<?php
// +----------------------------------------------------------------------
// | 萤火商城系统 [ 致力于通过产品和服务，帮助商家高效化开拓市场 ]
// +----------------------------------------------------------------------
// | Copyright (c) 2017~2024 https://www.yiovo.com All rights reserved.
// +----------------------------------------------------------------------
// | Licensed 这不是一个自由软件，不允许对程序代码以任何形式任何目的的再发行
// +----------------------------------------------------------------------
// | Author: 萤火科技 <admin@yiovo.com>
// +----------------------------------------------------------------------
declare (strict_types=1);

namespace app\common\library\paypal;

use Alipay\EasySDK\Kernel\Config;
use Alipay\EasySDK\Kernel\Factory;
use Alipay\EasySDK\Kernel\Util\ResponseChecker;
use app\common\enum\Client as ClientEnum;
use app\common\library\Log;
use app\common\library\payment\gateway\Driver;
use cores\exception\BaseException;
use cores\Request;
use PayPal\Api\Amount;
use PayPal\Api\Order;
use PayPal\Api\Payer;
use PayPal\Api\Payment;
use PayPal\Api\PaymentExecution;
use PayPal\Api\RedirectUrls;
use PayPal\Api\Transaction;
use PayPal\Api\VerifyWebhookSignature;
use PayPal\Auth\OAuthTokenCredential;
use PayPal\Exception\PayPalConnectionException;
use PayPal\Rest\ApiContext;
use think\Exception;
use think\exception\HttpException;

/**
 * paypal驱动
 * Class PayPal
 * @package app\common\library\payment\gateway\driver
 */
class PayPal
{
    // 统一下单API的返回结果
    private $result;

    // 异步通知的请求参数 (由第三方支付发送)
    private $notifyParams;

    protected $config;

    protected $notifyWebHookId;//	3NP026061E6858914
    // 异步通知的验证结果
    private $notifyResult;

    public $apiContext;

    public function __construct($config)
    {
        // 秘钥配置
        $this->config = $config;

        $this->notifyWebHookId = $this->config['web_hook_id'];

        $this->apiContext = new ApiContext(
            new OAuthTokenCredential(
                $this->config['client_id'],
                $this->config['secret']
            )
        );

        $this->apiContext->setConfig([
            'mode' => $this->config['mode'],//sandbox, live
            'log.LogEnabled' => true,
            'log.FileName' => app()->getRootPath() . 'runtime/log/PayPal.log', // 记录日志
            'log.LogLevel' => 'debug', // 在live上用info
            'cache.enable' => true,
        ]);
    }

    /**
     * 统一下单API
     * @param string $outTradeNo 交易订单号
     * @param string $totalFee 实际付款金额
     * @param array $extra 附加的数据 (需要携带H5端支付成功后跳转的url)
     * @return bool|array
     * @throws BaseException
     */
    public function unify(string $outTradeNo, string $totalFee, array $extra = [], $currency = 'USD')
    {
        $apiContext = new ApiContext(
            new OAuthTokenCredential(
                $this->config['client_id'],     // ClientID
                $this->config['secret']      // ClientSecret
            )
        );

        // After Step 2
        $payer = new Payer();
        $payer->setPaymentMethod('paypal');

        $amount = new Amount();
        $amount->setTotal($totalFee);
        $amount->setCurrency($currency);

        $transaction = new Transaction();
        $transaction->setAmount($amount);

        $redirectUrls = new RedirectUrls();
        //live
        //$return_url = config('app.app_host') . $this->config['return_url'] . $outTradeNo;
        //$cancel_Url = config('app.app_host').$this->config['cancel_url'];
        //sandbox
        $return_url = 'https://lar.lmm.gold/api/index/index';
        $cancel_url = 'https://lar.lmm.gold/store/index.html';

        $redirectUrls->setReturnUrl($return_url)
            ->setCancelUrl($cancel_url);

        $payment = new Payment();
        $payment->setIntent('sale')
            ->setPayer($payer)
            ->setTransactions(array($transaction))
            ->setRedirectUrls($redirectUrls);

        $this->result = $payment->create($apiContext);// This will print the detailed information on the exception.
        //REALLY HELPFUL FOR DEBUGGING
        //echo "\n\nRedirect user to approval_url: " . $payment->getApprovalLink() . "\n";
        return ['approval_link' => $payment->getApprovalLink()];
    }

    /**
     * 交易查询 (主动查询订单支付状态)
     * @param string $outTradeNo 交易订单号
     * @return array|null
     * @throws BaseException
     */
    public function tradeQuery(string $outTradeNo): ?array
    {
        try {

            $payment = Payment::get($outTradeNo, $this->apiContext);
            // 记录日志
            Log::append('Paypal-tradeQuery', ['outTradeNo' => $outTradeNo, 'result' => json_encode($result)]);
            // 处理响应或异常
            //$this->throwError($result->msg . "，" . $result->subMsg);
            // 返回查询成功的结果
            return $result->toArray();
        } catch (\Throwable $e) {
            $this->throwError('支付宝API交易查询失败：' . $e->getMessage(), true, 'tradeQuery');
        }
        return null;
    }

    public function executePayment($paymentId)
    {
        try {
            $payment = Payment::get($paymentId, $this->apiContext);
            $execution = new PaymentExecution();
            $execution->setPayerId($payment->getPayer()->getPayerInfo()->getPayerId());

