<?php

namespace App\Models\Mysql;

use Hashids\Hashids;
use Illuminate\Database\Eloquent\SoftDeletes;
use Illuminate\Foundation\Bus\DispatchesJobs;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\DB;

class BaseMysql extends Model
{
    // 是否使用分配任务，是否支持软删
//    use DispatchesJobs, SoftDeletes;

    /**
     * 配置中的连接名.
     * @var string
     */
    public $connection = 'mysql';

    /**
     * 自定义主键名
     * @var string
     */
    protected $primaryKey = 'id';

    /**
     * 自动维护时间戳created_at和updated_at
     *
     * @var bool
     */
    public $timestamps = true;

    /**
     * 自增主键
     * @var bool
     */
    public $incrementing = true;

    /**
     * 定义分页尺码
     *
     * @var int
     */
    protected $perPage = 20;

    /**
     * 保护字段.
     * @var string[]
     */
    protected $guarded = ['id'];

    /**
     * 获取表名
     * @return mixed
     */
    public function getTable()
    {
        return $this->table;
    }

    /**
     * 获得数据库服务器版本
     * @return string
     */
    public function getDbServerVersion()
    {
        return DB::getPdo()->getAttribute(\PDO::ATTR_SERVER_VERSION);
    }

    /**
     * 获取表前缀
     * @return string
     */
    public function getTablePrefix()
    {
        return DB::getTablePrefix();
    }

    /**
     * 生成一个ID
     *
     * @param string $idName 查询唯一ID字段名.
     * @param integer $length 长度.
     * @param string $pkValue 主键值.
     *
     * @return string
     */
    public static function generateId(string $idName, $length = 8, $pkValue = '')
    {
        if ($length <= 3) {
            $length = 8;
        }

        if (!empty($pkValue)) {
            $uuid = hashEncodeId($pkValue);
        } else {
            $uuid = rand_letter(1) . (random($length - 1));
            if (self::query()->where($idName, $uuid)->exists()) {
                // 存在则继续生成，直到新的出现.
                return self::generateId($idName, $length, $pkValue);
            }
        }

        return $uuid;
    }
}