502 lines
14 KiB
JavaScript
502 lines
14 KiB
JavaScript
define(["jquery", "core", "async-runner"], function($, core, asyncRunner) {
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var connected = false;
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var authenticated = false;
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var googleHelper = {};
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// Try to connect Gdrive by downloading client.js
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function connect(task) {
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task.onRun(function() {
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if(core.isOffline === true) {
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connected = false;
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core.showMessage("Operation not available in offline mode.");
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task.error();
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return;
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}
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if (connected === true) {
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task.chain();
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return;
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}
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delayedFunction = function() {
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connected = true;
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task.chain();
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};
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$.ajax({
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url : "https://apis.google.com/js/client.js?onload=runDelayedFunction",
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dataType : "script", timeout : AJAX_TIMEOUT
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}).fail(function() {
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core.setOffline();
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task.error(new Error("Network timeout|stopPublish"));
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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 Google 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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gapi.auth.authorize({ 'client_id' : GOOGLE_CLIENT_ID,
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'scope' : GOOGLE_SCOPES, 'immediate' : immediate }, function(
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authResult) {
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gapi.client.load('drive', 'v2', function() {
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if (!authResult || authResult.error) {
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// If immediate did not work retry without immediate flag
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if (connected === true && 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 Google account is not authorized.";
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core.showError(errorMsg);
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task.error(new Error(errorMsg));
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return;
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}
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// Success
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authenticated = true;
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task.chain();
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});
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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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googleHelper.upload = function(fileId, parentId, title, content, etag, 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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var boundary = '-------314159265358979323846';
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var delimiter = "\r\n--" + boundary + "\r\n";
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var close_delim = "\r\n--" + boundary + "--";
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var contentType = 'text/x-markdown';
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var metadata = { title : title, mimeType : contentType };
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if (parentId !== undefined) {
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// Specify the directory
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metadata.parents = [ { kind : 'drive#fileLink',
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id : parentId } ];
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}
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var path = '/upload/drive/v2/files';
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var method = 'POST';
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if (fileId !== undefined) {
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// If it's an update
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path += "/" + fileId;
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method = 'PUT';
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}
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var headers = { 'Content-Type' : 'multipart/mixed; boundary="'
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+ boundary + '"', };
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if(etag !== undefined) {
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headers["If-Match"] = etag;
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}
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var base64Data = core.encodeBase64(content);
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var multipartRequestBody = delimiter
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+ 'Content-Type: application/json\r\n\r\n'
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+ JSON.stringify(metadata) + delimiter + 'Content-Type: '
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+ contentType + '\r\n'
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+ 'Content-Transfer-Encoding: base64\r\n' + '\r\n'
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+ base64Data + close_delim;
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var request = gapi.client
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.request({
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'path' : path,
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'method' : method,
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'params' : { 'uploadType' : 'multipart', },
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'headers' : headers,
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'body' : multipartRequestBody, });
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request.execute(function(response) {
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if (response && response.id) {
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// Upload success
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result = response;
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task.chain();
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return;
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}
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var error = response.error;
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// Handle error
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if(error !== undefined && fileId !== undefined) {
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if(error.code === 404) {
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error = 'File ID "' + fileId + '" not found on Google Drive.|removePublish';
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}
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else if(error.code === 412) {
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// We may have missed a file update
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localStorage.removeItem("sync.gdrive.lastChangeId");
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error = 'Conflict on file ID "' + fileId + '". Please restart the synchronization.';
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}
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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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googleHelper.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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var nextPageToken = undefined;
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function retrievePageOfChanges() {
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var request = undefined;
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if(nextPageToken === undefined) {
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request = gapi.client.drive.changes
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.list({ 'startChangeId' : newChangeId + 1 });
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}
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else {
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request = gapi.client.drive.changes
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.list({ 'pageToken' : nextPageToken });
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}
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request.execute(function(response) {
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if (!response || !response.largestChangeId) {
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// Handle error
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handleError(response.error, task, callback);
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return;
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}
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// Retrieve success
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newChangeId = response.largestChangeId;
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nextPageToken = response.nextPageToken;
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if (response.items !== undefined) {
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changes = changes.concat(response.items);
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}
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if (nextPageToken !== undefined) {
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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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asyncRunner.addTask(task);
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};
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googleHelper.downloadMetadata = function(ids, 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(ids.length === 0) {
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task.chain();
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return;
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}
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var id = ids.pop();
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var token = gapi.auth.getToken();
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var headers = {
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Authorization : token ? "Bearer " + token.access_token: null
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};
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$.ajax({
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url : "https://www.googleapis.com/drive/v2/files/" + id,
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headers : headers,
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dataType : "json",
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timeout : AJAX_TIMEOUT
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}).done(function(data, textStatus, jqXHR) {
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result.push(data);
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task.chain(recursiveDownloadMetadata);
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}).fail(function(jqXHR) {
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var error = {
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code: jqXHR.status,
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message: jqXHR.statusText
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};
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// Handle error
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if(error.code === 404) {
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error = 'File ID "' + id + '" not found on Google Drive.';
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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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googleHelper.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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// 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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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.kind == "drive#file") {
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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.kind == "drive#change") {
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file = object.file;
