#pragma once

#include <utility>
#include <vector>

#include "Runtime/CToken.hpp"
#include "Runtime/RetroTypes.hpp"
#include "Runtime/Graphics/Shaders/CTextSupportShader.hpp"
#include "Runtime/GuiSys/CFontImageDef.hpp"
#include "Runtime/GuiSys/CGuiWidget.hpp"

#include <boo/graphicsdev/IGraphicsDataFactory.hpp>

#include <hecl/UniformBufferPool.hpp>
#include <hecl/VertexBufferPool.hpp>

#include <zeus/CColor.hpp>
#include <zeus/CMatrix4f.hpp>
#include <zeus/CVector2f.hpp>
#include <zeus/CVector2i.hpp>

namespace urde {
class CGlyph;
class CGraphicsPalette;
class CRasterFont;
class CTextExecuteBuffer;

using CTextColor = zeus::CColor;

class CTextRenderBuffer {
  friend class CGuiTextSupport;
  friend class CTextSupportShader;

public:
  enum class Command { CharacterRender, ImageRender, FontChange, PaletteChange };
#if 0
    struct Primitive
    {
        CTextColor x0_color1;
        Command x4_command;
        u16 x8_xPos;
        u16 xa_zPos;
        wchar_t xc_glyph;
        u8 xe_imageIndex;
    };
#endif
  enum class EMode { AllocTally, BufferFill };

private:
  EMode x0_mode;
#if 0
    std::vector<TToken<CRasterFont>> x4_fonts;
    std::vector<CFontImageDef> x14_images;
    std::vector<int> x24_primOffsets;
    std::vector<char> x34_bytecode;
    u32 x44_blobSize = 0;
    u32 x48_curBytecodeOffset = 0;
    u8 x4c_activeFont;
    u32 x50_paletteCount = 0;
    std::array<std::unique_ptr<CGraphicsPalette>, 64> x54_palettes;
    u32 x254_nextPalette = 0;

#else
  /* Boo-specific text-rendering functionality */
  hecl::UniformBufferPool<CTextSupportShader::Uniform>::Token m_uniBuf;
  hecl::UniformBufferPool<CTextSupportShader::Uniform>::Token m_uniBuf2;

  struct BooFontCharacters {
    TLockedToken<CRasterFont> m_font;
    hecl::VertexBufferPool<CTextSupportShader::CharacterInstance>::Token m_instBuf;
    boo::ObjToken<boo::IShaderDataBinding> m_dataBinding;
    boo::ObjToken<boo::IShaderDataBinding> m_dataBinding2;
    std::vector<CTextSupportShader::CharacterInstance> m_charData;
    u32 m_charCount = 0;
    bool m_dirty = true;
    BooFontCharacters(const CToken& token) : m_font(token) {}
  };
  std::vector<BooFontCharacters> m_fontCharacters;

  struct BooImage {
    CFontImageDef m_imageDef;
    hecl::VertexBufferPool<CTextSupportShader::ImageInstance>::Token m_instBuf;
    std::vector<boo::ObjToken<boo::IShaderDataBinding>> m_dataBinding;
    std::vector<boo::ObjToken<boo::IShaderDataBinding>> m_dataBinding2;
    CTextSupportShader::ImageInstance m_imageData;
    bool m_dirty = true;
    BooImage(const CFontImageDef& imgDef, const zeus::CVector2i& offset);
  };
  std::vector<BooImage> m_images;

  struct BooPrimitiveMark {
    Command m_cmd;
    u32 m_bindIdx;
    u32 m_instIdx;
    void SetOpacity(CTextRenderBuffer& rb, float opacity);
  };
  std::vector<BooPrimitiveMark> m_primitiveMarks;
  u32 m_imagesCount = 0;
  u32 m_activeFontCh = UINT32_MAX;

  zeus::CColor m_main;
  zeus::CColor m_outline = zeus::skBlack;

  CGuiWidget::EGuiModelDrawFlags m_drawFlags;

  bool m_committed = false;
  void CommitResources();
#endif

public:
  CTextRenderBuffer(EMode mode, CGuiWidget::EGuiModelDrawFlags df);
#if 0
    void SetPrimitive(const Primitive&, int);
    Primitive GetPrimitive(int) const;
    void GetOutStream();
    void VerifyBuffer();
    int GetMatchingPaletteIndex(const CGraphicsPalette& palette);
    CGraphicsPalette* GetNextAvailablePalette();
    void AddPaletteChange(const CGraphicsPalette& palette);
#else
  void SetPrimitiveOpacity(int idx, float opacity);
  u32 GetPrimitiveCount() const { return m_primitiveMarks.size(); }
#endif
  void SetMode(EMode mode);
  void Render(const zeus::CColor& col, float) const;
  void AddImage(const zeus::CVector2i& offset, const CFontImageDef& image);
  void AddCharacter(const zeus::CVector2i& offset, char16_t ch, const zeus::CColor& color);
  void AddPaletteChange(const zeus::CColor& main, const zeus::CColor& outline);
  void AddFontChange(const TToken<CRasterFont>& font);

  bool HasSpaceAvailable(const zeus::CVector2i& origin, const zeus::CVector2i& extent) const;
  std::pair<zeus::CVector2i, zeus::CVector2i> AccumulateTextBounds() const;
};

} // namespace urde