361 lines
12 KiB
JavaScript
361 lines
12 KiB
JavaScript
/*global Dropbox */
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define([
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"jquery",
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"underscore",
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"constants",
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"core",
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"storage",
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"logger",
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"eventMgr",
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"classes/AsyncTask",
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"config",
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], function($, _, constants, core, storage, logger, eventMgr, AsyncTask) {
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var client;
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var authenticated = false;
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var dropboxHelper = {};
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// Listen to offline status changes
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var isOffline = false;
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eventMgr.addListener("onOfflineChanged", function(isOfflineParam) {
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isOffline = isOfflineParam;
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});
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// Try to connect dropbox by downloading client.js
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function connect(task) {
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task.onRun(function() {
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if(isOffline === true) {
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client = undefined;
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task.error(new Error("Operation not available in offline mode.|stopPublish"));
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return;
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}
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if(client !== undefined) {
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task.chain();
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return;
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}
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$.ajax({
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url: "libs/dropbox.min.js",
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dataType: "script",
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timeout: constants.AJAX_TIMEOUT
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}).done(function() {
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client = new Dropbox.Client({
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key: constants.DROPBOX_APP_KEY,
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secret: constants.DROPBOX_APP_SECRET
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});
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client.authDriver(new Dropbox.AuthDriver.Popup({
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receiverUrl: constants.BASE_URL + "html/dropbox-oauth-receiver.html",
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rememberUser: true
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}));
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task.chain();
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}).fail(function(jqXHR) {
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var error = {
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status: jqXHR.status,
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responseText: jqXHR.statusText
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};
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handleError(error, task);
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});
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});
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}
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// Try to authenticate with Oauth
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function authenticate(task) {
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task.onRun(function() {
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if(authenticated === true) {
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task.chain();
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return;
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}
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var immediate = true;
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function oauthRedirect() {
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core.redirectConfirm('You are being redirected to <strong>Dropbox</strong> authorization page.', function() {
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task.chain(localAuthenticate);
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}, function() {
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task.error(new Error('Operation canceled.'));
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});
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}
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function localAuthenticate() {
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if(immediate === false) {
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// If not immediate we add time for user to enter his
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// credentials
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task.timeout = constants.ASYNC_TASK_LONG_TIMEOUT;
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}
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else {
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client.reset();
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}
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client.authenticate({
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interactive: !immediate
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}, function(error, client) {
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// Success
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if(client.isAuthenticated() === true) {
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authenticated = true;
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task.chain();
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return;
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}
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// If immediate did not work retry without immediate flag
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if(immediate === true) {
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immediate = false;
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task.chain(oauthRedirect);
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return;
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}
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// Error
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task.error(new Error("Access to Dropbox account is not authorized."));
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});
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}
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task.chain(localAuthenticate);
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});
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}
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dropboxHelper.upload = function(path, content, callback) {
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var result;
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var task = new AsyncTask();
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connect(task);
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authenticate(task);
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task.onRun(function() {
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client.writeFile(path, content, function(error, stat) {
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if(!error) {
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result = stat;
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task.chain();
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return;
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}
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// Handle error
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if(error.status === 400) {
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error = 'Could not upload document into path "' + path + '".';
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}
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handleError(error, task);
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});
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});
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task.onSuccess(function() {
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callback(undefined, result);
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});
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task.onError(function(error) {
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callback(error);
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});
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task.enqueue();
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};
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dropboxHelper.checkChanges = function(lastChangeId, callback) {
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var changes = [];
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var newChangeId = lastChangeId || 0;
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var task = new AsyncTask();
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connect(task);
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authenticate(task);
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task.onRun(function() {
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function retrievePageOfChanges() {
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client.pullChanges(newChangeId, function(error, pullChanges) {
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if(error) {
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handleError(error, task);
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return;
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}
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// Retrieve success
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newChangeId = pullChanges.cursor();
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if(pullChanges.changes !== undefined) {
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changes = changes.concat(pullChanges.changes);
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}
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if(pullChanges.shouldPullAgain) {
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task.chain(retrievePageOfChanges);
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}
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else {
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task.chain();
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}
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});
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}
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task.chain(retrievePageOfChanges);
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});
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task.onSuccess(function() {
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callback(undefined, changes, newChangeId);
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});
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task.onError(function(error) {
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callback(error);
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});
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task.enqueue();
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};
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dropboxHelper.downloadMetadata = function(paths, callback) {
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var result = [];
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var task = new AsyncTask();
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connect(task);
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authenticate(task);
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task.onRun(function() {
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function recursiveDownloadMetadata() {
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if(paths.length === 0) {
