# frozen_string_literal: true

module IEV
  module Utilities
    SIMG_PATH_REGEX = "<simg .*\\/\\$file\\/([\\d\\-\\w\.]+)>"
    FIGURE_ONE_REGEX =
      "<p><b>\\s*Figure\\s+(\\d)\\s+[–-]\\s+(.+)\\s*<\\/b>(<\\/p>)?"
    FIGURE_TWO_REGEX = "#{FIGURE_ONE_REGEX}\\s*#{FIGURE_ONE_REGEX}"
    IMAGE_PATH_PREFIX = "image::/assets/images/parts"

    def parse_anchor_tag(text, term_domain)
      if text
        # Convert IEV term references
        # Convert href links
        # Need to take care of this pattern:
        #  `inverse de la <a href="IEV103-06-01">période<a>`
        text.gsub(
          /<a href="?(IEV)\s*(\d\d\d-\d\d-\d\d\d?)"?>(.*?)<\/?a>/,
          '{{\3, \1:\2}}',
        ).gsub(
          /<a href="?\s*(\d\d\d-\d\d-\d\d\d?)"?>(.*?)<\/?a>/,
          '{{\3, IEV:\2}}',
        ).gsub(
          # To handle <a> tags without ending tag like
          #  `Voir <a href=IEV103-05-21>IEV 103-05-21`
          #  for concept '702-03-11' in `fr`
          /<a href="?(IEV)?\s*(\d\d\d-\d\d-\d\d\d?)"?>(.*?)$/,
          '{{\3, IEV:\2}}',
        ).gsub(
          /<a href="?([^<>]*?)"?>(.*?)<\/a>/,
          '\1[\2]',
        ).gsub(
          Regexp.new([SIMG_PATH_REGEX, "\\s*", FIGURE_TWO_REGEX].join),
          "#{IMAGE_PATH_PREFIX}/#{term_domain}/\\1[Figure \\2 - \\3; \\6]",
        ).gsub(
          Regexp.new([SIMG_PATH_REGEX, "\\s*", FIGURE_ONE_REGEX].join),
          "#{IMAGE_PATH_PREFIX}/#{term_domain}/\\1[Figure \\2 - \\3]",
        ).gsub(
          /<img\s+([^<>]+?)\s*>/,
          "#{IMAGE_PATH_PREFIX}/#{term_domain}/\\1[]",
        ).gsub(
          /<br>/,
          "\n",
        ).gsub(
          /<b>(.*?)<\/b>/,
          "*\\1*",
        )
      end
    end

    def replace_newlines(input)
      input.gsub('\n', "\n\n")
        .gsub(/<[pbr]+>/, "\n\n")
        .gsub(/\s*\n[\n\s]+/, "\n\n")
        .strip
    end
  end
end