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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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var token = gapi.auth.getToken();
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var headers = {
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Authorization : token ? "Bearer " + token.access_token: null
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};
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$.ajax({
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url : file.downloadUrl,
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headers : headers,
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dataType : "text",
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timeout : AJAX_TIMEOUT
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}).done(function(data, textStatus, jqXHR) {
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file.content = data;
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task.chain(recursiveDownloadContent);
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}).fail(function(jqXHR) {
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var error = {
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code: jqXHR.status,
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message: jqXHR.statusText
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};
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// Handle error
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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 = undefined;
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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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}
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else if (error.code >= 500 && error.code < 600) {
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// Retry as described in Google's best practices
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task.retry();
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return;
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} else if (error.code === 401 || error.code === 403) {
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authenticated = false;
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task.retry();
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return;
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} else if (error.code <= 0) {
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connected = false;
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authenticated = false;
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core.setOffline();
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errorMsg = "|stopPublish";
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} else {
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errorMsg = "Google error (" + error.code + ": "
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+ error.message + ").";
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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 : "//www.google.com/jsapi",
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data : {key: GOOGLE_KEY},
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dataType : "script", timeout : AJAX_TIMEOUT
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}).done(function() {
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google.load('picker', '1', {callback: task.chain});
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pickerLoaded = true;
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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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googleHelper.picker = function(callback) {
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callback = callback || core.doNothing;
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var ids = [];
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var picker = undefined;
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var task = asyncRunner.createTask();
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connect(task);
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loadPicker(task);
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task.onRun(function() {
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var view = new google.picker.View(google.picker.ViewId.DOCS);
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view.setMimeTypes("text/x-markdown,text/plain");
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var pickerBuilder = new google.picker.PickerBuilder();
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pickerBuilder.enableFeature(google.picker.Feature.NAV_HIDDEN);
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pickerBuilder.enableFeature(google.picker.Feature.MULTISELECT_ENABLED);
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pickerBuilder.setAppId(GOOGLE_DRIVE_APP_ID);
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var token = gapi.auth.getToken();
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if(token) {
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pickerBuilder.setOAuthToken(token.access_token);
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}
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pickerBuilder.addView(view);
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pickerBuilder.addView(new google.picker.DocsUploadView());
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pickerBuilder.setCallback(function(data) {
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if (data.action == google.picker.Action.PICKED ||
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data.action == google.picker.Action.CANCEL) {
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if(data.action == google.picker.Action.PICKED) {
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for(var i=0; i<data.docs.length; i++) {
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ids.push(data.docs[i].id);
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}
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}
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$(".modal-backdrop, .picker").remove();
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task.chain();
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}
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});
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picker = pickerBuilder.build();
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$("body").append($("<div>").addClass("modal-backdrop").click(function() {
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picker.setVisible(false);
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$(".modal-backdrop, .picker").remove();
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task.chain();
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}));
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picker.setVisible(true);
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});
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task.onSuccess(function() {
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callback(undefined, ids);
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});
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task.onError(function(error) {
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if(picker !== undefined) {
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picker.setVisible(false);
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$(".modal-backdrop, .picker").remove();
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task.chain();
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}
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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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googleHelper.uploadBlogger = function(blogUrl, blogId, postId, title, content, callback) {
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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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var token = gapi.auth.getToken();
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var headers = {
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Authorization : token ? "Bearer " + token.access_token: null
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};
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function publish() {
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var url = "https://www.googleapis.com/blogger/v3/blogs/" + blogId + "/posts/";
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var data = {
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kind: "blogger#post",
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blog: { id: blogId },
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title: title,
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content: content
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};
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var type = "POST";
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// If it's an update
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if(postId !== undefined) {
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url += postId;
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data.id = postId;
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type = "PUT";
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}
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$.ajax({
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url : url,
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data: JSON.stringify(data),
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headers : headers,
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type: type,
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contentType: "application/json",
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dataType : "json",
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timeout : AJAX_TIMEOUT
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}).done(function(post, textStatus, jqXHR) {
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postId = post.id;
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task.chain();
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}).fail(function(jqXHR) {
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var error = {
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code: jqXHR.status,
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message: jqXHR.statusText
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};
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// Handle error
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if(error.code === 404 && postId !== undefined) {
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error = 'Post ' + postId + ' not found on Blogger.|removePublish';
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}
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handleError(error, task, callback);
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});
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}
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function getBlogId() {
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if(blogId !== undefined) {
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task.chain(publish);
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}
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$.ajax({
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url : "https://www.googleapis.com/blogger/v3/blogs/byurl",
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data: { url: blogUrl },
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headers : headers,
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dataType : "json",
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timeout : AJAX_TIMEOUT
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}).done(function(blog, textStatus, jqXHR) {
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blogId = blog.id;
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task.chain(publish);
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}).fail(function(jqXHR) {
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var error = {
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code: jqXHR.status,
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message: jqXHR.statusText
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};
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// Handle error
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if(error.code === 404) {
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error = 'Blog "' + blogUrl + '" not found on Blogger.|removePublish';
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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(getBlogId);
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});
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task.onSuccess(function() {
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callback(undefined, blogId, postId);
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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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return googleHelper;
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});
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