module SanteyBlog
  module ViewHelper
    include ActionView::Helpers
    
  # HTML sanitizer configuration
  SANITIZER_CONFIG = {
    :elements => [
        'a', 'b', 'blockquote', 'br', 'hr', 'caption', 'cite', 'code', 'col',
        'colgroup', 'dd', 'dl', 'dt', 'em', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6',
        'i', 'img', 'li', 'ol', 'p', 'pre', 'q', 'small', 'strike', 'strong',
        'sub', 'sup', 'table', 'tbody', 'td', 'tfoot', 'th', 'thead', 'tr', 'u',
        'ul'],
    :attributes => {
        'a' => ['href', 'title'],
        'blockquote' => ['cite'],
        'col' => ['span', 'width'],
        'colgroup' => ['span', 'width'],
        'img' => ['align', 'alt', 'height', 'src', 'title', 'width'],
        'ol' => ['start', 'type'],
        'q' => ['cite'],
        'table' => ['summary', 'width'],
        'td' => ['abbr', 'axis', 'colspan', 'rowspan', 'width'],
        'th' => ['abbr', 'axis', 'colspan', 'rowspan', 'scope', 'width'],
        'ul' => ['type']
    },
    :add_attributes => {
        'a' => {'rel' => 'nofollow'}
    },
    :protocols => {
        'a' => {'href' => ['ftp', 'http', 'https', 'mailto', :relative]},
        'blockquote' => {'cite' => ['http', 'https', :relative]},
        'img' => {'src' => ['http', 'https', :relative]},
        'q' => {'cite' => ['http', 'https', :relative]}
    }
  }
  
  def santey_title
  	titles = SanteyBlog.meta_titles
  	t = titles[params[:controller].to_sym] ? titles[params[:controller].to_sym][params[:action].to_sym] ? titles[params[:controller].to_sym][params[:action].to_sym] : titles[params[:controller].to_sym][:default] : titles[:default]
    case t
    when /%post_title%/
      t = t.gsub(/%post_title%/, @post.title)
    when /%tag%/
      t = t.gsub(/%tag%/, @tag)
    end
    content_for :title do
      t
    end
  end
  
  def path_to_content content
    case content.class.name
    when "Post"
      root_url + "#{content.created_at.strftime("%Y/%m/%d")}/#{content.slug}"
    end
  end
  
  def dates_path_helper y=nil, m=nil, d=nil
  	"/#{Time.parse("#{y || "01"}-#{m || "01"}-#{d || "01"}").strftime("#{"%Y#{"/%m#{"/%d" if d}" if m}" if y}")}"
  end
  
  def tag_path_helper tag
    "/tag/#{tag}"
  end
  
  def posted_at_helper content
    case content.class.name
    when "Post"
      "<p class='posted_on'>posted on <abbr title='#{content.created_at.strftime("%A, %B %d, %Y %H:%M:%S")}'>
#{content.created_at.strftime("%A, %B %d, %Y")}</abbr></p>"
    end
  end
  
  def cut_text text, full_url, length=500
    if(m = /<hr/i.match(text))
      text = Hpricot(text[0..(m.offset(0)[0] - 1)]).to_html
    else
      text = truncate(text.to_s.gsub(/<\/?[^>]*>/, ""), length)
    end
    return text + "#{link_to("Continue reading", full_url, :class=>"continue_reading")}"
  end
    
  end
end