1 files changed, 45 insertions, 0 deletions
diff --git a/credentials.h b/credentials.h
new file mode 100644
index 0000000..100729b
--- /dev/null
+++ b/credentials.h
@@ -0,0 +1,45 @@
+#ifndef CREDENTIALS_H
+#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>;
+    using PairList = QList<Pair>;
+    using StoreResult = std::variant<Success, Error>;
+    using LoadResult = std::variant<QString, Error>;
+    using PairListResult = std::variant<PairList, Error>;
+
+    QXmppTask<PairListResult> load();
+    QXmppTask<StoreResult> store(Client *c);
+
+private:
+    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