trustieforge/app/controllers/homework_attach_controller.rb

class HomeworkAttachController < ApplicationController
  ###############################
  #判断当前角色权限时需先找到当前操作的project
  before_filter :find_course_by_bid_id, :only => [:new]
  before_filter :find_course_by_hoemwork_id, :only => [:edit,:update,:destroy,:show,:add_homework_users,:destory_homework_users]
  #判断当前角色是否有操作权限
  #勿删 before_filter :authorize, :only => [:new,:edit,:update,:destroy]

  def find_course_by_bid_id
    @bid = Bid.find(params[:id])
    @course = @bid.courses[0]
  rescue ActiveRecord::RecordNotFound
    render_404
  end

  def find_course_by_hoemwork_id
    @homework = HomeworkAttach.find(params[:id])
    @course = @homework.bid.courses[0]
  end

  #获取作业的成员
  def get_homework_member homework
    @hoemwork_users = users_for_homework(@homework)
    @members = members_for_homework(@homework,@hoemwork_users,params[:q])
    @members = paginateHelper @members,10
  end

  def index
    @homeworks = HomeworkAttach.all
    respond_to do |format|
      format.html # index.html.erb
      format.json { render json: @homeworks }
    end
  end

  #作业添加成员（参与人员）
  def add_homework_users
    if User.current.admin? ||  User.current.member_of_course?(@homework.bid.courses.first)
      #@homework = HomeworkAttach.find(params[:id])
      if params[:membership]
        if params[:membership][:user_ids]
          attrs = params[:membership].dup
          user_ids = attrs.delete(:user_ids)
          user_ids.each do |user_id|
            @homework.homework_users.build(:user_id => user_id)
          end
        end
      end
      @homework.save
      get_homework_member @homework
      respond_to do |format|
        format.js
      end
    else
      render_403 :message => :notice_not_authorized
    end
  end

  #作业删除成员（参与人员）
  def destory_homework_users
    #@homework = HomeworkAttach.find(params[:id])
    if User.current.admin? ||  User.current.member_of_course?(@homework.bid.courses.first)
      homework_user = @homework.homework_users.where("user_id = #{params[:user_id]}").first
      homework_user.destroy
      get_homework_member @homework
      respond_to do |format|
        format.js
      end
    else
      render_403 :message => :notice_not_authorized
    end
  end

  def create
    bid = Bid.find params[:bid_id]
    if User.current.admin? || User.current.member_of_course?(bid.courses.first)   # modify by nwb
      if bid.homeworks.where("user_id = ?",User.current).count == 0
        user_id = params[:user_id]
        bid_id = params[:bid_id]
        sta = 0
        name = params[:new_form][:name]
        description = params[:new_form][:description]
        options = {
            :user_id => user_id,
            :state => sta,
            :name => name,
            :description => description,
            :bid_id => bid_id
        }


        #@homework_list = @bid.homeworks

        @homework = HomeworkAttach.new(options)
        @homework.save_attachments(params[:attachments])
        render_attachment_warning_if_needed(@homework)

        if @homework.save
          respond_to do |format|
            format.html { redirect_to course_for_bid_path @homework.bid }
            format.json { head :no_content }
          end
        else
          render_403 :message => :notice_not_authorized
        end
      else
        render_403 :message => :notice_has_homework
      end
    else
      render_403 :message => :notice_not_authorized
    end
  end

  def new
    @bid = Bid.find(params[:id])
    if User.current.admin? || User.current.member_of_course?(@bid.courses.first)      #nwb
      #该课程的学生的集合(新建不实现功能：添加成员)
      #@members = @bid.courses.first.members.joins(:member_roles).where("member_roles.role_id IN (:role_id) and user_id <> #{User.current.id}", {:role_id => [5, 10]})

      #@members = paginateHelper @members,10
      #@all_user = []
      #@bid.courses.first.members.each do |member|
        #  @all_user << member.user
        #end
      @homework = HomeworkAttach.new
      #@homework_user = members_for_homework(@homework) + User.current
      #@members = @all_user - @homework_user
      respond_to do |format|
        format.html # new.html.erb
        format.json { render json: @homework }
      end
    else
      render_403 :message => :notice_not_authorized
    end
  end

  #获取作业成员的集合
  def get_homework_member_list
    @homework = HomeworkAttach.find(params[:bid_id])
    course = @homework.bid.courses.first
    if User.current.admin? || User.current.member_of_course?(course)
      get_homework_member @homework
    else
      raise "error"
    end
    respond_to do |format|
      format.js
    end
  end

  #获取指定作业的所有成员
  def users_for_homework homework
    homework.nil? ? [] : (homework.users + [homework.user])
  end

