socialforge/app/controllers/student_work_controller.rb

class StudentWorkController < ApplicationController
  layout "base_courses"
  include StudentWorkHelper
  require 'bigdecimal'
  require "base64"
  before_filter :find_homework, :only => [:new, :index, :create, :student_work_absence_penalty, :absence_penalty_list, :evaluation_list, :program_test]
  before_filter :find_work, :only => [:edit, :update, :show, :destroy, :add_score, :praise_student_work]
  before_filter :member_of_course, :only => [:index, :new, :create, :show, :add_score, :praise_student_work]
  before_filter :author_of_work, :only => [:edit, :update, :destroy]
  before_filter :teacher_of_course, :only => [:student_work_absence_penalty, :absence_penalty_list, :evaluation_list]
  protect_from_forgery :except => :set_program_score

  ### 
  def program_test
    is_test = params[:is_test] == 'true'
    resultObj = {status: 0, results: [], error_msg: '', time: Time.now.strftime('%Y-%m-%d %T')}

      student_work = find_or_save_student_work(is_test)

      unless student_work
        resultObj[:status] = 100
      else 
        if @homework.homework_type == 2 && @homework.homework_detail_programing     
          result = test_realtime(student_work, params[:src])
          logger.debug result
          resultObj[:status] = result["status"]
          resultObj[:results] = result["results"]
          resultObj[:error_msg] = result["error_msg"]
          results = result["results"]
          if result["status"].to_i == -2 #编译错误
            results = [result["error_msg"]]
          end
          student_work_test = student_work.student_work_tests.build(status: result["status"],  results: results,
            src: params[:src])
          unless student_work.save
            resultObj[:status] = 200
          else
            resultObj[:status] = result["status"].to_i
            resultObj[:time] = student_work_test.created_at.to_s(:db)
            resultObj[:index] = student_work.student_work_tests.count
          end

        end
      end
    
    render :json => resultObj
  end

  def index
    # 作业消息状态更新
    @homework.course_messages.each do |homework_message|
      if User.current.id == homework_message.user_id && homework_message.viewed == 0
        homework_message.update_attributes(:viewed => true) if homework_message.viewed == 0
      end
    end
    # 作品打分消息状态更新
    studentworks_scores = CourseMessage.where("user_id =? and course_id =? and course_message_type =? and viewed =?", User.current.id, @homework.course, "StudentWorksScore", 0)
    studentworks_scores.each do |studentworks_score|
      studentworks_score.update_attributes(:viewed => true) if studentworks_score.viewed == 0
    end
    # 作品评论消息状态更新
    journals_for_teacher = CourseMessage.where("user_id =? and course_id =? and course_message_type =? and viewed =?", User.current.id, @homework.course, "JournalsForMessage", 0)
    journals_for_teacher.each do |journal_for_teacher|
      journal_for_teacher.update_attributes(:viewed => true)
    end
    # 作品留言
    # 消息end
    #设置作业对应的forge_messages表的viewed字段
    query_student_work = @homework.course_messages
    query_student_work.each do |query|
      if User.current.id == query.user_id
        query.update_attributes(:viewed => true)
      end
    end
    ##################################################################################################################
    @order,@b_sort,@name,@group = params[:order] || "score",params[:sort] || "desc",params[:name] || "",params[:group]
    @homework_commons = @course.homework_commons.order("created_at desc")
    @is_teacher = User.current.allowed_to?(:as_teacher,@course) || User.current.admin?
    @is_evaluation = @homework.homework_detail_manual.comment_status == 2 && !@is_teacher #是不是匿评
    if @is_teacher   #老师 || 超级管理员 显示所有列表
      @stundet_works = search_homework_member @homework.student_works.select("student_works.*,IF(final_score is null,null,final_score - absence_penalty - late_penalty) as score").order("#{@order} #{@b_sort}"),@name
    elsif @homework.homework_detail_manual.comment_status == 1  #学生 && 未开启匿评 只看到自己的
      @stundet_works = @homework.student_works.select("student_works.*,IF(final_score is null,null,final_score - absence_penalty - late_penalty) as score").where(:user_id => User.current.id)
    elsif @homework.homework_detail_manual.comment_status == 2  #学生 && 开启匿评  看到匿评列表
      my_work = @homework.student_works.where(:user_id => User.current.id)
      @stundet_works = my_work + User.current.student_works_evaluation_distributions.map(&:student_work).select { |work| work.homework_common_id == @homework.id}
    elsif @homework.homework_detail_manual.comment_status == 3  #学生 && 关闭匿评  未提交作品之前只看到自己的，提交了作品看到所有的
      my_work = @homework.student_works.select("student_works.*,IF(final_score is null,null,final_score - absence_penalty - late_penalty) as score").where(:user_id => User.current.id)
      if my_work.empty?
        @stundet_works = []
      else
        @stundet_works = search_homework_member @homework.student_works.select("student_works.*,IF(final_score is null,null,final_score - absence_penalty - late_penalty) as score").order("#{@order} #{@b_sort}"),@name
      end
    else
      @stundet_works = []
    end
    @score = @b_sort == "desc" ? "asc" : "desc"

