trustieforge/app/controllers/homework_common_controller.rb

class HomeworkCommonController < ApplicationController
  require 'net/http'
  require 'json'
  require "base64"
  layout "base_courses"

  include StudentWorkHelper
  before_filter :find_course, :only => [:index,:new,:create]
  before_filter :find_homework, :only => [:edit,:update,:alert_anonymous_comment,:start_anonymous_comment,:stop_anonymous_comment,:destroy,:start_evaluation_set,:set_evaluation_attr,:score_rule_set,:alert_forbidden_anonymous_comment,:alert_open_student_works,:open_student_works,:set_score_open,:alert_score_open_modal]
  before_filter :teacher_of_course, :only => [:new, :create, :edit, :update, :destroy, :start_anonymous_comment, :stop_anonymous_comment, :alert_anonymous_comment,:start_evaluation_set,:set_evaluation_attr,:score_rule_set,:alert_forbidden_anonymous_comment,:alert_open_student_works,:open_student_works]
  before_filter :member_of_course, :only => [:index]

  def index
    #unless params[:page]
    #  update_homework_time(@course.homework_commons)
    #end
    search = "%#{params[:search].to_s.strip.downcase}%"
    @new_homework = HomeworkCommon.new
    @new_homework.homework_detail_manual = HomeworkDetailManual.new
    @new_homework.course = @course
    @page = params[:page] ? params[:page].to_i + 1 : 0
    @is_teacher = User.current.logged? && (User.current.admin? || User.current.allowed_to?(:as_teacher,@course))
    if @is_teacher
      #@homeworks = @course.homework_commons.order("created_at desc").limit(10).offset(@page * 10)
      @homework_commons = @course.homework_commons.where("name like '%#{search}%'").order("created_at desc")
    else
      #@homeworks = @course.homework_commons.where("publish_time <= '#{Date.today}'").order("created_at desc").limit(10).offset(@page * 10)
      @homework_commons = @course.homework_commons.where("name like '%#{search}%' and publish_time <= '#{Date.today}'").order("created_at desc")
    end
    #update_homework_time @homework_commons
    @is_student = User.current.logged? && (User.current.admin? || (User.current.member_of_course?(@course) && !@is_teacher))
    @is_new = params[:is_new]

    @homeworks = paginateHelper @homework_commons,10
    #设置at已读
    ids =  @homeworks.inject([]) do |ids, homework|
      jids = homework.journals_for_messages.map(&:id)
      jids ? ids + jids : ids

      # homework.delay.set_jour_viewed
    end
    unless ids.empty?
      User.current.at_messages.where(viewed: false,
                                   at_message_type: 'JournalsForMessage',
                                   at_message_id: ids).update_all(viewed: true)
    end

    @left_nav_type = 3
    respond_to do |format|
      format.js
      format.html
    end
  end

  #新建作业，在个人作业列表创建作业
  def new
    render_404
  end

  #新建作业，在个人作业列表创建作业
  def create
    redirect_to user_homeworks_user_path(User.current.id)
  end

  def edit
    @user = User.current
    @hw_status = params[:hw_status].to_i
    @is_manage = params[:is_manage]
    if @hw_status != 1
      @left_nav_type = 3
      respond_to do |format|
        format.html{render :layout => 'base_courses'}
      end
    else
      respond_to do |format|
        format.html{render :layout => 'base_course_community'}
      end
    end
  end

