Add podcasts support WIP

src/podcasts/podcastdownloader.h

@@ -0,0 +1,129 @@
+/*
+ * Strawberry Music Player
+ * This file was part of Clementine.
+ * Copyright 2012, David Sansome <me@davidsansome.com>
+ * Copyright 2014, John Maguire <john.maguire@gmail.com>
+ * Copyright 2014, Krzysztof Sobiecki <sobkas@gmail.com>
+ * Copyright 2019-2021, Jonas Kvinge <jonas@jkvinge.net>
+ *
+ * Strawberry is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Strawberry is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Strawberry.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef PODCASTDOWNLOADER_H
+#define PODCASTDOWNLOADER_H
+
+#include <memory>
+
+#include <QObject>
+#include <QFile>
+#include <QSet>
+#include <QList>
+#include <QQueue>
+#include <QString>
+#include <QRegularExpression>
+#include <QNetworkRequest>
+
+#include "core/networkaccessmanager.h"
+#include "podcast.h"
+#include "podcastepisode.h"
+
+class Application;
+class PodcastBackend;
+
+class NetworkAccessManager;
+class QNetworkReply;
+
+namespace PodcastDownload {
+enum State {
+  NotDownloading,
+  Queued,
+  Downloading,
+  Finished
+};
+}
+
+class Task : public QObject {
+  Q_OBJECT
+
+ public:
+  Task(const PodcastEpisode &episode, QFile *file, PodcastBackend *backend);
+  PodcastEpisode episode() const;
+
+ signals:
+  void ProgressChanged(const PodcastEpisode &episode, const PodcastDownload::State state, const int percent);
+  void finished(Task *task);
+
+ public slots:
+  void finishedPublic();
+
+ private slots:
+  void reading();
+  void downloadProgressInternal(qint64 received, qint64 total);
+  void finishedInternal();
+
+ private:
+  std::unique_ptr<QFile> file_;
+  PodcastEpisode episode_;
+  PodcastBackend *backend_;
+  std::unique_ptr<NetworkAccessManager> network_;
+  QNetworkRequest req_;
+  QNetworkReply *reply_;
+};
+
+class PodcastDownloader : public QObject {
+  Q_OBJECT
+
+ public:
+  explicit PodcastDownloader(Application *app, QObject *parent = nullptr);
+
+  PodcastEpisodeList EpisodesDownloading(const PodcastEpisodeList &episodes);
+  QString DefaultDownloadDir() const;
+
+ public slots:
+  // Adds the episode to the download queue
+  void DownloadEpisode(const PodcastEpisode &episode);
+  void cancelDownload(const PodcastEpisodeList &episodes);
+
+ signals:
+  void ProgressChanged(const PodcastEpisode &episode, const PodcastDownload::State state, const int percent);
+
+ private slots:
+  void ReloadSettings();
+
+  void SubscriptionAdded(const Podcast &podcast);
+  void EpisodesAdded(const PodcastEpisodeList &episodes);
+
+  void ReplyFinished(Task *task);
+
+ private:
+  QString FilenameForEpisode(const QString &directory, const PodcastEpisode &episode) const;
+  QString SanitiseFilenameComponent(const QString &text) const;
+
+ private:
+  static const char *kSettingsGroup;
+
+  Application *app_;
+  PodcastBackend *backend_;
+  NetworkAccessManager *network_;
+
+  QRegularExpression disallowed_filename_characters_;
+
+  bool auto_download_;
+  QString download_dir_;
+
+  QList<Task*> list_tasks_;
+};
+
+#endif  // PODCASTDOWNLOADER_H