    respond_to do |format|
      format.html
      format.xls {
        send_data(homework_to_xls(@stundet_works), :type => "text/excel;charset=utf-8; header=present",
                  :filename => "#{@course.teacher.lastname.to_s + @course.teacher.firstname}_#{@course.name}_#{@course.time.to_s + @course.term}_#{@homework.name}#{l(:excel_homework_list)}.xls")
      }
    end
  end

  def new
    if @homework.homework_type==2
      redirect_to new_user_commit_homework_users_path(homework_id: @homework.id)
      return
    end
    @user = User.current
    @student_work = @homework.student_works.where("user_id = ?",User.current.id).first
    if @student_work.nil?
      @student_work = StudentWork.new
    end
    respond_to do |format|
      format.html{ render :layout => "new_base_user"}
    end
  end

  def create
    if params[:student_work]
      student_work = StudentWork.find(params[:student_work_id]) if params[:student_work_id]
      student_work ||= StudentWork.new
      student_work.name = params[:student_work][:name]
      student_work.description = params[:student_work][:description]
      student_work.project_id = params[:student_work][:project_id]
      student_work.homework_common_id = @homework.id
      student_work.user_id = User.current.id
      student_work.save_attachments(params[:attachments])
      render_attachment_warning_if_needed(student_work)
      #提交作品时，计算是否迟交
      if Time.parse(@homework.end_time.to_s).strftime("%Y-%m-%d") < Time.parse(Time.now.to_s).strftime("%Y-%m-%d")
        student_work.late_penalty = @homework.late_penalty
      else
        student_work.late_penalty = 0
      end

      if student_work.save
        respond_to do |format|
          format.html {
            flash[:notice] = l(:notice_successful_create)
            redirect_to student_work_index_url(:homework => @homework.id)
          }
        end
        return
      end
    end
    respond_to do |format|
      format.html {
        flash[:notice] = l(:notice_failed_create)
        redirect_to new_student_work_url(:homework => @homework.id)
      }
    end
  end

  def edit
    @user = User.current
    if !User.current.admin? && @homework.homework_type == 2   #编程作业不能修改作业
      render_403
    else
      respond_to do |format|
        format.html{ render :layout => "new_base_user"}
      end
    end
  end

  def update
    if params[:student_work]
      @work.name = params[:student_work][:name]
      @work.description = params[:student_work][:description]
      @work.project_id = params[:student_work][:project]
      @work.save_attachments(params[:attachments])
      render_attachment_warning_if_needed(@work)
      if @work.save
        respond_to do |format|
          format.html {
            flash[:notice] = l(:notice_successful_edit)
            redirect_to student_work_index_url(:homework => @homework.id)
          }
        end
        return
      end
    end
    respond_to do |format|
      format.html{redirect_to edit_student_work_url(@work)}
    end
  end

  def show
    @score = student_work_score @work,User.current
    @is_teacher = User.current.allowed_to?(:as_teacher,@course)
    respond_to do |format|
      format.js
    end
  end

  def destroy
    if @homework.homework_type == 2  #编程作业，作品提交后不可以删除
      render_403
    elsif @work.destroy
      respond_to do |format|
        format.html {
          redirect_to student_work_index_url(:homework => @homework.id)
        }
      end
    end
  end