  def update
    if params[:homework_common]
      @homework.name = params[:homework_common][:name]
      @homework.description = params[:homework_common][:description]
      if params[:homework_common][:publish_time] == ""
        @homework.publish_time = Date.today
      else
        @homework.publish_time = params[:homework_common][:publish_time]
      end
      homework_detail_manual = @homework.homework_detail_manual || HomeworkDetailManual.new
      param_end_time = Time.parse(params[:homework_common][:end_time]).strftime("%Y-%m-%d")
      homework_end_time = @homework.end_time ? Time.parse(@homework.end_time.to_s).strftime("%Y-%m-%d") : ''
      if homework_end_time != param_end_time
        if homework_end_time > param_end_time
          @homework.student_works.where("work_status = 1").each do |st|
            if param_end_time < Time.parse(st.commit_time.to_s).strftime("%Y-%m-%d")
              st.late_penalty = @homework.late_penalty
              st.work_status = 2
              st.save
              #更新CourseHomeworkStatistics中学生的迟交作品数
              course_statistics = CourseHomeworkStatistics.find_by_course_id_and_user_id(@homework.course_id, st.user_id)
              course_statistics.update_attribute('late_commit_work_num', course_statistics.late_commit_work_num + 1) if course_statistics
            end
          end
        else
          @homework.student_works.where("work_status = 2").each do |st|
            if param_end_time >= Time.parse(st.commit_time.to_s).strftime("%Y-%m-%d")
              st.late_penalty = 0
              st.work_status = 1
              st.save
              #更新CourseHomeworkStatistics中学生的迟交作品数
              course_statistics = CourseHomeworkStatistics.find_by_course_id_and_user_id(@homework.course_id, st.user_id)
              course_statistics.update_attribute('late_commit_work_num', (course_statistics.late_commit_work_num - 1) < 0 ? 0 : (course_statistics.late_commit_work_num - 1)) if course_statistics
            end
          end
        end
      end
      @homework.end_time = params[:homework_common][:end_time] || Time.now
      @homework.course_id = params[:course_id]
      if params[:homework_type] && params[:homework_type].to_i != @homework.homework_type
        if @homework.homework_type == 2
          @homework.homework_detail_programing.destroy if @homework.homework_detail_programing
          @homework.homework_tests.destroy_all
        elsif @homework.homework_type == 3
          @homework.homework_detail_group.destroy if @homework.homework_detail_group
          create_works_list @homework
        end
        if params[:homework_type].to_i == 3
          @homework.student_works.destroy_all
        end
      end
      @homework.homework_type = params[:homework_type].to_i || @homework.homework_type
      anonymous = params[:homework_common][:anonymous_comment] ? params[:homework_common][:anonymous_comment].to_i : 1
      if anonymous != @homework.anonymous_comment
        if  anonymous == 1
          homework_detail_manual.ta_proportion = @homework.homework_type == 2 ? 0.4 : 1.0
        else
          homework_detail_manual.ta_proportion = @homework.homework_type == 2 ? 0.3 : 0.6
        end
      end

      status = false
      if @homework.publish_time > Date.today && homework_detail_manual.comment_status == 1
        homework_detail_manual.comment_status = 0
        @homework.student_works.destroy_all
        #更新CourseHomeworkStatistics中每个学生的未交作品数
        @homework.course.student.each do |student|
          course_statistics = CourseHomeworkStatistics.find_by_course_id_and_user_id(@homework.course_id, student.student_id)
          course_statistics.update_attribute('un_commit_work_num', (course_statistics.un_commit_work_num - 1) < 0 ? 0 : (course_statistics.un_commit_work_num - 1)) if course_statistics
        end
      elsif @homework.publish_time <= Date.today && homework_detail_manual.comment_status == 0
        homework_detail_manual.comment_status = 1
        create_works_list @homework
        status = true
        #更新CourseHomeworkStatistics中每个学生的未交作品数
        @homework.course.student.each do |student|
          course_statistics = CourseHomeworkStatistics.find_by_course_id_and_user_id(@homework.course_id, student.student_id)
          course_statistics.update_attribute('un_commit_work_num', course_statistics.un_commit_work_num + 1) if course_statistics
        end
      end
      eval_start = homework_detail_manual.evaluation_start
      if eval_start.nil? || (eval_start <= @homework.end_time && homework_detail_manual.comment_status <= 1)
        homework_detail_manual.evaluation_start = @homework.end_time + 7
        homework_detail_manual.evaluation_end = homework_detail_manual.evaluation_start + 7
      end
      @homework.save_attachments(params[:attachments])
      render_attachment_warning_if_needed(@homework)

