// CNN v2 Effect - Parametric Static Features
// Multi-pass post-processing with 7D feature input

#pragma once
#include "gpu/effect.h"
#include <vector>

class CNNv2Effect : public PostProcessEffect {
public:
  explicit CNNv2Effect(const GpuContext& ctx);
  ~CNNv2Effect();

  void init(MainSequence* demo) override;
  void resize(int width, int height) override;
  void compute(WGPUCommandEncoder encoder,
               const CommonPostProcessUniforms& uniforms) override;
  void render(WGPURenderPassEncoder pass,
              const CommonPostProcessUniforms& uniforms) override;
  void update_bind_group(WGPUTextureView input_view) override;

private:
  struct LayerInfo {
    uint32_t kernel_size;
    uint32_t in_channels;
    uint32_t out_channels;
    uint32_t weight_offset;
    uint32_t weight_count;
  };

  struct LayerParams {
    uint32_t kernel_size;
    uint32_t in_channels;
    uint32_t out_channels;
    uint32_t weight_offset;
    uint32_t is_output_layer;
  };

  void create_textures();
  void create_pipelines();
  void load_weights();
  void cleanup();

  // Static features compute
  WGPUComputePipeline static_pipeline_;
  WGPUBindGroup static_bind_group_;
  WGPUTexture static_features_tex_;
  WGPUTextureView static_features_view_;

  // CNN layers (storage buffer architecture)
  WGPUComputePipeline layer_pipeline_;      // Single pipeline for all layers
  WGPUBuffer weights_buffer_;               // Storage buffer for weights
  WGPUBuffer layer_params_buffer_;          // Uniform buffer for per-layer params
  std::vector<LayerInfo> layer_info_;       // Layer metadata
  std::vector<WGPUBindGroup> layer_bind_groups_;  // Per-layer bind groups
  std::vector<WGPUTexture> layer_textures_;       // Ping-pong buffers
  std::vector<WGPUTextureView> layer_views_;

  // Input mips
  WGPUTexture input_mip_tex_;
  WGPUTextureView input_mip_view_[3];
  WGPUTextureView current_input_view_;

  bool initialized_;
};