<?php

namespace app\admin\service;

use app\common\model\Customers as CustomersModel;
use app\common\model\CustomerEmployees;

class CustomersService
{
    public function selectCustomersWithEmployees()
    {   
        //with 预载入 ,解决N+1问题
        $list = CustomersModel::with('employees')->select();
        return $list;
    }

    public function addCustomer($companyName)
    {
        $id = CustomersModel::create([
            'company_name' => $companyName
        ]);
        return $id;
    }

    public function addEmployee($empName, $Id)
    {
        $id = CustomersModel::where('id', $Id)->find()->employees()->save([
            'employee_name'    => $empName
        ]);
        return $id;
    }


    public function deleteEmployee($empId)
    {
        $result = CustomerEmployees::destroy($empId);
        return $result;  // 返回受影响的行数，删除一行就1,没有删除就是0
    }

    public function deleteCustomer($customerId)
    {
        // 删除客户单位会自动删除关联的员工（假设你在模型中设置了级联删除）
        $result = CustomersModel::destroy($customerId);
        return $result;  // 返回受影响的行数，删除一行就1,没有删除就是0
    }


}