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#include "rhiresourcemanagers_p.h"

QT_BEGIN_NAMESPACE

namespace Qt3DRender {

namespace Render {

namespace Rhi {

RHIResourceManagers::RHIResourceManagers()
    : m_rhiBufferManager(new RHIBufferManager()),
      m_rhiShaderManager(new RHIShaderManager()),
      m_rhiTextureManager(new RHITextureManager()),
      m_rhiRenderTargetManager(new RHIRenderTargetManager()),
      m_rhiGraphicsPipelineManager(new RHIGraphicsPipelineManager())
{
}

RHIResourceManagers::~RHIResourceManagers()
{
    delete m_rhiTextureManager;
    delete m_rhiShaderManager;
    delete m_rhiBufferManager;
    delete m_rhiRenderTargetManager;
    delete m_rhiGraphicsPipelineManager;
}

void RHIResourceManagers::releaseAllResources()
{
    auto releaseAll = [](auto *manager) noexcept {
        // Release all resources reference by a key
        manager->releaseAllResources();
        // Release remaining resources which were allocated manually but had no key
        const auto handles = manager->activeHandles();
        for (const auto &handle : handles) {
            manager->release(handle);
        }
    };

    releaseAll(m_rhiTextureManager);
    releaseAll(m_rhiBufferManager);
    // releaseAll(m_rhiShaderManager);
    releaseAll(m_rhiRenderTargetManager);
    releaseAll(m_rhiGraphicsPipelineManager);
}

int RHIGraphicsPipelineManager::getIdForAttributeVec(const std::vector<AttributeInfo> &attributesInfo)
{
    auto it = std::find(m_attributesInfo.begin(),
                        m_attributesInfo.end(),
                        attributesInfo);
    if (it == m_attributesInfo.end()) {
        m_attributesInfo.emplace_back(attributesInfo);
        return m_attributesInfo.size() - 1;
    }
    return std::distance(m_attributesInfo.begin(), it);
}


} // Rhi

} // Render

} // Qt3DRender

QT_END_NAMESPACE