#-- 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.
#++

class WikiMenuItemsController < ApplicationController

  attr_reader :wiki_menu_item

  current_menu_item do |controller|
    controller.wiki_menu_item.item_class.to_sym if controller.wiki_menu_item
  end

  before_filter :find_project_by_project_id
  before_filter :authorize

  def edit
    get_data_from_params(params)
  end

  def update
    wiki_menu_setting = params[:wiki_menu_item][:setting]
    parent_wiki_menu_item = params[:parent_wiki_menu_item]

    get_data_from_params(params)

    if wiki_menu_setting == 'no_item'
      unless @wiki_menu_item.nil?
        if @wiki_menu_item.is_only_main_item?
          redirect_to(select_main_menu_item_project_wiki_path(@project, @page.id)) and return
        else
          @wiki_menu_item.destroy
        end
      end
    else
      @wiki_menu_item.wiki_id = @page.wiki.id
      @wiki_menu_item.name = params[:wiki_menu_item][:name]
      @wiki_menu_item.title = @page_title

      if wiki_menu_setting == 'sub_item'
        @wiki_menu_item.parent_id = parent_wiki_menu_item
      elsif wiki_menu_setting == 'main_item'
        @wiki_menu_item.parent_id = nil
        assign_wiki_menu_item_params @wiki_menu_item
      end
    end

    if not @wiki_menu_item.errors.size >= 1 and (@wiki_menu_item.destroyed? or @wiki_menu_item.save)
      flash[:notice] = l(:notice_successful_update)
      redirect_back_or_default({ :action => 'edit', :id => @page_title })
    else
      respond_to do |format|
        format.html { render :action => 'edit', :id => @page_title }
      end
    end
  end

  def select_main_menu_item
    wiki_page_title = params[:id]
    @possible_wiki_pages = @project.wiki.pages.all(:include => :parent).reject{|page| page.title == wiki_page_title || page.menu_item.present? && page.menu_item.is_main_item?}
  end

  def replace_main_menu_item
    current_page = WikiPage.find params[:id]
    current_menu_item = current_page.menu_item

    if page = WikiPage.find_by_id(params[:wiki_page][:id])
      create_main_menu_item_for_wiki_page(page, current_menu_item.options)
    end

    current_menu_item.destroy

    redirect_to action: :edit, id: current_page.title
  end

  private

  def get_data_from_params(params)
    @page_title = params[:id]
    wiki_id = @project.wiki.id

    @page = WikiPage.find_by_title_and_wiki_id(@page_title, wiki_id)
    @wiki_menu_item = WikiMenuItem.find_or_initialize_by_wiki_id_and_title(wiki_id, @page_title)
    possible_parent_menu_items = WikiMenuItem.main_items(wiki_id) - [@wiki_menu_item]

    @parent_menu_item_options = possible_parent_menu_items.map {|item| [item.name, item.id]}

    @selected_parent_menu_item_id = if @wiki_menu_item.parent
      @wiki_menu_item.parent.id
    else
      @page.nearest_parent_menu_item(:is_main_item => true).try :id
    end
  end

  def assign_wiki_menu_item_params(menu_item)
    if params[:wiki_menu_item][:new_wiki_page] == "1"
      menu_item.new_wiki_page = true
    elsif params[:wiki_menu_item][:new_wiki_page] == "0"
      menu_item.new_wiki_page = false
    end

    if params[:wiki_menu_item][:index_page] == "1"
      menu_item.index_page = true
    elsif params[:wiki_menu_item][:index_page] == "0"
      menu_item.index_page = false
    end
  end

  def create_main_menu_item_for_wiki_page(page, options={})
    wiki = page.wiki

    menu_item = if item = page.menu_item
      item.tap {|item| item.parent_id = nil}
    else
      wiki.wiki_menu_items.build(title: page.title, name: page.pretty_title)
    end

    menu_item.options = options
    menu_item.save
  end
end