Stackedit/public/res/helpers/googleHelper.js

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/*global gapi, google */
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define([
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"underscore",
"jquery",
"constants",
"core",
"utils",
"storage",
"logger",
"settings",
"eventMgr",
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"classes/AsyncTask"
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], function(_, $, constants, core, utils, storage, logger, settings, eventMgr, AsyncTask) {
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var connected = false;
var authorizationMgrMap = {};
function AuthorizationMgr(accountId) {
var permissionList = {
profile: true
};
var refreshFlag = true;
_.each((storage[accountId + '.permissions'] || '').split(';'), function(permission) {
permission && (permissionList[permission] = true);
});
this.setRefreshFlag = function() {
refreshFlag = true;
};
this.isAuthorized = function(permission) {
return refreshFlag === false && _.has(permissionList, permission);
};
this.add = function(permission) {
permissionList[permission] = true;
storage[accountId + '.permissions'] = _.keys(permissionList).join(';');
refreshFlag = false;
};
this.getListWithNew = function(permission) {
var result = _.keys(permissionList);
if(!_.has(permissionList, permission)) {
result.push(permission);
}
return result;
};
var userId = storage[accountId + '.userId'];
this.setUserId = function(value) {
userId = value;
storage[accountId + '.userId'] = userId;
};
this.getUserId = function() {
return userId;
};
}
var googleHelper = {};
// Listen to offline status changes
var isOffline = false;
eventMgr.addListener("onOfflineChanged", function(isOfflineParam) {
isOffline = isOfflineParam;
});
// Try to connect by downloading client.js
function connect(task) {
task.onRun(function() {
if(isOffline === true) {
connected = false;
return task.error(new Error("Operation not available in offline mode.|stopPublish"));
}
if(connected === true) {
return task.chain();
}
window.delayedFunction = function() {
gapi.load("client", function() {
gapi.client.load('drive', 'v2', function() {
connected = true;
task.chain();
});
});
};
$.ajax({
url: "https://apis.google.com/js/api.js?onload=runDelayedFunction",
dataType: "script",
timeout: constants.AJAX_TIMEOUT
}).fail(function(jqXHR) {
var error = {
code: jqXHR.status,
message: jqXHR.statusText
};
handleError(error, task);
});
});
}
// Try to authenticate with Oauth
var scopeMap = {
profile: [
'https://www.googleapis.com/auth/userinfo.profile'
],
gdrive: [
'https://www.googleapis.com/auth/drive.install',
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settings.gdriveFullAccess === true ? 'https://www.googleapis.com/auth/drive' : 'https://www.googleapis.com/auth/drive.file'
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],
blogger: [
'https://www.googleapis.com/auth/blogger'
],
picasa: [
'https://www.googleapis.com/auth/photos'
]
};
googleHelper.getAuthorizationMgr = function(accountId) {
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var authorizationMgr = authorizationMgrMap[accountId];
if(!authorizationMgr) {
authorizationMgr = new AuthorizationMgr(accountId);
authorizationMgrMap[accountId] = authorizationMgr;
}
return authorizationMgr;
};
function authenticate(task, permission, accountId) {
var authorizationMgr = googleHelper.getAuthorizationMgr(accountId);
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task.onRun(function() {
var currentToken = gapi.auth.getToken();
var newToken;
function getTokenInfo() {
$.ajax({
url: 'https://www.googleapis.com/oauth2/v1/tokeninfo',
data: {
access_token: newToken.access_token
},
timeout: constants.AJAX_TIMEOUT,
type: "GET"
}).done(function(data) {
if(authorizationMgr.getUserId() && authorizationMgr.getUserId() != data.user_id) {
// Wrong user id, try again
startAuthenticate();
}
else {
authorizationMgr.setUserId(data.user_id);
authorizationMgr.add(permission);
authorizationMgr.token = newToken;
task.chain();
}
}).fail(function(jqXHR) {
