/*
 *  Copyright (c) 2016, The OpenThread Authors.
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *  3. Neither the name of the copyright holder nor the
 *     names of its contributors may be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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 *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 *  POSSIBILITY OF SUCH DAMAGE.
 */

/**
 * @file
 *   This file includes definitions for MLE functionality required by the Thread Router and Leader roles.
 */

#ifndef MLE_ROUTER_HPP_
#define MLE_ROUTER_HPP_

#include "utils/wrap_string.h"

#include "thread/mle.hpp"
#include "thread/mle_tlvs.hpp"
#include "thread/thread_tlvs.hpp"

namespace ot {
namespace Mle {

class MleRouter: public Mle
{
    friend class Mle;

public:
    explicit MleRouter(ThreadNetif &aThreadNetif) : Mle(aThreadNetif) { }

    bool IsSingleton(void) { return false; }

    otError BecomeRouter(ThreadStatusTlv::Status) { return OT_ERROR_NOT_CAPABLE; }
    otError BecomeLeader(void) { return OT_ERROR_NOT_CAPABLE; }

    uint8_t GetActiveRouterCount(void) const { return 0; }

    uint32_t GetLeaderAge(void) const { return 0; }

    uint32_t GetPreviousPartitionId(void) const { return 0; }
    void SetPreviousPartitionId(uint32_t) { }
    void SetRouterId(uint8_t) { }

    uint16_t GetNextHop(uint16_t aDestination) const { return Mle::GetNextHop(aDestination); }

    uint8_t GetNetworkIdTimeout(void) const { return 0; }

    uint8_t GetRouteCost(uint16_t) const { return 0; }
    uint8_t GetLinkCost(uint16_t) { return 0; }
    uint8_t GetCost(uint16_t) { return 0; }

    uint8_t GetRouterIdSequence(void) const { return 0; }

    otError RemoveNeighbor(const Mac::Address &) { return BecomeDetached(); }
    otError RemoveNeighbor(Neighbor &) { return BecomeDetached(); }

    Child *GetChild(uint16_t) { return NULL; }
    Child *GetChild(const Mac::ExtAddress &) { return NULL; }
    Child *GetChild(const Mac::Address &) { return NULL; }

    uint8_t GetChildIndex(const Child &) { return 0; }

    Child *GetChildren(uint8_t *aNumChildren) {
        if (aNumChildren != NULL) {
            *aNumChildren = 0;
        }

        return NULL;
    }

    otError RestoreChildren(void) {return OT_ERROR_NOT_IMPLEMENTED; }
    otError RemoveStoredChild(uint16_t) {return OT_ERROR_NOT_IMPLEMENTED; }
    otError StoreChild(uint16_t) {return OT_ERROR_NOT_IMPLEMENTED; }
    otError RefreshStoredChildren(void) { return OT_ERROR_NOT_IMPLEMENTED; }

    Neighbor *GetNeighbor(uint16_t aAddress) { return Mle::GetNeighbor(aAddress); }
    Neighbor *GetNeighbor(const Mac::ExtAddress &aAddress) { return Mle::GetNeighbor(aAddress); }
    Neighbor *GetNeighbor(const Mac::Address &aAddress) { return Mle::GetNeighbor(aAddress); }
    Neighbor *GetNeighbor(const Ip6::Address &aAddress) { return Mle::GetNeighbor(aAddress); }

    otError GetNextNeighborInfo(otNeighborInfoIterator &, otNeighborInfo &) { return OT_ERROR_NOT_IMPLEMENTED; }

    Router *GetRouters(uint8_t *aNumRouters) {
        if (aNumRouters != NULL) {
            *aNumRouters = 0;
        }

        return NULL;
    }

    static int ComparePartitions(bool, const LeaderDataTlv &, bool, const LeaderDataTlv &) { return 0; }

    void ResolveRoutingLoops(uint16_t, uint16_t) { }

    otError CheckReachability(uint16_t aMeshSource, uint16_t aMeshDest, Ip6::Header &aIp6Header) {
        return Mle::CheckReachability(aMeshSource, aMeshDest, aIp6Header);
    }

    static bool IsRouterIdValid(uint8_t aRouterId) { return aRouterId <= kMaxRouterId; }

    void FillConnectivityTlv(ConnectivityTlv &) { }
    void FillRouteTlv(RouteTlv &) { }

    otError SendChildUpdateRequest(void) { return Mle::SendChildUpdateRequest(); }

#if OPENTHREAD_CONFIG_ENABLE_STEERING_DATA_SET_OOB
    otError SetSteeringData(otExtAddress *) { return OT_ERROR_NOT_IMPLEMENTED; }
#endif // OPENTHREAD_CONFIG_ENABLE_STEERING_DATA_SET_OOB

    otError GetMaxChildTimeout(uint32_t &) { return OT_ERROR_NOT_IMPLEMENTED; }

private:
    otError HandleDetachStart(void) { return OT_ERROR_NONE; }
    otError HandleChildStart(AttachMode) { return OT_ERROR_NONE; }
    otError HandleLinkRequest(const Message &, const Ip6::MessageInfo &) { return OT_ERROR_DROP; }
    otError HandleLinkAccept(const Message &, const Ip6::MessageInfo &, uint32_t) { return OT_ERROR_DROP; }
    otError HandleLinkAccept(const Message &, const Ip6::MessageInfo &, uint32_t, bool) { return OT_ERROR_DROP; }
    otError HandleLinkAcceptAndRequest(const Message &, const Ip6::MessageInfo &, uint32_t) { return OT_ERROR_DROP; }
    otError HandleAdvertisement(const Message &, const Ip6::MessageInfo &) { return OT_ERROR_DROP; }
    otError HandleParentRequest(const Message &, const Ip6::MessageInfo &) { return OT_ERROR_DROP; }
    otError HandleChildIdRequest(const Message &, const Ip6::MessageInfo &, uint32_t) { return OT_ERROR_DROP; }
    otError HandleChildUpdateRequest(const Message &, const Ip6::MessageInfo &, uint32_t) { return OT_ERROR_DROP; }
    otError HandleChildUpdateResponse(const Message &, const Ip6::MessageInfo &, uint32_t) { return OT_ERROR_DROP; }
    otError HandleDataRequest(const Message &, const Ip6::MessageInfo &) { return OT_ERROR_DROP; }
    otError HandleNetworkDataUpdateRouter(void) { return OT_ERROR_NONE; }
    otError HandleDiscoveryRequest(const Message &, const Ip6::MessageInfo &) { return OT_ERROR_DROP; }

    void StopAdvertiseTimer(void) { }
    otError ProcessRouteTlv(const RouteTlv &aRoute) { OT_UNUSED_VARIABLE(aRoute); return OT_ERROR_NONE; }
};

}  // namespace Mle
}  // namespace ot

#endif  // MLE_ROUTER_HPP_