95 lines
3.4 KiB
PHP
95 lines
3.4 KiB
PHP
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<?php
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namespace App\Service\wx;
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use App\Service\common\RedisService;
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use App\Service\common\UtilsService;
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use Illuminate\Support\Facades\Http;
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/**
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* 微信小程序开放接口客户端
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*
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* AppID / AppSecret 来自 nl_wx_app（加密存储），不再硬编码在源码里。
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* access_token 有 7200 秒有效期且并发刷新会互相顶掉，所以缓存进 Redis 复用。
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*/
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class WxMiniService
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{
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private static mixed $_instance;
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private string $baseUrl = 'https://api.weixin.qq.com/';
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public static function getInstance(): null|static
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{
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$name = get_called_class();
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if (!isset(self::$_instance[$name])) {
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self::$_instance[$name] = new static();
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}
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return self::$_instance[$name];
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}
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/**
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* code 换 openid 与 session_key
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*/
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public function jscode2session(string $code): array
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{
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$app = WxAppService::getInstance()->current();
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if (($app['app_id'] ?? '') === '' || ($app['app_secret'] ?? '') === '') {
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UtilsService::getInstance()->errorThrow('小程序 AppID/AppSecret 未配置');
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}
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$result = Http::asJson()->get($this->baseUrl . 'sns/jscode2session', [
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'appid' => $app['app_id'],
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'secret' => $app['app_secret'],
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'js_code' => $code,
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'grant_type' => 'authorization_code',
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])->json();
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if (!empty($result['errcode'])) {
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UtilsService::getInstance()->errorThrow('微信登录失败：' . ($result['errmsg'] ?? '未知错误'));
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}
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if (empty($result['openid'])) {
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UtilsService::getInstance()->errorThrow('微信登录失败：未拿到 openid');
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}
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$result['app_code'] = (string) ($app['code'] ?? '');
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return $result;
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}
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/**
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* 手机号快速验证：前端拿到的 code 换真实号码
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*/
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public function getPhoneNumber(string $phoneCode): string
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{
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$token = $this->accessToken();
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$result = Http::asJson()->post(
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$this->baseUrl . 'wxa/business/getuserphonenumber?access_token=' . $token,
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['code' => $phoneCode]
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)->json();
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if (!empty($result['errcode'])) {
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UtilsService::getInstance()->errorThrow('获取手机号失败：' . ($result['errmsg'] ?? '未知错误'));
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}
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return (string) ($result['phone_info']['phoneNumber'] ?? '');
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}
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/**
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* 接口调用凭证，按 appid 缓存
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*/
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public function accessToken(): string
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{
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$app = WxAppService::getInstance()->current();
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$redis = RedisService::getInstance()->init(config('nl.redis.wechat_token'));
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$cached = $redis->get($app['app_id']);
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if (!empty($cached)) {
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return (string) $cached;
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}
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$result = Http::asJson()->get($this->baseUrl . 'cgi-bin/token', [
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'grant_type' => 'client_credential',
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'appid' => $app['app_id'],
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'secret' => $app['app_secret'],
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])->json();
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if (empty($result['access_token'])) {
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UtilsService::getInstance()->errorThrow('获取 access_token 失败：' . ($result['errmsg'] ?? '未知错误'));
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}
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// 提前 300 秒过期，避免临界点上拿到即将失效的 token
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$redis->set($app['app_id'], $result['access_token'], max(60, (int) ($result['expires_in'] ?? 7200) - 300));
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return (string) $result['access_token'];
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}
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}
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