var error = {
code: jqXHR.status,
message: jqXHR.statusText
};
handleError(error, task);
});
}
var authuser = 0;
var immediate;
function localAuthenticate() {
if(authuser > 5) {
return task.error(new Error('Unable to authenticate user ' + authorizationMgr.getUserId() + ', please sign in with Google.'));
}
if(immediate === false) {
task.timeout = constants.ASYNC_TASK_LONG_TIMEOUT;
}
var scopeList = _.chain(scopeMap).pick(authorizationMgr.getListWithNew(permission)).flatten().value();
gapi.auth.authorize({
client_id: constants.GOOGLE_CLIENT_ID,
scope: scopeList,
immediate: immediate,
authuser: immediate === false ? '' : authuser
}, function(authResult) {
newToken = gapi.auth.getToken();
gapi.auth.setToken(currentToken);
if(!authResult || authResult.error) {
if(connected === true && immediate === true) {
// If immediate did not work
if(authuser < 5 && authorizationMgr.getUserId()) {
// Try immediate with next authuser
authuser++;
}
else {
// retry without immediate flag
immediate = false;
}
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task.chain(oauthRedirect);
}
else {
// Error
task.error(new Error("Access to Google account is not authorized."));
}
}
else {
// Success but we need to check the user id
authorizationMgr.authuser = authuser;
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immediate === true && authuser++;
task.chain(getTokenInfo);
}
});
}
function oauthRedirect() {
if(immediate === true) {
return task.chain(localAuthenticate);
}
utils.redirectConfirm('You are being redirected to <strong>Google</strong> authorization page.', function() {
task.chain(localAuthenticate);
}, function() {
task.error(new Error('Operation canceled.'));
});
}
function startAuthenticate() {
immediate = true;
if(authorizationMgr.token && authorizationMgr.isAuthorized(permission)) {
return task.chain();
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}
if(!authorizationMgr.getUserId()) {
immediate = false;
}
task.chain(oauthRedirect);
}
startAuthenticate();
});
}
googleHelper.refreshGdriveToken = function(accountId) {
var task = new AsyncTask();
connect(task);
var authorizationMgr = authorizationMgrMap[accountId];
authorizationMgr && authorizationMgr.setRefreshFlag();
authenticate(task, 'gdrive', accountId);
task.enqueue();
};
function runWithToken(accountId, functionToRun) {
var currentToken = gapi.auth.getToken();
var authorizationMgr = authorizationMgrMap[accountId];
gapi.auth.setToken(authorizationMgr.token);
functionToRun();
gapi.auth.setToken(currentToken);
}
googleHelper.upload = function(fileId, parentId, title, content, contentType, etag, accountId, callback) {
var result;
var task = new AsyncTask();
connect(task);
authenticate(task, 'gdrive', accountId);
task.onRun(function() {
var boundary = '-------314159265358979323846';
var delimiter = "\r\n--" + boundary + "\r\n";
var close_delim = "\r\n--" + boundary + "--";
contentType = contentType || settings.markdownMimeType;
var metadata = {
title: title,
mimeType: contentType
};
if(parentId) {
// Specify the directory
metadata.parents = [
{
kind: 'drive#fileLink',
id: parentId
}
];
}
var path = '/upload/drive/v2/files';
var method = 'POST';
if(fileId) {
// If it's an update
path += "/" + fileId;
method = 'PUT';
}
var headers = {
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'Content-Type': 'multipart/mixed; boundary="' + boundary + '"'
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};
var base64Data = utils.encodeBase64(content);
var multipartRequestBody = [
delimiter,
'Content-Type: application/json\r\n\r\n',
JSON.stringify(metadata),
delimiter,
'Content-Type: ',
contentType,
'\r\n',
'Content-Transfer-Encoding: base64\r\n',
'\r\n',
base64Data,
close_delim
].join("");
runWithToken(accountId, function() {
var request = gapi.client.request({
'path': path,
'method': method,
'params': {
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'uploadType': 'multipart'
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},
'headers': headers,
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'body': multipartRequestBody
