# encoding: utf-8
module ApiHelper
  #获取用户的工作单位
  def get_user_work_unit user
    work_unit = ""
    if user.user_extensions.identity == 0 || user.user_extensions.identity == 1
      work_unit = user.user_extensions.school.name unless  user.user_extensions.school.nil?
    elsif  user.user_extensions.identity == 3
      work_unit = user.user_extensions.occupation
    elsif user.user_extensions.identity == 2
      work_unit = user.firstname
    end
    work_unit
  end

  #获取用户地区
  def get_user_location user
    location = ""
    location << (user.user_extensions.location || '')
    location << (user.user_extensions.location_city || '')
    location
  end


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


  def stars_to_json_like starts,show_jour,homework,show_name
    result = []
    starts.each do |s|
      comment = get_homework_review homework,show_jour,s.rater
      rater_name = show_name ? s.rater.login : l(:label_anonymous)
      rater_id = show_name ? s.rater.id : ''
      result << {:rater_id =>rater_id ,:rater_name => rater_name,:created_at => format_time(s.created_at),:stars => s.stars,:comment => comment}
    end
    result
  end

  #########################################################
  #sw
  #获取课程未匿评数量
  #param: user => "用户", course_id => "查询的课程ID"
  #return: 作业的数量
  #########################################################
  def get_course_anonymous_evaluation user,course
    count = 0
    if course
      is_teacher = is_course_teacher user,course
      if is_teacher #如果是老师，显示学生提交的作业数
        course.homeworks.each do |bid|
          count += bid.homeworks.count
        end
      else #如果是学生，显示未匿评的数量
        course.homeworks.each do |bid|
          count += get_student_not_batch_homework_list bid,user
        end
      end
    end
    [count,is_teacher]
  end

  def get_user_language user
    (user.language.nil? || user.language == "") ? 'zh':user.language
  end

  # 获取课程作业的状态
  def get_homework_status homework
    homework_status = ""
       if !homework.nil?
         if  homework.homework_type == 1 && homework.homework_detail_manual
           case homework.homework_detail_manual.comment_status
             when 1
               homework_status = show_homework_deadline homework
             when 2
               homework_status = "正在匿评中"
             when 3
               homework_status = "匿评已结束"
           end
         elsif homework.homework_type == 0
           homework_status = "未启用匿评"
         elsif homework.homework_type == 2
           homework_status = "编程作业"
         else
         end
       end
    homework_status
  end

  #获取作业的是否可以匿评的描述
  def homework_status_desc homework
    if homework.homework_type == 1 && homework.homework_detail_manual #匿评作业
      if Time.parse(homework.end_time.to_s).strftime("%Y-%m-%d") >= Time.now.strftime("%Y-%m-%d")
        link = "<span class='fr mr10 pr_join_span ' title='作业截止日期之前不可以启动匿评'>启动匿评</span>".html_safe
      elsif homework.student_works.count >= 2 #作业份数大于2
        case homework.homework_detail_manual.comment_status
          when 1
            link =  '启动匿评'
          when 2
            link =  '关闭匿评'
          when 3
            link = " 匿评结束"
        end
      else
        link = "学生提交作业数大于2时才可以启动匿评"
      end
    else
      link = "未开启匿评作业不可以启动匿评"
    end
    link
  end

  #获取
  def get_submit_sutdent_list homework
    studentlist = []
    if homework.is_a?(Hash) && homework.key?(:studentlist)
      studentlist = homework[:studentlist]
    else
      homework.student_works.order("created_at desc").page(1).per(6).each do |work|
            studentlist << work.user
      end
    end
    studentlist
  end

  #计算作业的截止日期，剩余日期
  def show_homework_deadline homework
   day = 0
    if (day = (Date.parse(homework.end_time.to_s) - Date.parse(Time.now.to_s)).to_i) > 0
      "距作业截止还有" << (Date.parse(Time.now.to_s) - Date.parse(homework.end_time.to_s)).to_i.to_s << "天"
    else
      "已截止，但可补交"
    end
  end
end