# redMine - project management software
# Copyright (C) 2006  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 ProjectsHelper
  def link_to_version(version, options = {})
    return '' unless version && version.is_a?(Version)
    link_to h(version.name), { :controller => 'versions', :action => 'show', :id => version }, options
  end
  
  def project_settings_tabs
    tabs = [{:name => 'info', :action => :edit_project, :partial => 'projects/edit', :label => :label_information_plural},
            {:name => 'modules', :action => :select_project_modules, :partial => 'projects/settings/modules', :label => :label_module_plural},
            {:name => 'members', :action => :manage_members, :partial => 'projects/settings/members', :label => :label_member_plural},
            {:name => 'versions', :action => :manage_versions, :partial => 'projects/settings/versions', :label => :label_version_plural},
            {:name => 'categories', :action => :manage_categories, :partial => 'projects/settings/issue_categories', :label => :label_issue_category_plural},
            {:name => 'wiki', :action => :manage_wiki, :partial => 'projects/settings/wiki', :label => :label_wiki},
            {:name => 'repository', :action => :manage_repository, :partial => 'projects/settings/repository', :label => :label_repository},
            {:name => 'boards', :action => :manage_boards, :partial => 'projects/settings/boards', :label => :label_board_plural}
            ]
    tabs.select {|tab| User.current.allowed_to?(tab[:action], @project)}     
  end
  
  def parent_project_select_tag(project)
    options = '<option></option>' + project_tree_options_for_select(project.possible_parents, :selected => project.parent)
    content_tag('select', options, :name => 'project[parent_id]')
  end
  
  # Renders a tree of projects as a nested set of unordered lists
  # The given collection may be a subset of the whole project tree
  # (eg. some intermediate nodes are private and can not be seen)
  def render_project_hierarchy(projects)
    s = ''
    if projects.any?
      ancestors = []
      projects.each do |project|
        if (ancestors.empty? || project.is_descendant_of?(ancestors.last))
          s << "<ul class='projects #{ ancestors.empty? ? 'root' : nil}'>\n"
        else
          ancestors.pop
          s << "</li>"
          while (ancestors.any? && !project.is_descendant_of?(ancestors.last)) 
            ancestors.pop
            s << "</ul></li>\n"
          end
        end
        classes = (ancestors.empty? ? 'root' : 'child')
        s << "<li class='#{classes}'><div class='#{classes}'>" +
               link_to(h(project), {:controller => 'projects', :action => 'show', :id => project}, :class => "project #{User.current.member_of?(project) ? 'my-project' : nil}")
        s << "<div class='wiki description'>#{textilizable(project.short_description, :project => project)}</div>" unless project.description.blank?
        s << "</div>\n"
        ancestors << project
      end
      s << ("</li></ul>\n" * ancestors.size)
    end
    s
  end
end