module ApplicationHelper

  # define left menu
  def menu
    ret = ""
    ret += create_menu_li("glyphicon glyphicon-home","Dashboard","/","welcome")
    ret += create_menu_li("glyphicon glyphicon-list-alt","Faktury","/invoices","invoices")
    ret += create_menu_li("glyphicon glyphicon-book","Klienci","/customers","customers")
    ret += create_menu_li("glyphicon glyphicon-shopping-cart","Produkty","/products","products")
    ret += create_menu_li("glyphicon glyphicon-book","Obsługa","/clients","clients")
    ret += create_menu_li("glyphicon glyphicon-cog","Ustawienia","/settings/index","settings")
    return raw(ret)
  end

  # create left menu <li> element
  def create_menu_li(icon, name, link, controller_nmn)
    if controller_name == controller_nmn
      active = " class=\"current\""
    else
      active = ""
    end
    icn = icon.blank? ? "" : "<i class=\"" + icon + "\"></i> "
    "<li#{active}><a href=\"#{link}\">#{icn}#{name}</a></li>"
  end

  # generate errors html
  def errors_to_html(errors )
    ret = '<div class="row"><div class="col-lg-12 col-md-12 panel-danger"><div class="content-box-header panel-heading"><div class="panel-title">'
    ret += I18n.t("activerecord.errors.messages.record_invalid", errors: errors.count)
    ret += '</div></div><div class="content-box-large box-with-header" style="background:#f9dddd"><ul>'
    errors.full_messages.each do |msg|
      ret += "<li>#{msg}</li>"
    end
    ret += "</ul></div></div></div>"
    ret
  end

  # Change decimals to words in PLN
  def decimal_to_word(dec)
    singles = ["", " #{I18n.t('numbers.one')}", " #{I18n.t('numbers.two')}", " #{I18n.t('numbers.three')}", " #{I18n.t('numbers.four')}",
      " #{I18n.t('numbers.five')}", " #{I18n.t('numbers.six')}", " #{I18n.t('numbers.seven')}", " #{I18n.t('numbers.eight')}", " #{I18n.t('numbers.nine')}"]
    teens = ["", " #{I18n.t('numbers.eleven')}", " #{I18n.t('numbers.twelve')}", " #{I18n.t('numbers.thirteen')}", " #{I18n.t('numbers.fourteen')}",
      " #{I18n.t('numbers.fifteen')}", " #{I18n.t('numbers.sixteen')}", " #{I18n.t('numbers.seventeen')}", " #{I18n.t('numbers.eighteen')}", " #{I18n.t('numbers.nineteen')}"]
    tens = ["", " #{I18n.t('numbers.ten')}", " #{I18n.t('numbers.twenty')}", " #{I18n.t('numbers.thirty')}", " #{I18n.t('numbers.fourty')}",
      " #{I18n.t('numbers.fifty')}", " #{I18n.t('numbers.sixty')}", " #{I18n.t('numbers.seventy')}", " #{I18n.t('numbers.eighty')}", " #{I18n.t('numbers.ninety')}"]
    hundreds = ["", " #{I18n.t('numbers.hundred')}", " #{I18n.t('numbers.two_hundred')}", " #{I18n.t('numbers.three_hundred')}", " #{I18n.t('numbers.four_hundred')}",
      " #{I18n.t('numbers.five_hundred')}", " #{I18n.t('numbers.six_hundred')}", " #{I18n.t('numbers.seven_hudred')}", " #{I18n.t('numbers.eight_hundred')}", " #{I18n.t('numbers.nine_hundred')}"]
    groups = Array.new
    groups << ["" ,"" ,""]
    groups << [" #{I18n.t('numbers.thousand')}" ," #{I18n.t('numbers.thousand1')}" ," #{I18n.t('numbers.thousand2')}"]
    groups <<  [" #{I18n.t('numbers.milion')}" ," #{I18n.t('numbers.milion1')}" ," #{I18n.t('numbers.milion2')}"]
    groups <<  [" #{I18n.t('numbers.miliard')}"," #{I18n.t('numbers.miliard1')}"," #{I18n.t('numbers.miliard2')}"]
    groups <<  [" #{I18n.t('numbers.bilion')}" ," #{I18n.t('numbers.bilion1')}" ," #{I18n.t('numbers.bilion2')}"]
    groups <<  [" #{I18n.t('numbers.biliard')}"," #{I18n.t('numbers.biliard1')}"," #{I18n.t('numbers.biliard2')}"]
    groups <<  [" #{I18n.t('numbers.trylion')}"," #{I18n.t('numbers.trylion1')}"," #{I18n.t('numbers.trylion2')}"]

    ret = ""
    number = dec.to_i
    rest = (dec * 100) % 100
    if number == 0
      ret = "#{I18n.t('numbers.zero')}"
    else
      if number < 0
        sign = "#{I18n.t('numbers.minus')}"
        number = -number
      else
        sign = ""
      end
      g = 0
      while number != 0
        s = (number % 1000) / 100
        d = (number % 100) / 10
        j = (number % 10)
        if d == 1 && j > 0
          n = j
          d = 0
          j = 0
        else
          n = 0
        end
        if j == 1 && s+d+n == 0
          k = 0
        elsif j == 2 || j == 3 || j == 4
          k = 1
        else
          k = 2
        end
        ret = hundreds[s] + tens[d] + teens[n] + singles[j] + groups[g][k] + ret
        g = g + 1
        number = number / 1000
      end
    end
    ret = sign + ret
    ret += " PLN #{rest.to_i}/100"
    return ret
  end


end