Stackedit/public/res/helpers/googleHelper.js

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/*global gapi, google */
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define([
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"underscore",
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"jquery",
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"constants",
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"core",
"utils",
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"storage",
"logger",
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"settings",
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"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 authorizationMgr = {};
(function() {
var permissionList = {};
var isAuthorized = false;
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_.each((storage.gdrivePermissions || '').split(';'), function(permission) {
permission && (permissionList[permission] = true);
});
authorizationMgr.reset = function() {
isAuthorized = false;
};
authorizationMgr.isAuthorized = function(permission) {
return isAuthorized && _.has(permissionList, permission);
};
authorizationMgr.add = function(permission) {
permissionList[permission] = true;
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storage.gdrivePermissions = _.keys(permissionList).join(';');
isAuthorized = true;
};
authorizationMgr.getListWithNew = function(permission) {
var result = _.keys(permissionList);
if(!_.has(permissionList, permission)) {
result.push(permission);
}
return result;
};
})();
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var googleHelper = {};
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// Listen to offline status changes
var isOffline = false;
eventMgr.addListener("onOfflineChanged", function(isOfflineParam) {
isOffline = isOfflineParam;
});
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// Try to connect Gdrive by downloading client.js
function connect(task) {
task.onRun(function() {
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if(isOffline === true) {
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connected = false;
task.error(new Error("Operation not available in offline mode.|stopPublish"));
return;
}
if(connected === true) {
task.chain();
return;
}
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window.delayedFunction = function() {
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gapi.load("client,drive-realtime", function() {
connected = true;
task.chain();
});
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};
$.ajax({
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url: "https://apis.google.com/js/api.js?onload=runDelayedFunction",
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dataType: "script",
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timeout: constants.AJAX_TIMEOUT
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}).fail(function(jqXHR) {
var error = {
code: jqXHR.status,
message: jqXHR.statusText
};
handleError(error, task);
});
});
}
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// Try to authenticate with Oauth
var scopeMap = {
gdrive: [
'https://www.googleapis.com/auth/drive.install',
settings.gdriveFullAccess === true ? 'https://www.googleapis.com/auth/drive' : 'https://www.googleapis.com/auth/drive.file'
],
blogger: [
'https://www.googleapis.com/auth/blogger'
],
picasa: [
'https://picasaweb.google.com/data/'
]
};
function authenticate(task, permission, force) {
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task.onRun(function() {
if(!force && authorizationMgr.isAuthorized(permission)) {
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task.chain();
return;
}
var immediate = true;
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function oauthRedirect() {
core.redirectConfirm('You are being redirected to <strong>Google</strong> authorization page.', function() {
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task.chain(localAuthenticate);
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}, function() {
task.error(new Error('Operation canceled.'));
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});
}
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function localAuthenticate() {
if(immediate === false) {
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task.timeout = constants.ASYNC_TASK_LONG_TIMEOUT;
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}
var scopeList = _.chain(scopeMap).pick(authorizationMgr.getListWithNew(permission)).flatten().value();
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gapi.auth.authorize({
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'client_id': constants.GOOGLE_CLIENT_ID,
'scope': scopeList,
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'immediate': immediate
}, function(authResult) {
gapi.client.load('drive', 'v2', function() {
if(!authResult || authResult.error) {
// If immediate did not work retry without immediate
// flag
if(connected === true && immediate === true) {
immediate = false;
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task.chain(oauthRedirect);
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return;
}
// Error
task.error(new Error("Access to Google account is not authorized."));
return;
}
// Success
authorizationMgr.add(permission);
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task.chain();
});
});
}
task.chain(localAuthenticate);
});
}
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googleHelper.forceGdriveAuthenticate = function() {
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var task = new AsyncTask();
connect(task);
authenticate(task, 'gdrive', true);
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task.enqueue();
};
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googleHelper.upload = function(fileId, parentId, title, content, contentType, etag, 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, 'gdrive');
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task.onRun(function() {
var boundary = '-------314159265358979323846';
var delimiter = "\r\n--" + boundary + "\r\n";
var close_delim = "\r\n--" + boundary + "--";
contentType = contentType || 'text/x-markdown';
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var metadata = {
