/*
  ==============================================================================

    FilterView.h
    Created: 16 Jan 2026 5:06:31pm
    Author:  esca

  ==============================================================================
*/

#pragma once

#include "juce_gui_basics/juce_gui_basics.h"
#include "juce_opengl/juce_opengl.h"
#include <JuceHeader.h>
#include "OpenGLUtils.h"
#include <string>

#define CRUSHVIEW_SAMPLECOUNT 200

#define VERTEXSHADERFILTERFILL R"(placeholder)"

#define FRAGSHADERFILTERFILL R"(placeholder)"

#define VERTEXSHADERFILTER R"(placeholder)"

#define FRAGSHADERFILTER R"(placeholder)"


class FilterView  : public juce::Component, public juce::OpenGLRenderer
{
public:
  FilterView();
  ~FilterView() override;

  void renderFilter();

  void newOpenGLContextCreated() override;
  void renderOpenGL() override;
  void openGLContextClosing() override;

  void paint (juce::Graphics&) override;
  void resized() override;

private:
  JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (FilterView)

  bool isLowPass;
  float cutoff;
  float mix;

  juce::OpenGLContext ctx;
  juce::OpenGLPixelFormat antialiasing;

  std::vector<Vertex> filterVertices;
  std::vector<unsigned int> filterIndices;

  std::vector<Vertex> filterBackgroundVertices;
  std::vector<unsigned int> filterBackgroundIndices;

  std::vector<VertexTexture> backgroundVertices;
  std::vector<unsigned int> backgroundIndices;

  juce::ComponentListener listener;

  GLuint vboFilter;
  GLuint iboFilter;

  GLuint vboFilterFill;
  GLuint iboFilterFill;

  GLuint vboBackground;
  GLuint iboBackground;

  std::string vertexShaderFilter;
  std::string fragmentShaderFilter;

  std::string vertexShaderFilterFill;
  std::string fragmentShaderFilterFill;

  std::string vertexShaderBackground;
  std::string fragmentShaderBackground;

  std::unique_ptr<juce::OpenGLShaderProgram> shaderProgramFilter;
  std::unique_ptr<juce::OpenGLShaderProgram> shaderProgramFilterFill;
  std::unique_ptr<juce::OpenGLShaderProgram> shaderProgramBackground;

  juce::Image background;
  juce::OpenGLTexture bgTexture;

};