      #编程作业相关属性
      if @homework.homework_type == 2
          @homework.homework_detail_programing ||= HomeworkDetailPrograming.new
          @homework_detail_programing = @homework.homework_detail_programing
          @homework_detail_programing.language = params[:language_type].to_i if params[:language_type]
          if anonymous != @homework.anonymous_comment
            if anonymous == 1
              @homework_detail_programing.ta_proportion = 0.6
            else
              @homework_detail_programing.ta_proportion = 0.5
            end
          end

          @homework.homework_tests.delete_all if params[:program]
          inputs = params[:program][:input] if params[:program]
          if Array === inputs
            inputs.each_with_index do |val, i|
              @homework.homework_tests << HomeworkTest.new(
                  input: val,
                  output: params[:program][:output][i]
              )
            end
          end
      end

      #分组作业
      if @homework.homework_type == 3 && @homework.student_works.has_committed.count == 0
        @homework.homework_detail_group ||= HomeworkDetailGroup.new
        @homework_detail_group = @homework.homework_detail_group
        @homework_detail_group.min_num = params[:min_num].to_i if params[:min_num]
        @homework_detail_group.max_num = params[:max_num].to_i if params[:max_num]
        @homework_detail_group.base_on_project = params[:base_on_project] ? 1 : 0
      end

      if anonymous != @homework.anonymous_comment
        @homework.student_works.where("work_status != 0").each do |student_work|
          student_work.save
        end
      end

      @homework.anonymous_comment = params[:homework_common][:anonymous_comment] ? params[:homework_common][:anonymous_comment].to_i : 1
      if @homework.save
        homework_detail_manual.save if homework_detail_manual
        @homework_detail_programing.save if @homework_detail_programing
        @homework_detail_group.save if @homework_detail_group

        if @homework.homework_type != 3 && homework_detail_manual.comment_status == 1 && status
          create_works_list @homework
        end

        @hw_status = params[:hw_status].to_i
        if params[:is_manage] == "1"
          redirect_to user_manage_homeworks_user_path(User.current.id)
        elsif params[:is_manage] == "2"
          redirect_to user_receive_homeworks_user_path(User.current.id)
        elsif @hw_status == 1
          redirect_to user_course_community_path(User.current.id)
        elsif @hw_status == 2
          redirect_to course_path(@course.id)
        elsif @hw_status == 5
          redirect_to student_work_index_url(:homework => @homework.id)
        else
          redirect_to homework_common_index_path(:course => @course.id)
        end
      end
    end
  end