title: title,
mimeType: contentType
};
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if(parentId) {
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// Specify the directory
metadata.parents = [
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{
kind: 'drive#fileLink',
id: parentId
}
];
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}
var path = '/upload/drive/v2/files';
var method = 'POST';
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if(fileId) {
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// If it's an update
path += "/" + fileId;
method = 'PUT';
}
var headers = {
'Content-Type': 'multipart/mixed; boundary="' + boundary + '"',
};
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// Sometimes we have error 412 from Google even with the correct
// etag
// if(etag !== undefined) {
// headers["If-Match"] = etag;
// }
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var base64Data = utils.encodeBase64(content);
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var multipartRequestBody = [
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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("");
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var request = gapi.client.request({
'path': path,
'method': method,
'params': {
'uploadType': 'multipart',
},
'headers': headers,
'body': multipartRequestBody,
});
request.execute(function(response) {
if(response && response.id) {
// Upload success
result = response;
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result.content = content;
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task.chain();
return;
}
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
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storage.removeItem("gdrive.lastChangeId");
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error = 'Conflict on file ID "' + fileId + '". Please restart the synchronization.';
}
}
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handleError(error, task);
});
});
task.onSuccess(function() {
callback(undefined, result);
});
task.onError(function(error) {
callback(error);
});
task.enqueue();
};
googleHelper.rename = function(fileId, title, callback) {
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var result;
var task = new AsyncTask();
connect(task);
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authenticate(task, 'gdrive');
task.onRun(function() {
var body = {'title': title};
var request = gapi.client.drive.files.patch({
'fileId': fileId,
'resource': body
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});
request.execute(function(response) {
if(response && response.id) {
// Rename success
result = response;
task.chain();
return;
}
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);
});
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task.onError(function(error) {
callback(error);
});
task.enqueue();
};
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googleHelper.createRealtimeFile = function(parentId, title, callback) {
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var result;
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var task = new AsyncTask();
connect(task);
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authenticate(task, 'gdrive');
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task.onRun(function() {
var metadata = {
title: title,
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mimeType: 'application/vnd.google-apps.drive-sdk',
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};
if(parentId !== undefined) {
// Specify the directory
metadata.parents = [
{
kind: 'drive#fileLink',
id: parentId
}
];
}
var request = gapi.client.drive.files.insert({
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'resource': metadata
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});
request.execute(function(response) {
if(response && response.id) {
// Upload success
result = response;
task.chain();
return;
}
handleError(response.error, task);
});
});
task.onSuccess(function() {
callback(undefined, result);
});
task.onError(function(error) {
callback(error);
});
task.enqueue();
};
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googleHelper.uploadImg = function(name, content, albumId, callback) {
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var result;
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var task = new AsyncTask();
connect(task);
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authenticate(task, 'picasa');
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task.onRun(function() {
var headers = {
"Slug": name
};
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if(name.match(/.jpe?g$/i)) {
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headers["Content-Type"] = "image/jpeg";
}
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else if(name.match(/.png$/i)) {
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headers["Content-Type"] = "image/png";
}
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else if(name.match(/.gif$/i)) {
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headers["Content-Type"] = "image/gif";
}
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var token = gapi.auth.getToken();
if(token) {
headers.Authorization = "Bearer " + token.access_token;
}
$.ajax({
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url: constants.PICASA_PROXY_URL + "upload/" + albumId,
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headers: headers,
data: content,
processData: false,
dataType: "xml",
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timeout: constants.AJAX_TIMEOUT,
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type: "POST"
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}).done(function(data) {
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result = data;
task.chain();
}).fail(function(jqXHR) {
var error = {
code: jqXHR.status,
message: jqXHR.statusText
};
if(error.code == 200) {
error.message = jqXHR.responseText;
}
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handleError(error, task);
});
});
task.onSuccess(function() {
callback(undefined, result);
});
task.onError(function(error) {
callback(error);
