初始化项目：添加后端代码、ThinkPHP框架、前端资源
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<?php
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namespace Yansongda\Pay\Gateways\Wechat;
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use Exception;
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use Yansongda\Pay\Events;
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use Yansongda\Pay\Exceptions\BusinessException;
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use Yansongda\Pay\Exceptions\GatewayException;
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use Yansongda\Pay\Exceptions\InvalidArgumentException;
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use Yansongda\Pay\Exceptions\InvalidSignException;
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use Yansongda\Pay\Gateways\Wechat;
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use Yansongda\Pay\Log;
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use Yansongda\Supports\Collection;
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use Yansongda\Supports\Config;
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use Yansongda\Supports\Str;
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use Yansongda\Supports\Traits\HasHttpRequest;
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/**
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* @author yansongda <me@yansongda.cn>
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*
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* @property string appid
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* @property string app_id
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* @property string miniapp_id
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* @property string sub_appid
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* @property string sub_app_id
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* @property string sub_miniapp_id
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* @property string mch_id
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* @property string sub_mch_id
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* @property string key
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* @property string return_url
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* @property string cert_client
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* @property string cert_key
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* @property array log
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* @property array http
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* @property string mode
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*/
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class Support
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{
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use HasHttpRequest;
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/**
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* Wechat gateway.
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*
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* @var string
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*/
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protected $baseUri;
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/**
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* Config.
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*
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* @var Config
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*/
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protected $config;
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/**
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* Instance.
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*
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* @var Support
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*/
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private static $instance;
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/**
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* Bootstrap.
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*
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* @author yansongda <me@yansongda.cn>
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*/
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private function __construct(Config $config)
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{
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$this->baseUri = Wechat::URL[$config->get('mode', Wechat::MODE_NORMAL)];
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$this->config = $config;
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$this->setHttpOptions();
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}
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/**
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* __get.
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*
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* @author yansongda <me@yansongda.cn>
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*
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* @param $key
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*
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* @return mixed|Config|null
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*/
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public function __get($key)
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{
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return $this->getConfig($key);
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}
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/**
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* create.
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*
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* @author yansongda <me@yansongda.cn>
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*
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* @throws GatewayException
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* @throws InvalidArgumentException
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* @throws InvalidSignException
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*
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* @return Support
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*/
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public static function create(Config $config)
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{
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if ('cli' === php_sapi_name() || !(self::$instance instanceof self)) {
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self::$instance = new self($config);
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self::setDevKey();
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}
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return self::$instance;
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}
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/**
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* getInstance.
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*
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* @author yansongda <me@yansongda.cn>
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*
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* @throws InvalidArgumentException
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*
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* @return Support
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*/
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public static function getInstance()
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{
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if (is_null(self::$instance)) {
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throw new InvalidArgumentException('You Should [Create] First Before Using');
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}
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return self::$instance;
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}
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/**
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* clear.
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*
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* @author yansongda <me@yansongda.cn>
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*/
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public static function clear()
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{
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self::$instance = null;
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}
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/**
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* Request wechat api.
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*
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* @author yansongda <me@yansongda.cn>
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*
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* @param string $endpoint
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* @param array $data
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* @param bool $cert
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*
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* @throws GatewayException
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* @throws InvalidArgumentException
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* @throws InvalidSignException
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*/
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public static function requestApi($endpoint, $data, $cert = false): Collection
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{
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Events::dispatch(new Events\ApiRequesting('Wechat', '', self::$instance->getBaseUri().$endpoint, $data));
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$result = self::$instance->post(
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$endpoint,
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self::toXml($data),
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$cert ? [
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'cert' => self::$instance->cert_client,
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'ssl_key' => self::$instance->cert_key,
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] : [
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'headers' => [
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'Content-Type'=>'application/xml',
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],
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]
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);
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$result = is_array($result) ? $result : self::fromXml($result);
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Events::dispatch(new Events\ApiRequested('Wechat', '', self::$instance->getBaseUri().$endpoint, $result));
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return self::processingApiResult($endpoint, $result);
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}
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/**
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* Filter payload.
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*
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* @author yansongda <me@yansongda.cn>
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*
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* @param array $payload
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* @param array|string $params
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* @param bool $preserve_notify_url
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*
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* @throws InvalidArgumentException
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*/
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public static function filterPayload($payload, $params, $preserve_notify_url = false): array
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{
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$type = self::getTypeName($params['type'] ?? '');
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$payload = array_merge(
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$payload,
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is_array($params) ? $params : ['out_trade_no' => $params]
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);
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$payload['appid'] = self::$instance->getConfig($type, '');
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if (Wechat::MODE_SERVICE === self::$instance->getConfig('mode', Wechat::MODE_NORMAL)) {
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$payload['sub_appid'] = self::$instance->getConfig('sub_'.$type, '');
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}
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unset($payload['trade_type'], $payload['type']);
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if (!$preserve_notify_url) {
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unset($payload['notify_url']);
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}
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$payload['sign'] = self::generateSign($payload);
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return $payload;
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}
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/**
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* Generate wechat sign.
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*
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* @author yansongda <me@yansongda.cn>
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*
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* @param array $data
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*
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* @throws InvalidArgumentException
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*/
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public static function generateSign($data): string
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{
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$key = self::$instance->key;
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if (is_null($key)) {
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throw new InvalidArgumentException('Missing Wechat Config -- [key]');
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}
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ksort($data);
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$string = md5(self::getSignContent($data).'&key='.$key);
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Log::debug('Wechat Generate Sign Before UPPER', [$data, $string]);
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return strtoupper($string);
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}
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/**
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* Generate sign content.