  #添加评分，已评分则为修改评分
  def add_score
    render_403 and return if User.current == @work.user #不可以匿评自己的作品
    @is_teacher = User.current.allowed_to?(:as_teacher,@course)
    #老师、教辅可以随时评分，学生只能在匿评作业的匿评阶段进行评分
    render_403 and return unless @is_teacher || @homework.homework_detail_manual.comment_status == 2
    @score = student_work_score @work,User.current
    if @score
      @score.comment = params[:new_form][:user_message] if params[:new_form] && params[:new_form][:user_message] && params[:new_form][:user_message] != ""
      @score.score = params[:score] if params[:score]
      if User.current.admin?
        @score.reviewer_role = 1
      else
        role = User.current.members.where("course_id = ?",@course.id).first.roles.first.name
        @score.reviewer_role = get_role_by_name(role)
      end
      @is_new = false
    else
      @score = StudentWorksScore.new
      @score.score = params[:score] if params[:score]
      @score.comment = params[:new_form][:user_message] if params[:new_form] && params[:new_form][:user_message] && params[:new_form][:user_message] != ""
      @score.user_id = User.current.id
      @score.student_work_id = @work.id
      if User.current.admin?
        @score.reviewer_role = 1
      else
        role = User.current.members.where("course_id = ?",@course.id).first.roles.first.name
        @score.reviewer_role = get_role_by_name(role)
      end
      @is_new = true
    end

    @score.save_attachments(params[:attachments])
    render_attachment_warning_if_needed(@score)

    if @score.save
      case @score.reviewer_role
        when 1 #教师评分：最后一个教师评分为最终评分
          @work.teacher_score = @score.score
        when 2 #教辅评分 教辅评分显示平均分
          @work.teaching_asistant_score = @work.student_works_scores.where(:reviewer_role => 2).average(:score).try(:round, 2).to_f
        when 3 #学生评分 学生评分显示平均分
          @work.student_score = @work.student_works_scores.where(:reviewer_role => 3).average(:score).try(:round, 2).to_f
      end

      if @work.save
        respond_to do |format|
          format.js
        end
      end
    end
  end

  #添加评分的回复
  def add_score_reply
    @score = StudentWorksScore.find params[:score_id]
    @jour = @score.journals_for_messages.new(:user_id => User.current.id,:notes =>params[:message], :reply_id => 0)
    if @jour.save
      @status = 1
    else
      @status = 2
    end
    respond_to do |format|
      format.js
    end
  end

  #删除评分的回复
  def destroy_score_reply
    @jour = JournalsForMessage.find params[:jour_id]
    if @jour.destroy
      respond_to do |format|
        format.js
      end
    end
  end

  #为作品点赞
  def praise_student_work
    pt = PraiseTread.new
    pt.user_id = User.current.id
    pt.praise_tread_object_id = @work.id
    pt.praise_tread_object_type = "StudentWork"
    pt.praise_or_tread = 1
    if pt.save
      respond_to do |format|
        format.js
      end
    else
      render_404
    end
  end