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task.chain();
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return;
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}
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var path = paths[0];
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client.stat(path, function(error, stat) {
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if(stat) {
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result.push(stat);
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paths.shift();
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task.chain(recursiveDownloadMetadata);
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return;
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}
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handleError(error, task);
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});
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}
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task.chain(recursiveDownloadMetadata);
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});
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task.onSuccess(function() {
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callback(undefined, result);
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});
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task.onError(function(error) {
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callback(error);
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});
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task.enqueue();
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};
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dropboxHelper.downloadContent = function(objects, callback) {
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var result = [];
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var task = new AsyncTask();
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connect(task);
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authenticate(task);
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task.onRun(function() {
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function recursiveDownloadContent() {
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if(objects.length === 0) {
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task.chain();
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return;
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}
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var object = objects[0];
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result.push(object);
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var file;
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// object may be a file
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if(object.isFile === true) {
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file = object;
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}
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// object may be a change
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else if(object.wasRemoved !== undefined) {
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file = object.stat;
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}
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if(!file) {
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objects.shift();
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task.chain(recursiveDownloadContent);
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return;
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}
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client.readFile(file.path, function(error, data) {
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if(data) {
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file.content = data;
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objects.shift();
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task.chain(recursiveDownloadContent);
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return;
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}
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handleError(error, task);
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});
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}
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task.chain(recursiveDownloadContent);
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});
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task.onSuccess(function() {
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callback(undefined, result);
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});
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task.onError(function(error) {
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callback(error);
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});
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task.enqueue();
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};
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function handleError(error, task) {
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var errorMsg = true;
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if(error) {
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logger.error(error);
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// Try to analyze the error
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if(typeof error === "string") {
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errorMsg = error;
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}
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else {
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errorMsg = "Dropbox error (" + error.status + ": " + error.responseText + ").";
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if(error.status === 401 || error.status === 403) {
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authenticated = false;
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errorMsg = "Access to Dropbox account is not authorized.";
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task.retry(new Error(errorMsg), 1);
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return;
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}
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else if(error.status === 400 && error.responseText.indexOf("oauth_nonce") !== -1) {
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// A bug I guess...
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_.each(_.keys(storage), function(key) {
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// We have to remove the Oauth cache from the
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// storage
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if(key.indexOf("dropbox-auth") === 0) {
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storage.removeItem(key);
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}
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});
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authenticated = false;
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task.retry(new Error(errorMsg), 1);
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return;
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}
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else if(error.status <= 0) {
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client = undefined;
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authenticated = false;
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core.setOffline();
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errorMsg = "|stopPublish";
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}
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}
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}
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task.error(new Error(errorMsg));
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}
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var pickerLoaded = false;
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function loadPicker(task) {
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task.onRun(function() {
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if(pickerLoaded === true) {
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task.chain();
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return;
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}
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function chooserRedirect() {
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core.redirectConfirm('You are being redirected to <strong>Dropbox Chooser</strong> page.', function() {
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task.chain();
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}, function() {
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task.error(new Error('Operation canceled.'));
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});
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}
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$.ajax({
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url: "https://www.dropbox.com/static/api/1/dropbox.js",
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dataType: "script",
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timeout: constants.AJAX_TIMEOUT
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}).done(function() {
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pickerLoaded = true;
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task.chain(chooserRedirect);
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}).fail(function(jqXHR) {
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var error = {
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status: jqXHR.status,
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responseText: jqXHR.statusText
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};
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handleError(error, task);
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});
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});
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}
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dropboxHelper.picker = function(callback) {
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var paths = [];
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var task = new AsyncTask();
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// Add some time for user to choose his files
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task.timeout = constants.ASYNC_TASK_LONG_TIMEOUT;
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connect(task);
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loadPicker(task);
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task.onRun(function() {
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var options = {};
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options.multiselect = true;
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options.linkType = "direct";
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options.success = function(files) {
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for ( var i = 0; i < files.length; i++) {
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var path = files[i].link;
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path = path.replace(/.*\/view\/[^\/]*/, "");
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paths.push(decodeURI(path));
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}
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task.chain();
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};
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options.cancel = function() {
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task.chain();
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};
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Dropbox.choose(options);
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});
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task.onSuccess(function() {
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callback(undefined, paths);
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});
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task.onError(function(error) {
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callback(error);
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});
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task.enqueue();
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};
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return dropboxHelper;
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});
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