#-- copyright
# OpenProject is a project management system.
# Copyright (C) 2012-2013 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 Redmine::MenuManager::TopMenuHelper

  def render_top_menu_left
    content_tag :ul, :id => "account-nav-left", :class => "menu_root account-nav" do
      [render_main_top_menu_nodes,
       render_projects_top_menu_node,
       render_module_top_menu_node].join.html_safe
    end
  end

  def render_top_menu_right
    content_tag :ul, :id => "account-nav-right", :class => "menu_root account-nav" do
      [ render_help_top_menu_node,
       render_user_top_menu_node].join.html_safe
    end
  end

  private

  def render_projects_top_menu_node
    return "" if User.current.anonymous? and Setting.login_required?

    return "" if User.current.number_of_known_projects.zero?

    heading = link_to l(:label_project_plural),
                      { :controller => '/projects',
                        :action => 'index' },
                      :title => l(:label_project_plural),
                      :access_key => OpenProject::AccessKeys.key_for(:project_search),
                      :'data-icon' => 'g'

    if User.current.impaired?
      content_tag :li do
        heading
      end
    else
      render_drop_down_menu_node heading do
        content_tag :ul, :style => "display:none" do
          ret = content_tag :li do
            link_to l(:label_project_view_all), :controller => '/projects',
                                                :action => 'index'
          end

          ret += content_tag :li, :id => "project-search-container" do
            hidden_field_tag("", "", :class => 'select2-select')
          end

          ret
        end
      end
    end
  end

  def render_user_top_menu_node(items = menu_items_for(:account_menu))
    unless User.current.logged?
      render_drop_down_menu_node(link_to(l(:label_login),
                                         { :controller => '/account',
                                           :action => 'login' },
                                           :class => 'login',
                                           :title => l(:label_login)),
                                 :class => "drop-down last-child") do
        content_tag :ul do
          render :partial => 'account/login'
        end
      end
    else
      render_drop_down_menu_node link_to_user(User.current, :title => User.current.to_s),
                                 items,
                                 :class => "drop-down last-child"
    end
  end

  def render_module_top_menu_node(items = more_top_menu_items)
    render_drop_down_menu_node link_to(l(:label_modules), "#", :title => l(:label_modules), :'data-icon' => 'M'),
                               items,
                               :id => "more-menu"
  end

  def render_help_top_menu_node(item = help_menu_item)
    render_menu_node(item)
  end

  def render_main_top_menu_nodes(items = main_top_menu_items)
    items.collect do |item|
      render_menu_node(item)
    end.join(" ")
  end

  # Menu items for the main top menu
  def main_top_menu_items
    split_top_menu_into_main_or_more_menus[:main]
  end

  # Menu items for the more top menu
  def more_top_menu_items
    split_top_menu_into_main_or_more_menus[:more]
  end

  def help_menu_item
    split_top_menu_into_main_or_more_menus[:help]
  end

  # Split the :top_menu into separate :main and :more items
  def split_top_menu_into_main_or_more_menus
    unless @top_menu_split
      items_for_main_level = []
      items_for_more_level = []
      help_menu = nil
      menu_items_for(:top_menu) do |item|
        if item.name == :my_page
          items_for_main_level << item
        elsif item.name == :help
          help_menu = item
        elsif item.name == :projects
          # Remove, present in layout
        else
          items_for_more_level << item
        end
      end
      @top_menu_split = {
        :main => items_for_main_level,
        :more => items_for_more_level,
        :help => help_menu
      }
    end
    @top_menu_split
  end
end