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# encoding: utf-8

#

# Redmine - project management software

# Copyright (C) 2006-2011  Jean-Philippe Lang

#

# This program is free software; you can redistribute it and/or

# modify it under the terms of the GNU General Public License

# as published by the Free Software Foundation; either version 2

# of the License, or (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

module AttachmentsHelper

  # Displays view/delete links to the attachments of the given object

  # Options:

  #   :author -- author names are not displayed if set to false

  def link_to_attachments(container, options = {})

    options.assert_valid_keys(:author)

    if container.attachments.any?

      options = {:deletable => container.attachments_deletable?, :author => true}.merge(options)

      render :partial => 'attachments/links', :locals => {:attachments => container.attachments, :options => options}

    end

  end

  def render_api_attachment(attachment, api)

    api.attachment do

      api.id attachment.id

      api.filename attachment.filename

      api.filesize attachment.filesize

      api.content_type attachment.content_type

      api.description attachment.description

      api.content_url url_for(:controller => 'attachments', :action => 'download', :id => attachment, :filename => attachment.filename, :only_path => false)

      api.author(:id => attachment.author.id, :name => attachment.author.name) if attachment.author

      api.created_on attachment.created_on

    end

  end

  # Returns true if user agent appears (approximately) to be a search

  # bot or crawler

  def user_is_search_bot?

    agent = request.env['HTTP_USER_AGENT']

    agent and agent =~ /(bot|slurp|crawler|spider)\b/i

  end

end