Add Subsonic support (#180)

src/subsonic/subsonicbaserequest.h

@@ -0,0 +1,86 @@
+/*
+ * Strawberry Music Player
+ * Copyright 2019, 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 SUBSONICBASEREQUEST_H
+#define SUBSONICBASEREQUEST_H
+
+#include "config.h"
+
+#include <QtGlobal>
+#include <QObject>
+#include <QList>
+#include <QPair>
+#include <QString>
+#include <QUrl>
+#include <QNetworkReply>
+#include <QJsonObject>
+#include <QJsonArray>
+#include <QJsonValue>
+
+#include "core/song.h"
+#include "internet/internetservices.h"
+#include "internet/internetservice.h"
+#include "internet/internetsearch.h"
+#include "subsonicservice.h"
+
+class Application;
+class NetworkAccessManager;
+class SubsonicUrlHandler;
+class CollectionBackend;
+class CollectionModel;
+
+class SubsonicBaseRequest : public QObject {
+  Q_OBJECT
+
+ public:
+
+  SubsonicBaseRequest(SubsonicService *service, NetworkAccessManager *network, QObject *parent);
+  ~SubsonicBaseRequest();
+
+  typedef QPair<QString, QString> Param;
+  typedef QList<Param> ParamList;
+
+  typedef QPair<QByteArray, QByteArray> EncodedParam;
+  typedef QList<EncodedParam> EncodedParamList;
+
+  QUrl CreateUrl(const QString &ressource_name, const QList<Param> &params_provided);
+  QNetworkReply *CreateGetRequest(const QString &ressource_name, const QList<Param> &params_provided);
+  QByteArray GetReplyData(QNetworkReply *reply, QString &error);
+  QJsonObject ExtractJsonObj(QByteArray &data, QString &error);
+
+  virtual QString Error(QString error, QVariant debug = QVariant());
+
+  QString client_name() { return service_->client_name(); }
+  QString api_version() { return service_->api_version(); }
+  QString hostname() { return service_->hostname(); }
+  int port() { return service_->port(); }
+  QString username() { return service_->username(); }
+  QString password() { return service_->password(); }
+  bool verify_certificate() { return service_->verify_certificate(); }
+  bool cache_album_covers() { return service_->cache_album_covers(); }
+
+ private:
+
+  SubsonicService *service_;
+  NetworkAccessManager *network_;
+  QList<QNetworkReply*> replies_;
+
+};
+
+#endif  // SUBSONICBASEREQUEST_H