326 lines
8.4 KiB
JavaScript
326 lines
8.4 KiB
JavaScript
define(["jquery", "async-runner"], function($, asyncRunner) {
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// Dependencies
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var core = undefined;
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var client = undefined;
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var authenticated = false;
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var dropboxHelper = {};
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// Try to connect dropbox by downloading client.js
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function connect(task) {
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task.onRun(function() {
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if(core.isOffline === true) {
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client = undefined;
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core.showMessage("Operation not available in offline mode.");
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task.error();
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return;
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}
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if (client !== undefined) {
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task.chain();
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return;
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}
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$.ajax({
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url : "lib/dropbox.min.js",
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dataType : "script", timeout : AJAX_TIMEOUT
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}).done(function() {
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client = new Dropbox.Client({
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key: DROPBOX_APP_KEY,
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secret: DROPBOX_APP_SECRET
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});
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client.authDriver(new Dropbox.Drivers.Popup({
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receiverUrl: BASE_URL + "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() {
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core.setOffline();
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task.error(new Error("Network timeout"));
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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 localAuthenticate() {
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if (immediate === false) {
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core.showMessage("Please make sure the Dropbox authorization popup is not blocked by your browser.");
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// If not immediate we add time for user to enter his credentials
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task.timeout = ASYNC_TASK_LONG_TIMEOUT;
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}
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client.reset();
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client.authenticate({interactive: !immediate}, function(error, client) {
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// Success
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if (client.authState === Dropbox.Client.DONE) {
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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(localAuthenticate);
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return;
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}
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// Error
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var errorMsg = "Access to Dropbox account is not authorized.";
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core.showError(errorMsg);
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task.error(new Error(errorMsg));
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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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callback = callback || core.doNothing;
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var result = undefined;
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var task = asyncRunner.createTask();
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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 === Dropbox.ApiError.INVALID_PARAM) {
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error = 'Could not upload document into path "' + path + '".';
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}
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handleError(error, task, callback);
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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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asyncRunner.addTask(task);
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};
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dropboxHelper.checkChanges = function(lastChangeId, callback) {
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callback = callback || core.doNothing;
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var changes = [];
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var newChangeId = lastChangeId || 0;
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var task = asyncRunner.createTask();
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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, callback);
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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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} 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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asyncRunner.addTask(task);
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};
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dropboxHelper.downloadMetadata = function(paths, callback) {
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callback = callback || core.doNothing;
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var result = [];
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var task = asyncRunner.createTask();
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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.pop();
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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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task.chain(recursiveDownloadMetadata);
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return;
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}
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handleError(error, task, callback);
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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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asyncRunner.addTask(task);
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};
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dropboxHelper.downloadContent = function(objects, callback) {
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callback = callback || core.doNothing;
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var result = [];
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var task = asyncRunner.createTask();
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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.pop();
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result.push(object);
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var file = undefined;
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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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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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recursiveDownloadContent();
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return;
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}
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handleError(error, task, callback);
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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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asyncRunner.addTask(task);
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};
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function handleError(error, task, callback) {
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var errorMsg = true;
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if (error) {
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console.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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} else if (error.status === Dropbox.ApiError.INVALID_TOKEN
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|| error.status === Dropbox.ApiError.OAUTH_ERROR) {
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authenticated = false;
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task.retry();
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return;
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} else if(error.status === Dropbox.ApiError.INVALID_PARAM && error.responseText
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.indexOf("oauth_nonce") !== -1) {
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// A bug I guess...
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_.each(_.keys(localStorage), function(key) {
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// We have to remove the Oauth cache from the localStorage
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if(key.indexOf("dropbox-auth") === 0) {
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localStorage.removeItem(key);
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}
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});
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authenticated = false;
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task.retry();
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return;
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} else if (error.status === Dropbox.ApiError.NETWORK_ERROR) {
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client = undefined;
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authenticated = false;
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core.setOffline();
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} else {
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errorMsg = "Dropbox error ("
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+ error.status + ").";
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}
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core.showError(errorMsg);
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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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$.ajax({
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url : "https://www.dropbox.com/static/api/1/dropbox.js",
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dataType : "script", timeout : AJAX_TIMEOUT
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}).done(function() {
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pickerLoaded = true;
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task.chain();
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}).fail(function() {
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core.setOffline();
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task.error();
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});
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});
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}
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dropboxHelper.picker = function(callback) {
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callback = callback || core.doNothing;
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var paths = [];
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var task = asyncRunner.createTask();
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// Add some time for user to choose his files
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task.timeout = 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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core.showMessage("Please make sure the Dropbox chooser popup is not blocked by your browser.");
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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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asyncRunner.addTask(task);
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};
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dropboxHelper.init = function(coreModule) {
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core = coreModule;
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};
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return dropboxHelper;
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});
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