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*
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* @author yansongda <me@yansongda.cn>
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*
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* @param array $data
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*/
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public static function getSignContent($data): string
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{
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$buff = '';
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foreach ($data as $k => $v) {
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$buff .= ('sign' != $k && '' != $v && !is_array($v)) ? $k.'='.$v.'&' : '';
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}
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Log::debug('Wechat Generate Sign Content Before Trim', [$data, $buff]);
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return trim($buff, '&');
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}
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/**
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* Decrypt refund contents.
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*
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* @author yansongda <me@yansongda.cn>
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*
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* @param string $contents
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*/
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public static function decryptRefundContents($contents): string
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{
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return openssl_decrypt(
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base64_decode($contents),
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'AES-256-ECB',
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md5(self::$instance->key),
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OPENSSL_RAW_DATA
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);
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}
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/**
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* Convert array to xml.
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*
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* @author yansongda <me@yansongda.cn>
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*
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* @param array $data
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*
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* @throws InvalidArgumentException
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*/
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public static function toXml($data): string
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{
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if (!is_array($data) || count($data) <= 0) {
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throw new InvalidArgumentException('Convert To Xml Error! Invalid Array!');
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}
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$xml = '<xml>';
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foreach ($data as $key => $val) {
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$xml .= is_numeric($val) ? '<'.$key.'>'.$val.'</'.$key.'>' :
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'<'.$key.'><![CDATA['.$val.']]></'.$key.'>';
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}
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$xml .= '</xml>';
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return $xml;
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}
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/**
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* Convert xml to array.
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*
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* @author yansongda <me@yansongda.cn>
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*
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* @param string $xml
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*
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* @throws InvalidArgumentException
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*/
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public static function fromXml($xml): array
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{
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if (!$xml) {
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throw new InvalidArgumentException('Convert To Array Error! Invalid Xml!');
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}
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libxml_disable_entity_loader(true);
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return json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA), JSON_UNESCAPED_UNICODE), true);
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}
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/**
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* Get service config.
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*
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* @author yansongda <me@yansongda.cn>
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*
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* @param string|null $key
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* @param mixed|null $default
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*
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* @return mixed|null
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*/
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public function getConfig($key = null, $default = null)
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{
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if (is_null($key)) {
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return $this->config->all();
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}
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if ($this->config->has($key)) {
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return $this->config[$key];
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}
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return $default;
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}
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/**
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* Get app id according to param type.
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*
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* @author yansongda <me@yansongda.cn>
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*
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* @param string $type
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*/
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public static function getTypeName($type = ''): string
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{
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switch ($type) {
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case '':
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$type = 'app_id';
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break;
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case 'app':
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$type = 'appid';
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break;
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default:
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$type = $type.'_id';
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}
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return $type;
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}
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/**
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* Get Base Uri.
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*
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* @author yansongda <me@yansongda.cn>
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*
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* @return string
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*/
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public function getBaseUri()
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{
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return $this->baseUri;
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}
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/**
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* processingApiResult.
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*
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* @author yansongda <me@yansongda.cn>
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*
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* @param $endpoint
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*
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* @throws GatewayException
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* @throws InvalidArgumentException
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* @throws InvalidSignException
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*
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* @return Collection
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*/
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protected static function processingApiResult($endpoint, array $result)
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{
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if (!isset($result['return_code']) || 'SUCCESS' != $result['return_code']) {
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throw new GatewayException('Get Wechat API Error:'.($result['return_msg'] ?? $result['retmsg'] ?? ''), $result);
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}
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if (isset($result['result_code']) && 'SUCCESS' != $result['result_code']) {
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throw new BusinessException('Wechat Business Error: '.$result['err_code'].' - '.$result['err_code_des'], $result);
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}
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if (false !== strpos($endpoint, 'xdc/apiv2getsignkey') ||
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false !== strpos($endpoint, 'mmpaymkttransfers') ||
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self::generateSign($result) === $result['sign']) {
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return new Collection($result);
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}
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Events::dispatch(new Events\SignFailed('Wechat', '', $result));
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throw new InvalidSignException('Wechat Sign Verify FAILED', $result);
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}
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/**
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* setDevKey.
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*
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* @author yansongda <me@yansongda.cn>
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*
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* @throws GatewayException
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* @throws InvalidArgumentException
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* @throws InvalidSignException
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* @throws Exception
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*
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* @return Support
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*/
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private static function setDevKey()
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{
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if (Wechat::MODE_DEV == self::$instance->mode) {
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$data = [
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'mch_id' => self::$instance->mch_id,
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'nonce_str' => Str::random(),
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];
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$data['sign'] = self::generateSign($data);
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$result = self::requestApi('https://api.mch.weixin.qq.com/xdc/apiv2getsignkey/sign/getsignkey', $data);
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self::$instance->config->set('key', $result['sandbox_signkey']);
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}
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return self::$instance;
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}
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/**
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* Set Http options.
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*
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* @author yansongda <me@yansongda.cn>
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*/
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private function setHttpOptions(): self
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{
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if ($this->config->has('http') && is_array($this->config->get('http'))) {
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$this->config->forget('http.base_uri');
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$this->httpOptions = $this->config->get('http');
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}
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return $this;
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}
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}
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