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/**
* ownCloud - News
*
* This file is licensed under the Affero General Public License version 3 or
* later. See the COPYING file.
*
* @author Bernhard Posselt <dev@bernhard-posselt.com>
* @copyright Bernhard Posselt 2014
*/
app.service('OPMLImporter', function (FeedResource, FolderResource, Publisher,
$q) {
'use strict';
var startFeedJob = function (queue) {
var deferred = $q.defer();
if (queue.length > 0) {
var feed = queue.pop();
var url = feed.url;
var title = feed.title;
var folderId = 0;
var folderName = feed.folderName;
if (folderName !== undefined &&
FolderResource.get(folderName) !== undefined) {
var folder = FolderResource.get(folderName);
folder.opened = true;
folderId = folder.id;
// display folder while adding the feed
folder.getsFeed = true;
folder.getsFeedCounter = folder.getsFeedCounter || 0;
folder.getsFeedCounter += 1;
}
// make sure to not add already existing feeds
if (url !== undefined && FeedResource.get(url) === undefined) {
FeedResource.create(url, folderId, title)
.then(function (data) {
Publisher.publishAll(data);
})
.finally(function () {
if (folderId !== 0) {
folder.getsFeedCounter -= 1;
if (folder.getsFeedCounter === 0) {
folder.getsFeed = false;
}
}
startFeedJob(queue);
});
}
} else {
deferred.resolve();
}
return deferred.promise;
};
this.importFolders = function (content) {
// assumption: folders are fast to create and we dont need a queue for
// them
var feedQueue = [];
var folderPromises = [];
content.folders.forEach(function (folder) {
if (folder.name !== undefined) {
// skip already created folders
if (FolderResource.get(folder.name) === undefined) {
var promise = FolderResource.create(folder.name)
.then(function (data) {
Publisher.publishAll(data);
});
folderPromises.push(promise);
}
folder.feeds.forEach(function (feed) {
feed.folderName = folder.name;
feedQueue.push(feed);
});
}
});
feedQueue = feedQueue.concat(content.feeds);
var deferred = $q.defer();
$q.all(folderPromises).finally(function () {
deferred.resolve(feedQueue);
});
return deferred.promise;
};
this.importFeedQueue = function (feedQueue, jobSize) {
// queue feeds to prevent server slowdown
var deferred = $q.defer();
var jobPromises = [];
for (var i=0; i<jobSize; i+=1) {
jobPromises.push(startFeedJob(feedQueue));
}
$q.all(jobPromises).then(function () {
deferred.resolve();
});
return deferred.promise;
};
});
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