  #缺评列表显示
  def student_work_absence_penalty
    order = params[:order] || "desc"
    if @homework.student_works.empty?
      @stundet_works = []
    else
      work_ids = "(" + @homework.student_works.map(&:id).join(",") + ")"
      @stundet_works = StudentWork.find_by_sql("SELECT *,(all_count - has_count) AS absence FROM(
      SELECT * ,
        (SELECT COUNT(*) FROM `student_works_evaluation_distributions` WHERE user_id = student_works.user_id AND student_work_id IN #{work_ids}) AS all_count,
        (SELECT COUNT(*) FROM `student_works_scores` WHERE user_id = student_works.user_id AND student_work_id IN #{work_ids}) AS has_count
      FROM `student_works`
      WHERE homework_common_id = #{@homework.id}
      ) AS table_1
      ORDER BY absence #{order}")
    end
    @order = order == "desc" ? "asc" : "desc"
    respond_to do |format|
      format.html
    end
  end

  #导出缺评列表
  def absence_penalty_list
    if @homework.student_works.empty?
      @stundet_works = []
    else
      work_ids = "(" + @homework.student_works.map(&:id).join(",") + ")"
      @stundet_works = StudentWork.find_by_sql("SELECT * FROM (SELECT *,(all_count - has_count) AS absence FROM(
      SELECT * ,
        (SELECT COUNT(*) FROM `student_works_evaluation_distributions` WHERE user_id = student_works.user_id AND student_work_id IN #{work_ids}) AS all_count,
        (SELECT COUNT(*) FROM `student_works_scores` WHERE user_id = student_works.user_id AND student_work_id IN #{work_ids}) AS has_count
      FROM `student_works`
      WHERE homework_common_id = #{@homework.id}
      ) AS table_1) AS table_2
      where absence > 0 order by absence")
    end
    respond_to do |format|
      format.xls {
        send_data(absence_penalty_list_xls(@stundet_works), :type => "text/excel;charset=utf-8; header=present",
                  :filename => "#{@course.teacher.lastname.to_s + @course.teacher.firstname}_#{@course.name}_#{@course.time.to_s + @course.term}_#{@homework.name}#{l(:excel_absence_list)}.xls")
      }
    end
  end

  #导出匿评列表
  def evaluation_list
    respond_to do |format|
      format.xls {
        send_data(evaluation_list_xls(@homework.student_works), :type => "text/excel;charset=utf-8; header=present",
                  :filename => "#{@course.teacher.lastname.to_s + @course.teacher.firstname}_#{@course.name}_#{@course.time.to_s + @course.term}_#{@homework.name}#{l(:excel_evaluation_list)}.xls")
      }
    end
  end

  #设置编程作业得分
  def set_program_score
    stundet_work = StudentWork.find_by_id params[:student_work_id]
    @course = stundet_work.homework_common.course
    student_score_count = 0
    if stundet_work && params[:results] && params[:results].class.to_s == "Array"
      homework_common = stundet_work.homework_common
      params[:results].each do |result|
        homework_tests = homework_common.homework_tests.where("input = '#{result[:input]}' AND output = '#{result[:output]}'")
        homework_tests.each do |homework_test|
          student_work_test = StudentWorkTest.new
          student_work_test.student_work = stundet_work
          student_work_test.homework_test = homework_test
          student_work_test.result = result[:status]
          if student_work_test.result == 0
            student_score_count += 1
          end
          student_work_test.error_msg = params[:compile_error_msg]
          student_work_test.save!
        end
      end
      unless homework_common.homework_tests.empty?
        stundet_work.student_score = student_score_count * 100.0 / homework_common.homework_tests.count

        if stundet_work.teacher_score.nil?
          if stundet_work.teaching_asistant_score.nil?
            stundet_work.final_score = stundet_work.student_score
          else
            final_ta_score = BigDecimal.new("#{stundet_work.teaching_asistant_score}") * BigDecimal.new("#{homework_common.homework_detail_programing.ta_proportion}")
            final_s_score = BigDecimal.new("#{stundet_work.student_score}") * (BigDecimal.new('1.0')  - BigDecimal.new("#{homework_common.homework_detail_programing.ta_proportion}"))
            final_score = final_ta_score + final_s_score
            stundet_work.final_score = format("%.1f",final_score.to_f)
          end
        end

        stundet_work.save!
      end
    end
  end

  private
  #获取作业
  def find_homework
    @homework = HomeworkCommon.find params[:homework]
    @course = @homework.course
  rescue
    render_404
  end
  #获取作品
  def find_work
    @work = StudentWork.find params[:id]
    @homework = @work.homework_common
    @course = @homework.course
  rescue
    render_404
  end