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});
request.execute(function(response) {
if(response && response.id) {
// Upload success
result = response;
result.content = content;
return task.chain();
}
var error = response.error;
// Handle error
if(error !== undefined && fileId !== undefined) {
if(error.code === 404) {
error = 'File ID "' + fileId + '" not found on Google Drive.|removePublish';
}
else if(error.code === 412) {
// We may have missed a file update
storage.removeItem(accountId + ".gdrive.lastChangeId");
error = 'Conflict on file ID "' + fileId + '". Please restart the synchronization.';
}
}
handleError(error, task);
});
});
});
task.onSuccess(function() {
callback(undefined, result);
});
task.onError(function(error) {
callback(error);
});
task.enqueue();
};
googleHelper.rename = function(fileId, title, accountId, callback) {
var result;
var task = new AsyncTask();
connect(task);
authenticate(task, 'gdrive', accountId);
task.onRun(function() {
var body = {'title': title};
runWithToken(accountId, function() {
var request = gapi.client.drive.files.patch({
'fileId': fileId,
'resource': body
});
request.execute(function(response) {
if(response && response.id) {
// Rename success
result = response;
return task.chain();
}
var error = response.error;
// Handle error
if(error !== undefined && fileId !== undefined) {
if(error.code === 404) {
error = 'File ID "' + fileId + '" not found on Google Drive.|removePublish';
}
}
handleError(error, task);
});
});
});
task.onSuccess(function() {
callback(undefined, result);
});
task.onError(function(error) {
callback(error);
});
task.enqueue();
};
googleHelper.checkChanges = function(lastChangeId, accountId, callback) {
var changes = [];
var newChangeId = lastChangeId || 0;
var task = new AsyncTask();
connect(task);
authenticate(task, 'gdrive', accountId);
task.onRun(function() {
var nextPageToken;
function retrievePageOfChanges() {
runWithToken(accountId, function() {
var request;
if(nextPageToken === undefined) {
request = gapi.client.drive.changes.list({
'startChangeId': newChangeId + 1
});
}
else {
request = gapi.client.drive.changes.list({
'pageToken': nextPageToken
});
}
request.execute(function(response) {
if(!response || !response.largestChangeId) {
// Handle error
return handleError(response.error, task);
}
// Retrieve success
newChangeId = response.largestChangeId;
nextPageToken = response.nextPageToken;
if(response.items !== undefined) {
changes = changes.concat(response.items);
}
if(nextPageToken !== undefined) {
task.chain(retrievePageOfChanges);
}
else {
task.chain();
}
});
});
}
task.chain(retrievePageOfChanges);
});
task.onSuccess(function() {
callback(undefined, changes, newChangeId);
});
task.onError(function(error) {
callback(error);
});
task.enqueue();
};
googleHelper.downloadMetadata = function(ids, accountId, callback, skipAuth) {
var result = [];
var task = new AsyncTask();
connect(task);
if(!skipAuth) {
authenticate(task, 'gdrive', accountId);
}
task.onRun(function() {
function recursiveDownloadMetadata() {
if(ids.length === 0) {
return task.chain();
}
var id = ids[0];
var headers = {};
var authorizationMgr = authorizationMgrMap[accountId];
if(authorizationMgr && authorizationMgr.token) {
headers.Authorization = "Bearer " + authorizationMgr.token.access_token;
}
$.ajax({
url: "https://www.googleapis.com/drive/v2/files/" + id,
headers: headers,
data: {
key: constants.GOOGLE_API_KEY
},
dataType: "json",
timeout: constants.AJAX_TIMEOUT
}).done(function(data) {
result.push(data);
ids.shift();
task.chain(recursiveDownloadMetadata);
}).fail(function(jqXHR) {
var error = {
code: jqXHR.status,
message: jqXHR.statusText
};
// Handle error
if(error.code === 404) {
error = 'File ID "' + id + '" not found on Google Drive.';
}
handleError(error, task);
});
}
task.chain(recursiveDownloadMetadata);
});
task.onSuccess(function() {
callback(undefined, result);
});
task.onError(function(error) {
callback(error);
});
task.enqueue();
};
googleHelper.downloadContent = function(objects, accountId, callback, skipAuth) {
var result = [];
