# frozen_string_literal: true

module Triangular
  class Polyline
    attr_accessor :lines

    def initialize(lines)
      @lines = lines
    end

    def to_svg(width, height, units, x_offset = 0, y_offset = 0)
      output =  "<?xml version=\"1.0\" standalone=\"no\"?>\n"
      output += "<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n"
      output += "<svg x=\"0\" y=\"0\" width=\"#{width}#{Units.svg_name(units)}\" height=\"#{height}#{Units.svg_name(units)}\" viewBox=\"0 0 #{width} #{height}\" xmlns=\"http://www.w3.org/2000/svg\" version=\"1.1\">\n"
      output += "  <g transform=\"translate(#{x_offset}#{Units.svg_name(units)},#{y_offset}#{Units.svg_name(units)})\">\n"

      @lines.each do |line|
        output += "    #{line.to_svg_path(units)}\n"
      end

      output += "  </g>\n"
      output += '</svg>'
    end
  end
end