module SubjectsHelper

  # 实训路径的发布状态
  def publish_status subject, is_manager
    status = -1
    if is_manager
      status = 0 if subject.status == 0
      status = 1 if subject.status == 1
      status = 2 if subject.status == 2
    end
    status
  end

  # 实训路径的公开状态
  def public_status subject, is_manager, user
    status = -1
    if is_manager
      status = 0 if subject.public == 0
      status = 1 if subject.public == 1
      status = 2 if subject.public == 2 && user.admin?
    end
    status
  end

  # 实训路径的所有用户获得的标签
  def user_shixun_tags challenge_ids, user_id
    ChallengeTag.joins("join games on challenge_tags.challenge_id = games.challenge_id").
      where(challenge_id: challenge_ids, games: {status: 2, user_id: user_id}).pluck("challenge_tags.name").uniq
  end

  # 金课的课堂状态 0：未开课，1：进行中，2：已结束
  def subject_course_status course
    if course.is_end
      {status: 2, time: ""}
    elsif course.start_date && course.start_date > Date.today
      {status: 0, time: ""}
    elsif course.start_date && course.start_date <= Date.today && course.end_date >= Date.today
      sum_week = (((course.end_date - course.start_date).to_i + 1) / 7.0).ceil
      curr_week = (((Date.today - course.start_date).to_i + 1) / 7.0).ceil
      {status: 1, time: "进行至第#{curr_week}周，共#{sum_week}周"}
    else
      {status: -1, time: ""}
    end
  end
end