395 lines
12 KiB
C++
395 lines
12 KiB
C++
/* This file is part of Clementine.
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Copyright 2012, David Sansome <me@davidsansome.com>
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Clementine is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Clementine is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Clementine. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "gpoddersync.h"
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#include "podcastbackend.h"
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#include "podcasturlloader.h"
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#include "core/application.h"
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#include "core/closure.h"
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#include "core/logging.h"
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#include "core/network.h"
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#include "core/qhash_qurl.h"
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#include "core/timeconstants.h"
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#include "core/utilities.h"
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#include <ApiRequest.h>
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#include <QCoreApplication>
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#include <QHostInfo>
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#include <QNetworkAccessManager>
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#include <QSettings>
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#include <QTimer>
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const char* GPodderSync::kSettingsGroup = "Podcasts";
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const int GPodderSync::kFlushUpdateQueueDelay = 30 * kMsecPerSec; // 30 seconds
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const int GPodderSync::kGetUpdatesInterval = 30*60 * kMsecPerSec; // 30 minutes
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GPodderSync::GPodderSync(Application* app, QObject* parent)
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: QObject(parent),
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app_(app),
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network_(new NetworkAccessManager(this)),
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backend_(app_->podcast_backend()),
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loader_(new PodcastUrlLoader(this)),
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get_updates_timer_(new QTimer(this)),
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flush_queue_timer_(new QTimer(this)),
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flushing_queue_(false)
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{
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ReloadSettings();
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LoadQueue();
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connect(app_, SIGNAL(SettingsChanged()), SLOT(ReloadSettings()));
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connect(backend_, SIGNAL(SubscriptionAdded(Podcast)), SLOT(SubscriptionAdded(Podcast)));
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connect(backend_, SIGNAL(SubscriptionRemoved(Podcast)), SLOT(SubscriptionRemoved(Podcast)));
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get_updates_timer_->setInterval(kGetUpdatesInterval);
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connect(get_updates_timer_, SIGNAL(timeout()), SLOT(GetUpdatesNow()));
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flush_queue_timer_->setInterval(kFlushUpdateQueueDelay);
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flush_queue_timer_->setSingleShot(true);
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connect(flush_queue_timer_, SIGNAL(timeout()), SLOT(FlushUpdateQueue()));
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if (is_logged_in()) {
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GetUpdatesNow();
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flush_queue_timer_->start();
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get_updates_timer_->start();
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}
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}
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GPodderSync::~GPodderSync() {
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}
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QString GPodderSync::DeviceId() {
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return QString("%1-%2").arg(qApp->applicationName(),
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QHostInfo::localHostName()).toLower();
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}
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QString GPodderSync::DefaultDeviceName() {
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return tr("%1 on %2").arg(qApp->applicationName(),
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QHostInfo::localHostName());
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}
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bool GPodderSync::is_logged_in() const {
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return !username_.isEmpty() && !password_.isEmpty() && api_;
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}
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void GPodderSync::ReloadSettings() {
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QSettings s;
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s.beginGroup(kSettingsGroup);
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username_ = s.value("gpodder_username").toString();
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password_ = s.value("gpodder_password").toString();
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last_successful_get_ = s.value("gpodder_last_get").toDateTime();
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if (!username_.isEmpty() && !password_.isEmpty()) {
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api_.reset(new mygpo::ApiRequest(username_, password_, network_));
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}
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}
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QNetworkReply* GPodderSync::Login(const QString& username, const QString& password,
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const QString& device_name) {
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api_.reset(new mygpo::ApiRequest(username, password, network_));
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QNetworkReply* reply = api_->renameDevice(
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username, DeviceId(), device_name,
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Utilities::IsLaptop() ? mygpo::Device::LAPTOP
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: mygpo::Device::DESKTOP);
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NewClosure(reply, SIGNAL(finished()),
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this, SLOT(LoginFinished(QNetworkReply*,QString,QString)),
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reply, username, password);
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return reply;
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}
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void GPodderSync::LoginFinished(QNetworkReply* reply,
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const QString& username, const QString& password) {
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reply->deleteLater();
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if (reply->error() == QNetworkReply::NoError) {
