# Redmine - project management software
# Copyright (C) 2006-2013  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.

class BoardsController < ApplicationController
  layout 'base_projects'#by young
  default_search_scope :messages
  # before_filter :check_authentication, :except => []
  before_filter :find_project_by_project_id, :find_board_if_available, :except => [:join_to_org_subfields]
  before_filter :authorize, :except => [:new, :show, :create, :index, :join_to_org_subfields, :update_position, :update_name, :update_boards_position, :update_boards_name]
  accept_rss_auth :index, :show


  helper :sort
  include SortHelper
  helper :watchers
  helper :project_score
  helper :attachments
  include PraiseTreadHelper
  include ApplicationHelper
  def index
    #modify by nwb
    @flag = params[:flag] || false
    if @project
      if !@project.is_public? && !User.current.member_of?(@project) && !User.current.admin? && !User.current.allowed_to?(:view_messages, @project)
        render_403
      else
        @boards = @project.boards.includes(:last_message => :author).all
        @boards = [] << @boards[0] if @boards.any?
        if @boards.size == 1
          @board = @boards.first
          show and return
        end
        render :layout => false if request.xhr?
      end
    elsif @course
      if (User.current.admin? || @course.is_public == 1 || (@course.is_public == 0 && User.current.member_of_course?(@course)))
        @boards = @course.boards.includes(:last_message => :author).all
        if @course.boards.empty?
          @board = @course.boards.build
          @board.name = "#{l(:label_borad_course)}"
          @board.description = @course.name.to_s
          @board.project_id = -1
          if @board.save
            @boards = @course.boards.includes(:last_message => :author).all
          end
        end
        if params[:board_id]
          @board = Board.find params[:board_id].to_i
        else
          unless @course.boards.where(:parent_id => 0).empty?
            @board = @course.boards.where(:parent_id => 0).first
          end
        end
        show and return
      else
        render_403
      end
    elsif @contest
      if (User.current.admin? || @contest.is_public || (!@contest.is_public && User.current.member_of_contest?(@contest)))
        @boards = @contest.boards.includes(:last_message => :author).all
        if @contest.boards.empty?
          @board = @contest.boards.build
          @board.name = " #{l(:label_board_contest) }"
          @board.description = @contest.name.to_s
          @board.project_id = -1
          @board.course_id = -1
          if @board.save
            @boards = @contest.boards.includes(:last_message => :author).all
          end
        end
        if params[:board_id]
          @board = Board.find params[:board_id].to_i
        else
          unless @contest.boards.where(:parent_id => 0).empty?
            @board = @contest.boards.where(:parent_id => 0).first
          end
        end
        show and return
      else
        render_403
      end
    end
  end

  def show
    # 顶部导航
    @project_menu_type = 3

    @order, @b_sort,@type = params[:order] || 1, params[:sort] || 1, params[:type] || 1
    #确定 sort_type 1升序 2 降序
    if @order.to_i == @type.to_i
      @b_sort = @b_sort.to_i == 1 ? 2 : 1
    else
      @b_sort = 2
    end
    sort_name = "updated_on"
    sort_type = @b_sort == 1 ? "asc" : "desc"
    @q = params[:name]
    q = "%#{@q}%"

    # 讨论区消息状态更新（已读和未读）
    if @project
      ForgeMessage.where("user_id =? and project_id =? and viewed =?", User.current.id, @project.id, 0).update_all(:viewed => true)
    elsif @course
      CourseMessage.where("user_id =? and course_id =? and viewed =?", User.current.id, @course.id, 0).update_all(:viewed => true)
    elsif @contest
      ContestMessage.where("user_id =? and contest_id =? and viewed =?", User.current.id, @contest.id, 0).update_all(:viewed => true)
    end

    # sort_init 'updated_on', 'desc'
    # sort_update 'created_on' => "#{Message.table_name}.created_on",
    #             'replies' => "#{Message.table_name}.replies_count",
    #             'updated_on' => "COALESCE(last_replies_messages.created_on, #{Message.table_name}.created_on)"

