setup electron app with boilerplate

cpp/src/networkmanager.h

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+#ifndef NETWORKMANAGER_H
+#define NETWORKMANAGER_H
+
+#include <QObject>
+#include <QNetworkRequest>
+
+QT_BEGIN_NAMESPACE
+class QNetworkReply;
+class QNetworkAccessManager;
+class QJsonDocument;
+QT_END_NAMESPACE
+
+class NetworkManager : public QObject
+{
+  Q_OBJECT
+public:
+  static NetworkManager &instance();
+
+  // Delete copy constructor and assignment
+  NetworkManager(const NetworkManager &) = delete;
+  void operator=(const NetworkManager &) = delete;
+
+  QString sessionToken() const;
+
+public slots:
+  // Convenience methods that inject session token.
+  // Network manager discard replies internally, in cases where a consumer callsite prefers to not manage QNetworkReply.
+  QNetworkReply *get(const QString &path);
+  QNetworkReply *post(const QString &path, const QJsonDocument &data);
+  QNetworkReply *put(const QString &path, const QJsonDocument &data);
+  QNetworkReply *patch(const QString &path, const QJsonDocument &data);
+  QNetworkReply *del(const QString &path);
+  QNetworkReply *del(const QString &path, const QJsonDocument &data);
+
+  void ping();
+
+  /// @brief Builds an authenticated QNetworkRequest for the given path.
+  /// Callers can further configure the request (e.g. redirect policy) before sending.
+  QNetworkRequest buildRequest(const QString &path);
+
+  /// @brief sets session token which will is injected into every request's headers
+  void setSessionToken(const QString &token);
+
+signals:
+  /// @brief Emitted when a request is made and fails required authentication.
+  void unauthorizedDetected();
+  void pingResult(int ms);
+  void pingFailed();
+
+private:
+  NetworkManager();
+  ~NetworkManager();
+
+  QString m_sessionToken;
+  QNetworkAccessManager *m_qnam;
+
+  void setAuthHeader(QNetworkRequest &request);
+  /// @brief Combines the api url with given path
+  /// @param path should be like "/auth/me"
+  QString getFullUrl(const QString &path);
+};
+
+#endif // NETWORKMANAGER_H