module Roroacms
  module ViewHelper

    # The view helper contains all of the functions that the views
    # will use in order to display the contents of either the content
    # or format other data

    # Returns a nested list of the comments
    # Params:
    # +post_id+:: id of the post that you want to get comments for

    def display_comments_loop(post_id = nil)

      # get the comments by the post id or the globalized @content record
      comments = 
        if !post_id.nil?
          Comment.where(:post_id => post_id)
        else
          Comment.where(:post_id => @content.id, :comment_approved => 'Y', :is_spam => 'N')
        end

      if comments.size > 0
        html = "<h3 id='comments-title'>#{comments.count}" + I18n.t("helpers.view_helper.display_comments_loop.response") + " #{obtain_the_title}</h3>"
      end

      html = nested_comments obtain_comments.arrange(:order => 'created_at ASC')

      render :inline => html.html_safe

    end


    # Return the author information of the articles
    # Params:
    # +raw+:: if set to true you will just get the author information in a raw ActiveRcord format

    def display_author_information(raw = false)

      admin = Admin.find_by_id(@content.admin_id)
      if raw
        admin
      else
        unless @admin.blank?
          html = "<div id='author-info'>
  					<div id='author-description'>
  						<h2>#{@admin.first_name} #{@admin.last_name}</h2>
  						<p>#{@admin.description}</p>						
  					</div>
  				</div>"

          render :inline => html.html_safe
        end
      end

    end


    # Returns the html for the comments tree of a post
    # Params:
    # +messages+:: all of the messages for the post

    def nested_comments(messages)
      messages.map do |message, sub_messages|
        @comment = message
        render('roroacms/admin/partials/comment') + content_tag(:div, nested_comments(sub_messages), :class => "nested_comments")
      end.join.html_safe
    end

    def admin_nested_comments(messages)
      messages.map do |message, sub_messages|
        @comment = message
        render('roroacms/admin/partials/admin_comment') + content_tag(:ul, admin_nested_comments(sub_messages), :class => "list-group nested_comments")
      end.join.html_safe
    end


    # Returns a list of the given data
    # Params:
    # +arr+:: array that you want to list through to create the list

    def li_loop(arr)

      html = '<ul>'
      arr.each do |k, v|
        html += "<li><a href='#{site_url}#{k}'>#{v}</a></li>"
      end
      html += '</ul>'

      render :inline => html

    end

    # Returns a list of the given data, but puts children records in the loop
    # Params:
    # +arr+:: array that you want to list through to create the list

    def li_loop_for_terms(arr, term_type, initial = 'initial')

      article_url = Setting.get('articles_slug')

      html = '<ul class="' + initial + '">'
      arr.each do |key, val|
        html += "<li><a href='#{site_url}#{article_url}/#{term_type}#{key.structured_url}'>#{key.name}</a>"
        html += li_loop_for_terms(val, term_type, 'sub') unless val.blank?
      end
      html += '</ul>'

      render :inline => html

    end


    # Returns a sub string of the month name
    # Params:
    # +str+:: integer of the month

    def get_date_name_by_number(str)
      case str
      when  1 then I18n.t("helpers.view_helper.get_date_name_by_number.date_1")
      when  2 then I18n.t("helpers.view_helper.get_date_name_by_number.date_2")
      when  3 then I18n.t("helpers.view_helper.get_date_name_by_number.date_3")
      when  4 then I18n.t("helpers.view_helper.get_date_name_by_number.date_4")
      when  5 then I18n.t("helpers.view_helper.get_date_name_by_number.date_5")
      when  6 then I18n.t("helpers.view_helper.get_date_name_by_number.date_6")
      when  7 then I18n.t("helpers.view_helper.get_date_name_by_number.date_7")
      when  8 then I18n.t("helpers.view_helper.get_date_name_by_number.date_8")
      when  9 then I18n.t("helpers.view_helper.get_date_name_by_number.date_9")
      when 10 then I18n.t("helpers.view_helper.get_date_name_by_number.date_10")
      when 11 then I18n.t("helpers.view_helper.get_date_name_by_number.date_11")
      when 12 then I18n.t("helpers.view_helper.get_date_name_by_number.date_12")
      end
    end


    # returns a boolean as to wether the template file actually exists
    # Params:
    # +name+:: the name of the template file that you want to check exists

    def view_file_exists?(name)
      File.exists?("#{Rails.root}/app/views/themes/#{current_theme}/template-#{name}." + get_theme_ext )
    end


    # get current theme

    def current_theme
      Setting.get('theme_folder')
    end


    # returns a full url to the file that you want to render from the theme file.
    # example usage would be: <%= render theme_url 'sidebar' %>
    # Params:
    # +append+:: the name of the file that you want to render

    def theme_url(append)
      "themes/#{current_theme}/#{append}"
    end

    # displays the header.  + get_theme_ext template in the theme if the file exists

    def display_header
      render :template => "/themes/#{current_theme}/header." + get_theme_ext  if File.exists?("#{Rails.root}/app/views/themes/#{current_theme}/header." + get_theme_ext )
    end

    # displays the header. + get_theme_ext template in the theme if the file exists

    def display_footer
      render :template => "themes/#{current_theme}/footer." + get_theme_ext  if File.exists?("#{Rails.root}/app/views/themes/#{current_theme}/footer." + get_theme_ext )
    end

  end
end