  def destroy
    if @homework.destroy
      #更新CourseHomeworkStatistics中每个学生的未交作品数、已交作品数、迟交作品数
      hw_count = @course.homework_commons.includes(:homework_detail_manual).where("homework_detail_manuals.comment_status > 0").count
      homework_ids = @course.homework_commons.empty? ? "(-1)" : "(" + @course.homework_commons.map{|hw| hw.id}.join(",") + ")"
      student_works = StudentWork.where("homework_common_id in #{homework_ids} and work_status !=0")
      is_eva_homeworks = @course.homework_commons.includes(:homework_detail_manual).where("homework_commons.anonymous_comment = 0 and homework_detail_manuals.comment_status = 2")
      is_eva_student_works = StudentWork.where(:homework_common_id => is_eva_homeworks.map{|hw| hw.id})
      has_eva_homeworks = @course.homework_commons.includes(:homework_detail_manual).where("homework_commons.anonymous_comment = 0 and homework_detail_manuals.comment_status = 3")
      has_eva_student_works = StudentWork.where(:homework_common_id => has_eva_homeworks.map{|hw| hw.id})
      @course.student.each do |student|
        user = student.student
        course_statistics = CourseHomeworkStatistics.find_by_course_id_and_user_id(@homework.course_id, student.student_id)
        if user && course_statistics
          committed_work_num = user.student_works.where("homework_common_id in #{homework_ids} and work_status != 0").count
          un_commit_work_num = (hw_count - committed_work_num) < 0 ? 0 : (hw_count - committed_work_num)
          late_commit_work_num = user.student_works.where("homework_common_id in #{homework_ids} and work_status = 2").count
          absence_evaluation_work_num = user.student_works_evaluation_distributions.where(:student_work_id => has_eva_student_works.map(&:id)).count -
              user.student_works_scores.where(:reviewer_role => 3, :student_work_id => has_eva_student_works.map(&:id)).group_by(&:student_work_id).count
          absence_evaluation_work_num = absence_evaluation_work_num < 0 ? 0 : absence_evaluation_work_num
          un_evaluation_work_num = user.student_works_evaluation_distributions.where(:student_work_id => is_eva_student_works.map(&:id)).count -
              user.student_works_scores.where(:reviewer_role => 3, :student_work_id => is_eva_student_works.map(&:id)).group_by(&:student_work_id).count
          un_evaluation_work_num = un_evaluation_work_num < 0 ? 0 : un_evaluation_work_num
          appeal_num = user.student_works_scores.where(:student_work_id => student_works.map(&:id), :appeal_status => 3).count
          average_score = user.student_works.where(:id => student_works.map(&:id)).select("AVG(student_works.work_score) as score").first ? user.student_works.where(:id => student_works.map(&:id)).select("AVG(student_works.work_score) as score").first.score : 0
          total_score = user.student_works.where(:id => student_works.map(&:id)).select("SUM(student_works.work_score) as score").first ? user.student_works.where(:id => student_works.map(&:id)).select("SUM(student_works.work_score) as score").first.score : 0
          course_statistics.update_attributes(:committed_work_num => committed_work_num, :un_commit_work_num => un_commit_work_num,
                                         :late_commit_work_num => late_commit_work_num, :absence_evaluation_work_num => absence_evaluation_work_num, :un_evaluation_work_num => un_evaluation_work_num,
                                         :appeal_num => appeal_num, :average_score => average_score, :total_score => total_score)
        end
      end

      respond_to do |format|
        format.html {
          @hw_status = params[:hw_status].to_i
          if @hw_status == 1
          redirect_to user_path(User.current.id)
          elsif @hw_status == 2
          redirect_to course_path(@course.id)
          else
          redirect_to homework_common_index_path(:course => @course.id)
          end
        }
      end
    end
  end

  # 成绩公开范围弹框
  def alert_score_open_modal
    if params[:user_activity_id]
      @user_activity_id = params[:user_activity_id]
    else
      @user_activity_id = -1
    end
    @hw_status = params[:hw_status].to_i
  end

  def set_score_open
    @homework.update_attribute('score_open', params[:score_open].to_i)
    @user_activity_id = params[:user_activity_id].to_i
    @hw_status = params[:hw_status].to_i
    @is_teacher = User.current.admin? || User.current.allowed_to?(:as_teacher, @course)
  end

  #开启匿评
  #statue 1:启动成功，2：启动失败，作业总数大于等于2份时才能启动匿评，3:已开启匿评，请务重复开启,4:没有开启匿评的权限
  def start_anonymous_comment
    @statue = 4 and return unless User.current.admin? || User.current.allowed_to?(:as_teacher,@course)
    @statue = 5 and return if Time.parse(@homework.end_time.to_s).strftime("%Y-%m-%d") >= Time.now.strftime("%Y-%m-%d")
    if @homework_detail_manual.comment_status == 1
      student_works = @homework.student_works.has_committed
      if student_works && student_works.size >= 2
        if @homework.homework_type == 3
          student_work_projects = @homework.student_work_projects.where("student_work_id is not null")
          student_work_projects.each_with_index do |pro_work, pro_index|
            n = @homework_detail_manual.evaluation_num
            n = (n < student_works.size && n != -1) ? n : student_works.size - 1
            work_index = -1
            student_works.each_with_index do |stu_work, stu_index|
              if stu_work.id.to_i == pro_work.student_work_id.to_i
                work_index = stu_index
              end
            end
            assigned_homeworks = get_assigned_homeworks(student_works, n, work_index)
            assigned_homeworks.each do |h|
              student_works_evaluation_distributions = StudentWorksEvaluationDistribution.new(user_id: pro_work.user_id, student_work_id: h.id)
              student_works_evaluation_distributions.save
            end

