class UpdateAllRake < ActiveRecord::Migration
  def up
    attachments = Attachment.where("is_publish = 0 and publish_time <= '#{Date.today}'")
    attachments.update_all(:is_publish => 1)

    exercises = Exercise.where("publish_time is not null and exercise_status = 1 and publish_time <=?",Time.now)
    exercises.update_all(:exercise_status => 2)

    end_exercises = Exercise.where("end_time <=? and exercise_status = 2",Time.now)
    end_exercises.each do |exercise|
      course = exercise.course
      exercise.update_column('exercise_status', 3)
      course.student.each do |student|
        if ExerciseUser.where("user_id = ? && exercise_id = ?",student.student_id,exercise.id).empty?
          ExerciseUser.create(:user_id => student.student_id, :exercise_id => exercise.id, :start_at => exercise.end_time, :status => true,:score=>0)
        end
      end
    end
  end

  def down
  end
end