    # @is_new = params[:is_new]
    @topic_count = @board ? @board.topics.count : 0
    if @project
      if @board
        @topic_count = @board.topics.count();
        @topic_pages = 0#(params[:page] ? params[:page].to_i + 1 : 0) *10
        @topics = @board.topics.reorder("#{Message.table_name}.sticky DESC, COALESCE(last_replies_messages.created_on, #{Message.table_name}.created_on) #{sort_type}").
            offset(@topic_pages).includes(:last_reply).
            preload(:author, {:last_reply => :author}).all();
      else
        @topics = [];
      end
    elsif @course
      if (@board)
        @is_teacher = User.current.allowed_to?(:as_teacher,@course) || User.current.admin?
        @topic_count = @board.topics.count();
        @topic_pages = 0 #(params[:page] ? params[:page].to_i + 1 : 0) *10
        @topics = @board.topics.where("#{Message.table_name}.subject like '#{q}'").reorder("#{Message.table_name}.sticky DESC, COALESCE(last_replies_messages.created_on, #{Message.table_name}.created_on) #{sort_type}").offset(@topic_pages).includes(:last_reply).preload(:author, {:last_reply => :author}).all();
      else
        @topics = [];
      end
    elsif @contest
      if (@board)
        @topic_count = @board.topics.count();
        @topic_pages = 0 #(params[:page] ? params[:page].to_i + 1 : 0) *10
        @topics = @board.topics.reorder("#{Message.table_name}.sticky DESC, COALESCE(last_replies_messages.created_on, #{Message.table_name}.updated_on) #{sort_type}").offset(@topic_pages).includes(:last_reply).preload(:author, {:last_reply => :author}).all();
      else
        @board = @contest.boards.build
        @board.name = " #{l(:label_board_contest) }"#self.name
        @board.description = @contest.name.to_s
        @board.project_id = -1
        @board.course_id = -1
        if @board.save
          @topic_count = @board.topics.count();
          @topic_pages = 0 #(params[:page] ? params[:page].to_i + 1 : 0) *10
          @topics = @board.topics.reorder("#{Message.table_name}.sticky DESC, COALESCE(last_replies_messages.created_on, #{Message.table_name}.updated_on) #{sort_type}").offset(@topic_pages).includes(:last_reply).preload(:author, {:last_reply => :author}).all();
        else
          @topics = []
        end
      end
    end

    #根据 赞+回复数排序
    if @order.to_i == 2
      @type = 2
      @topics.each do |topic|
        all_comments = []
        #count=get_all_children(all_comments, topic).count
        count=Message.where("root_id = #{topic.id}").count
        topic[:infocount] = get_praise_num(topic) + count
        if topic[:infocount] < 0
          topic[:infocount] = 0
        end
      end
      @b_sort == 1 ? @topics = @topics.sort{|x,y| x[:infocount]  <=> y[:infocount] } : @topics = @topics.sort{|x,y| y[:infocount]  <=> x[:infocount] }
      @topics = sort_by_sticky @topics
      @topics = sortby_time_countcommon_hassticky @topics,sort_name
    else
      @type = 1
    end

    @all_count = @topics.count
    #分页
    @limit = 15
    @is_remote = true
    @atta_count = @topics.count
    @atta_pages = Paginator.new @atta_count, @limit, params['page'] || 1
    @offset ||= @atta_pages.offset
    @topics = paginateHelper @topics,@limit

    @page = params[:page] ? params[:page].to_i + 1 : 0
    @message = Message.new(:board => @board)
    #modify by nwb
    if (params[:page] || params[:order])
      respond_to do |format|
        format.js{render "show.js.erb"}
      end
    else
      respond_to do |format|
        format.js {render "show.js.erb"}
        format.html {
          if @project
            render :action => 'show', :layout => 'base_projects'
          elsif @course
            @left_nav_type = 2
            @params=params
            render :action => 'show', :layout => 'base_courses'
          elsif @contest
            @left_nav_type = 4
            @params=params
            render :action => 'show', :layout => 'base_contests'
          end
        }
        format.atom {
          @messages = @board.messages.
              reorder('created_on DESC').
              includes(:author, :board).
              limit(Setting.feeds_limit.to_i).
              all
          if @project
            render_feed(@messages, :title => "#{@project}: #{@board}")
          elsif @course
            render_feed(@messages, :title => "#{@course}: #{@board}")
          end
        }
      end
    end
  end

  def new
    @board = @project.boards.build
    @board.safe_attributes = params[:board]
    if @project.project_type == 1
      @left_nav_type = 2
      render :layout => 'base_courses'
    end
  end

  def create
    if @project
      @board = @project.boards.build
      @board.safe_attributes = params[:board]

      if @board.save
        flash[:notice] = l(:notice_successful_create)
        #Modified by young
        #redirect_to_settings_in_projects
        redirect_to project_board_url(@project, @board)
        #Ended by young
      else
        render :action => 'new'
      end
    elsif @course
      parent = Board.find params[:board_id].to_i
      board = @course.boards.build
      board.name = params[:name]
      board.description = board.name
      board.project_id = -1
      board.position = parent.children.count + 1
      parent.children << board
      @course_boards = parent.children.reorder("position asc")

