class ContextContentBlock < Block
    
  settings_items :show_name, :type => :boolean, :default => true
  settings_items :show_image, :type => :boolean, :default => true
  settings_items :show_parent_content, :type => :boolean, :default => true
  settings_items :types, :type => Array, :default => ['UploadedFile']

  settings_items :limit, :type => :integer, :default => 6

  include Noosfero::Plugin::HotSpot
    
  def self.description
    _('Display context content')
  end

  def help
    _('This block displays content based on context.')
  end

  def available_content_types
    @available_content_types ||= [UploadedFile, Event, TinyMceArticle, TextileArticle, RawHTMLArticle, Folder, Blog, Forum, Gallery, RssFeed] + plugins.dispatch(:content_types)
    checked_types = types.map {|t| t.constantize}
    checked_types + (@available_content_types - checked_types)
  end

  def first_content_types
    available_content_types.first(first_types_count) 
  end

  def more_content_types
    available_content_types.drop(first_types_count) 
  end

  def first_types_count
    [2, types.length].max
  end

  def types=(new_types)
    settings[:types] = new_types.reject(&:blank?)
  end

  def content_image(content)
    block = self
    lambda do
      if content.image?
        image_tag(content.public_filename(:thumb))
      else
        extra_class = content.kind_of?(UploadedFile) ? "extension-#{content.extension}" : ''
        content_tag 'div', '', :class => "context-icon icon-#{content.class.icon_name(content)} #{extra_class}"
      end
    end
  end

  def contents(page, p=1)
    return @children unless @children.blank?
    if page
      @children = page.children.with_types(types).paginate(:per_page => limit, :page => p)
      (@children.blank? && show_parent_content) ? contents(page.parent, p) : @children
    else
      nil
    end
  end

  def footer
    block = self
    lambda do
      contents = block.contents(@page)
      if contents
        content_tag('div',
          render(:partial => 'blocks/more', :locals => {:block => block, :contents => contents, :article_id => @page.id}), :id => "context_content_more_#{block.id}", :class => "more_button")
      else
        ''
      end
    end
  end

  def content(args={})
    block = self
    lambda do
      contents = block.contents(@page)
      if !contents.blank?
        block_title(block.title) + content_tag('div', 
            render(:file => 'blocks/context_content', :locals => {:block => block, :contents => contents}), :class => 'contents', :id => "context_content_#{block.id}")
      else
        ''
      end
    end
  end

end