x = EducodeSales::Common.find_by(extras: EducodeSales::Common::XTYPE)&.id
json.data do
  json.array! @customers do |d|
    if d['department_id']
      business_ids = EducodeSales::Business.where(department_id: d['department_id']).ids
      customer_follows = EducodeSales::CustomerFollow.where(department_id: d['department_id'])
    else
      business_ids = EducodeSales::Business.where(school_id: d.id).ids
      customer_follows = EducodeSales::CustomerFollow.where(school_id: d.id)
    end
    follow_ups = EducodeSales::FollowUp.where(business_id: business_ids)
    
    a_last_follow_time = follow_ups.last&.created_at&.to_s
    b_last_follow_time = customer_follows.last&.created_at&.to_s
    if a_last_follow_time.present? && b_last_follow_time.present?
      json.last_follow_time a_last_follow_time < b_last_follow_time ? b_last_follow_time : a_last_follow_time
    else
      json.last_follow_time a_last_follow_time || b_last_follow_time
    end
    json.id d.id
    json.name d.name
    json.area d.province
    json.property d.school_tags.where(for_missions: true).pluck(:name).join("、")
    if d['department_id']
      json.business EducodeSales::Business.joins(:last_follow_up).where("educode_sales_follow_ups.clazz_id != ?", x).where("educode_sales_businesses.department_id = ?", d['department_id']).size
    else
      json.business EducodeSales::Business.joins(:last_follow_up).where("educode_sales_follow_ups.clazz_id != ?", x).where("educode_sales_businesses.school_id = ?", d.id).size
    end
    json.unit "#{d.name}---#{d['department_name']}"
   
    # json.follow follow_ups.size + customer_follows.size
    json.follow customer_follows.size
    json.staff EducodeSales::CustomerExtension.where(school_id: d.id).map { |d| d.customer_staff&.user&.real_name }.join("、")
    json.department d['department_name'] || ''
    json.major_count d['major_count']
    json.department_id d['department_id'] || ''
    json.teacher_counts UserExtension.where(department_id: d.department_id, identity: 'teacher').size
    json.student_counts UserExtension.where(department_id: d.department_id, identity: 'student').size
  end
end

json.code 0
if params[:page].present?
  json.count @customers.total_count
end