module TextAnalysis

# File lib/text_analysis.rb, line 6
def self.analyze_text(text_input)
  result = Result.new

  stop_words = File.readlines("#{ROOT}/data/stop_words/en.txt").map { |word| word.gsub("\n", '') }.inspect
  input_words = text_input.split(/[\s]+/)

  result.total_characters = text_input.length
  result.total_characters_without_whitespaces = text_input.gsub(/\s+/, "").length
  result.total_words = input_words.size
  result.stop_words_found = input_words.select { |word| stop_words.include? word.downcase }.uniq
  result.most_common_words =
      input_words.
          group_by { |word| word.downcase }.
          map { |k,v| { :word => k, :occurences => v.size } }.
          sort_by { |hash| hash[:occurences] }.
          reverse

  result.most_common_non_stop_words =
      input_words.
          reject { |word| stop_words.include? word.downcase }.
          group_by { |word| word.downcase }.
          map { |k,v| { :word => k, :occurences => v.size } }.
          sort_by { |hash| hash[:occurences] }.
          reverse

  result
end