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/*
 * Copyright (c) 2010-2013 Remko Tronçon
 * Licensed under the GNU General Public License v3.
 * See Documentation/Licenses/GPLv3.txt for more information.
 */

#include <Swiften/Avatars/AvatarManagerImpl.h>

#include <boost/bind.hpp>

#include <Swiften/Avatars/VCardUpdateAvatarManager.h>
#include <Swiften/Avatars/VCardAvatarManager.h>
#include <Swiften/Avatars/AvatarStorage.h>
#include <Swiften/Avatars/OfflineAvatarManager.h>
#include <Swiften/Base/ByteArray.h>

namespace Swift {

AvatarManagerImpl::AvatarManagerImpl(VCardManager* vcardManager, StanzaChannel* stanzaChannel, AvatarStorage* avatarStorage, CryptoProvider* crypto, MUCRegistry* mucRegistry) : avatarStorage(avatarStorage) {
	vcardUpdateAvatarManager = new VCardUpdateAvatarManager(vcardManager, stanzaChannel, avatarStorage, crypto, mucRegistry);
	combinedAvatarProvider.addProvider(vcardUpdateAvatarManager);

	vcardAvatarManager = new VCardAvatarManager(vcardManager, avatarStorage, crypto, mucRegistry);
	combinedAvatarProvider.addProvider(vcardAvatarManager);

	offlineAvatarManager = new OfflineAvatarManager(avatarStorage);
	combinedAvatarProvider.addProvider(offlineAvatarManager);

	combinedAvatarProvider.onAvatarChanged.connect(boost::bind(&AvatarManagerImpl::handleCombinedAvatarChanged, this, _1));
}

AvatarManagerImpl::~AvatarManagerImpl() {
	combinedAvatarProvider.onAvatarChanged.disconnect(boost::bind(&AvatarManagerImpl::handleCombinedAvatarChanged, this, _1));

	combinedAvatarProvider.removeProvider(offlineAvatarManager);
	delete offlineAvatarManager;
	combinedAvatarProvider.removeProvider(vcardAvatarManager);
	delete vcardAvatarManager;
	combinedAvatarProvider.removeProvider(vcardUpdateAvatarManager);
	delete vcardUpdateAvatarManager;
}

boost::filesystem::path AvatarManagerImpl::getAvatarPath(const JID& jid) const {
	boost::optional<std::string> hash = combinedAvatarProvider.getAvatarHash(jid);
	if (hash && !hash->empty()) {
		return avatarStorage->getAvatarPath(*hash);
	}
	return boost::filesystem::path();
}

ByteArray AvatarManagerImpl::getAvatar(const JID& jid) const {
	boost::optional<std::string> hash = combinedAvatarProvider.getAvatarHash(jid);
	if (hash && !hash->empty()) {
		return avatarStorage->getAvatar(*hash);
	}
	return ByteArray();
}

void AvatarManagerImpl::handleCombinedAvatarChanged(const JID& jid) {
	boost::optional<std::string> hash = combinedAvatarProvider.getAvatarHash(jid);
	assert(hash);
	offlineAvatarManager->setAvatar(jid, *hash);
	onAvatarChanged(jid);
}

}