            #更新CourseHomeworkStatistics中该学生的待匿评数
            course_statistics = CourseHomeworkStatistics.find_by_course_id_and_user_id(@homework.course_id, pro_work.user_id)
            course_statistics.update_attribute('un_evaluation_work_num', course_statistics.un_evaluation_work_num + n) if course_statistics
          end
        else
          student_works.each_with_index do |work, index|
            user = work.user
            n = @homework_detail_manual.evaluation_num
            n = (n < student_works.size && n != -1) ? n : student_works.size - 1
            assigned_homeworks = get_assigned_homeworks(student_works, n, index)
            assigned_homeworks.each do |h|
              student_works_evaluation_distributions = StudentWorksEvaluationDistribution.new(user_id: user.id, student_work_id: h.id)
              student_works_evaluation_distributions.save
            end

            #更新CourseHomeworkStatistics中该学生的待匿评数
            course_statistics = CourseHomeworkStatistics.find_by_course_id_and_user_id(@homework.course_id, user.id)
            course_statistics.update_attribute('un_evaluation_work_num', course_statistics.un_evaluation_work_num + n) if course_statistics
          end
        end
        @homework_detail_manual.update_column('comment_status', 2)
        @homework_detail_manual.update_column('evaluation_start', Date.today)
        @statue = 1
        # 匿评开启消息邮件通知
        send_message_anonymous_comment(@homework, m_status = 2)
        # Mailer.send_mail_anonymous_comment_open(@homework).deliver
      else
        @statue = 2

    end
    else
      @statue = 3
    end
    @user_activity_id = params[:user_activity_id].to_i
    @hw_status = params[:hw_status].to_i
    @is_teacher = User.current.admin? || User.current.allowed_to?(:as_teacher, @course)
  end

  #关闭匿评
  def stop_anonymous_comment
    @homework_detail_manual.update_column('comment_status', 3)
    @homework_detail_manual.update_column('evaluation_end', Date.today)
    # 计算缺评扣分
    work_ids = "(" + @homework.student_works.has_committed.map(&:id).join(",") + ")"

    # 参与匿评的缺评计算
    @homework.student_works.where("work_status != 0").each do |student_work|
      absence_penalty_count =  student_work.user.student_works_evaluation_distributions.where("student_work_id IN #{work_ids}").count - student_work.user.student_works_scores.where("student_work_id IN #{work_ids} and reviewer_role = 3").count
      student_work.absence_penalty = absence_penalty_count > 0 ? absence_penalty_count * @homework_detail_manual.absence_penalty : 0
      student_work.save

      #更新CourseHomeworkStatistics中该学生的待匿评数和缺评数
      course_statistics = CourseHomeworkStatistics.find_by_course_id_and_user_id(@homework.course_id, student_work.user_id)
      course_statistics.update_attribute('un_evaluation_work_num', (course_statistics.un_evaluation_work_num - absence_penalty_count) < 0 ? 0 : (course_statistics.un_evaluation_work_num - absence_penalty_count)) if course_statistics
      course_statistics.update_attribute('absence_evaluation_work_num', course_statistics.absence_evaluation_work_num + absence_penalty_count) if course_statistics
    end

    # 未参与匿评的缺评计算
    if @homework_detail_manual.no_anon_penalty == 0
      all_dis_eva = StudentWorksEvaluationDistribution.where("student_work_id IN #{work_ids}")
      has_sw_count = all_dis_eva.select("distinct user_id").count
      anon_count = all_dis_eva.count / has_sw_count
      @homework.student_works.where("work_status != 0").each do |student_work|
        if student_work.user.student_works_evaluation_distributions.where("student_work_id IN #{work_ids}").count == 0
          student_work.absence_penalty = @homework_detail_manual.absence_penalty * anon_count
          student_work.save
        end
      end
    end

    # 匿评关闭消息邮件通知
    send_message_anonymous_comment(@homework, m_status = 3)
    # Mailer.send_mail_anonymous_comment_close(@homework).deliver
    @user_activity_id = params[:user_activity_id].to_i
    @hw_status = params[:hw_status].to_i
    @is_teacher = User.current.admin? || User.current.allowed_to?(:as_teacher, @course)
    respond_to do |format|
      format.js
    end
  end

