# encoding: UTF-8

# Copyright 2011-2013 innoQ Deutschland GmbH
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

##
# Provides a basic API wrapping low-level iQvoc config operations
# on Iqvoc.navigation_items

module Iqvoc
  module Navigation
    def self.items
      Iqvoc.navigation_items
    end

    def self.add(item, position = nil)
      if position
        items.insert(position, item)
      else
        items << item
      end
    end

    def self.add_grouped(item, position = nil)
      index = setup_extension_group(position)
      items[index][:items] << item
    end

    private
    # Setup an empty navigation group for extensions
    # Returns index for the new (or existing) group, so add_grouped
    # can use the index to insert it's item under the group
    def self.setup_extension_group(position)
      group = {
        text: proc { t('txt.views.navigation.extensions') },
        items: []
      }

      if position && !items[position][:items]
        items.insert(position, group)
      elsif position && items[position][:items]
        return position
      else
        items << group
      end

      items.index(group)
    end
  end
end