});
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task.enqueue();
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};
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googleHelper.checkChanges = function(lastChangeId, callback) {
var changes = [];
var newChangeId = lastChangeId || 0;
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var task = new AsyncTask();
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connect(task);
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authenticate(task, 'gdrive');
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task.onRun(function() {
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var nextPageToken;
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function retrievePageOfChanges() {
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var request;
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if(nextPageToken === undefined) {
request = gapi.client.drive.changes.list({
'startChangeId': newChangeId + 1
});
}
else {
request = gapi.client.drive.changes.list({
'pageToken': nextPageToken
});
}
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request.execute(function(response) {
if(!response || !response.largestChangeId) {
// Handle error
handleError(response.error, task);
return;
}
// 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);
});
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task.enqueue();
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};
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googleHelper.downloadMetadata = function(ids, callback, skipAuth) {
var result = [];
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var task = new AsyncTask();
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connect(task);
if(!skipAuth) {
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authenticate(task, 'gdrive');
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}
task.onRun(function() {
function recursiveDownloadMetadata() {
if(ids.length === 0) {
task.chain();
return;
}
var id = ids[0];
var headers = {};
var token = gapi.auth.getToken();
if(token) {
headers.Authorization = "Bearer " + token.access_token;
}
$.ajax({
url: "https://www.googleapis.com/drive/v2/files/" + id,
headers: headers,
data: {
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key: constants.GOOGLE_API_KEY
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},
dataType: "json",
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timeout: constants.AJAX_TIMEOUT
}).done(function(data) {
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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);
});
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task.enqueue();
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};
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googleHelper.downloadContent = function(objects, callback, skipAuth) {
var result = [];
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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);
if(!skipAuth) {
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authenticate(task, 'gdrive');
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}
task.onRun(function() {
function recursiveDownloadContent() {
if(objects.length === 0) {
task.chain();
return;
}
var object = objects[0];
result.push(object);
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var file;
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// 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();
task.chain(recursiveDownloadContent);
return;
}
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// if file is a real time document
if(file.mimeType.indexOf("application/vnd.google-apps.drive-sdk") === 0) {
file.content = "";
file.isRealtime = true;
objects.shift();
task.chain(recursiveDownloadContent);
return;
}
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var headers = {};
var token = gapi.auth.getToken();
if(token) {
headers.Authorization = "Bearer " + token.access_token;
}
$.ajax({
url: file.downloadUrl,
headers: headers,
data: {
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key: constants.GOOGLE_API_KEY
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},
dataType: "text",
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timeout: constants.AJAX_TIMEOUT
}).done(function(data) {
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file.content = 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);
});
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task.enqueue();
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};
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googleHelper.loadRealtime = function(fileId, content, callback, errorCallback) {
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var doc;
var task = new AsyncTask();
connect(task);
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authenticate(task, 'gdrive');
task.onRun(function() {
gapi.drive.realtime.load(fileId, function(result) {
// onFileLoaded
doc = result;
task.chain();
}, function(model) {
// initializeModel
var string = model.createString(content);
model.getRoot().set('content', string);
}, function(err) {
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errorCallback(err);
task.error(new Error(err.message));
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});
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});
task.onSuccess(function() {
callback(undefined, doc);
});
task.onError(function(error) {
callback(error);
});
task.enqueue();
};
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function handleError(error, task) {
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var errorMsg;
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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
task.retry(new Error(errorMsg));
return;
}
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else if(error.code === 401 || error.code === 403 || error.code == "token_refresh_required") {
authorizationMgr.reset();
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errorMsg = "Access to Google account is not authorized.";
task.retry(new Error(errorMsg), 1);
return;
}
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else if(error.code === 0 || error.code === -1) {
