<?php
/**
 * 支付方式相关.
 *
 * @author jim <jim458734573@gmail.com>
 * @date   2020-01-22 22:37:21
 */
declare(strict_types=1);

namespace App\Repositories\Service\Payment;

use Hyperf\Guzzle\ClientFactory;

abstract class PaymentInterface
{
    protected static $_self = array();

    protected $_lastError = null;

    /**
     * 根据class，调用指定的实现类.
     * @param string $flag
     * @param string $payType
     */
    public static function factory($flag)
    {
        $className = self::_convertUnderline($flag);

        $className = "App\\Repositories\\Service\\Payment\\{$className}";

        if (class_exists($className)) {
            return $className::getInstance();
        } else {
            return new ErrorPayment();
        }
    }

    /**
     * 获取最后一次错误信息
     * @return
     */
    public function getLastError()
    {
        return $this->_lastError;
    }

    /**
     * @param array $data
     * @return string 成功时 返回支付链接、失败时返回空字符串 并给 lastError 赋值
     */
    abstract public function createPayLink($data = array());

    /**
     * @param string $orderSn 我方订单号
     * @param string $tradeNo 支付方单号
     * @param float $money 支付金额
     * @param string $partnerId 商户号
     * @return bool
     */
    abstract public function notify(&$orderSn, &$tradeNo, &$money);

    /**
     * 发起http get 请求
     * @param $url
     * @return string
     */
    protected function httpGet($url)
    {
        $options = array(
            'timeout' => 20,    // 超时，单位秒.
            'verify' => false,  // 是否校验SSL证书.
            'http_errors' => false, // 如果跟随http异常头部是否中断.
            'debug' => false,    // 是否启用调试模式.
            'allow_redirects' => true, // 不跟随301／302跳转.
        );
        $client = make(ClientFactory::class)->create($options);
        try {
            $result = $client->get($url);
            $code = $result->getStatusCode();
            if ($code == 200) {
                return $result->getBody()->getContents();
            }
        } catch (\Exception $e) {
        }
        return '';
    }

    /**
     * 发起 http post 请求
     * @param $url
     * @param $data
     * @return string
     */
    protected function httpPost($url, $data)
    {
        $options = array(
            'timeout' => 20,    // 超时，单位秒.
            'verify' => false,  // 是否校验SSL证书.
            'http_errors' => false, // 如果跟随http异常头部是否中断.
            'debug' => false,    // 是否启用调试模式.
            'allow_redirects' => true, // 不跟随301／302跳转.
        );
        $client = make(ClientFactory::class)->create($options);
        try {
            $params = [
                'form_params'=>$data,
            ];
            $result = $client->post($url, $params);
            $code = $result->getStatusCode();
            if ($code == 200) {
                return $result->getBody()->getContents();
            } else {
                logger('PaymentInterface-httpPost-code-error', ['code' => $code]);
                return $code;
            }
        } catch (\Exception $e) {
            logger('PaymentInterface-httpPost-error', ['msg' => $e->getMessage()]);
            return  $e->getMessage();
        }
        return '';
    }

    /**
     * 发起 http post 请求
     * @param $url
     * @param $data
     * @return string
     */
    public function httpPostJson($url, $data)
    {
        $options = array(
            'timeout' => 20,    // 超时，单位秒.
            'verify' => false,  // 是否校验SSL证书.
            'http_errors' => false, // 如果跟随http异常头部是否中断.
            'debug' => false,    // 是否启用调试模式.
            'allow_redirects' => true, // 不跟随301／302跳转.
        );
        $client = make(ClientFactory::class)->create($options);
        try {
            $params = [
                'headers' => [
                    'Content-Type'=>'application/json',
                ],
                'json'=>$data,
            ];
            $result = $client->post($url, $params);
            $code = $result->getStatusCode();
            if ($code == 200) {
                return $result->getBody()->getContents();
            }
        } catch (\Exception $e) {
        }
        return '';
    }

    private static function _convertUnderline($str)
    {

        $string = '';

        $arr = explode('_', $str);

        foreach ($arr as $value) {
            $string .= ucfirst(strtolower($value));
        }

        return $string . 'Payment';
    }

    /**
     * 签名算法
     *
     * @param $data
     * @return string
     */
    public function getSign($data)
    {
        ksort($data);
        $md5str = "";
        foreach ($data as $key => $val) {
            $md5str = $md5str . $key . "=" . $val . "&";
        }

        return $md5str;
    }

    /**
     * 构建rsa私钥
     *
     * @param $privateKey
     * @return false|OpenSSLAsymmetricKey
     */
    public function setupPrvKeySign($privateKey)
    {
        $pem = chunk_split($privateKey, 64, "\n");
        $pem = "-----BEGIN RSA PRIVATE KEY-----\n" . $pem . "-----END RSA PRIVATE KEY-----\n";
        $key = openssl_pkey_get_private($pem);
        return $key;
    }

    /**
     * 构建rsa共钥
     *
     * @param $publicKey
     * @return false|OpenSSLAsymmetricKey
     */
    public function setupPubKey($publicKey)
    {
        $pem = chunk_split($publicKey, 64, "\n");
        $pem = "-----BEGIN PUBLIC KEY-----\n" . $pem . "-----END PUBLIC KEY-----";
        $key = openssl_pkey_get_public($pem);
        return $key;
    }
}