  #获取可选成员列表
  #homework：作业
  #users：该作业所有成员
  #q:模糊匹配的用户的昵称
  def members_for_homework homework,users,q
    homework.bid.courses.first.members.joins(:member_roles).where("member_roles.role_id IN (:role_id) and user_id not in (:users)", {:role_id => [5, 10],:users => users}).joins(:user).where("users.login like '%#{q}%'")
  end

  def edit
    #@homework = HomeworkAttach.find(params[:id])
    if User.current.admin? || User.current.member_of_course?(@homework.bid.courses.first)
      #@members = @homework.bid.courses.first.members.joins(:member_roles).where("member_roles.role_id IN (:role_id)", {:role_id => [5, 10]})
      get_homework_member @homework
    else
      render_403 :message => :notice_not_authorized
    end
  end

  def update
    #@homework = HomeworkAttach.find(params[:id])
    course = @homework.bid.courses.first
    if User.current.admin? || User.current.member_of_course?(course)
      name = params[:homework_name]
      description = params[:homework_description]
      @homework.name = name
      @homework.description = description
      if params[:attachments]
        @homework.save_attachments(params[:attachments])
      end
      if @homework.save
        respond_to do |format|
          format.html { redirect_to course_for_bid_path @homework.bid }
          format.json { head :no_content }
        end
      else
      end
    else
      render_403 :message => :notice_not_authorized
    end
  end

  def destroy
    #@homework = HomeworkAttach.find(params[:id])
    if User.current.admin? || User.current == @homework.user
      if @homework.destroy
        respond_to do |format|
          format.html { redirect_to course_for_bid_path @homework.bid }
          format.json { head :no_content }
        end
      else
      end
    else
      render_403 :message => :notice_not_authorized
    end
  end

  #显示作业信息
  def show
    #@homework = HomeworkAttach.find(params[:id])
    if User.current.admin? || User.current.member_of_course?(@homework.bid.courses.first)
      # 打分统计
      stars_reates = @homework.
          rates(:quality)
      stars_reates_count = stars_reates.count == 0 ? 1 : stars_reates.count
      stars_status = stars_reates.select("stars, count(*) as scount").
          group("stars")
      @stars_status_map = Hash.new(0.0)
      stars_status.each do |star_status|
        percent = (star_status.scount * 1.0/ stars_reates_count) * 100.to_f
        percent_m = format("%.2f", percent)
        @stars_status_map["star#{star_status.stars.to_i}".to_sym] =
            percent_m.to_s + "%"
      end
      #是否已经进行过评价
      @has_evaluation = stars_reates.where("rater_id = ?",User.current).count > 0
      #是否开启互评功能
      @is_evaluation = @homework.bid.is_evaluation == 1 || @homework.bid.is_evaluation == nil
      @limit =  10
      @jours = @homework.journals_for_messages.where("is_comprehensive_evaluation is null").order("created_on DESC")
      @feedback_count = @jours.count
      @feedback_pages = Paginator.new @feedback_count, @limit, params['page']
      @offset ||= @feedback_pages.offset
      @jour = @jours[@offset, @limit]
      @comprehensive_evaluation = @homework.journals_for_messages.where("is_comprehensive_evaluation is not null").order("created_on DESC")
    else
      render_403 :message => :notice_not_authorized
    end
  end

  #删除留言
  def destroy_jour
    @journal_destroyed = JournalsForMessage.delete_message(params[:object_id])
    #@homework = HomeworkAttach.find(params[:id])
    #@jours = @homework.journals_for_messages.order("created_on DESC")
    #@limit =  10
    #@feedback_count = @jours.count
    #@feedback_pages = Paginator.new @feedback_count, @limit, params['page']
    #@offset ||= @feedback_pages.offset
    #@jour = @jours[@offset, @limit]
    respond_to do |format|
      format.js
    end
  end

  #添加留言
  def addjours
    @homework = HomeworkAttach.find(params[:jour_id])
    @add_jour = @homework.addjours User.current.id, params[:new_form][:user_message],0,params[:is_comprehensive_evaluation]
    @jours = @homework.journals_for_messages.where("is_comprehensive_evaluation is null").order("created_on DESC")
    @limit =  10
    @feedback_count = @jours.count
    @feedback_pages = Paginator.new @feedback_count, @limit, params['page']
    @offset ||= @feedback_pages.offset
    @jour = @jours[@offset, @limit]
    @comprehensive_evaluation = @homework.journals_for_messages.where("is_comprehensive_evaluation is not null").order("created_on DESC")
    respond_to do |format|
      format.js
    end
  end

  #获取指定作业的平均得分
  def score
    #stars_reates = @homework.rates(:quality)
    #percent = 0
    #stars_reates.each do |star_reates|
    #  percent = percent + star_reates.stars
    #end
    #stars_reates_count = stars_reates.count == 0 ? 1 : stars_reates.count
    #result = percent * 1.0 /  stars_reates_count
    #result
  end

  #添加回复
  def add_jour_reply
    parent_id = params[:reference_id]
    author_id = User.current.id
    reply_user_id = params[:reference_user_id]
    reply_id = params[:reference_message_id] # 暂时不实现
    content = params[:user_notes]
    options = {:user_id => author_id,
               :m_parent_id => parent_id,
               :m_reply_id => reply_id,
               :reply_id => reply_user_id,
               :notes => content,
               :is_readed => false}
    @jfm = JournalsForMessage.new(options)
    @jfm.save
    respond_to do |format|
      format.js{
        @save_succ = true if @jfm.errors.empty?
      }
    end
  end
end