/***
    Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). All rights reserved.

    File: Entrypoint.cpp
    Date: 2021-5-13
    Author: Reece
***/
#define _AURORA_RUNTIME_BUILD_API_INTERFACES
#include <AuroraCommon.hpp>
#include <AuroraRuntime.hpp>
#include "RuntimeInternal.hpp"
#include "Crypto.hpp"
#include "Processes/Processes.hpp"
#include "RNG/RNG.hpp"
#include "Locale/Locale.hpp"
#include "Console/Console.hpp"
#include "IO/FS/FS.hpp"
#include "IO/IO.hpp"
#include "IO/Net/Net.hpp"
#include "Hashing/Hashing.hpp"
#include "Debug/Debug.hpp"
#include "Async/Async.hpp"
#include "HWInfo/HWInfo.hpp"
#include "Telemetry/Telemetry.hpp"
#include "Threading/Threads/OSThread.hpp"
#include "SWInfo/SWInfo.hpp"
#if defined(AURORA_PLATFORM_WIN32)
    #include "Extensions/Win32/DarkTheme.hpp"
#endif
#include "Process/Process.hpp"
#include "Exit/Exit.hpp"
#include "CmdLine/CmdLine.hpp"
#include "Grug/Grug.hpp"
#include "Threading/Sleep.hpp"

#if defined(AURORA_IS_LINUX_DERIVED)
    void LinuxSuperSecretIOTick();
#endif

namespace Aurora::IO::TLS
{
    void TLSInit();
}

static thread_local bool tlsHackIsMainThread {};

static void Init()
{
    gRuntimeRunLevel = 1;
    tlsHackIsMainThread = true;
#if defined(AURORA_PLATFORM_WIN32)
    Aurora::Extensions::Win32::InitDarkMode();
#endif

    Crypto::InitCrypto();
    Aurora::IO::TLS::TLSInit();

    Aurora::RNG::Init();
    Aurora::Threading::InitSleep();
    Aurora::Process::InitProcess();
    Aurora::SWInfo::InitSwInfo();
    Aurora::Threading::Threads::InitThreading();
    Aurora::Exit::InitExit();
    Aurora::IO::Net::InitNetworking();
    Aurora::Console::Init();
    Aurora::IO::FS::InitResources();
    Aurora::IO::Init();
    Aurora::Console::Init2();
    Aurora::HWInfo::Init();
    Aurora::Telemetry::Init();
    Aurora::Grug::InitGrug();
    Aurora::Debug::InitDebug();
    Aurora::Locale::Init();
    Aurora::CmdLine::Init();
    Aurora::Processes::Init();
    Aurora::Hashing::InitHashing();
    Aurora::Async::InitAsync();
    gRuntimeRunLevel = 2;
}

static void Pump()
{
    Aurora::Console::Pump();

#if defined(AURORA_IS_LINUX_DERIVED)
    ::LinuxSuperSecretIOTick();
#endif
}

static void RuntimeLateClean();

static void Deinit()
{
    //tlsHackIsMainThread = true;
    gRuntimeRunLevel = 3;
    Aurora::Exit::PostLevel(AuThreads::GetThread(), Aurora::Exit::ETriggerLevel::eSafeTermination);
    gRuntimeRunLevel = 4;
    Aurora::RNG::Release();
    Aurora::Async::ShutdownAsync();
    Aurora::Grug::DeinitGrug();
    RuntimeLateClean();
}

static void RuntimeLateClean() // strictly IO flushing + DeinitGrug can sometimes fail under POSIX
{
    Aurora::Console::Exit();
    Aurora::Processes::Deinit();
    Aurora::Exit::DeinitExit();
    Aurora::IO::Deinit();
    gRuntimeRunLevel = 5;
}

namespace Aurora
{
    static bool gRuntimeHasStarted {};

    bool RuntimeIsMainThread()
    {
        return tlsHackIsMainThread;
    }

    AUKN_SYM void RuntimeStart(const RuntimeStartInfo &info)
    {
        gRuntimeConfig = info;
        
        if (gRuntimeHasStarted)
        {
            SysPanic("Do not nest RuntimeStart/RuntimeShutdowns. Modules should respect RuntimeHasStarted()");
        }

        try
        {
            Init();
        }
        catch (...)
        {
            SysPanic("A fatal error occurred during the initialization of Aurora Runtime");
        }

        gRuntimeHasStarted = true;
    }

    AUKN_SYM bool RuntimeHasStarted()
    {
        return gRuntimeHasStarted;
    }

    AUKN_SYM void RuntimeShutdown()
    {
        gRuntimeHasStarted = false;
        Deinit();
    }

    AUKN_SYM void RuntimeSysPump()
    {
        Pump();
    }

    void RuntimeLateClean()
    {
        ::RuntimeLateClean();
    }
}

#if defined(AURORA_PLATFORM_WIN32)

BOOL WINAPI DllMain(
    HINSTANCE hinstDLL,
    DWORD fdwReason,
    LPVOID lpReserved)
{
    if (fdwReason == DLL_PROCESS_ATTACH)
    {
        DisableThreadLibraryCalls(hinstDLL);
    }

    return TRUE;
}

#endif