educoder/lib/tasks/homework_evaluation.rake

#coding=utf-8

namespace :homework_evaluation do
  desc "start and end evaluation"

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

  #自动开启匿评的任务
  task :start_evaluation => :environment do
    Rails.logger.info("log--------------------------------start_evaluation start")
    puts "--------------------------------start_evaluation start"
    homework_detail_manuals = HomeworkDetailManual.where("evaluation_start <= '#{Time.now}' and
                            (homework_detail_manuals.comment_status < 3)")
    homework_detail_manuals.each do |homework_detail_manual|
      homework_common = homework_detail_manual.homework_common
      if homework_common.anonymous_comment
        if homework_common.homework_group_settings.where("end_time is null or end_time > '#{Time.now}'").count == 0
          if homework_common.homework_type == "group"
            student_works = homework_common.student_works.where("work_status != 0").group(:group_id)
          else
            student_works = homework_common.student_works.has_committed
          end
          if student_works.present? && student_works.length >= 2
            if homework_common.homework_type == "group"
              student_work_projects = homework_common.student_works.where("work_status != 0").shuffle
              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.group_id.to_i == pro_work.group_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_common.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 = student_works.shuffle
              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_common.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', 3)
            # 匿评开启消息邮件通知，# 所有人
            str = ""
            homework_common.course.course_members.pluck(:user_id).uniq.each do |user_id|
              str += "," if str != ""
              str += "('#{user_id}', '#{homework_common.user_id}', '#{homework_common.id}','HomeworkCommon','#{homework_common.id}',
                      'AnonymousComment',#{homework_common.course_id},'Course',0,'HomeworkCommon',
                      '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}', '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}')"
            end
            if str != ""
              sql = "insert into tidings (user_id,trigger_user_id,container_id, container_type, parent_container_id,
                     parent_container_type, belong_container_id, belong_container_type, viewed, tiding_type, created_at, updated_at) values" + str
              ActiveRecord::Base.connection.execute sql
            end
          else
            #作业数小于2，启动失败, 只给老师和助教发
            extra = "作品数量低于两个，无法开启匿评"
          end
        else
          extra = "存在尚未截止的分班，无法开启匿评"
        end
        if extra.present?
          str = ''
          homework_common.course.teachers.each do |mem|
            str += "," if str != ""
            str += "('#{mem.user.id}', '#{homework_common.user_id}', '#{homework_common.id}','HomeworkCommon','#{homework_common.id}',
                    'AnonymousCommentFail',#{homework_common.course_id},'Course',0,'System','#{extra}',
                    '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}', '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}')"
          end
          if str != ""
            sql = "insert into tidings (user_id,trigger_user_id,container_id, container_type,parent_container_id,
                   parent_container_type, belong_container_id, belong_container_type, viewed, tiding_type, extra, created_at,
                   updated_at) values" + str
            ActiveRecord::Base.connection.execute sql
          end
          homework_detail_manual.update_attributes(:evaluation_start => nil, :evaluation_end => nil, :absence_penalty => 0,
                                                   :evaluation_num => 0, :appeal_time => nil, :appeal_penalty => 0)
          homework_common.update_attributes(:anonymous_comment => 0, :anonymous_appeal => 0)
        end
      end
    end

    Rails.logger.info("log--------------------------------start_evaluation end")
    puts "--------------------------------start_evaluation end"
  end

  #自动关闭匿评的任务
  task :end_evaluation => :environment do
    homework_detail_manuals = HomeworkDetailManual.where("evaluation_end <= '#{Time.now}' and homework_detail_manuals.comment_status = 3")
    homework_detail_manuals.each do |homework_detail_manual|
      homework_common = homework_detail_manual.homework_common
      if homework_common.anonymous_comment #开启匿评状态才可关闭匿评
        #计算缺评扣分 参与匿评
        work_ids = "(" + homework_common.student_works.has_committed.map(&:id).join(",") + ")"

        homework_common.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
          # absence_penalty_count = absence_penalty_count > 0 ? absence_penalty_count : 0
          # course_statistics = CourseHomeworkStatistics.find_by_course_id_and_user_id(homework_common.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
        if homework_common.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_common.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

        if homework_common.anonymous_appeal
          homework_detail_manual.update_column('comment_status', 4)
          # 申诉开启
          eva_distribution = StudentWorksEvaluationDistribution.where(:student_work_id => homework_common.student_works.pluck(:id))
          str = ""
          eva_distribution.pluck(:user_id).uniq.each do |user_id|
            str += "," if str != ""
            str += "(#{user_id}, #{homework_common.user_id}, #{homework_common.id}, 'HomeworkCommon', #{homework_common.id},
                    'AnonymousAppeal', #{homework_common.course_id}, 'Course', 0, 'HomeworkCommon',
                    '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}', '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}')"
          end
          if str != ""
            sql = "insert into tidings (user_id,trigger_user_id,container_id, container_type, parent_container_id,
                    parent_container_type, belong_container_id, belong_container_type, viewed, tiding_type, created_at, updated_at) values" + str
            ActiveRecord::Base.connection.execute sql
          end
        else
          homework_detail_manual.update_column('comment_status', 5)
        end
        # 匿评关闭消息通知 给所有人发
        # course = homework_common.course
        # course.members.each do |m|
        #   homework_common.course_messages << CourseMessage.new(:user_id => m.user_id, :course_id => course.id, :viewed => false, :status => 3)
        # end
        # 邮件通知
        # Mailer.send_mail_anonymous_comment_close(homework_common).deliver
      end
    end
  end

  #自动关闭申诉的任务
  task :end_appeal => :environment do
    homework_detail_manuals = HomeworkDetailManual.where("appeal_time <= '#{Time.now}' and homework_detail_manuals.comment_status = 4")
    homework_detail_manuals.update_all(:comment_status => 5)
  end
end