# -*- encoding : utf-8 -*-
module PublicBodyHelper

  # Public: The reasons a request can't be made to a PublicBody
  # The returned reasons are ordered by priority. For example, if the body no
  # longer exists there is no reason to ask for its contact details if we don't
  # have an email for it.
  #
  # public_body - Instance of a PublicBody
  #
  # Returns an Array
  def public_body_not_requestable_reasons(public_body)
    reasons = []

    if public_body.defunct?
      reasons.push _('This authority no longer exists, so you cannot make a request to it.')
    end

    if public_body.not_apply?
      reasons.push _('Freedom of Information law does not apply to this authority, so you cannot make a request to it.')
    end

    unless public_body.has_request_email?
      # Make the authority appear requestable to encourage users to help find
      # the authority's email address
      msg = link_to _("Make a request to this authority"),
                      new_request_to_body_path(:url_name => public_body.url_name),
                      :class => "link_button_green"

      reasons.push(msg)
    end

    reasons.compact
  end

  # Use tags to describe what type of authority a PublicBody is.
  #
  # public_body - Instance of a PublicBody
  #
  # Returns a String
  def type_of_authority(public_body)
      categories = PublicBodyCategory.
                     where(:category_tag => public_body.tag_string.split)

      types = categories.each_with_index.map do |category, index|
          desc = category.description
          if index.zero?
              desc = desc.sub(/\S/) { |m| Unicode.upcase(m) }
          end
          link_to(desc, list_public_bodies_path(category.category_tag))
      end

      if types.any?
          types.to_sentence(:last_word_connector => ' and ').html_safe
      else
          _("A public authority")
      end
  end

end