# encoding: utf-8
module Octopress
  module Date
    # Русская локализация:
    MONTHNAMES_RU = [nil, "Января", "Февраля", "Марта", "Апреля", "Мая", "Июня", "Июля", "Августа", "Сентября", "Октября", "Ноября", "Декабря" ]
    ABBR_MONTHNAMES_RU = [nil, "Янв", "Фев", "Мар", "Апр", "Май", "Июн", "Июл", "Авг", "Сен", "Окт", "Ноя", "Дек" ]
    DAYNAMES_RU = [ "Воскресенье", "Понедельник", "Вторник", "Среда", "Четверг", "Пятница", "Суббота" ]
    ABBR_DAYNAMES_RU = [ "Вс", "Пн", "Вт", "Ср", "Чт", "Пт", "Сб" ]

    # Returns a datetime if the input is a string
    def datetime(date)
      if date.class == String
        date = Time.parse(date)
      end
      date
    end

    # В _config.yml должно быть задано: date_format: ordinal 
    def ordinalize(date)
    # Задаем наш формат выдачи даты    
    format_date(date, "%e %B %Y, %H:%M, %a") # 20 Авг 2019
    end

    # Formats date either as ordinal or by given date format
    # Adds %o as ordinal representation of the day
    def format_date(date, format)
      date = datetime(date)
      if format.nil? || format.empty? || format == "ordinal"
        date_formatted = ordinalize(date)
      else
        format.gsub!(/%a/, ABBR_DAYNAMES_RU[date.wday])
        format.gsub!(/%A/, DAYNAMES_RU[date.wday])
        format.gsub!(/%b/, ABBR_MONTHNAMES_RU[date.mon])
        format.gsub!(/%B/, MONTHNAMES_RU[date.mon])
        date_formatted = date.strftime(format)
      end
      date_formatted
    end

  end
end

module Jekyll

  class Post
    include Octopress::Date

      def to_liquid(attrs = nil)
        date_format = self.site.config['date_format']
        new_datas = {
          "title"             => self.data['title'] || self.slug.split('-').select {|w| w.capitalize! || w }.join(' '),
          "url"               => self.url,
          "date"              => self.date,
          # Monkey patch
          "date_formatted"    => format_date(self.date, date_format),
          "updated_formatted" => self.data.has_key?('updated') ? format_date(self.data['updated'], date_format) : nil,
          "id"                => self.id,
          "categories"        => self.categories,
          "next"              => self.next,
          "previous"          => self.previous,
          "tags"              => self.tags,
          "content"           => self.content }
        Utils.deep_merge_hashes(self.data, new_datas)
      end
  end

  class Page
    include Octopress::Date

    # Initialize a new Page.
    #
    # site - The Site object.
    # base - The String path to the source.
    # dir  - The String path between the source and the file.
    # name - The String filename of the file.
    def initialize(site, base, dir, name)
      @site = site
      @base = base
      @dir  = dir
      @name = name

      self.process(name)
      self.read_yaml(File.join(base, dir), name)
      # Monkey patch
      date_format = self.site.config['date_format']
      self.data['date_formatted']    = format_date(self.data['date'], date_format) if self.data.has_key?('date')
      self.data['updated_formatted'] = format_date(self.data['updated'], date_format) if self.data.has_key?('updated')
    end
  end

  module Filters
    include Octopress::Date
    def date_ru(date, format)
      format_date(date, format)
    end
  end

end