# frozen_string_literal: true

module Ezdoc
  class Document
    include Builder

    attr_reader :nodes

    def self.create(path, &block)
      doc = new
      block.call(doc)
      doc.save(path)
      doc
    end

    def initialize
      @nodes = []
      @format_stack = []
      @current_target = nil
      @current_list = nil
      @current_table = nil
      @current_row = nil
      @num_id_counter = 0
      @images = {}
    end

    def save(path)
      Package.new(self).save(path)
    end

    def lists
      @nodes.select { |n| n.is_a?(Nodes::List) }
    end

    def images
      @images.values
    end

    def register_image(path, width: nil, height: nil)
      return @images[path] if @images[path]

      rid = next_image_rid
      width_emu, height_emu = ImageDimensions.calculate_emus(path, width: width, height: height)
      image = Nodes::Image.new(path, rid: rid, width_emu: width_emu, height_emu: height_emu)
      @images[path] = image
      image
    end

    private

    def next_image_rid
      base = lists.any? ? 2 : 1
      "rId#{base + @images.size}"
    end
  end
end