# authorization_time： 自动授权时间
# auto_users_trial: 自动授权
class School < ActiveRecord::Base
  attr_accessible :name, :province, :pinyin, :city, :address, :logo_link,
                  :auto_users_trial, :shool_code, :authorization_time,
                  :identifier, :is_online, :video_desc, :video_name,:course_link,
                  :course_name, :partner_id, :customer_id
  has_many :courses
  has_many :departments, :dependent => :destroy
  has_many :shixun_schools, :dependent => :destroy
  has_many :shixuns, :through => :shixun_schools
  # 工程认证
  has_many :users, :through => :ec_school_users
  has_many :ec_school_users, :dependent => :destroy

  has_many :ec_majors, :through => :ec_major_schools
  has_many :ec_major_schools, :dependent => :destroy

  has_many :partners, :dependent => :destroy
  has_many :customers, :dependent => :destroy

  # banner图片信息
  has_many :school_images, :dependent => :destroy

  # 视频附件
  acts_as_attachable

  scope :authorization, lambda{where(auto_users_trial: 1)}

  def to_s
  	self.name.to_s
  end

  def teacher_count
    User.find_by_sql("SELECT COUNT(users.`id`) AS teacher_count FROM users LEFT JOIN user_extensions ON
                      users.id=user_extensions.user_id WHERE user_extensions.`school_id` = #{self.id} AND
                      user_extensions.`identity` = 0").first.try(:teacher_count)
  end

  def student_count
    User.find_by_sql("SELECT COUNT(users.`id`) AS student_count FROM users LEFT JOIN user_extensions ON
                      users.id=user_extensions.user_id WHERE user_extensions.`school_id` = #{self.id} AND
                      user_extensions.`identity` = 1").first.try(:student_count)
  end

  def course_count
    Course.find_by_sql("SELECT COUNT(courses.`id`) AS course_count FROM courses LEFT JOIN user_extensions ON
                        courses.tea_id=user_extensions.user_id WHERE user_extensions.`school_id` = #{self.id} AND
                        courses.id != 1309").first.try(:course_count)
  end

  def shixun_count
    Shixun.find_by_sql("select count(s.id) as shixun_count from users u right join shixuns s on u.id=s.user_id and
                        s.status in (2, 3) inner join user_extensions ue on u.id=ue.user_id and
                        ue.school_id=#{self.id}").first.try(:shixun_count)
  end

  def shixun_report_count
    StudentWork.find_by_sql("SELECT count(*) as sw_count FROM `student_works` where user_id in
                             (SELECT users.id FROM users RIGHT JOIN user_extensions ON users.id=user_extensions.user_id
                             WHERE user_extensions.`school_id`=#{self.id}) and work_status between 1 and 2 and
                             myshixun_id !=0").first.try(:sw_count)
  end

  def statistic_url
    dep = departments.where("identifier is not null").first
    url = dep.present? ? "/colleges/#{dep.identifier}/statistics" : ""
  end

  def course_act_time
    CourseActivity.find_by_sql("SELECT max(ca.updated_at) as max_update FROM course_activities ca left join courses on ca.course_id =
                                courses.id LEFT JOIN user_extensions ON courses.tea_id=user_extensions.user_id WHERE
                                user_extensions.`school_id` = #{self.id}").first.try(:max_update)
  end
end