Add base classes for HTTP and Json

src/core/httpbaserequest.h

@@ -0,0 +1,110 @@
+/*
+ * Strawberry Music Player
+ * Copyright 2025, 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 HTTPBASEREQUEST_H
+#define HTTPBASEREQUEST_H
+
+#include <QObject>
+#include <QList>
+#include <QVariant>
+#include <QByteArray>
+#include <QString>
+#include <QUrl>
+#include <QUrlQuery>
+#include <QNetworkReply>
+#include <QSslError>
+#include <QJsonDocument>
+#include <QJsonObject>
+
+#include "includes/shared_ptr.h"
+
+class NetworkAccessManager;
+
+class HttpBaseRequest : public QObject {
+  Q_OBJECT
+
+ public:
+  explicit HttpBaseRequest(const SharedPtr<NetworkAccessManager> network, QObject *parent = nullptr);
+  ~HttpBaseRequest() override;
+
+  using Param = QPair<QString, QString>;
+  using ParamList = QList<Param>;
+
+  enum class ErrorCode {
+    Success,
+    NetworkError,
+    HttpError,
+    APIError,
+    ParseError,
+  };
+
+  class HttpBaseRequestResult {
+   public:
+    HttpBaseRequestResult(const ErrorCode _error_code, const QString &_error_message = QString())
+        : error_code(_error_code),
+          network_error(QNetworkReply::NetworkError::UnknownNetworkError),
+          http_status_code(200),
+          api_error(-1),
+          error_message(_error_message) {}
+    ErrorCode error_code;
+    QNetworkReply::NetworkError network_error;
+    int http_status_code;
+    int api_error;
+    QString error_message;
+    bool success() const { return error_code == ErrorCode::Success; }
+  };
+
+  class ReplyDataResult : public HttpBaseRequestResult {
+   public:
+    ReplyDataResult(const ErrorCode _error_code, const QString &_error_message = QString()) : HttpBaseRequestResult(_error_code, _error_message) {}
+    ReplyDataResult(const QByteArray &_data) : HttpBaseRequestResult(ErrorCode::Success), data(_data) {}
+    QByteArray data;
+  };
+
+  static ReplyDataResult GetReplyData(QNetworkReply *reply);
+
+ protected:
+  virtual QString service_name() const = 0;
+  virtual bool authentication_required() const = 0;
+  virtual bool authenticated() const = 0;
+  virtual bool use_authorization_header() const = 0;
+  virtual QByteArray authorization_header() const = 0;
+
+  virtual QNetworkReply *CreateGetRequest(const QUrl &url, const bool fake_user_agent_header);
+  virtual QNetworkReply *CreateGetRequest(const QUrl &url, const ParamList &params = ParamList(), const bool fake_user_agent_header = false);
+  virtual QNetworkReply *CreateGetRequest(const QUrl &url, const QUrlQuery &url_query, const bool fake_user_agent_header = false);
+  virtual QNetworkReply *CreatePostRequest(const QUrl &url, const QByteArray &content_type_header, const QByteArray &data);
+  virtual QNetworkReply *CreatePostRequest(const QUrl &url, const QUrlQuery &url_query);
+  virtual QNetworkReply *CreatePostRequest(const QUrl &url, const ParamList &params);
+  virtual QNetworkReply *CreatePostRequest(const QUrl &url, const QJsonDocument &json_document);
+  virtual QNetworkReply *CreatePostRequest(const QUrl &url, const QJsonObject &json_object);
+  virtual void Error(const QString &error_message, const QVariant &debug_output = QVariant());
+
+ public Q_SLOTS:
+  void HandleSSLErrors(const QList<QSslError> &ssl_errors);
+
+ Q_SIGNALS:
+  void ShowErrorDialog(const QString &error);
+
+ protected:
+  const SharedPtr<NetworkAccessManager> network_;
+  QList<QNetworkReply*> replies_;
+};
+
+#endif  // HTTPBASEREQUEST_H