setup electron app with boilerplate

cpp/src/authmanager.h

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+#ifndef AUTHMANAGER_H
+#define AUTHMANAGER_H
+
+#include <QObject>
+
+QT_BEGIN_NAMESPACE
+class QSettings;
+QT_END_NAMESPACE
+
+struct SessionData
+{
+  QString id;
+  QString email;
+  QString emailPrefix;
+};
+
+class AuthManager : public QObject
+{
+  Q_OBJECT
+public:
+  explicit AuthManager(QObject *parent = nullptr);
+
+  bool isSignedIn() const;
+
+  /// @brief If isSignedIn() this will contain the human's session data.
+  /// @returns Session data for the authed human. nullptr if not signed in.
+  SessionData *sessionData() const;
+
+public slots:
+  /// @brief Sends a code to the requested email.
+  ///
+  /// You must verify the code in the signIn method to receive a session.
+  ///
+  /// @params email to send code to.
+  void requestSignInCode(const QString &email);
+
+  /// @brief Creates a session if authenticated.
+  ///
+  /// @params code that was sent to the email in the previous step
+  void signIn(const QString &code);
+
+  void signOut();
+
+  /// @brief checks if there is a cached session that is valid
+  void tryRestoreSession();
+
+signals:
+  void sessionRestoreCompleted();
+
+  void isSignedInChanged();
+  void signedOut();
+  void signedIn();
+
+  void codeSentToEmail(const QString &email);
+
+  void errorOccurred(const QString &message);
+
+private:
+  QString m_lastEmail;
+
+  bool m_isSignedIn;
+  void setIsSignedIn(bool);
+
+  SessionData *m_sessionData;
+
+  QSettings *m_settings;
+  QString m_sessionToken;
+
+  /// Sets session token internally to class, in storage, and sets networkmanager appropriately
+  /// Pass "" if you want to remove it.
+  void setSessionToken(const QString &);
+};
+
+#endif // AUTHMANAGER_H