#pragma once

#include "pdfengine/edit_session.hpp"
#include "fonts/shaping/hb_shaper.hpp"
#include "fonts/face/font_face.hpp"
#include <string>
#include <vector>
#include <memory>

namespace pdfengine::text {

struct LayoutConstraints {
    double columnLeft = 0.0;
    double columnRight = 0.0;
    double firstBaselineY = 0.0;
    double leading = 0.0;
    std::string align = "left";
    double hangingIndent = 0.0;
};

class LineBreaker {
public:
    LineBreaker(const LayoutConstraints& constraints);
    
    // Processes a stream of shaped glyphs and applies line breaking
    void ProcessRun(
        const std::vector<fonts::ShapedGlyph>& shapedGlyphs,
        const std::string& runText,
        double fontSize,
        const fonts::FontFace& face,
        double scale
    );

    // Finalizes the layout and populates the LayoutResult
    void Finalize(LayoutResult& outLayout);

private:
    LayoutConstraints constraints_;
    double currentX_;
    double currentY_;
    
    // Internal state for word wrapping
    std::vector<GlyphInfo> currentLineGlyphs_;
    std::vector<LineInfo> finishedLines_;
    std::vector<GlyphInfo> allGlyphs_;

    void CommitLine();
};

class TextLayoutEngine {
public:
    TextLayoutEngine();
    
    // Computes layout for a given text run (simplified for single font for now)
    LayoutResult ComputeLayout(
        const std::string& text,
        const LayoutConstraints& constraints,
        fonts::FontFace& fontFace,
        double fontSize
    );

private:
    fonts::HbShaper shaper_;
};

} // namespace pdfengine::text