  #是不是当前课程的成员
  #当前课程成员才可以看到作品列表
  def member_of_course
    render_403 unless User.current.member_of_course?(@course) || User.current.admin?
  end

  #判断是不是当前作品的提交者
  #提交者 && (非匿评作业 || 未开启匿评) 可以编辑作品
  def author_of_work
    render_403 unless User.current.admin? || (User.current.id == @work.user_id && @homework.homework_type != 1 || @homework.homework_detail_manual.comment_status == 1 )
  end

  def teacher_of_course
    render_403 unless User.current.allowed_to?(:as_teacher,@course)
  end

  #根据条件过滤作业结果
  def search_homework_member homeworks,name
    if name == ""
      select_homework = homeworks
    else
      name = name.downcase
      select_homework = homeworks.select{ |homework|
        homework.user[:login].to_s.downcase.include?(name) ||  homework.user.user_extensions[:student_id].to_s.downcase.include?(name) || (homework.user[:lastname].to_s.downcase + homework.user[:firstname].to_s.downcase).include?(name)
      }
    end
    select_homework
  end

  #作品列表转换为excel
  def homework_to_xls items
    xls_report = StringIO.new
    book = Spreadsheet::Workbook.new
    sheet1 = book.create_worksheet :name => "homework"
    blue = Spreadsheet::Format.new :color => :blue, :weight => :bold, :size => 10
    sheet1.row(0).default_format = blue
    if @homework.homework_type == 0 #普通作业
      sheet1.row(0).concat([l(:excel_user_id),l(:excel_user_name),l(:excel_nickname),l(:excel_student_id),l(:excel_mail),l(:excel_homework_name),
                            l(:excel_t_score),l(:excel_ta_score),l(:excel_f_score),l(:excel_commit_time)])
      count_row = 1
      items.each do |homework|
        sheet1[count_row,0]=homework.user.id
        sheet1[count_row,1] = homework.user.lastname.to_s + homework.user.firstname.to_s
        sheet1[count_row,2] = homework.user.login
        sheet1[count_row,3] = homework.user.user_extensions.student_id
        sheet1[count_row,4] = homework.user.mail
        sheet1[count_row,5] = homework.name
        sheet1[count_row,6] = homework.teacher_score.nil? ? l(:label_without_score) : format("%.2f",homework.teacher_score)
        sheet1[count_row,7] = homework.teaching_asistant_score.nil? ? l(:label_without_score) : format("%.2f",homework.teaching_asistant_score)
        # sheet1[count_row,8] = homework.student_score.nil? ? l(:label_without_score) : format("%.2f",homework.student_score)
        sheet1[count_row,8] = homework.respond_to?("score") ? homework.score.nil? ? l(:label_without_score) : format("%.2f",homework.score) : l(:label_without_score)
        sheet1[count_row,9] = format_time(homework.created_at)
        count_row += 1
      end
    elsif @homework.homework_type == 1 #匿评作业
      sheet1.row(0).concat([l(:excel_user_id),l(:excel_user_name),l(:excel_nickname),l(:excel_student_id),l(:excel_mail),l(:excel_homework_name),
                            l(:excel_t_score),l(:excel_ta_score), l(:excel_n_score),l(:excel_f_score),l(:excel_commit_time)])
      count_row = 1
      items.each do |homework|
        sheet1[count_row,0]=homework.user.id
        sheet1[count_row,1] = homework.user.lastname.to_s + homework.user.firstname.to_s
        sheet1[count_row,2] = homework.user.login
        sheet1[count_row,3] = homework.user.user_extensions.student_id
        sheet1[count_row,4] = homework.user.mail
        sheet1[count_row,5] = homework.name
        sheet1[count_row,6] = homework.teacher_score.nil? ? l(:label_without_score) : format("%.2f",homework.teacher_score)
        sheet1[count_row,7] = homework.teaching_asistant_score.nil? ? l(:label_without_score) : format("%.2f",homework.teaching_asistant_score)
        sheet1[count_row,8] = homework.student_score.nil? ? l(:label_without_score) : format("%.2f",homework.student_score)
        sheet1[count_row,9] = homework.respond_to?("score") ? homework.score.nil? ? l(:label_without_score) : format("%.2f",homework.score) : l(:label_without_score)
        sheet1[count_row,10] = format_time(homework.created_at)
        count_row += 1
      end
    elsif @homework.homework_type == 2 #编程作业
      sheet1.row(0).concat([l(:excel_user_id),l(:excel_user_name),l(:excel_nickname),l(:excel_student_id),l(:excel_mail),l(:excel_homework_name),
                            l(:excel_t_score),l(:excel_ta_score), l(:excel_s_score),l(:excel_f_score),l(:excel_commit_time)])
      count_row = 1
      items.each do |homework|
        sheet1[count_row,0]=homework.user.id
        sheet1[count_row,1] = homework.user.lastname.to_s + homework.user.firstname.to_s
        sheet1[count_row,2] = homework.user.login
        sheet1[count_row,3] = homework.user.user_extensions.student_id
        sheet1[count_row,4] = homework.user.mail
        sheet1[count_row,5] = homework.name
        sheet1[count_row,6] = homework.teacher_score.nil? ? l(:label_without_score) : format("%.2f",homework.teacher_score)
        sheet1[count_row,7] = homework.teaching_asistant_score.nil? ? l(:label_without_score) : format("%.2f",homework.teaching_asistant_score)
        sheet1[count_row,8] = homework.student_score.nil? ? l(:label_without_score) : format("%.2f",homework.student_score)
        sheet1[count_row,9] = homework.respond_to?("score") ? homework.score.nil? ? l(:label_without_score) : format("%.2f",homework.score) : l(:label_without_score)
        sheet1[count_row,10] = format_time(homework.created_at)
        count_row += 1
      end
    end
    book.write xls_report
    xls_report.string
  end