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connected = false;
authorizationMgr.reset();
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core.setOffline();
errorMsg = "|stopPublish";
}
}
}
task.error(new Error(errorMsg));
}
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var pickerLoaded = false;
function loadPicker(task) {
task.onRun(function() {
if(pickerLoaded === true) {
task.chain();
return;
}
$.ajax({
url: "//www.google.com/jsapi",
data: {
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key: constants.GOOGLE_API_KEY
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},
dataType: "script",
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timeout: constants.AJAX_TIMEOUT
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}).done(function() {
google.load('picker', '1', {
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callback: function() {
task.chain();
}
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});
pickerLoaded = true;
}).fail(function(jqXHR) {
var error = {
code: jqXHR.status,
message: jqXHR.statusText
};
handleError(error, task);
});
});
}
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googleHelper.picker = function(callback, pickerType) {
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var docs = [];
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var picker;
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function hidePicker() {
if(picker !== undefined) {
picker.setVisible(false);
$(".modal-backdrop, .picker").remove();
}
}
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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);
loadPicker(task);
task.onRun(function() {
var pickerBuilder = new google.picker.PickerBuilder();
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pickerBuilder.setAppId(constants.GOOGLE_DRIVE_APP_ID);
var view;
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if(pickerType == 'doc') {
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view = new google.picker.DocsView(google.picker.ViewId.DOCS);
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view.setIncludeFolders(true);
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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(","));
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pickerBuilder.enableFeature(google.picker.Feature.NAV_HIDDEN);
pickerBuilder.enableFeature(google.picker.Feature.MULTISELECT_ENABLED);
pickerBuilder.addView(view);
}
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else if(pickerType == 'folder') {
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view = new google.picker.DocsView(google.picker.ViewId.FOLDERS);
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view.setIncludeFolders(true);
view.setSelectFolderEnabled(true);
view.setMimeTypes('application/vnd.google-apps.folder');
pickerBuilder.enableFeature(google.picker.Feature.NAV_HIDDEN);
pickerBuilder.addView(view);
}
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);
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pickerBuilder.addView(google.picker.ViewId.PHOTO_UPLOAD);
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}
pickerBuilder.setCallback(function(data) {
if(data.action == google.picker.Action.PICKED || data.action == google.picker.Action.CANCEL) {
if(data.action == google.picker.Action.PICKED) {
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docs = data.docs;
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}
hidePicker();
task.chain();
}
});
picker = pickerBuilder.build();
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$(utils.createBackdrop()).click(function() {
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hidePicker();
task.chain();
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});
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picker.setVisible(true);
});
task.onSuccess(function() {
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callback(undefined, docs);
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});
task.onError(function(error) {
hidePicker();
callback(error);
});
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task.enqueue();
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};
googleHelper.uploadBlogger = function(blogUrl, blogId, postId, labelList, isDraft, publishDate, title, content, callback) {
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var task = new AsyncTask();
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connect(task);
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authenticate(task, 'blogger');
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task.onRun(function() {
var headers = {};
var token = gapi.auth.getToken();
if(token) {
headers.Authorization = "Bearer " + token.access_token;
}
function uploadPost() {
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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
};
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",
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timeout: constants.AJAX_TIMEOUT
}).done(function(post) {
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postId = post.id;
task.chain(publish);
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}).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
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}).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);
});
}
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function getBlogId() {
if(blogId !== undefined) {
task.chain(uploadPost);
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return;
}
$.ajax({
url: "https://www.googleapis.com/blogger/v3/blogs/byurl",
data: {
url: blogUrl
},
headers: headers,
dataType: "json",
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timeout: constants.AJAX_TIMEOUT
}).done(function(blog) {
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blogId = blog.id;
task.chain(uploadPost);
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}).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);
});
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task.enqueue();
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};
return googleHelper;
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});