1 files changed, 25 insertions, 6 deletions
diff --git a/credentials.h b/credentials.h
index 7de90e0..100729b 100644
--- a/credentials.h
+++ b/credentials.h
@@ -2,25 +2,44 @@
 #define CREDENTIALS_H
 
 #include "client.h"
+#include <QXmppTask.h>
+#include <QXmppPromise.h>
 #include <QObject>
 #include <QList>
 #include <QPair>
 #include <QStringList>
+#include <variant>
 
 class Credentials : public QObject
 {
     Q_OBJECT
 public:
+    struct Success {};
+    struct Error
+    {
+        QString description;
+    };
+
     using Pair = QPair<QString, QString>;
-    QList<Pair> load();
+    using PairList = QList<Pair>;
+    using StoreResult = std::variant<Success, Error>;
+    using LoadResult = std::variant<QString, Error>;
+    using PairListResult = std::variant<PairList, Error>;
 
-public Q_SLOTS:
-    void store(Client *c);
+    QXmppTask<PairListResult> load();
+    QXmppTask<StoreResult> store(Client *c);
 
 private:
-    static void storeUser(const QString &user);
-    static QString storedUsersList();
-    static QStringList storedUsers();
+    using Users = std::variant<QStringList, Error>;
+
+    QXmppTask<StoreResult> store(const QString &key, const QString &value);
+    QXmppTask<StoreResult> store(const QString &user);
+    QXmppTask<LoadResult> load(const QString &key);
+    QXmppTask<LoadResult> storedUsersList();
+    QXmppTask<Users> storedUsers();
+    QXmppTask<PairListResult> load(PairList &pairs,
+        QStringList::const_iterator &it,
+        QStringList::const_iterator end);
 };
 
 #endif