var task = new AsyncTask();
// Add some time for user to choose his files
task.timeout = constants.ASYNC_TASK_LONG_TIMEOUT;
connect(task);
if(!skipAuth) {
authenticate(task, 'gdrive', accountId);
}
task.onRun(function() {
function recursiveDownloadContent() {
if(objects.length === 0) {
return task.chain();
}
var object = objects[0];
result.push(object);
var file;
// object may be a file
if(object.kind == "drive#file") {
file = object;
}
// object may be a change
else if(object.kind == "drive#change") {
file = object.file;
}
if(!file) {
objects.shift();
return task.chain(recursiveDownloadContent);
}
var url = file.downloadUrl;
// if file is a real time document
if(file.mimeType.indexOf("application/vnd.google-apps.drive-sdk") === 0) {
file.isRealtime = true;
url = 'https://www.googleapis.com/drive/v2/files/' + file.id + '/realtime';
}
var headers = {};
var authorizationMgr = authorizationMgrMap[accountId];
if(authorizationMgr && authorizationMgr.token) {
headers.Authorization = "Bearer " + authorizationMgr.token.access_token;
}
$.ajax({
url: url,
headers: headers,
data: {
key: constants.GOOGLE_API_KEY
},
dataType: file.isRealtime ? 'json' : 'text',
timeout: constants.AJAX_TIMEOUT
}).done(function(data) {
file.content = file.isRealtime ? data.data.value.content.value : data;
objects.shift();
task.chain(recursiveDownloadContent);
}).fail(function(jqXHR) {
var error = {
code: jqXHR.status,
message: jqXHR.statusText
};
// Handle error
handleError(error, task);
});
}
task.chain(recursiveDownloadContent);
});
task.onSuccess(function() {
callback(undefined, result);
});
task.onError(function(error) {
callback(error);
});
task.enqueue();
};
googleHelper.uploadImg = function(name, content, albumId, callback) {
var accountId = 'google.picasa0';
var result;
var task = new AsyncTask();
connect(task);
authenticate(task, 'picasa', accountId);
task.onRun(function() {
var headers = {
"Slug": name
};
if(name.match(/.jpe?g$/i)) {
headers["Content-Type"] = "image/jpeg";
}
else if(name.match(/.png$/i)) {
headers["Content-Type"] = "image/png";
}
else if(name.match(/.gif$/i)) {
headers["Content-Type"] = "image/gif";
}
var authorizationMgr = authorizationMgrMap[accountId];
if(authorizationMgr && authorizationMgr.token) {
headers.Authorization = "Bearer " + authorizationMgr.token.access_token;
}
$.ajax({
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url: constants.PICASA_IMPORT_IMG_URL + '?' + $.param({
albumId: albumId
}),
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headers: headers,
data: content,
processData: false,
dataType: "xml",
timeout: constants.AJAX_TIMEOUT,
type: "POST"
}).done(function(data) {
result = data;
task.chain();
}).fail(function(jqXHR) {
var error = {
code: jqXHR.status,
message: jqXHR.statusText
};
if(error.code == 200) {
error.message = jqXHR.responseText;
}
handleError(error, task);
});
});
task.onSuccess(function() {
callback(undefined, result);
});
task.onError(function(error) {
callback(error);
});
task.enqueue();
};
function handleError(error, task) {
var errorMsg;
if(error) {
logger.error(error);
// Try to analyze the error
if(typeof error === "string") {
errorMsg = error;
}
else {
errorMsg = "Google error (" + error.code + ": " + error.message + ").";
if(error.code >= 500 && error.code < 600) {
// Retry as described in Google's best practices
return task.retry(new Error(errorMsg));
}
else if(error.code === 401 || error.code === 403 || error.code == "token_refresh_required") {
_.each(authorizationMgrMap, function(authorizationMgr) {
authorizationMgr.setRefreshFlag();
});
errorMsg = "Access to Google account is not authorized.";
return task.retry(new Error(errorMsg), 1);
}
else if(error.code === 0 || error.code === -1) {
connected = false;
_.each(authorizationMgrMap, function(authorizationMgr) {
authorizationMgr.setRefreshFlag();
});
core.setOffline();
errorMsg = "|stopPublish";
}
}
}
task.error(new Error(errorMsg));
}
var pickerLoaded = false;
function loadPicker(task) {
task.onRun(function() {
if(pickerLoaded === true) {
return task.chain();
}
$.ajax({
url: "//www.google.com/jsapi",