  #缺评列表转换为excel
  def absence_penalty_list_xls items
    xls_report = StringIO.new
    book = Spreadsheet::Workbook.new
    sheet1 = book.create_worksheet :name => "homework"
    blue = Spreadsheet::Format.new :color => :blue, :weight => :bold, :size => 10
    sheet1.row(0).default_format = blue

    sheet1.row(0).concat([l(:excel_student_id),l(:excel_nickname),l(:excel_user_name),l(:lable_all_penalty),l(:lable_has_penalty),l(:lable_absence_penalty)])
    count_row = 1
    items.each do |homework|
      sheet1[count_row,0] = homework.user.user_extensions.student_id
      sheet1[count_row,1] = homework.user.login
      sheet1[count_row,2] = homework.user.lastname.to_s + homework.user.firstname.to_s
      sheet1[count_row,3] = homework.all_count
      sheet1[count_row,4] = homework.has_count
      sheet1[count_row,5] = homework.absence
      count_row += 1
    end
    book.write xls_report
    xls_report.string
  end

  #匿评列表转换为excel
  def evaluation_list_xls items
    xls_report = StringIO.new
    book = Spreadsheet::Workbook.new
    sheet1 = book.create_worksheet :name => "homework"
    blue = Spreadsheet::Format.new :color => :blue, :weight => :bold, :size => 10
    sheet1.row(0).default_format = blue