  # 开启/关闭匿评消息通知
  def send_message_anonymous_comment(homework, m_status )
     # status 标记匿评状态 1为关闭 0为开启
     course = homework.course
     course.members.each do |m|
       @homework.course_messages << CourseMessage.new(:user_id => m.user_id, :course_id => course.id, :viewed => false, :status => m_status)
     end
  end
  #提示
  def alert_anonymous_comment
    @cur_size = 0
    @totle_size = 0
    @work_size = 0
    if @homework_detail_manual.comment_status == 1
      @totle_size = @course.student.count
      @cur_size = @homework.student_works.where("work_status != 0").size
      @work_size = @homework.student_works.has_committed.size
    elsif @homework_detail_manual.comment_status == 2
      @homework.student_works.has_committed.map { |work| @totle_size += work.student_works_evaluation_distributions.count}
      @cur_size = 0
      @homework.student_works.has_committed.map { |work| @cur_size += work.student_works_scores.select("distinct user_id").where(:reviewer_role => 3).count}
    end
    @percent = format("%.2f",(@cur_size.to_f / ( @totle_size == 0 ? 1 : @totle_size)) * 100)
    @user_activity_id = params[:user_activity_id].to_i
    @hw_status = params[:hw_status].to_i
    respond_to do |format|
      format.js
    end
  end

  def alert_forbidden_anonymous_comment
    if params[:user_activity_id]
      @user_activity_id = params[:user_activity_id]
    else
      @user_activity_id = -1
    end
    @hw_status = params[:hw_status].to_i
    respond_to do |format|
      format.js
    end
  end

  def open_student_works
    if @homework.is_open == 0
      @homework.update_column('is_open', 1)
    else
      @homework.update_column('is_open', 0)
    end
    @user_activity_id = params[:user_activity_id]
    @hw_status = params[:hw_status].to_i
    @is_teacher = User.current.admin? || User.current.allowed_to?(:as_teacher,@course)
  end

  def alert_open_student_works
    if params[:user_activity_id]
      @user_activity_id = params[:user_activity_id]
    else
      @user_activity_id = -1
    end
    @hw_status = params[:hw_status].to_i
    respond_to do |format|
      format.js
    end
  end

  def programing_test
    test = {language:params[:language],src:Base64.encode64(params[:src]),input:[params[:input]],output:[params[:output]]}
    @index = params[:index]
    uri = URI('http://192.168.80.21:8080/api/realtime.json')
    body = test.to_json
    res = Net::HTTP.new(uri.host, uri.port).start do |client|
      request                 = Net::HTTP::Post.new(uri.path)
      request.body            = body
      request["Content-Type"] = "application/json"
      client.request(request)
    end
    result = JSON.parse(res.body)
    @err_msg = result["compile_error_msg"]
    result["results"].each do |re|
      @result = re["status"]
    end
  end

  #启动匿评参数设置
  def start_evaluation_set
    if params[:user_activity_id]
      @user_activity_id = params[:user_activity_id]
    else
      @user_activity_id = -1
    end
    @hw_status = params[:hw_status].to_i
  end

  #设置匿评参数
  def set_evaluation_attr
    if @homework_detail_manual
      unless params[:evaluation_start].to_s == @homework_detail_manual.evaluation_start.to_s
        @homework_detail_manual.evaluation_start = params[:evaluation_start]
      end

      unless @homework_detail_manual.evaluation_end.to_s == params[:evaluation_end].to_s
        @homework_detail_manual.evaluation_end = params[:evaluation_end]
      end

      evaluation_num = @homework_detail_manual.evaluation_num
      if params[:evaluation_limit].to_i == 1
        @homework_detail_manual.evaluation_num = params[:evaluation_num]
        @homework_detail_manual.absence_penalty = evaluation_num == -1 ? 5 : @homework_detail_manual.absence_penalty
      else
        @homework_detail_manual.evaluation_num = -1
        @homework_detail_manual.absence_penalty = 0
      end
      @homework_detail_manual.save
      @user_activity_id = params[:user_activity_id].to_i
      @hw_status = params[:hw_status].to_i
      @is_teacher = User.current.admin? || User.current.allowed_to?(:as_teacher,@course)
    end
  end