      # @course_board = @course.boards.where(:parent_id => 0).first
      # @board = @course_board.children.order("position asc")
      # @board_count = @board.count
      respond_to do |format|
        format.js
      end
    elsif @contest
      parent = Board.find params[:board_id].to_i
      board = @contest.boards.build
      board.name = params[:name]
      board.description = board.name
      board.project_id = -1
      board.course_id = -1
      board.position = parent.children.count + 1
      parent.children << board
      respond_to do |format|
        format.js
      end
    end
  end

  def edit
    if @project.project_type == 1
      @left_nav_type = 2
      render :layout => 'base_courses'
    end
  end

  def update
    @board.safe_attributes = params[:board]
    if @board.save
      redirect_to_settings_in_projects
    else
      render :action => 'edit'
    end
  end

  def destroy
    course_board = @board.parent
    after_boards = @board.parent.children.where("position > #{@board.position}")
    after_boards.update_all("position = position - 1")
    @board.destroy

    # @course_board = @course.boards.where(:parent_id => 0).first
    # @board = @course_board.children.order("position asc")
    # @board_count = @board.count

    if @course
      @course_boards = course_board.children.reorder("position asc")
      respond_to do |format|
        format.js
      end
    elsif @project
      redirect_to_settings_in_projects
    end
  end

  def update_position
    if @course
      @is_teacher = User.current.allowed_to?(:as_teacher,@course) || User.current.admin?

      boards = @board.parent.children
      if @is_teacher && params[:opr] == 'up' && @board.position > 1
        before_board = boards.where("position = #{@board.position - 1}").first
        if before_board && @board.update_attribute('position', @board.position - 1)
          before_board.update_attribute('position', before_board.position + 1)
        end
      elsif @is_teacher && params[:opr] == 'down' && @board.position < boards.count
        after_board = boards.where("position = #{@board.position + 1}").first
        if after_board && @board.update_attribute('position', @board.position + 1)
          after_board.update_attribute('position', after_board.position - 1)
        end
      end
      respond_to do |format|
        format.js
      end
    end
  end

  def update_boards_position
    boards = @board.parent.children
    if params[:opr] == 'up' && @board.position > 1
      before_board = boards.where("position = #{@board.position - 1}").first
      if before_board && @board.update_attribute('position', @board.position - 1)
        before_board.update_attribute('position', before_board.position + 1)
      end
    elsif params[:opr] == 'down' && @board.position < boards.count
      after_board = boards.where("position = #{@board.position + 1}").first
      if after_board && @board.update_attribute('position', @board.position + 1)
        after_board.update_attribute('position', after_board.position - 1)
      end
    end

    @course_board = @course.boards.where(:parent_id => 0).first
    @board = @course_board.children.order("position asc")
    @board_count = @board.count

    respond_to do |format|
      format.js
    end
  end

  def update_name
    if @course
      @board.update_attribute("name", params[:name])
      @board.update_attribute("description", params[:name])
      @course_boards = @course.boards.where(:parent_id => 0).first.children.reorder("position asc")
    end
  end

  def update_boards_name
    @board.update_attribute("name", params[:name])
    @board.update_attribute("description", params[:name])

    @course_board = @course.boards.where(:parent_id => 0).first
    @board = @course_board.children.order("position asc")
    @board_count = @board.count

    respond_to do |format|
      format.js
    end
  end

  def join_to_org_subfields
    if params[:id]
      @board = Board.find(params[:id])
      @org_subfield_ids = params[:org_subfield_ids]
      @org_subfield_ids.each do |id|
        OrgSubfieldBoard.create(:org_subfield_id => id.to_i, :board_id => params[:id].to_i)
      end
    end
  end

  private
  def redirect_to_settings_in_projects
    redirect_to settings_project_url(@project, :tab => 'boards')
  end

  def find_board_if_available
    if @project
      @board = @project.boards.find(params[:id]) if params[:id]
    elsif @course
      @board = @course.boards.find(params[:id]) if params[:id]
    elsif @contest
      @board = @contest.boards.find(params[:id]) if params[:id]
    end
  rescue ActiveRecord::RecordNotFound
    render_404
  end
end