/*
 *
 *    Copyright (c) 2021 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.
 */

/**
 *    @file
 *      This file implements unit tests for CHIP Interaction Model Engine
 *
 */

#include <app/InteractionModelEngine.h>
#include <app/tests/AppTestContext.h>
#include <lib/core/CHIPCore.h>
#include <lib/core/CHIPTLV.h>
#include <lib/core/CHIPTLVDebug.hpp>
#include <lib/core/CHIPTLVUtilities.hpp>
#include <lib/support/ErrorStr.h>
#include <lib/support/UnitTestRegistration.h>
#include <messaging/ExchangeContext.h>
#include <messaging/Flags.h>
#include <platform/CHIPDeviceLayer.h>

#include <nlunit-test.h>

using TestContext = chip::Test::AppContext;

namespace chip {
namespace app {
class TestInteractionModelEngine
{
public:
    static void TestClusterInfoPushRelease(nlTestSuite * apSuite, void * apContext);
    static void TestMergeOverlappedAttributePath(nlTestSuite * apSuite, void * apContext);
    static int GetClusterInfoListLength(ClusterInfo * apClusterInfoList);
};

int TestInteractionModelEngine::GetClusterInfoListLength(ClusterInfo * apClusterInfoList)
{
    int length           = 0;
    ClusterInfo * runner = apClusterInfoList;
    while (runner != nullptr)
    {
        runner = runner->mpNext;
        length++;
    }
    return length;
}

void TestInteractionModelEngine::TestClusterInfoPushRelease(nlTestSuite * apSuite, void * apContext)
{
    TestContext & ctx = *static_cast<TestContext *>(apContext);
    CHIP_ERROR err    = CHIP_NO_ERROR;
    err               = InteractionModelEngine::GetInstance()->Init(&ctx.GetExchangeManager(), nullptr);
    NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
    ClusterInfo * clusterInfoList = nullptr;
    ClusterInfo clusterInfo1;
    ClusterInfo clusterInfo2;
    ClusterInfo clusterInfo3;

    clusterInfo1.mEndpointId = 1;
    clusterInfo2.mEndpointId = 2;
    clusterInfo3.mEndpointId = 3;

    InteractionModelEngine::GetInstance()->PushFront(clusterInfoList, clusterInfo1);
    NL_TEST_ASSERT(apSuite, clusterInfoList != nullptr && clusterInfo1.mEndpointId == clusterInfoList->mEndpointId);
    NL_TEST_ASSERT(apSuite, GetClusterInfoListLength(clusterInfoList) == 1);

    InteractionModelEngine::GetInstance()->PushFront(clusterInfoList, clusterInfo2);
    NL_TEST_ASSERT(apSuite, clusterInfoList != nullptr && clusterInfo2.mEndpointId == clusterInfoList->mEndpointId);
    NL_TEST_ASSERT(apSuite, GetClusterInfoListLength(clusterInfoList) == 2);

    InteractionModelEngine::GetInstance()->PushFront(clusterInfoList, clusterInfo3);
    NL_TEST_ASSERT(apSuite, clusterInfoList != nullptr && clusterInfo3.mEndpointId == clusterInfoList->mEndpointId);
    NL_TEST_ASSERT(apSuite, GetClusterInfoListLength(clusterInfoList) == 3);

    InteractionModelEngine::GetInstance()->ReleaseClusterInfoList(clusterInfoList);
    NL_TEST_ASSERT(apSuite, GetClusterInfoListLength(clusterInfoList) == 0);
}

void TestInteractionModelEngine::TestMergeOverlappedAttributePath(nlTestSuite * apSuite, void * apContext)
{
    TestContext & ctx = *static_cast<TestContext *>(apContext);
    CHIP_ERROR err    = CHIP_NO_ERROR;
    err               = InteractionModelEngine::GetInstance()->Init(&ctx.GetExchangeManager(), nullptr);
    NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
    ClusterInfo clusterInfoList[2];

    clusterInfoList[0].mFlags.Set(chip::app::ClusterInfo::Flags::kFieldIdValid);
    clusterInfoList[0].mFieldId = 1;
    clusterInfoList[1].mFlags.Set(chip::app::ClusterInfo::Flags::kFieldIdValid);
    clusterInfoList[1].mFieldId = 2;

    chip::app::ClusterInfo testClusterInfo;
    testClusterInfo.mFlags.Set(chip::app::ClusterInfo::Flags::kFieldIdValid);
    testClusterInfo.mFieldId = 3;

    NL_TEST_ASSERT(apSuite, !InteractionModelEngine::GetInstance()->MergeOverlappedAttributePath(clusterInfoList, testClusterInfo));
    testClusterInfo.mFieldId = 0xFFFFFFFF;
    NL_TEST_ASSERT(apSuite, InteractionModelEngine::GetInstance()->MergeOverlappedAttributePath(clusterInfoList, testClusterInfo));
    testClusterInfo.mFlags.Set(chip::app::ClusterInfo::Flags::kListIndexValid);
    testClusterInfo.mFieldId   = 1;
    testClusterInfo.mListIndex = 2;
    NL_TEST_ASSERT(apSuite, InteractionModelEngine::GetInstance()->MergeOverlappedAttributePath(clusterInfoList, testClusterInfo));
}
} // namespace app
} // namespace chip

namespace {

// clang-format off
const nlTest sTests[] =
        {
                NL_TEST_DEF("TestClusterInfoPushRelease", chip::app::TestInteractionModelEngine::TestClusterInfoPushRelease),
                NL_TEST_DEF("TestMergeOverlappedAttributePath", chip::app::TestInteractionModelEngine::TestMergeOverlappedAttributePath),
                NL_TEST_SENTINEL()
        };
// clang-format on

// clang-format off
nlTestSuite sSuite =
{
    "TestInteractionModelEngine",
    &sTests[0],
    TestContext::Initialize,
    TestContext::Finalize
};
// clang-format on

} // namespace

int TestInteractionModelEngine()
{
    TestContext gContext;
    nlTestRunner(&sSuite, &gContext);
    return (nlTestRunnerStats(&sSuite));
}

CHIP_REGISTER_TEST_SUITE(TestInteractionModelEngine)