<?php


namespace App\Services;


use App\Traits\CommonTrait;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\DB;

class OpensslService
{
    use CommonTrait;

    public $table = 'sys_openssl_secret';

    /**
     * 重新缓存数据
     */
    public function cacheCsr()
    {
        $query = DB::table($this->table);
        $query->select('id')->orderBy('id', 'asc')->chunk(100, function ($listObj) {
            foreach ($listObj as $row) {
                $keyArr = $this->getOpensslCacheKey($row->id);
                Cache::tags($keyArr['tags'])->forever($keyArr['key'], get_object_vars($row));
            }
        });
    }

    /**
     * 创建新的密钥对
     *
     * @return array
     */
    public function getNewCsr()
    {
        $config = array(
            "private_key_bits" => 1024, //指定应该使用多少位来生成私钥  512 1024  2048  4096等
            "private_key_type" => OPENSSL_KEYTYPE_RSA, //选择在创建CSR时应该使用哪些扩展。可选值有 OPENSSL_KEYTYPE_DSA, OPENSSL_KEYTYPE_DH, OPENSSL_KEYTYPE_RSA 或 OPENSSL_KEYTYPE_EC. 默认值是 OPENSSL_KEYTYPE_RSA.
        );
        $res = openssl_pkey_new($config);
        openssl_pkey_export($res, $private_key_pem, null, $config);

        $details = openssl_pkey_get_details($res);
        $public_key_pem = $details['key'];

        return ['private_key' => $private_key_pem, 'public_key' => $public_key_pem];
    }

    /**
     * 清空表，清空缓存
     */
    public function clearTable()
    {
        DB::table($this->table)->truncate();

        $keyArr = $this->getOpensslTotalCacheKey();
        Cache::tags($keyArr['tags'])->flush();
    }
}