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#include "deimos/core/os.h"
#include "deimos/core/api_registry.h"
#include "deimos/core/allocator.h"

#define WIN32_LEAN_AND_MEAN
#include <Windows.h>

namespace deimos
{

class Win32OsConsoleApiImpl : public OsConsoleApi
{
    HANDLE m_stdout;
    HANDLE m_stderr;

    constexpr HANDLE Handle(OsConsoleType type) const
    {
        switch (type)
        {
            using enum OsConsoleType;
            case kStdOut: return m_stdout;
            case kStdErr: return m_stderr;
        }
    }

public:
    Win32OsConsoleApiImpl() :
        m_stdout{::GetStdHandle(STD_OUTPUT_HANDLE)},
        m_stderr{::GetStdHandle(STD_ERROR_HANDLE)}
    {}

    void Write(OsConsoleType type, Span<const std::byte> data) override
    {
        ::WriteConsoleA(Handle(type), data.data(), (DWORD)data.size(), nullptr, nullptr);
    }
};

class Win32OsApiImpl : public OsApi
{
    Win32OsConsoleApiImpl m_console_api;

public:
    Win32OsApiImpl()
    {
        console = &m_console_api;
    }
};

void RegisterOsApi(ApiRegistry* api_registry)
{
    auto* allocator_api = api_registry->Get<AllocatorApi>();
    auto* os_api = allocator_api->system->New<Win32OsApiImpl>();
    api_registry->Set(os_api);
}

} // namespace deimos