<?php

namespace addons\QiDingDong\common\helper;

use addons\QiDingDong\common\service\SettingService;

class RsaHelper
{
    protected static $public_key = '';      //公钥

    /**
     * 根据公钥路径获取公钥信息
     *
     * @param string $path
     */
    public static function publicKey(string $path = '')
    {
        self::$public_key = openssl_pkey_get_public(file_get_contents($path));
    }

    /**
     * 公钥加密
     *
     * @param string|array $data
     * @return boolean|string
     */
    public static function publicEncrypt($data)
    {
        if (empty($data)) {
            return $data;
        }
        if (empty(self::$public_key)) {
            return false;
        }
        $encryptData = '';
        if (openssl_public_encrypt($data, $encryptData, self::$public_key)) {
            return base64_encode($encryptData);
        } else {
            return false;
        }
    }

    /**
     * 公钥解密
     *
     * @param string $data
     * @return boolean|string
     */
    public static function publicDecrypt(string $data)
    {
        if (empty($data)) {
            return $data;
        }
        if (empty(self::$public_key)) {
            return false;
        }
        $data = base64_decode($data);
        $decryptData = '';
        if (openssl_public_decrypt($data, $decryptData, self::$public_key)) {
            return $decryptData;
        } else {
            return false;
        }
    }

    public static function setPublicKey(int $mall_id)
    {
        $mall_id = SettingService::getMasterMall();
        $public_key = dirname(\Yii::$app->basePath) .'/'. ((new SettingService())->get($mall_id)['public_key'] ?? '');

        if (empty($public_key)) throw new \Exception("请上传Public Key");

        RsaHelper::publicKey($public_key);
    }
}