/*
 * Copyright (c) 2013-2017 Isode Limited.
 * All rights reserved.
 * See the COPYING file for more information.
 */

#pragma once

#include <Swiften/Base/API.h>
#include <Swiften/Elements/ErrorPayload.h>
#include <Swiften/FileTransfer/FileTransferTransporter.h>

namespace Swift {
    class LocalJingleTransportCandidateGenerator;
    class RemoteJingleTransportCandidateSelector;
    class SOCKS5BytestreamRegistry;
    class SOCKS5BytestreamServerManager;
    class SOCKS5BytestreamProxiesManager;
    class SOCKS5BytestreamClientSession;
    class SOCKS5BytestreamServerSession;
    class IDGenerator;
    class IQRouter;
    class ReadBytestream;
    class WriteBytestream;
    class ConnectionFactory;
    class TimerFactory;
    class CryptoProvider;
    class FileTransferOptions;

    class SWIFTEN_API DefaultFileTransferTransporter : public FileTransferTransporter {
        public:
            enum Role {
                Initiator,
                Responder
            };

            DefaultFileTransferTransporter(
                const JID& initiator,
                const JID& responder,
                Role role,
                SOCKS5BytestreamRegistry*,
                SOCKS5BytestreamServerManager* s5bServerManager,
                SOCKS5BytestreamProxiesManager* s5bProxy,
                IDGenerator* idGenerator,
                ConnectionFactory*,
                TimerFactory*,
                CryptoProvider*,
                IQRouter*,
                const FileTransferOptions&);
            virtual ~DefaultFileTransferTransporter() override;


            virtual void initialize();
            virtual void initialize(const std::string& s5bSessionID);

            virtual void startGeneratingLocalCandidates() override;
            virtual void stopGeneratingLocalCandidates() override;

            virtual void addRemoteCandidates(
                    const std::vector<JingleS5BTransportPayload::Candidate>&, const std::string&) override;
            virtual void startTryingRemoteCandidates() override;
            virtual void stopTryingRemoteCandidates() override;

            virtual void startActivatingProxy(const JID& jid) override;
            virtual void stopActivatingProxy() override;

            virtual std::shared_ptr<TransportSession> createIBBSendSession(
                    const std::string& sessionID, unsigned int blockSize, std::shared_ptr<ReadBytestream>) override;
            virtual std::shared_ptr<TransportSession> createIBBReceiveSession(
                    const std::string& sessionID, unsigned long long size, std::shared_ptr<WriteBytestream>) override;
            virtual std::shared_ptr<TransportSession> createRemoteCandidateSession(
                    std::shared_ptr<ReadBytestream>, const JingleS5BTransportPayload::Candidate& candidate) override;
            virtual std::shared_ptr<TransportSession> createRemoteCandidateSession(
                    std::shared_ptr<WriteBytestream>, const JingleS5BTransportPayload::Candidate& candidate) override;
            virtual std::shared_ptr<TransportSession> createLocalCandidateSession(
                    std::shared_ptr<ReadBytestream>, const JingleS5BTransportPayload::Candidate& candidate) override;
            virtual std::shared_ptr<TransportSession> createLocalCandidateSession(
                    std::shared_ptr<WriteBytestream>, const JingleS5BTransportPayload::Candidate& candidate) override;

        private:
            void handleLocalCandidatesGenerated(const std::vector<JingleS5BTransportPayload::Candidate>&);
            void handleRemoteCandidateSelectFinished(
                    const boost::optional<JingleS5BTransportPayload::Candidate>&,
                    std::shared_ptr<SOCKS5BytestreamClientSession>);
            void handleActivateProxySessionResult(const std::string& sessionID, ErrorPayload::ref error);
            void closeLocalSession();
            void closeRemoteSession();
            std::shared_ptr<SOCKS5BytestreamServerSession> getServerSession();

            std::string getSOCKS5DstAddr() const;
            std::string getInitiatorCandidateSOCKS5DstAddr() const;
            std::string getResponderCandidateSOCKS5DstAddr() const;
            std::string getRemoteCandidateSOCKS5DstAddr() const;
            std::string getLocalCandidateSOCKS5DstAddr() const;

        private:
            JID initiator;
            JID responder;
            Role role;
            SOCKS5BytestreamRegistry* s5bRegistry;
            SOCKS5BytestreamServerManager* s5bServerManager;
            SOCKS5BytestreamProxiesManager* s5bProxy;
            CryptoProvider* crypto;
            IQRouter* router;
            LocalJingleTransportCandidateGenerator* localCandidateGenerator;
            RemoteJingleTransportCandidateSelector* remoteCandidateSelector;
            std::string s5bSessionID;
            std::shared_ptr<SOCKS5BytestreamClientSession> remoteS5BClientSession;
    };
}