data: {
key: constants.GOOGLE_API_KEY
},
dataType: "script",
timeout: constants.AJAX_TIMEOUT
}).done(function() {
google.load('picker', '1', {
callback: function() {
task.chain();
}
});
pickerLoaded = true;
}).fail(function(jqXHR) {
var error = {
code: jqXHR.status,
message: jqXHR.statusText
};
handleError(error, task);
});
});
}
googleHelper.picker = function(callback, pickerType, accountId) {
var docs = [];
var picker;
function hidePicker() {
if(picker !== undefined) {
picker.setVisible(false);
$(".modal-backdrop, .picker").remove();
}
}
var task = new AsyncTask();
// Add some time for user to choose his files
task.timeout = constants.ASYNC_TASK_LONG_TIMEOUT;
connect(task);
if(pickerType == 'doc' || pickerType == 'folder') {
authenticate(task, 'gdrive', accountId);
}
else {
accountId = 'google.picasa0';
authenticate(task, 'picasa', accountId);
}
loadPicker(task);
task.onRun(function() {
var authorizationMgr = authorizationMgrMap[accountId];
var pickerBuilder = new google.picker.PickerBuilder();
pickerBuilder.setAppId(constants.GOOGLE_DRIVE_APP_ID);
var view;
if(pickerType == 'doc') {
view = new google.picker.DocsView(google.picker.ViewId.DOCS);
view.setParent('root');
view.setIncludeFolders(true);
view.setMimeTypes([
"text/x-markdown",
"text/plain",
"application/octet-stream",
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"application/vnd.google-apps.drive-sdk." + constants.GOOGLE_DRIVE_APP_ID
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].join(","));
pickerBuilder.enableFeature(google.picker.Feature.NAV_HIDDEN);
pickerBuilder.enableFeature(google.picker.Feature.MULTISELECT_ENABLED);
pickerBuilder.addView(view);
authorizationMgr && authorizationMgr.token && pickerBuilder.setOAuthToken(authorizationMgr.token.access_token);
}
else if(pickerType == 'folder') {
view = new google.picker.DocsView(google.picker.ViewId.FOLDERS);
view.setParent('root');
view.setIncludeFolders(true);
view.setSelectFolderEnabled(true);
view.setMimeTypes('application/vnd.google-apps.folder');
pickerBuilder.enableFeature(google.picker.Feature.NAV_HIDDEN);
pickerBuilder.addView(view);
authorizationMgr && authorizationMgr.token && pickerBuilder.setOAuthToken(authorizationMgr.token.access_token);
}
else if(pickerType == 'img') {
view = new google.picker.PhotosView();
view.setType('flat');
pickerBuilder.addView(view);
view = new google.picker.PhotosView();
view.setType('ofuser');
pickerBuilder.addView(view);
pickerBuilder.addView(google.picker.ViewId.PHOTO_UPLOAD);
authorizationMgr && authorizationMgr.token && pickerBuilder.setOAuthToken(authorizationMgr.token.access_token);
}
pickerBuilder.setCallback(function(data) {
if(data.action == google.picker.Action.PICKED || data.action == google.picker.Action.CANCEL) {
if(data.action == google.picker.Action.PICKED) {
docs = data.docs;
}
hidePicker();
task.chain();
}
});
picker = pickerBuilder.build();
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$(utils.createBackdrop()).on('click.backdrop', function() {
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hidePicker();
task.chain();
});
picker.setVisible(true);
});
task.onSuccess(function() {
callback(undefined, docs);
});
task.onError(function(error) {
hidePicker();
callback(error);
});
task.enqueue();
};
googleHelper.uploadBlogger = function(blogUrl, blogId, postId, labelList, isDraft, publishDate, title, content, callback) {
var accountId = 'google.blogger0';
var task = new AsyncTask();
connect(task);
authenticate(task, 'blogger', accountId);
task.onRun(function() {
var headers = {};
var authorizationMgr = authorizationMgrMap[accountId];
if(authorizationMgr && authorizationMgr.token) {
headers.Authorization = "Bearer " + authorizationMgr.token.access_token;
}
function uploadPost() {
var url = "https://www.googleapis.com/blogger/v3/blogs/" + blogId + "/posts/";
var data = {
kind: "blogger#post",
blog: {
id: blogId
},
labels: labelList,
title: title,
content: content
};
if(publishDate) {
data.published = publishDate.toISOString();
}
var type = "POST";
// If it's an update
if(postId !== undefined) {
