# frozen_string_literal: true

require 'active_support/core_ext/string'

module Cmdlet
  # String tokenizer will clean up a string so that all sorts of formatted strings can be
  # represented in a consistent fashion
  class StringTokenizer
    # Tokenize string
    # rubocop:disable Metrics/ParameterLists
    def parse(value,
              preserve_case: false,
              compress_prefix_numerals: true,
              compress_suffix_numerals: true,
              separator: '-',
              forced_separator: false)
      return '' if value.nil?

      # Insert space before any lowercaseUppercase
      value = value.gsub(/(?<=[a-z])(?=[A-Z])/, ' ')

      # make sure that any numbers followed by space and then some text has the white space removed
      value = value.gsub(/^(\d*)(\s*)/, '\1') if compress_prefix_numerals

      # Technique1: make sure that trailing space followed by number is compressed
      # NOTE: named groups don't seem to work with \1, \2 etc.
      # ex = /(?<space>[\s]*)(?<number>[\d]*)$/
      # value  =value.sub(ex) { |_| Regexp.last_match[:number] }

      # Technique2: make sure that trailing space followed by number is compressed
      value = value.gsub(/(\s*)(\d*)$/, '\2') if compress_suffix_numerals

      value = value.parameterize(preserve_case: preserve_case, separator: separator) # (separator: ' ')

      value = value.gsub(/[-_]/, separator) if forced_separator

      value
    end
    # rubocop:enable Metrics/ParameterLists
  end
end