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/*
 * Copyright (c) 2010-2016 Isode Limited.
 * All rights reserved.
 * See the COPYING file for more information.
 */

#include <Swiften/Client/NickResolver.h>

#include <memory>

#include <boost/bind.hpp>

#include <Swiften/MUC/MUCRegistry.h>
#include <Swiften/Roster/XMPPRoster.h>
#include <Swiften/VCards/VCardManager.h>

// FIXME: The NickResolver currently relies on the vcard being requested by the client on login.
// The VCardManager should get an onConnected() signal (which is signalled when the stanzachannel is available(, and each time this is emitted,
// the nickresolver should request the vcard.
// FIXME: The ownJID functionality should probably be removed, and NickManager should be used directly.

namespace Swift {

NickResolver::NickResolver(const JID& ownJID, XMPPRoster* xmppRoster, VCardManager* vcardManager, MUCRegistry* mucRegistry) : ownJID_(ownJID) {
    xmppRoster_ = xmppRoster;
    vcardManager_ = vcardManager;
    if (vcardManager_) {
        vcardManager_->onVCardChanged.connect(boost::bind(&NickResolver::handleVCardReceived, this, _1, _2));
    }
    mucRegistry_ = mucRegistry;
    xmppRoster_->onJIDUpdated.connect(boost::bind(&NickResolver::handleJIDUpdated, this, _1, _2, _3));
    xmppRoster_->onJIDAdded.connect(boost::bind(&NickResolver::handleJIDAdded, this, _1));
}

void NickResolver::handleJIDUpdated(const JID& jid, const std::string& previousNick, const std::vector<std::string>& /*groups*/) {
    onNickChanged(jid, previousNick);
}

void NickResolver::handleJIDAdded(const JID& jid) {
    std::string oldNick(jidToNick(jid));
    onNickChanged(jid, oldNick);
}

std::string NickResolver::jidToNick(const JID& jid) {
    if (jid.toBare() == ownJID_) {
        if (!ownNick_.empty()) {
            return ownNick_;
        }
    }
    std::string nick;

    if (mucRegistry_ && mucRegistry_->isMUC(jid.toBare()) ) {
        return jid.getResource().empty() ? jid.toBare().toString() : jid.getResource();
    }

    if (xmppRoster_->containsJID(jid) && !xmppRoster_->getNameForJID(jid).empty()) {
        return xmppRoster_->getNameForJID(jid);
    }

    return jid.toBare();
}

void NickResolver::handleVCardReceived(const JID& jid, VCard::ref ownVCard) {
    if (!jid.equals(ownJID_, JID::WithoutResource)) {
        return;
    }
    std::string initialNick = ownNick_;
    ownNick_ = ownJID_.toString();
    if (ownVCard) {
        if (!ownVCard->getNickname().empty()) {
            ownNick_ = ownVCard->getNickname();
        } else if (!ownVCard->getGivenName().empty()) {
            ownNick_ = ownVCard->getGivenName();
        } else if (!ownVCard->getFullName().empty()) {
            ownNick_ = ownVCard->getFullName();
        }
    }
}

}