40 lines
1.2 KiB
TypeScript
40 lines
1.2 KiB
TypeScript
import { createHash } from 'node:crypto';
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const LBS_HOST = 'https://apis.map.qq.com';
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/**
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* 腾讯位置服务 WebServiceAPI（GET）签名 URL。
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* 控制台开启 SN/签名校验后须附带 sig；SecretKey 仅服务端使用。
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*
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* sig = md5(请求路径 + "?" + 按参数名升序的原始 query + SK)
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* @see https://lbs.qq.com/FAQ/server_faq.html
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*/
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export function buildTencentLbsRequestUrl(
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path: string,
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params: Record<string, string>,
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options: { key: string; secretKey?: string },
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): string {
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const key = options.key.trim();
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if (!key) {
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throw new Error('TENCENT_LBS_KEY 未配置');
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}
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const pathname = (path.startsWith('/') ? path : `/${path}`).replace(/\/+$/, '') || '/';
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const all: Record<string, string> = { ...params, key };
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const sortedKeys = Object.keys(all).sort();
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const rawQuery = sortedKeys.map((k) => `${k}=${all[k]}`).join('&');
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const search = new URLSearchParams();
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for (const k of sortedKeys) {
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search.set(k, all[k]);
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}
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const sk = options.secretKey?.trim();
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if (sk) {
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const sig = createHash('md5').update(`${pathname}?${rawQuery}${sk}`).digest('hex');
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search.set('sig', sig);
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}
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return `${LBS_HOST}${pathname}?${search.toString()}`;
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}
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