            // 执行付款
            $payment->execute($execution, $this->apiContext);
            $payment::get($payment->getId(), $this->apiContext);
            $transactions = $payment->getTransactions();
            \think\facade\Log::error('$transactions::' . json_encode($transactions));
            if ($payment->getState() == 'approved' && $payment->getId() == $paymentId) {
                //related_resources->sale->id
                return true;
            }
            return false;

        } catch (\Exception $e) {
            \think\facade\Log::error('executePayment', ['paymentId' => $paymentId, 'errMsg' => $e->getMessage()]);
            $this->throwError('执行失败：' . $e->getMessage(), true, 'tradeQuery');
            return false;
        }
    }

    /**
     * 支付成功后的异步通知
     * @return bool
     */
    public function notify(Request $request, $webHookId): bool
    {

        // 接收表单数据
        try {
            $headers = $request->header();
            $headers = array_change_key_case($headers, CASE_UPPER);

            $content = $request->getContent();
            \think\facade\Log::error('notify::' . json_encode($headers));

            // 如果是laravel，这里获请求头的方法可能要变，现在是$headers['PAYPAL-AUTH-ALGO']，去到laravel的话可能要$headers['PAYPAL-AUTH-ALGO'][0]，到时试试就知道了，实在不行打日志看看数据结构再确定如何获取
            $signatureVerification = new VerifyWebhookSignature();
            $signatureVerification->setAuthAlgo($headers['PAYPAL-AUTH-ALGO']);
            $signatureVerification->setTransmissionId($headers['PAYPAL-TRANSMISSION-ID']);
            $signatureVerification->setCertUrl($headers['PAYPAL-CERT-URL']);
            $signatureVerification->setWebhookId($webHookId ?: $this->notifyWebHookId);
            $signatureVerification->setTransmissionSig($headers['PAYPAL-TRANSMISSION-SIG']);
            $signatureVerification->setTransmissionTime($headers['PAYPAL-TRANSMISSION-TIME']);
            $signatureVerification->setRequestBody($content);

            $result = clone $signatureVerification;

            $output = $signatureVerification->post($this->apiContext);
            \think\facade\Log::error('notify' . json_encode($output));
            if ($output->getVerificationStatus() == 'SUCCESS') {
                return true;
            }

            throw new HttpException(400, 'Verify Failed.');

        } catch (HttpException $exception) {
            \think\facade\Log::error('PayPal Notification Verify Failed' . $exception->getMessage());
            return false;
        }
    }

    /**
     * PAYPAL退款API
     * @param string $outTradeNo 第三方交易单号
     * @param string $refundAmount 退款金额
     * @param array $extra 附加的数据
     * @return bool
     * @throws BaseException
     */
    public function refund(string $outTradeNo, string $refundAmount, array $extra = []): bool
    {
        try {
            // 发起API调用
            $outRequestNo = (string)time();

            return true;
        } catch (\Throwable $e) {
            $this->throwError('支付宝API退款请求：' . $e->getMessage(), true, 'refund');
        }
        return false;
    }

    /**
     * 单笔转账接口
     * @param string $outTradeNo 交易订单号
     * @param string $totalFee 实际付款金额
     * @param array $extra 附加的数据 (ALIPAY_LOGON_ID支付宝登录号，支持邮箱和手机号格式; name参与方真实姓名)
     * @return bool
     */
    public function transfers(string $outTradeNo, string $totalFee, array $extra = []): bool
    {
        return false;
    }

    /**
     * 获取异步回调的请求参数
     * @return array
     */
    public function getNotifyParams(): array
    {
        return [
            // 第三方交易流水号
            'buyerId' => $this->notifyParams['PayerID'],
            'paymentId' => $this->notifyParams['paymentId']
        ];
    }

    /**
     * 返回异步通知结果的输出内容
     * @return string
     */
    public function getNotifyResponse(): string
    {
        return $this->notifyResult ? 'success' : 'FAIL';
    }

    public function getUnifyResult(): array
    {
        if (empty($this->result->getApprovalLink())) {
            $this->throwError('paypal当前没有unify结果', true, 'getUnifyResult');
            return [];
        }
        // 整理返回的数据
        return ['approval_link' => $this->result->getApprovalLink(), 'id' => $this->result->getId()];
    }

    /**
     * 设置支付宝配置信息（全局只需设置一次）
     * @param array $options 支付宝配置信息
     * @param string $client 下单客户端
     * @return null
     */
    public function setOptions(array $options, string $client)
    {
        return $this;
    }

    /**
     * 输出错误信息
     * @param string $errMessage 错误信息
     * @param bool $isLog 是否记录日志
     * @param string $action 当前的操作
     * @throws BaseException
     */
    private function throwError(string $errMessage, bool $isLog = false, string $action = '')
    {
        $this->error = $errMessage;
        $isLog && Log::append("Alipay-{$action}", ['errMessage' => $errMessage]);
        throwError($errMessage);
    }

    /**
     * 获取和验证下单接口所需的附加数据
     * @param array $extra
     * @return array
     * @throws BaseException
     */
    private function extraAsUnify(array $extra): array
    {
        if (!array_key_exists('returnUrl', $extra)) {
            $this->throwError('returnUrl参数不存在');
        }
        return $extra;
    }


    /**
     * 异步回调地址
     * @return string
     */
    private function notifyUrl(): string
    {
        // 例如：https://www.xxxx.com/alipayNotice.php
        return base_url() . 'alipayNotice.php';
    }
}