  #评分设置
  def score_rule_set
    if params[:user_activity_id]
      @user_activity_id = params[:user_activity_id]
    else
      @user_activity_id = -1
    end
    @hw_status = params[:hw_status].to_i
  end

  private
  #获取课程
  def find_course
    @course = Course.find params[:course]
  rescue
    render_404
  end
  #获取作业
  def find_homework
    @homework = HomeworkCommon.find params[:id]
    @homework_detail_manual = @homework.homework_detail_manual
    @homework_detail_programing = @homework.homework_detail_programing
    @homework_detail_group = @homework.homework_detail_group
    @course = @homework.course
  rescue
    render_404
  end
  #是不是课程的老师
  def teacher_of_course
    render_403 unless User.current.allowed_to?(:as_teacher,@course) || User.current.admin?
  end

  #当前用户是不是课程的成员
  def member_of_course
    render_403 unless @course.is_public==1 || User.current.member_of_course?(@course) || User.current.admin?
  end

  def get_assigned_homeworks(student_works, n, index)
    student_works += student_works
    student_works[index + 1 .. index + n]
  end

  def update_homework_time homeworks
    unless homeworks.nil?
      homeworks.each do |h|
        if h.homework_type == 3 && h.homework_detail_group.base_on_project == 1
          student_works = h.student_work_projects.where("is_leader = 1 && project_id != -1")
          time = h.updated_at
          unless student_works.nil?
            student_works.each do |s|
              project = Project.find s.project_id
              unless project.nil? && project.gpid.nil?
                project_time=project.updated_on
                project_time=ForgeActivity.where("project_id=?",project.id).last.updated_at if ForgeActivity.where("project_id=?",project.id).last
                if time.strftime('%Y-%m-%d %H:%M:%S') < project_time.strftime('%Y-%m-%d %H:%M:%S')
                  time = project_time
                end
                begin
                  # gitlab端获取默认分支
                  g = Gitlab.client
                  default_branch = g.project(project.gpid).default_branch
                  changesets = g.commits(project.gpid, :ref_name => default_branch)
                  changesets_latest_coimmit = changesets[0]
                  unless changesets[0].blank?
                    if time.strftime('%Y-%m-%d %H:%M:%S') <changesets_latest_coimmit.created_at.strftime('%Y-%m-%d %H:%M:%S')
                      time = changesets_latest_coimmit.created_at
                    end
                  end
                rescue
                end
              end
            end
          end
          s_time = time
          if time.strftime('%Y-%m-%d %H:%M:%S') > h.updated_at.strftime('%Y-%m-%d %H:%M:%S')
            h.update_column('updated_at', s_time)
            course_activity = CourseActivity.where("course_act_type=? and course_act_id =?", 'HomeworkCommon', h.id).first
            if course_activity && (time.strftime('%Y-%m-%d %H:%M:%S') > course_activity.updated_at.strftime('%Y-%m-%d %H:%M:%S'))
              course_activity.update_column('updated_at', s_time)
            end
            user_activity = UserActivity.where("act_type=? and act_id =?", 'HomeworkCommon', h.id).first
            if user_activity && (time.strftime('%Y-%m-%d %H:%M:%S') > user_activity.updated_at.strftime('%Y-%m-%d %H:%M:%S'))
              user_activity.update_column('updated_at', s_time)
            end
            org_activity = OrgActivity.where("org_act_type=? and org_act_id =?", 'HomeworkCommon', h.id).first
            if org_activity && (time.strftime('%Y-%m-%d %H:%M:%S') > org_activity.updated_at.strftime('%Y-%m-%d %H:%M:%S'))
              org_activity.update_column('updated_at', s_time)
            end
          end
        end
      end
    end
  end
end