/*
 *    Copyright (c) 2024 Project CHIP Authors
 *    All rights reserved.
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */

#include <app/clusters/thread-border-router-management-server/thread-border-router-management-server.h>
#include <app/server/Server.h>
#include <lib/core/CHIPEncoding.h>
#include <lib/support/CodeUtils.h>
#include <lib/support/Span.h>
#include <lib/support/ThreadOperationalDataset.h>
#include <lib/support/logging/CHIPLogging.h>

#include <optional>

using namespace chip;
using namespace chip::literals;
using namespace chip::app;
using namespace chip::app::Clusters;

namespace {
class FakeBorderRouterDelegate final : public ThreadBorderRouterManagement::Delegate
{
    CHIP_ERROR Init(AttributeChangeCallback * attributeChangeCallback) override { return CHIP_NO_ERROR; }

    bool GetPanChangeSupported() override { return true; }

    void GetBorderRouterName(MutableCharSpan & borderRouterName) override
    {
        CopyCharSpanToMutableCharSpan("netman-br"_span, borderRouterName);
    }

    CHIP_ERROR GetBorderAgentId(MutableByteSpan & borderAgentId) override
    {
        static constexpr uint8_t kBorderAgentId[] = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
                                                      0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff };
        VerifyOrReturnError(borderAgentId.size() == 16, CHIP_ERROR_INVALID_ARGUMENT);
        return CopySpanToMutableSpan(ByteSpan(kBorderAgentId), borderAgentId);
    }

    uint16_t GetThreadVersion() override { return /* Thread 1.3.1 */ 5; }

    bool GetInterfaceEnabled() override { return false; }

    CHIP_ERROR GetDataset(Thread::OperationalDataset & dataset, DatasetType type) override { return CHIP_ERROR_NOT_FOUND; }

    void SetActiveDataset(const Thread::OperationalDataset & activeDataset, uint32_t sequenceNum,
                          ActivateDatasetCallback * callback) override
    {
        ChipLogAutomation("SetActiveDataset");
        callback->OnActivateDatasetComplete(sequenceNum, CHIP_NO_ERROR);
    }

    CHIP_ERROR CommitActiveDataset() override { return CHIP_NO_ERROR; }
    CHIP_ERROR RevertActiveDataset() override { return CHIP_NO_ERROR; }

    CHIP_ERROR SetPendingDataset(const Thread::OperationalDataset & pendingDataset) override
    {
        ChipLogAutomation("SetPendingDataset");
        return CHIP_NO_ERROR;
    }
};

FakeBorderRouterDelegate gBorderRouterDelegate{};
} // namespace

std::optional<ThreadBorderRouterManagement::ServerInstance> gThreadBorderRouterManagementServer;
void emberAfThreadBorderRouterManagementClusterInitCallback(EndpointId endpoint)
{
    VerifyOrDie(!gThreadBorderRouterManagementServer);
    gThreadBorderRouterManagementServer.emplace(endpoint, &gBorderRouterDelegate, Server::GetInstance().GetFailSafeContext())
        .Init();
}