1 files changed, 53 insertions, 0 deletions
diff --git a/Swiften/Disco/FeatureOracle.h b/Swiften/Disco/FeatureOracle.h
new file mode 100644
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+++ b/Swiften/Disco/FeatureOracle.h
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+/*
+ * Copyright (c) 2015-2016 Isode Limited.
+ * All rights reserved.
+ * See the COPYING file for more information.
+ */
+
+#pragma once
+
+#include <unordered_map>
+#include <unordered_set>
+
+#include <Swiften/Base/API.h>
+#include <Swiften/Base/Tristate.h>
+#include <Swiften/Elements/DiscoInfo.h>
+
+namespace Swift {
+
+class EntityCapsProvider;
+class JID;
+class PresenceOracle;
+
+/**
+ * @brief The FeatureOracle class enables direct feature support lookup for client features supported by Swiften.
+ */
+class SWIFTEN_API FeatureOracle {
+    public:
+        FeatureOracle(EntityCapsProvider* capsProvider, PresenceOracle* presenceOracle);
+
+    public:
+        Tristate isFileTransferSupported(const JID& jid);
+        Tristate isMessageReceiptsSupported(const JID& jid);
+        Tristate isMessageCorrectionSupported(const JID& jid);
+        Tristate isWhiteboardSupported(const JID& jid);
+
+        JID getMostAvailableClientForFileTrasfer(const JID& bareJID);
+
+    private:
+        /**
+         * @brief getDiscoResultForJID returns a  shared reference to a DiscoInfo representing features supported by the jid.
+         * @param jid The JID to return an std::unordered_map<std::string, Tristate> for.
+         * @return std::unordered_map<std::string, Tristate>
+         */
+        std::unordered_map<std::string, Tristate> getFeaturesForJID(const JID& jid);
+
+        Tristate isFeatureSupported(const std::unordered_map<std::string, Tristate>& supportedFeatures, const std::string& feature);
+
+    private:
+        EntityCapsProvider* capsProvider_;
+        PresenceOracle* presenceOracle_;
+};
+
+}
+