#pragma once
#include "vde/brep/brep.h"
#include "vde/core/point.h"
#include <vector>
#include <string>

namespace vde::brep {

/// 2D line segment for drawing output
struct DrawSegment {
    double x1, y1, x2, y2;
    bool hidden = false;
};

/// Projection view of a B-Rep body
struct ProjectionView {
    std::string name;
    std::vector<DrawSegment> segments;
    std::vector<DrawSegment> hidden_lines;
    double scale = 1.0;
    
    [[nodiscard]] size_t total_segments() const { return segments.size() + hidden_lines.size(); }
};

/// Generate orthographic projection views (front, top, right)
[[nodiscard]] std::vector<ProjectionView> generate_views(const BrepModel& body);

/// Generate a section view
[[nodiscard]] ProjectionView section_view(const BrepModel& body,
    const core::Point3D& point, const core::Vector3D& normal);

/// Export to DXF R12 format
bool export_dxf(const std::string& filepath, const std::vector<ProjectionView>& views);

/// Dimension type
enum class DimType { Linear, Radius, Diameter };

/// A dimension annotation
struct Dimension {
    DimType type = DimType::Linear;
    double x1 = 0, y1 = 0, x2 = 0, y2 = 0;
    std::string text;
};

/// Auto-generate dimensions for a view
[[nodiscard]] std::vector<Dimension> auto_dimension(const ProjectionView& view);

} // namespace vde::brep