module Cuker
  module IModel
    extend Interface
    method :initialize
    method :write_title
    method :write_new_row

    method :make_new_file
    method :write_new_sheet
  end


  class AbstractModel
    include LoggerSetup
    include IModel

    # @return [Array] writable rows of title
    #   Defaults to []
    attr_accessor :title

    # @return [Array] writable array of rows of data
    #   Defaults to []
    attr_accessor :data

    # https://cucumber.io/docs/gherkin/reference/#keywords
    FEATURE = 'Feature'
    BACKGROUND = 'Background'

    SCENARIO = 'Scenario'
    SCENARIO_OUTLINE = 'Scenario Outline'
    EXAMPLES = 'Examples'

    GIVEN = 'Given'
    WHEN = 'When'
    THEN = 'Then'
    AND = 'And'
    BUT = 'But'

    def initialize _model_input = []
      init_logger
      @title = []
      @data = []
    end


    # utility methods
    # used by any model

    def name_merge hsh
      str = ""
      @log.debug "name merge for #{hsh}"
      str += hsh[:name].strip.force_encoding("UTF-8") if hsh[:name]
      str += "\n#{hsh[:description].strip.force_encoding("UTF-8")}" if hsh[:description]
      str
    end

    def union feat_tags, tags
      (feat_tags.to_set | tags.to_set).to_a # union
    end

    # @param sep [String] seperator around the array objects
    # @return [String] with an array surrounded by the sep
    def surround ary, sep
      # "#{sep}#{ary.is_a?(Array)? ary.join(sep) : ary}#{sep}"
      # "#{sep}#{ary.join(sep)}#{sep}"
      simple_surround ary.join(sep), sep
    end

    def simple_surround item, sep, r_sep = nil
      "#{sep}#{item}#{r_sep || sep}"
    end

    # def padded_surround item, sep, pad
    #   "#{sep}#{pad}#{item}#{pad}#{sep}"
    # end

    def get_tags(hsh)
      if hsh[:tags] and hsh[:tags].any?
        hsh[:tags].map {|tag| tag[:name]}
      else
        @log.debug "No Tags found in #{hsh[:keyword]} @ #{@file_path}"
        []
      end
    end


    def get_values_ary ary_of_hshs
      get_item_ary ary_of_hshs, :values
    end

    def get_keys_ary ary_of_hshs
      get_item_ary ary_of_hshs, :keys
    end

    private

    def get_item_ary ary_of_hshs, item
      ary_of_hshs.map(&item).flatten
    end

  end
end