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username_ = username;
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password_ = password;
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QSettings s;
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s.beginGroup(kSettingsGroup);
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s.setValue("gpodder_username", username);
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s.setValue("gpodder_password", password);
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DoInitialSync();
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} else {
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api_.reset();
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}
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}
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void GPodderSync::Logout() {
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QSettings s;
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s.beginGroup(kSettingsGroup);
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s.remove("gpodder_username");
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s.remove("gpodder_password");
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s.remove("gpodder_last_get");
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api_.reset();
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}
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void GPodderSync::GetUpdatesNow() {
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if (!is_logged_in())
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return;
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qlonglong timestamp = 0;
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if (last_successful_get_.isValid()) {
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timestamp = last_successful_get_.toTime_t();
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}
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mygpo::DeviceUpdates* reply = api_->deviceUpdates(username_, DeviceId(), timestamp);
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NewClosure(reply, SIGNAL(finished()),
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this, SLOT(DeviceUpdatesFinished(mygpo::DeviceUpdates*)),
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reply);
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NewClosure(reply, SIGNAL(parseError()),
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this, SLOT(DeviceUpdatesFailed(mygpo::DeviceUpdates*)),
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reply);
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NewClosure(reply, SIGNAL(requestError(QNetworkReply::NetworkError)),
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this, SLOT(DeviceUpdatesFailed(mygpo::DeviceUpdates*)),
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reply);
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}
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void GPodderSync::DeviceUpdatesFailed(mygpo::DeviceUpdates* reply) {
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reply->deleteLater();
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qLog(Warning) << "Failed to get gpodder.net device updates";
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}
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void GPodderSync::DeviceUpdatesFinished(mygpo::DeviceUpdates* reply) {
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reply->deleteLater();
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// Remember episode actions for each podcast, so when we add a new podcast
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// we can apply the actions immediately.
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QMap<QUrl, QList<mygpo::EpisodePtr> > episodes_by_podcast;
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foreach (mygpo::EpisodePtr episode, reply->updateList()) {
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episodes_by_podcast[episode->podcastUrl()].append(episode);
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}
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foreach (mygpo::PodcastPtr podcast, reply->addList()) {
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const QUrl url(podcast->url());
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// Are we subscribed to this podcast already?
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Podcast existing_podcast = backend_->GetSubscriptionByUrl(url);
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if (existing_podcast.is_valid()) {
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// Just apply actions to this existing podcast
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ApplyActions(episodes_by_podcast[url], existing_podcast.mutable_episodes());
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backend_->UpdateEpisodes(existing_podcast.episodes());
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continue;
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}
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// Start loading the podcast. Remember actions and apply them after we
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// have a list of the episodes.
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PodcastUrlLoaderReply* loader_reply = loader_->Load(url);
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NewClosure(loader_reply, SIGNAL(Finished(bool)),
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this, SLOT(NewPodcastLoaded(PodcastUrlLoaderReply*,QUrl,QList<QSharedPointer<mygpo::Episode> >)),
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loader_reply, url, episodes_by_podcast[url]);
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}
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// Unsubscribe from podcasts that were removed.
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foreach (const QUrl& url, reply->removeList()) {
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backend_->Unsubscribe(backend_->GetSubscriptionByUrl(url));
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}
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last_successful_get_ = QDateTime::currentDateTime();
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QSettings s;
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s.beginGroup(kSettingsGroup);
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s.setValue("gpodder_last_get", last_successful_get_);
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}
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void GPodderSync::NewPodcastLoaded(PodcastUrlLoaderReply* reply, const QUrl& url,
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const QList<mygpo::EpisodePtr>& actions) {
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reply->deleteLater();
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if (!reply->is_success()) {
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qLog(Warning) << "Error fetching podcast at" << url << ":"
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<< reply->error_text();
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return;
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}
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if (reply->result_type() != PodcastUrlLoaderReply::Type_Podcast) {
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qLog(Warning) << "The URL" << url << "no longer contains a podcast";
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return;
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}
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// Apply the actions to the episodes in the podcast.
