#include "Rendering/CameraRenderer.h"

#include "Rendering/Pipelines/BuiltinForwardPipeline.h"
#include "Rendering/RenderSurface.h"
#include "Scene/Scene.h"

namespace XCEngine {
namespace Rendering {

CameraRenderer::CameraRenderer()
    : m_pipeline(std::make_unique<Pipelines::BuiltinForwardPipeline>()) {
}

CameraRenderer::CameraRenderer(std::unique_ptr<RenderPipeline> pipeline)
    : m_pipeline(std::move(pipeline)) {
    if (!m_pipeline) {
        m_pipeline = std::make_unique<Pipelines::BuiltinForwardPipeline>();
    }
}

CameraRenderer::~CameraRenderer() {
    if (m_pipeline) {
        m_pipeline->Shutdown();
    }
}

void CameraRenderer::SetPipeline(std::unique_ptr<RenderPipeline> pipeline) {
    if (m_pipeline) {
        m_pipeline->Shutdown();
    }

    m_pipeline = std::move(pipeline);
    if (!m_pipeline) {
        m_pipeline = std::make_unique<Pipelines::BuiltinForwardPipeline>();
    }
}

bool CameraRenderer::Render(
    const CameraRenderRequest& request) {
    if (!request.IsValid() || m_pipeline == nullptr) {
        return false;
    }

    RenderSceneData sceneData = m_sceneExtractor.ExtractForCamera(
        *request.scene,
        *request.camera,
        request.surface.GetWidth(),
        request.surface.GetHeight());
    if (!sceneData.HasCamera()) {
        return false;
    }

    sceneData.cameraData.clearFlags = request.clearFlags;
    return m_pipeline->Render(request.context, request.surface, sceneData);
}

} // namespace Rendering
} // namespace XCEngine