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117 lines
4.0 KiB
117 lines
4.0 KiB
<?php
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namespace App\Services;
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use Illuminate\Support\Facades\Cache;
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use Illuminate\Support\Facades\Http;
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use RuntimeException;
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class WeChatMiniProgramService
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{
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public function getAccessToken(): string
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{
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$appId = config('services.wechat.mini_program.app_id');
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$secret = config('services.wechat.mini_program.secret');
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if (! $appId || ! $secret) {
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throw new RuntimeException('微信小程序 AppID/Secret 未配置');
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}
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return Cache::remember('wechat_miniapp_access_token', 7000, function () use ($appId, $secret) {
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$response = Http::timeout(10)->get('https://api.weixin.qq.com/cgi-bin/token', [
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'grant_type' => 'client_credential',
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'appid' => $appId,
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'secret' => $secret,
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]);
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$payload = $response->json();
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if (! is_array($payload) || ! empty($payload['errcode'])) {
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throw new RuntimeException((string) ($payload['errmsg'] ?? '获取微信 access_token 失败'));
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}
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$token = $payload['access_token'] ?? null;
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if (! is_string($token) || $token === '') {
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throw new RuntimeException('微信 access_token 响应异常');
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}
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return $token;
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});
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}
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public function getUnlimitedWxaCode(string $page, string $scene): string
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{
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$scene = trim($scene);
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if ($scene === '') {
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throw new RuntimeException('签到码不能为空');
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}
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if (strlen($scene) > 32) {
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throw new RuntimeException('签到码不能超过 32 个字符');
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}
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$token = $this->getAccessToken();
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$response = Http::timeout(20)
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->withHeaders(['Content-Type' => 'application/json'])
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->post("https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token={$token}", [
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'scene' => $scene,
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'page' => ltrim($page, '/'),
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'check_path' => false,
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'env_version' => config('services.wechat.mini_program.env_version', 'develop'),
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'width' => 430,
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]);
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$contentType = (string) $response->header('Content-Type');
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if (str_contains($contentType, 'json') || str_starts_with(trim($response->body()), '{')) {
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$payload = $response->json();
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if (is_array($payload) && ! empty($payload['errcode'])) {
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throw new RuntimeException((string) ($payload['errmsg'] ?? '生成小程序码失败'));
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}
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}
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$body = $response->body();
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if ($body === '') {
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throw new RuntimeException('生成小程序码失败：空响应');
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}
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return $body;
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}
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/**
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* @return array{openid: string, unionid?: string, session_key: string}
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*/
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public function codeToSession(string $code): array
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{
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$appId = config('services.wechat.mini_program.app_id');
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$secret = config('services.wechat.mini_program.secret');
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if (! $appId || ! $secret) {
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throw new RuntimeException('微信小程序 AppID/Secret 未配置');
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}
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$response = Http::timeout(10)->get('https://api.weixin.qq.com/sns/jscode2session', [
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'appid' => $appId,
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'secret' => $secret,
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'js_code' => $code,
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'grant_type' => 'authorization_code',
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]);
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$payload = $response->json();
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if (! is_array($payload)) {
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throw new RuntimeException('微信登录响应异常');
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}
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if (! empty($payload['errcode'])) {
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throw new RuntimeException((string) ($payload['errmsg'] ?? '微信登录失败'));
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}
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if (empty($payload['openid'])) {
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throw new RuntimeException('微信登录未返回 openid');
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}
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return [
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'openid' => (string) $payload['openid'],
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'unionid' => isset($payload['unionid']) ? (string) $payload['unionid'] : null,
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'session_key' => (string) ($payload['session_key'] ?? ''),
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];
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}
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}
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