#pragma once

#include <renderer/rhi/rhi.h>
#include <glad/glad.h>
#include <vector>

namespace extra2d {

// 前向声明
class GLTexture;

/**
 * @brief OpenGL 帧缓冲实现
 */
class GLFramebuffer : public RHIFramebuffer {
public:
    GLFramebuffer();
    explicit GLFramebuffer(const RenderPassDesc& desc);
    ~GLFramebuffer() override;

    bool create();
    void destroy();

    void bind() override;
    void unbind() override;

    uint32_t getColorAttachmentCount() const override;
    TextureHandle getColorAttachment(uint32_t index) const override;
    TextureHandle getDepthStencilAttachment() const override;

    uint32_t getWidth() const override { return width_; }
    uint32_t getHeight() const override { return height_; }

    bool hasDepthStencil() const override;
    bool isValid() const override;
    bool isDefault() const override;

    void setSize(uint32_t width, uint32_t height);
    GLuint getGLFramebuffer() const { return framebuffer_; }

    const RenderPassDesc& getDesc() const { return desc_; }
    void clear(ClearFlags flags, const Color& color, float depth, uint8_t stencil);

private:
    RenderPassDesc desc_;
    GLuint framebuffer_;
    uint32_t width_;
    uint32_t height_;
    std::vector<std::unique_ptr<GLTexture>> colorAttachments_;
    std::unique_ptr<GLTexture> depthStencilAttachment_;
};

} // namespace extra2d