    sheet1.row(0).concat([l(:label_work_name),l(:label_work_id),l(:label_work_autor),l(:label_evaluation_id),l(:label_evaluation_name),
                          l(:label_evaluation_score),l(:label_evaluation_common),l(:label_evaluation_time)])
    count_row = 1
    items.each do |homework|
      homework.student_works_scores.where(:reviewer_role => 3).each do |score|
        sheet1[count_row,0] = homework.name
        sheet1[count_row,1] = homework.user.user_extensions.student_id
        sheet1[count_row,2] = homework.user.show_name
        sheet1[count_row,3] = score.user.user_extensions.student_id
        sheet1[count_row,4] = score.user.show_name
        sheet1[count_row,5] = score.score
        sheet1[count_row,6] = score.comment
        sheet1[count_row,7] = format_time(score.created_at)
        count_row += 1
      end
    end
    book.write xls_report
    xls_report.string
  end

  def find_or_save_student_work(is_test)
    student_work = StudentWork.where(homework_common_id: @homework.id, user_id: User.current.id).first
    if student_work.nil?
      @homework.student_works.build(
        name: params[:title],
        description: params[:src],
        user_id: User.current.id,
        is_test: is_test
        )
      unless @homework.save
        logger.debug @homework.errors.full_messages
      else
        student_work = StudentWork.where(homework_common_id: @homework.id, user_id: User.current.id).first
      end
    end
    student_work
  end


  def test_realtime(student_work, src)
    url = "#{Redmine::Configuration['judge_server']}api/realtime_test.json"

    factor = []
    @homework.homework_tests.each do |test|
      factor << {input: test.input, output: test.output}
    end
    solutions = {
        src:src,
        language:@homework.homework_detail_programing.language,
        factor: factor
            }
    uri = URI(url)
    body = solutions.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
    JSON.parse(res.body)
  end

