) {
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fileUp(callback);
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return;
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}
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// Get document title/content
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uploadContent = localStorage[fileIndex + ".content"];
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uploadContentCRC = core.crc32(uploadContent);
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uploadTitle = localStorage[fileIndex + ".title"];
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uploadTitleCRC = core.crc32(uploadTitle);
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// Parse the list of synchronized locations associated to the document
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uploadFileSyncIndexList = _.compact(fileSyncIndexes.split(";"));
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locationUp(callback);
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}
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// Entry point for up synchronization (upload changes)
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var uploadCycle = false;
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function syncUp(callback) {
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if(uploadCycle === true) {
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// New upload cycle
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uploadCycle = false;
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uploadFileIndexList = _.compact(localStorage["file.list"].split(";"));
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fileUp(callback);
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}
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else {
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callback();
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}
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}
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// Recursive function to download changes from multiple providers
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var providerList = [];
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function providerDown(callback) {
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if(providerList.length === 0) {
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callback();
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return;
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}
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var provider = providerList.pop();
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provider.syncDown(function(error) {
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if(error) {
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callback(error);
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return;
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}
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providerDown(callback);
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});
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}
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// Entry point for down synchronization (download changes)
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function syncDown(callback) {
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providerList = _.values(providerMap);
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providerDown(callback);
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};
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// Main entry point for synchronization
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var syncRunning = false;
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var lastSync = 0;
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synchronizer.sync = function() {
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// If sync is already running or timeout is not reached or offline
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if (syncRunning || lastSync + SYNC_PERIOD > core.currentTime || core.isOffline) {
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return;
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}
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syncRunning = true;
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uploadCycle = true;
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lastSync = core.currentTime;
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synchronizer.updateSyncButton();
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function isError(error) {
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if(error !== undefined) {
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console.error(error);
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syncRunning = false;
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synchronizer.updateSyncButton();
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return true;
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}
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return false;
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}
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syncDown(function(error) {
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if(isError(error)) {
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return;
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}
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syncUp(function(error) {
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if(isError(error)) {
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return;
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}
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syncRunning = false;
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uploadPending = false;
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});
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});
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};
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// Run sync function periodically
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core.addPeriodicCallback(synchronizer.sync);
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// Used to populate the "Manage synchronization" dialog
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var lineTemplate = ['<div class="input-prepend input-append">',
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'<span class="add-on" title="<%= provider.providerName %>">',
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'<i class="icon-<%= provider.providerId %>"></i></span>',
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'<input class="span5" type="text" value="<%= syncDesc %>" disabled />',
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'</div>'].join("");
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var removeButtonTemplate = '<a class="btn" title="Remove this location"><i class="icon-trash"></i></a>';
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synchronizer.refreshManageSync = function() {
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var fileIndex = core.fileManager.getCurrentFileIndex();
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var syncIndexList = _.compact(localStorage[fileIndex + ".sync"].split(";"));
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$(".msg-no-sync, .msg-sync-list").addClass("hide");
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$("#manage-sync-list .input-append").remove();
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if (syncIndexList.length > 0) {
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$(".msg-sync-list").removeClass("hide");
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} else {
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$(".msg-no-sync").removeClass("hide");
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}
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_.each(syncIndexList, function(syncIndex) {
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var syncAttributes = JSON.parse(localStorage[syncIndex]);
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var syncDesc = syncAttributes.id || syncAttributes.path;
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lineElement = $(_.template(lineTemplate, {
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provider: providerMap[syncAttributes.provider],
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syncDesc: syncDesc
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}));
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lineElement.append($(removeButtonTemplate).click(function() {
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core.fileManager.removeSync(syncIndex);
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core.fileManager.updateFileTitles();
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}));
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$("#manage-sync-list").append(lineElement);
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});
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};
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// Used to enable/disable provider synchronization
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synchronizer.resetSyncFlags = function() {
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_.each(providerMap, function(provider) {
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provider.useSync = false;
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});
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};
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synchronizer.getSyncAttributesFromFile = function(fileIndex) {
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var syncIndexList = _.compact(localStorage[fileIndex + ".sync"].split(";"));
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var attributesList = [];
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_.each(syncIndexList, function(syncIndex) {
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var syncAttributes = JSON.parse(localStorage[syncIndex]);
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attributesList.push(syncAttributes);
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providerMap[syncAttributes.provider].useSync = true;
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});
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return attributesList;
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};
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core.onReady(function() {
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// Init each provider
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_.each(providerMap, function(provider) {
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// Provider's import button
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$(".action-sync-import-" + provider.providerId).click(function(event) {
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provider.importFiles(event);
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});
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// Provider's export button
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$(".action-sync-export-" + provider.providerId).click(function(event) {
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var fileIndex = core.fileManager.getCurrentFileIndex();
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var title = localStorage[fileIndex + ".title"];
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var content = localStorage[fileIndex + ".content"];
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provider.exportFile(event, title, content, function(error, syncIndex) {
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if(error) {
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return;
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}
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localStorage[fileIndex + ".sync"] += syncIndex + ";";
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synchronizer.refreshManageSync();
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core.fileManager.updateFileTitles();
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core.showMessage('"' + title
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+ '" will now be synchronized on ' + provider.providerName + '.');
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});
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});
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// Provider's manual sync button
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$(".action-sync-manual-" + provider.providerId).click(function(event) {
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var fileIndex = core.fileManager.getCurrentFileIndex();
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var title = localStorage[fileIndex + ".title"];
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var content = localStorage[fileIndex + ".content"];
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provider.exportManual(event, title, content, function(error, syncIndex) {
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if(error) {
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return;
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}
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localStorage[fileIndex + ".sync"] += syncIndex + ";";
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synchronizer.refreshManageSync();
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core.fileManager.updateFileTitles();
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core.showMessage('"' + title
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+ '" will now be synchronized on ' + provider.providerName + '.');
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});
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});
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});
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synchronizer.updateSyncButton();
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$(".action-force-sync").click(function() {
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if(!$(this).hasClass("disabled")) {
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synchronizer.forceSync();
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}
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});
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});
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return synchronizer;
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});
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