#ifndef __URDE_CTEXTRENDERBUFFER_HPP__
#define __URDE_CTEXTRENDERBUFFER_HPP__

#include "zeus/CColor.hpp"
#include "zeus/CVector2i.hpp"
#include "zeus/CVector2f.hpp"
#include "zeus/CMatrix4f.hpp"
#include "CToken.hpp"
#include "CFontImageDef.hpp"
#include "RetroTypes.hpp"

#include "boo/graphicsdev/IGraphicsDataFactory.hpp"

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

using CTextColor = zeus::CColor;

class CTextRenderBuffer
{
    friend class CGuiTextSupport;
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 */
    struct BooUniform
    {
        zeus::CMatrix4f m_mvp;
        zeus::CColor m_uniformColor;
    };
    boo::IGraphicsBufferD* m_uniBuf;

    struct BooCharacterInstance
    {
        zeus::CVector3f m_pos[4];
        zeus::CVector2f m_uv[4];
        zeus::CColor m_fontColor;
        zeus::CColor m_outlineColor;
        void SetMetrics(const CGlyph& glyph, const zeus::CVector2i& offset);
    };

    struct BooImageInstance
    {
        zeus::CVector3f m_pos[4];
        zeus::CVector2f m_uv[4];
        zeus::CColor m_color;
    };

    struct BooFontCharacters
    {
        TToken<CRasterFont> m_font;
        boo::IGraphicsBufferD* m_instBuf = nullptr;
        boo::IShaderDataBinding* m_dataBinding = nullptr;
        std::vector<BooCharacterInstance> 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;
        boo::IGraphicsBufferD* m_instBuf = nullptr;
        std::vector<boo::IShaderDataBinding*> m_dataBinding;
        BooImageInstance m_imageData;
        bool m_dirty = true;
        BooImage(const CFontImageDef& imgDef, const zeus::CVector2i& offset);
    };
    std::vector<BooImage> m_images;

    boo::GraphicsDataToken m_booToken;

    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 = -1;

    zeus::CColor m_main;
    zeus::CColor m_outline;

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

public:
    CTextRenderBuffer(EMode mode);
#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, wchar_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;
};

}

#endif // __URDE_CTEXTRENDERBUFFER_HPP__