<?php

namespace addons\shopro\library\ccblife;

use think\Exception;

/**
 * 建行支付服务类
 *
 * 功能:
 * - 生成建行支付串
 * - 处理支付回调
 * - 验证支付结果
 *
 * @author Billy
 * @date 2025-01-16
 */
class CcbPaymentService
{
    /**
     * 配置信息
     * @var array
     */
    private $config;

    /**
     * 加密实例
     * @var CcbEncryption
     */
    private $encryption;

    /**
     * 构造函数
     *
     * @param array $config 配置数组
     */
    public function __construct($config = [])
    {
        if (empty($config)) {
            $config = config('ccblife');
        }

        $this->config = $config;
        $this->encryption = new CcbEncryption($config);
    }

    /**
     * 生成支付串
     *
     * @param array $order 订单数据
     * @return array 返回结果 ['success' => bool, 'payment_string' => string, 'pay_flow_id' => string]
     */
    public function generatePaymentString($order)
    {
        try {
            // 1. 生成支付流水号
            $payFlowId = $this->encryption->generatePayFlowId();

            // 2. 构造支付参数
            $params = $this->buildPaymentParams($order, $payFlowId);

            // 3. 生成支付串签名
            $mac = $this->encryption->generatePaymentSign($params);

            // 4. 加密商户公钥
            $encPub = $this->encryption->encryptMerchantPublicKey();

            // 5. 添加签名和加密字段
            $params['MAC'] = $mac;
            $params['PLATFORMID'] = $this->config['service_id'];
            $params['ENCPUB'] = $encPub;

            // 6. 生成支付串
            $paymentString = http_build_query($params);

            return [
                'success' => true,
                'payment_string' => $paymentString,
                'pay_flow_id' => $payFlowId,
            ];

        } catch (Exception $e) {
            return [
                'success' => false,
                'error' => $e->getMessage(),
            ];
        }
    }

    /**
     * 处理支付回调
     *
     * @param array $callbackData 回调数据
     * @return array 返回结果
     */
    public function handleCallback($callbackData)
    {
        // 支付回调处理逻辑
        // 建行支付成功后会通过notify_url回调

        return [
            'success' => true,
            'trans_id' => $callbackData['trans_id'] ?? '',
            'order_id' => $callbackData['order_id'] ?? '',
        ];
    }

    /**
     * 验证支付结果
     *
     * @param string $orderId 订单ID
     * @return bool 是否支付成功
     */
    public function verifyPayment($orderId)
    {
        // 通过订单查询接口验证支付结果
        $orderService = new CcbOrderService($this->config);
        $result = $orderService->queryOrder($orderId);

        if ($result['success']) {
            $orderStatus = $result['data']['CLD_BODY']['ORDER_STATUS'] ?? '0';
            return $orderStatus === '1'; // 1-已支付
        }

        return false;
    }

    /**
     * 构造支付参数
     *
     * @param array $order 订单数据
     * @param string $payFlowId 支付流水号
     * @return array 支付参数
     */
    private function buildPaymentParams($order, $payFlowId)
    {
        // 获取支付配置
        $paymentConfig = $this->config['payment'] ?? [];

        // 计算超时时间
        $timeoutMinutes = $paymentConfig['timeout_minutes'] ?? 30;
        $timeout = date('YmdHis', time() + $timeoutMinutes * 60);

        return [
            'MERCHANTID' => $this->config['merchant_id'],
            'POSID' => $this->config['pos_id'],
            'BRANCHID' => $this->config['branch_id'],
            'ORDERID' => $payFlowId, // 支付流水号
            'USER_ORDERID' => $order['order_sn'], // 商城订单号
            'PAYMENT' => number_format($order['pay_amount'], 2, '.', ''),
            'CURCODE' => $paymentConfig['currency_code'] ?? '01',
            'TXCODE' => $paymentConfig['tx_code'] ?? '520100',
            'REMARK1' => '',
            'REMARK2' => $this->config['service_id'], // 重要: 必须填写服务方编号
            'TYPE' => '1',
            'GATEWAY' => '0',
            'CLIENTIP' => $this->getClientIp(),
            'THIRDAPPINFO' => $paymentConfig['third_app_info'] ?? 'comccbpay1234567890cloudmerchant',
            'TIMEOUT' => $timeout,
        ];
    }

    /**
     * 获取客户端IP
     *
     * @return string IP地址
     */
    private function getClientIp()
    {
        if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
            $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
        } elseif (isset($_SERVER['HTTP_CLIENT_IP'])) {
            $ip = $_SERVER['HTTP_CLIENT_IP'];
        } elseif (isset($_SERVER['REMOTE_ADDR'])) {
            $ip = $_SERVER['REMOTE_ADDR'];
        } else {
            $ip = '127.0.0.1';
        }

        // 如果是多个IP,取第一个
        if (strpos($ip, ',') !== false) {
            $ips = explode(',', $ip);
            $ip = trim($ips[0]);
        }

        return $ip;
    }
}