  #成绩计算
  def set_final_score homework,student_work
    if homework && homework.homework_detail_manual
      if homework.homework_type == 1 #匿评作业
        if homework.teacher_priority == 1 #教师优先
          if student_work.teacher_score
            student_work.final_score = student_work.teacher_score
          else
            if student_work.teaching_asistant_score.nil?
              student_work.final_score = student_work.student_score
            elsif student_work.student_score.nil?
              student_work.final_score = student_work.teaching_asistant_score
            else
              ta_proportion = homework.homework_detail_manual.ta_proportion
              final_ta_score = BigDecimal.new("#{student_work.teaching_asistant_score}") * BigDecimal.new("#{ta_proportion}")
              final_s_score = BigDecimal.new("#{student_work.student_score}") * (BigDecimal.new('1.0')  - BigDecimal.new("#{ta_proportion}"))
              final_score = final_ta_score + final_s_score
              student_work.final_score = format("%.2f",final_score.to_f)
            end
          end
        else  #不考虑教师评分
          if student_work.teaching_asistant_score.nil?
            student_work.final_score = student_work.student_score
          elsif student_work.student_score.nil?
            student_work.final_score = student_work.teaching_asistant_score
          else
            ta_proportion = homework.homework_detail_manual.ta_proportion
            final_ta_score = BigDecimal.new("#{student_work.teaching_asistant_score}") * BigDecimal.new("#{ta_proportion}")
            final_s_score = BigDecimal.new("#{student_work.student_score}") * (BigDecimal.new('1.0')  - BigDecimal.new("#{ta_proportion}"))
            final_score = final_ta_score + final_s_score
            student_work.final_score = format("%.2f",final_score.to_f)
          end
        end
      elsif homework.homework_type == 2 && homework.homework_detail_programing #编程作业-----设定：系统评分必定不为空
        if homework.teacher_priority == 1 #教师优先
          if student_work.teacher_score
            student_work.final_score = student_work.teacher_score
          else
            if student_work.teaching_asistant_score.nil? #教辅未评分
              if student_work.student_score.nil?
                student_work.final_score = student_work.system_score
              else
                ta_proportion = homework.homework_detail_programing.ta_proportion + homework.homework_detail_manual.ta_proportion / 2
                final_sy_score = BigDecimal.new("#{student_work.system_score}") * BigDecimal.new("#{ta_proportion}")
                final_st_score = BigDecimal.new("#{student_work.student_score}") * (BigDecimal.new('1.0')  - BigDecimal.new("#{ta_proportion}"))
                final_score = final_sy_score + final_st_score
                student_work.final_score = format("%.2f",final_score.to_f)
              end
            elsif student_work.student_score.nil? #学生未评分
              if student_work.teaching_asistant_score.nil?
                student_work.final_score = student_work.system_score
              else
                ta_proportion = homework.homework_detail_programing.ta_proportion + (1.0 - homework.homework_detail_manual.ta_proportion - homework.homework_detail_programing.ta_proportion) / 2
                final_sy_score = BigDecimal.new("#{student_work.system_score}") * BigDecimal.new("#{ta_proportion}")
                final_ts_score = BigDecimal.new("#{student_work.teaching_asistant_score}") * (BigDecimal.new('1.0')  - BigDecimal.new("#{ta_proportion}"))
                final_score = final_sy_score + final_ts_score
                student_work.final_score = format("%.2f",final_score.to_f)
              end
            else
              final_sy_score = BigDecimal.new("#{student_work.system_score}") * BigDecimal.new("#{homework.homework_detail_programing.ta_proportion}")
              final_ts_score = BigDecimal.new("#{student_work.teaching_asistant_score}") * BigDecimal.new("#{homework.homework_detail_manual.ta_proportion}")
              final_st_score = BigDecimal.new("#{student_work.student_score}") * (BigDecimal.new('1.0')  - BigDecimal.new("#{homework.homework_detail_programing.ta_proportion}") - BigDecimal.new("#{homework.homework_detail_manual.ta_proportion}"))
              final_score = final_sy_score + final_ts_score + final_st_score
              student_work.final_score = format("%.2f",final_score.to_f)
            end
          end
        else  #不考虑教师评分
          if student_work.teaching_asistant_score.nil? #教辅未评分
            if student_work.student_score.nil?
              student_work.final_score = student_work.system_score
            else
              ta_proportion = homework.homework_detail_programing.ta_proportion + homework.homework_detail_manual.ta_proportion / 2
              final_sy_score = BigDecimal.new("#{student_work.system_score}") * BigDecimal.new("#{ta_proportion}")
              final_st_score = BigDecimal.new("#{student_work.student_score}") * (BigDecimal.new('1.0')  - BigDecimal.new("#{ta_proportion}"))
              final_score = final_sy_score + final_st_score
              student_work.final_score = format("%.2f",final_score.to_f)
            end
          elsif student_work.student_score.nil? #学生未评分
            if student_work.teaching_asistant_score.nil?
              student_work.final_score = student_work.system_score
            else
              ta_proportion = homework.homework_detail_programing.ta_proportion + (1.0 - homework.homework_detail_manual.ta_proportion - homework.homework_detail_programing.ta_proportion) / 2
              final_sy_score = BigDecimal.new("#{student_work.system_score}") * BigDecimal.new("#{ta_proportion}")
              final_ts_score = BigDecimal.new("#{student_work.teaching_asistant_score}") * (BigDecimal.new('1.0')  - BigDecimal.new("#{ta_proportion}"))
              final_score = final_sy_score + final_ts_score
              student_work.final_score = format("%.2f",final_score.to_f)
            end
          else
            final_sy_score = BigDecimal.new("#{student_work.system_score}") * BigDecimal.new("#{homework.homework_detail_programing.ta_proportion}")
            final_ts_score = BigDecimal.new("#{student_work.teaching_asistant_score}") * BigDecimal.new("#{homework.homework_detail_manual.ta_proportion}")
            final_st_score = BigDecimal.new("#{student_work.student_score}") * (BigDecimal.new('1.0')  - BigDecimal.new("#{homework.homework_detail_programing.ta_proportion}") - BigDecimal.new("#{homework.homework_detail_manual.ta_proportion}"))
            final_score = final_sy_score + final_ts_score + final_st_score
            student_work.final_score = format("%.2f",final_score.to_f)
          end
        end
      end
    end
  end
end