url += postId;
data.id = postId;
type = "PUT";
}
$.ajax({
url: url,
data: JSON.stringify(data),
headers: headers,
type: type,
contentType: "application/json",
dataType: "json",
timeout: constants.AJAX_TIMEOUT
}).done(function(post) {
postId = post.id;
task.chain(publish);
}).fail(function(jqXHR) {
var error = {
code: jqXHR.status,
message: jqXHR.statusText
};
// Handle error
if(error.code === 404 && postId !== undefined) {
error = 'Post ' + postId + ' not found on Blogger.|removePublish';
}
handleError(error, task);
});
}
function publish() {
var url = "https://www.googleapis.com/blogger/v3/blogs/" + blogId + "/posts/" + postId;
if(isDraft) {
url += "/revert";
}
else {
url += "/publish";
if(publishDate) {
url += '?publishDate=' + publishDate.toISOString();
}
}
$.ajax({
url: url,
headers: headers,
type: 'POST',
dataType: "json",
timeout: constants.AJAX_TIMEOUT
}).done(function() {
task.chain();
}).fail(function(jqXHR) {
var error = {
code: jqXHR.status,
message: jqXHR.statusText
};
// Handle error
if(error.code === 404) {
error = 'Post ' + postId + ' not found on Blogger.|removePublish';
}
handleError(error, task);
});
}
function getBlogId() {
if(blogId !== undefined) {
task.chain(uploadPost);
return;
}
$.ajax({
url: "https://www.googleapis.com/blogger/v3/blogs/byurl",
data: {
url: blogUrl
},
headers: headers,
dataType: "json",
timeout: constants.AJAX_TIMEOUT
}).done(function(blog) {
blogId = blog.id;
task.chain(uploadPost);
}).fail(function(jqXHR) {
var error = {
code: jqXHR.status,
message: jqXHR.statusText
};
// Handle error
if(error.code === 404) {
error = 'Blog "' + blogUrl + '" not found on Blogger.|removePublish';
}
handleError(error, task);
});
}
task.chain(getBlogId);
});
task.onSuccess(function() {
callback(undefined, blogId, postId);
});
task.onError(function(error) {
callback(error);
});
task.enqueue();
};
googleHelper.uploadBloggerPage = function(blogUrl, blogId, pageId, isDraft, publishDate, title, content, callback) {
var accountId = 'google.blogger0';
var task = new AsyncTask();
connect(task);
authenticate(task, 'blogger', accountId);
task.onRun(function() {
var headers = {};
var authorizationMgr = authorizationMgrMap[accountId];
if(authorizationMgr && authorizationMgr.token) {
headers.Authorization = "Bearer " + authorizationMgr.token.access_token;
}
function uploadPage() {
var url = "https://www.googleapis.com/blogger/v3/blogs/" + blogId + "/pages/";
var data = {
kind: "blogger#page",
blog: {
id: blogId
},
title: title,
content: content
};
var type = "POST";
// If it's an update
if(pageId !== undefined) {
url += pageId;
data.id = pageId;
type = "PUT";
}
$.ajax({
url: url,
data: JSON.stringify(data),
headers: headers,
type: type,
contentType: "application/json",
dataType: "json",
timeout: constants.AJAX_TIMEOUT
}).done(function(page) {
pageId = page.id;
task.chain();
}).fail(function(jqXHR) {
var error = {
code: jqXHR.status,
message: jqXHR.statusText
};
// Handle error
if(error.code === 404 && pageId !== undefined) {
error = 'Page ' + pageId + ' not found on Blogger.|removePublish';
}
handleError(error, task);
});
}
function getBlogId() {
if(blogId !== undefined) {
task.chain(uploadPage);
return;
}
$.ajax({
url: "https://www.googleapis.com/blogger/v3/blogs/byurl",
data: {
url: blogUrl
},
headers: headers,
dataType: "json",
timeout: constants.AJAX_TIMEOUT
}).done(function(blog) {
blogId = blog.id;
task.chain(uploadPage);
}).fail(function(jqXHR) {
var error = {
code: jqXHR.status,
message: jqXHR.statusText
};
// Handle error
if(error.code === 404) {
error = 'Blog "' + blogUrl + '" not found on Blogger.|removePublish';
}
handleError(error, task);
});
}
task.chain(getBlogId);
});
task.onSuccess(function() {
callback(undefined, blogId, pageId);
});
task.onError(function(error) {
callback(error);
});
task.enqueue();
};
// Use by Google's client.js
window.delayedFunction = undefined;
window.runDelayedFunction = function() {
if(window.delayedFunction !== undefined) {
window.delayedFunction();
}
};
return googleHelper;
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});