Added additional UserServices functionality

KomplexHubPlugin/common/userservices.h

@@ -8,6 +8,10 @@
 #include <QJsonDocument>
 #include <QJsonArray>
 #include <QJsonObject>
+#include <QDir>
+#include <QFile>
+#include <QStandardPaths>
+
 #include "komplex_global.h"
 #include "qwallet.h"
 
@@ -32,23 +36,34 @@ struct UserCredentials
                !sessionToken.isEmpty() && sessionToken.isValidUtf8();
     }
 };
+Q_DECLARE_METATYPE(UserCredentials)
 
 class KOMPLEX_EXPORT UserServices : public QObject
 {
     Q_OBJECT
 
 public:
-    auto instance() const -> QWeakPointer<UserServices>;
+    static auto instance() -> QWeakPointer<UserServices>;
     static auto userCredentials() -> const UserCredentials &;
+
+    [[nodiscard]]
     auto login(const QString &username, const QByteArray &password) -> QFuture<UserCredentials>;
 
     auto errorString() const -> const QString &;
 
+    [[nodiscard]]
+    auto readPassword(const QString &username) -> QFuture<QByteArray>;
+
+    [[nodiscard]]
+    auto readToken(const QString &username) -> QFuture<UserCredentials>;
+
+    [[nodiscard]]
+    auto defaultUsername() -> QFuture<QString>;
+
 signals:
     auto loginComplete() -> void;
     auto loginFailed() -> void;
     auto userCredentialsChanged() -> void;
-
     auto errorStringChanged() -> void;
 
 private:
@@ -60,10 +75,17 @@ private:
 
     auto setUserCredentials(const UserCredentials &credentials) -> void;
     auto setErrorString(const QString &errorString) -> void;
+    auto savePassword(const QString &username, const QByteArray &password) -> void;
+    auto saveToken(const QString &username, const QByteArray &token, const QDateTime &expiry) -> void;
+    auto saveDefaultUsername(const QString &username) -> void;
 
     QWallet *m_wallet = nullptr;
     QString m_errorString;
     inline static UserCredentials s_userCredentials;
+
+    inline const static char PART_SEPARATOR = static_cast<char>('\0x1f');
+
     Q_PROPERTY(UserCredentials userCredentials READ userCredentials NOTIFY userCredentialsChanged FINAL)
     Q_PROPERTY(QString errorString READ errorString WRITE setErrorString NOTIFY errorStringChanged FINAL)
-};
+};
+Q_DECLARE_METATYPE(UserServices)