#-- encoding: UTF-8
#-- copyright
# OpenProject is a project management system.
# Copyright (C) 2012-2014 the OpenProject Foundation (OPF)
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License version 3.
#
# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
# Copyright (C) 2006-2013 Jean-Philippe Lang
# Copyright (C) 2010-2013 the ChiliProject Team
#
# 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.
#
# See doc/COPYRIGHT.rdoc for more details.
#++

module WikiHelper
  def wiki_page_options_for_select(pages, selected = nil, parent = nil, level = 0)
    pages = pages.group_by(&:parent) unless pages.is_a?(Hash)
    s = ''
    if pages.has_key?(parent)
      pages[parent].each do |page|
        attrs = "value='#{page.id}'"
        attrs << " selected='selected'" if selected == page
        indent = (level > 0) ? ('&nbsp;' * level * 2 + '&#187; ') : nil

        s << "<option #{attrs}>#{indent}#{h(page.pretty_title)}</option>\n" +
               wiki_page_options_for_select(pages, selected, page, level + 1)
      end
    end
    s.html_safe
  end

  def breadcrumb_for_page(page, action = nil)
    if action
      related_pages = page.ancestors.reverse + [page]
      breadcrumb_paths(*(related_pages.collect{|parent| link_to h(parent.breadcrumb_title), {id: parent.title, project_id: parent.project, action: "show"}} + [action]))
    else
      related_pages = page.ancestors.reverse
      breadcrumb_paths(*(related_pages.collect{|parent| link_to h(parent.breadcrumb_title), {id: parent.title, project_id: parent.project, action: "show"}} + [h(page.breadcrumb_title)]))
    end
  end

  def nl2br(content)
    content.gsub(/(?:\n\r?|\r\n?)/, '<br />').html_safe
  end
end