#include "GalaxySDKManager.h"
#include "VrError.h"

GalaxySDKManager::GalaxySDKManager()
    : m_refCount(0)
    , m_bSDKInitialized(false)
{
}

GalaxySDKManager::~GalaxySDKManager()
{
    // 确保SDK被反初始化
    if (m_bSDKInitialized) {
#ifdef _WIN32
        try {
            IGXFactory::GetInstance().Uninit();
        }
        catch (...) {
            // 忽略析构函数中的异常
        }
#else
        GXCloseLib();
#endif
        m_bSDKInitialized = false;
    }
}

GalaxySDKManager& GalaxySDKManager::GetInstance()
{
    static GalaxySDKManager instance;
    return instance;
}

int GalaxySDKManager::InitSDK()
{
    std::lock_guard<std::mutex> lock(m_mutex);

    // 增加引用计数
    m_refCount++;

    // 如果已经初始化，直接返回成功
    if (m_bSDKInitialized) {
        return SUCCESS;
    }

    // 执行SDK初始化
#ifdef _WIN32
    // Windows 平台：使用 C++ API
    try {
        IGXFactory::GetInstance().Init();
        m_bSDKInitialized = true;
        return SUCCESS;
    }
    catch (CGalaxyException& e) {
        m_refCount--;  // 初始化失败，减少引用计数
        return static_cast<int>(e.GetErrorCode());
    }
    catch (...) {
        m_refCount--;  // 初始化失败，减少引用计数
        return ERR_CODE(DEV_OPEN_ERR);
    }
#else
    // Linux/ARM 平台：使用 C API
    GX_STATUS status = GXInitLib();
    if (status == GX_STATUS_SUCCESS) {
        m_bSDKInitialized = true;
        return SUCCESS;
    }
    m_refCount--;  // 初始化失败，减少引用计数
    return static_cast<int>(status);
#endif
}

int GalaxySDKManager::UninitSDK()
{
    std::lock_guard<std::mutex> lock(m_mutex);

    // 减少引用计数
    if (m_refCount > 0) {
        m_refCount--;
    }

    // 只有当引用计数为0时才真正反初始化
    if (m_refCount == 0 && m_bSDKInitialized) {
#ifdef _WIN32
        // Windows 平台：使用 C++ API
        try {
            IGXFactory::GetInstance().Uninit();
            m_bSDKInitialized = false;
            return SUCCESS;
        }
        catch (CGalaxyException& e) {
            return static_cast<int>(e.GetErrorCode());
        }
        catch (...) {
            return ERR_CODE(DEV_CLOSE_ERR);
        }
#else
        // Linux/ARM 平台：使用 C API
        GX_STATUS status = GXCloseLib();
        if (status == GX_STATUS_SUCCESS) {
            m_bSDKInitialized = false;
            return SUCCESS;
        }
        return static_cast<int>(status);
#endif
    }

    return SUCCESS;
}

bool GalaxySDKManager::IsSDKInitialized() const
{
    return m_bSDKInitialized;
}

int GalaxySDKManager::GetRefCount() const
{
    return m_refCount.load();
}