/*
 * Copyright (c) 2010-2017 Isode Limited.
 * All rights reserved.
 * See the COPYING file for more information.
 */

#pragma once

#include <set>

#include <boost/date_time/posix_time/posix_time.hpp>
#include <boost/signals2.hpp>

#include <Swiften/Base/API.h>
#include <Swiften/Elements/ErrorPayload.h>
#include <Swiften/Elements/VCard.h>
#include <Swiften/JID/JID.h>
#include <Swiften/VCards/SetVCardRequest.h>

namespace Swift {
    class IQRouter;
    class VCardStorage;

    class SWIFTEN_API VCardManager : public boost::signals2::trackable {
        public:
            VCardManager(const JID& ownJID, IQRouter* iqRouter, VCardStorage* vcardStorage);
            ~VCardManager();

            VCard::ref getVCard(const JID& jid) const;
            VCard::ref getVCardAndRequestWhenNeeded(const JID& jid, const boost::posix_time::time_duration& allowedAge = boost::posix_time::time_duration(boost::date_time::pos_infin));
            void requestVCard(const JID& jid);
            void requestOwnVCard();

            std::string getPhotoHash(const JID& jid) const;


            SetVCardRequest::ref createSetVCardRequest(VCard::ref);

        public:
            /**
             * The JID will always be bare.
             */
            boost::signals2::signal<void (const JID&, VCard::ref)> onVCardChanged;

            /**
             * Emitted when we received an error on looking up a vCard.
             */
            boost::signals2::signal<void (const JID&, ErrorPayload::ref)> onVCardRetrievalError;

            /**
             * Emitted when our own vcard changes.
             *
             * onVCardChanged will also be emitted.
             */
            boost::signals2::signal<void (VCard::ref)> onOwnVCardChanged;

        private:
            void handleVCardReceived(const JID& from, VCard::ref, ErrorPayload::ref);
            void handleSetVCardResponse(VCard::ref, ErrorPayload::ref);
            void setVCard(const JID& jid, VCard::ref vcard);

        private:
            JID ownJID;
            IQRouter* iqRouter;
            VCardStorage* storage;
            std::set<JID> requestedVCards;
    };
}