//
// Copyright © 2019 Arm Ltd. All rights reserved.
// SPDX-License-Identifier: MIT
//

#include <Filesystem.hpp>
#include <ProfilingService.hpp>
#include <Runtime.hpp>
#include "PrintPacketHeaderHandler.hpp"
#include "TestTimelinePacketHandler.hpp"

#include <boost/filesystem.hpp>
#include <boost/numeric/conversion/cast.hpp>
#include <boost/test/unit_test.hpp>

#include <cstdio>
#include <sstream>
#include <sys/stat.h>

using namespace armnn::profiling;
using namespace armnn;

using namespace std::chrono_literals;

class FileOnlyHelperService : public ProfilingService
{
    public:
    // Wait for a notification from the send thread
    bool WaitForPacketsSent(uint32_t timeout = 1000)
    {
        return ProfilingService::WaitForPacketSent(m_ProfilingService, timeout);
    }
    armnn::profiling::ProfilingService m_ProfilingService;
};

BOOST_AUTO_TEST_SUITE(FileOnlyProfilingDecoratorTests)

std::string UniqueFileName()
{
    std::time_t t = std::time(nullptr);
    char mbstr[100];
    std::strftime(mbstr, sizeof(mbstr), "%Y_%m_%d_%H_%M_%S_", std::localtime(&t));
    std::stringstream ss;
    ss << mbstr;
    ss << t;
    ss << ".bin";
    return ss.str();
}

BOOST_AUTO_TEST_CASE(TestFileOnlyProfiling)
{
    // This test requires the CpuRef backend to be enabled
    if(!BackendRegistryInstance().IsBackendRegistered("CpuRef"))
    {
        return;
    }

    // Create a temporary file name.
    boost::filesystem::path tempPath = boost::filesystem::temp_directory_path();
    boost::filesystem::path tempFile = UniqueFileName();
    tempPath                         = tempPath / tempFile;
    armnn::Runtime::CreationOptions creationOptions;
    creationOptions.m_ProfilingOptions.m_EnableProfiling     = true;
    creationOptions.m_ProfilingOptions.m_FileOnly            = true;
    creationOptions.m_ProfilingOptions.m_CapturePeriod       = 100;
    creationOptions.m_ProfilingOptions.m_TimelineEnabled     = true;
    ILocalPacketHandlerSharedPtr localPacketHandlerPtr = std::make_shared<TestTimelinePacketHandler>();
    creationOptions.m_ProfilingOptions.m_LocalPacketHandlers.push_back(localPacketHandlerPtr);

    armnn::Runtime runtime(creationOptions);

    // Load a simple network
    // build up the structure of the network
    INetworkPtr net(INetwork::Create());

    IConnectableLayer* input = net->AddInputLayer(0, "input");

    NormalizationDescriptor descriptor;
    IConnectableLayer* normalize = net->AddNormalizationLayer(descriptor, "normalization");

    IConnectableLayer* output = net->AddOutputLayer(0, "output");

    input->GetOutputSlot(0).Connect(normalize->GetInputSlot(0));
    normalize->GetOutputSlot(0).Connect(output->GetInputSlot(0));

    input->GetOutputSlot(0).SetTensorInfo(TensorInfo({ 1, 1, 4, 4 }, DataType::Float32));
    normalize->GetOutputSlot(0).SetTensorInfo(TensorInfo({ 1, 1, 4, 4 }, DataType::Float32));

    // optimize the network
    std::vector<armnn::BackendId> backends = { armnn::Compute::CpuRef };
    IOptimizedNetworkPtr optNet = Optimize(*net, backends, runtime.GetDeviceSpec());

    // Load it into the runtime. It should succeed.
    armnn::NetworkId netId;
    BOOST_TEST(runtime.LoadNetwork(netId, std::move(optNet)) == Status::Success);

    static_cast<TestTimelinePacketHandler*>(localPacketHandlerPtr.get())->WaitOnInferenceCompletion(3000);
}

BOOST_AUTO_TEST_CASE(DumpOutgoingValidFileEndToEnd, * boost::unit_test::disabled())
{
    // Create a temporary file name.
    boost::filesystem::path tempPath = boost::filesystem::temp_directory_path();
    boost::filesystem::path tempFile = UniqueFileName();
    tempPath                         = tempPath / tempFile;
    armnn::Runtime::CreationOptions::ExternalProfilingOptions options;
    options.m_EnableProfiling     = true;
    options.m_FileOnly            = true;
    options.m_IncomingCaptureFile = "";
    options.m_OutgoingCaptureFile = tempPath.string();
    options.m_CapturePeriod       = 100;

    FileOnlyHelperService helper;

    // Enable the profiling service
    armnn::profiling::ProfilingService profilingService;
    profilingService.ResetExternalProfilingOptions(options, true);
    // Bring the profiling service to the "WaitingForAck" state
    profilingService.Update();
    profilingService.Update();


    BOOST_CHECK(profilingService.GetCurrentState() == ProfilingState::WaitingForAck);

    profilingService.Update();
    // First packet sent will be the SendStreamMetaDataPacket, it's possible though unlikely that it will be sent twice
    // The second or possibly third packet will be the CounterDirectoryPacket which means the
    // ConnectionAcknowledgedCommandHandler has set the state to active
    uint32_t packetCount = 0;
    while(profilingService.GetCurrentState() != ProfilingState::Active && packetCount < 3)
    {
        if(!helper.WaitForPacketsSent())
        {
            BOOST_FAIL("Timeout waiting for packets");
        }
        packetCount++;
    }

    BOOST_CHECK(profilingService.GetCurrentState() == ProfilingState::Active);
    // Minimum test here is to check that the file was created.
    BOOST_CHECK(boost::filesystem::exists(tempPath.c_str()) == true);

    // Increment a counter.
    BOOST_CHECK(profilingService.IsCounterRegistered(0) == true);
    profilingService.IncrementCounterValue(0);
    BOOST_CHECK(profilingService.GetAbsoluteCounterValue(0) > 0);
    BOOST_CHECK(profilingService.GetDeltaCounterValue(0) > 0);

    // At this point the profiling service is active and we've activated all the counters. Waiting a collection
    // period should be enough to have some data in the file.

    // Wait for 1 collection period plus a bit of overhead..
    helper.WaitForPacketsSent();

    // In order to flush the files we need to gracefully close the profiling service.
    options.m_EnableProfiling = false;
    profilingService.ResetExternalProfilingOptions(options, true);

    // The output file size should be greater than 0.
    BOOST_CHECK(armnnUtils::Filesystem::GetFileSize(tempPath.string().c_str()) > 0);

    // Delete the tmp file.
    BOOST_CHECK(armnnUtils::Filesystem::Remove(tempPath.string().c_str()));
}

BOOST_AUTO_TEST_SUITE_END()