/*!
 * \file single_test_main.cc
 * \brief  This file contains the main function for tests (used with CTest).
 * \author Carles Fernandez-Prades, 2012. cfernandez(at)cttc.es
 *
 *
 * -----------------------------------------------------------------------------
 *
 * GNSS-SDR is a Global Navigation Satellite System software-defined receiver.
 * This file is part of GNSS-SDR.
 *
 * Copyright (C) 2010-2020  (see AUTHORS file for a list of contributors)
 * SPDX-License-Identifier: GPL-3.0-or-later
 *
 * -----------------------------------------------------------------------------
 */


#include "concurrent_map.h"
#include "concurrent_queue.h"
#include "gnss_sdr_flags.h"
#include "gps_acq_assist.h"
#include <gtest/gtest.h>
#include <fstream>
#include <iostream>
#include <memory>
#include <ostream>
#include <string>

#if USE_GLOG_AND_GFLAGS
#include <gflags/gflags.h>
#include <glog/logging.h>
#if GFLAGS_OLD_NAMESPACE
namespace gflags
{
using namespace google;
}
DECLARE_string(log_dir);
#endif
#else
#include <absl/flags/flag.h>
#include <absl/flags/parse.h>
#include <absl/log/flags.h>
#include <absl/log/initialize.h>
#include <absl/log/log.h>
#include <absl/log/log_sink.h>
#include <absl/log/log_sink_registry.h>
class TestLogSink : public absl::LogSink
{
public:
    TestLogSink()
    {
        if (!absl::GetFlag(FLAGS_log_dir).empty())
            {
                logfile.open(absl::GetFlag(FLAGS_log_dir) + "/test.log");
            }
        else
            {
                logfile.open(GetTempDir() + "/test.log");
            }
    }
    void Send(const absl::LogEntry& entry) override
    {
        logfile << entry.text_message_with_prefix_and_newline() << std::flush;
    }

private:
    std::ofstream logfile;
};

class TestLogSinkGuard
{
public:
    TestLogSinkGuard() = default;
    TestLogSinkGuard(const TestLogSinkGuard&) = delete;
    TestLogSinkGuard& operator=(const TestLogSinkGuard&) = delete;
    TestLogSinkGuard(TestLogSinkGuard&&) = delete;
    TestLogSinkGuard& operator=(TestLogSinkGuard&&) = delete;
    ~TestLogSinkGuard() noexcept
    {
        Shutdown();
    }

    void Register()
    {
        log_sink.reset(new TestLogSink);
        absl::AddLogSink(log_sink.get());
        registered = true;
        absl::InitializeLog();
    }

    void Shutdown() noexcept
    {
        if (registered)
            {
                try
                    {
                        absl::FlushLogSinks();
                    }
                catch (...)
                    {
                    }
                try
                    {
                        absl::RemoveLogSink(log_sink.get());
                    }
                catch (...)
                    {
                    }
                registered = false;
            }
        log_sink.reset();
    }

private:
    std::unique_ptr<TestLogSink> log_sink;
    bool registered = false;
};
#endif


Concurrent_Queue<Gps_Acq_Assist> global_gps_acq_assist_queue;

Concurrent_Map<Gps_Acq_Assist> global_gps_acq_assist_map;


int main(int argc, char** argv)
try
    {
#if USE_GLOG_AND_GFLAGS
        try
            {
                testing::InitGoogleTest(&argc, argv);
                gflags::ParseCommandLineFlags(&argc, &argv, true);
            }
        catch (...)
            {
            }  // catch the "testing::internal::<unnamed>::ClassUniqueToAlwaysTrue" from gtest
#else
        TestLogSinkGuard log_sink;
        absl::ParseCommandLine(argc, argv);
        try
            {
                testing::InitGoogleTest(&argc, argv);
            }
        catch (...)
            {
            }  // catch the "testing::internal::<unnamed>::ClassUniqueToAlwaysTrue" from gtest
        log_sink.Register();
#endif
        int res = 0;
        try
            {
                res = RUN_ALL_TESTS();
            }
        catch (...)
            {
                LOG(WARNING) << "Unexpected catch";
            }
#if USE_GLOG_AND_GFLAGS
        gflags::ShutDownCommandLineFlags();
#else
        log_sink.Shutdown();
#endif
        return res;
    }
catch (const std::exception& e)
    {
        std::cerr << e.what() << '\n';
        return 1;
    }
catch (...)
    {
        std::cerr << "Unexpected error\n";
        return 1;
    }