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foreach (Podcast podcast, reply->podcast_results()) {
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ApplyActions(actions, podcast.mutable_episodes());
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// Add the subscription
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backend_->Subscribe(&podcast);
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}
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}
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void GPodderSync::ApplyActions(const QList<QSharedPointer<mygpo::Episode> >& actions,
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PodcastEpisodeList* episodes) {
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for (PodcastEpisodeList::iterator it = episodes->begin() ;
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it != episodes->end() ; ++it) {
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// Find an action for this episode
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foreach (mygpo::EpisodePtr action, actions) {
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if (action->url() != it->url())
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continue;
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switch (action->status()) {
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case mygpo::Episode::PLAY:
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case mygpo::Episode::DOWNLOAD:
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it->set_listened(true);
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break;
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default:
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break;
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}
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break;
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}
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}
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}
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void GPodderSync::SubscriptionAdded(const Podcast& podcast) {
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if (!is_logged_in())
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return;
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const QUrl& url = podcast.url();
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queued_remove_subscriptions_.remove(url);
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queued_add_subscriptions_.insert(url);
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SaveQueue();
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flush_queue_timer_->start();
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}
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void GPodderSync::SubscriptionRemoved(const Podcast& podcast) {
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if (!is_logged_in())
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return;
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const QUrl& url = podcast.url();
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queued_remove_subscriptions_.insert(url);
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queued_add_subscriptions_.remove(url);
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SaveQueue();
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flush_queue_timer_->start();
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}
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namespace {
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template <typename T>
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void WriteContainer(const T& container, QSettings* s, const char* array_name,
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const char* item_name) {
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s->beginWriteArray(array_name, container.count());
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int index = 0;
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foreach (const typename T::value_type& item, container) {
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s->setArrayIndex(index ++);
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s->setValue(item_name, item);
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}
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s->endArray();
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}
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template <typename T>
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void ReadContainer(T* container, QSettings* s, const char* array_name,
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const char* item_name) {
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container->clear();
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const int count = s->beginReadArray(array_name);
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for (int i=0 ; i<count ; ++i) {
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s->setArrayIndex(i);
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*container << s->value(item_name).value<typename T::value_type>();
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}
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s->endArray();
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}
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}
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void GPodderSync::SaveQueue() {
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QSettings s;
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s.beginGroup(kSettingsGroup);
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WriteContainer(queued_add_subscriptions_, &s, "gpodder_queued_add_subscriptions", "url");
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WriteContainer(queued_remove_subscriptions_, &s, "gpodder_queued_remove_subscriptions", "url");
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}
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void GPodderSync::LoadQueue() {
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QSettings s;
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s.beginGroup(kSettingsGroup);
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ReadContainer(&queued_add_subscriptions_, &s, "gpodder_queued_add_subscriptions", "url");
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ReadContainer(&queued_remove_subscriptions_, &s, "gpodder_queued_remove_subscriptions", "url");
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}
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void GPodderSync::FlushUpdateQueue() {
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if (!is_logged_in() || flushing_queue_)
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return;
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QSet<QUrl> all_urls = queued_add_subscriptions_ + queued_remove_subscriptions_;
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if (all_urls.isEmpty())
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return;
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flushing_queue_ = true;
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mygpo::AddRemoveResult* reply =
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api_->addRemoveSubscriptions(username_, DeviceId(),
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queued_add_subscriptions_.toList(),
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queued_remove_subscriptions_.toList());
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qLog(Info) << "Sending" << all_urls.count() << "changes to gpodder.net";
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NewClosure(reply, SIGNAL(finished()),
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this, SLOT(AddRemoveFinished(mygpo::AddRemoveResult*,QList<QUrl>)),
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reply, all_urls.toList());
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NewClosure(reply, SIGNAL(parseError()),
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this, SLOT(AddRemoveFailed(mygpo::AddRemoveResult*)),
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reply);
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NewClosure(reply, SIGNAL(requestError(QNetworkReply::NetworkError)),
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this, SLOT(AddRemoveFailed(mygpo::AddRemoveResult*)),
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reply);
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}
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void GPodderSync::AddRemoveFailed(mygpo::AddRemoveResult* reply) {
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flushing_queue_ = false;
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reply->deleteLater();
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qLog(Warning) << "Failed to update gpodder.net subscriptions";
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}
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void GPodderSync::AddRemoveFinished(mygpo::AddRemoveResult* reply,
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const QList<QUrl>& affected_urls) {
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flushing_queue_ = false;
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reply->deleteLater();
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// Remove the URLs from the queue.
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foreach (const QUrl& url, affected_urls) {
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queued_add_subscriptions_.remove(url);
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queued_remove_subscriptions_.remove(url);
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}
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SaveQueue();
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// Did more change in the mean time?
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if (!queued_add_subscriptions_.isEmpty() || !queued_remove_subscriptions_.isEmpty()) {
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flush_queue_timer_->start();
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}
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}
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void GPodderSync::DoInitialSync() {
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// Get updates from the server
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GetUpdatesNow();
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get_updates_timer_->start();
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// Send our complete list of subscriptions
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queued_remove_subscriptions_.clear();
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queued_add_subscriptions_.clear();
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foreach (const Podcast& podcast, backend_->GetAllSubscriptions()) {
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queued_add_subscriptions_.insert(podcast.url());
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}
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SaveQueue();
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FlushUpdateQueue();
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}
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