130 lines
3.5 KiB
TypeScript
130 lines
3.5 KiB
TypeScript
import Taro from '@tarojs/taro';
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import { request } from './api';
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const PROMO_ID_KEY = 'dukang_promo_id';
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/** 同一次进入只 touch 一次扫码计数，避免首页反复 onShow 刷量 */
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let lastScanTouchKey = '';
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function safeDecode(raw: string): string {
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try {
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return decodeURIComponent(raw);
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} catch {
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return raw;
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}
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}
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function normalizePromoId(raw: unknown): string | null {
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if (raw == null || raw === '') return null;
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const s = safeDecode(String(raw)).trim();
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// 小程序码 scene 写入的是推广活动数字 ID
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if (!/^\d+$/.test(s)) return null;
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return s;
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}
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type EnterOptionsLike = {
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scene?: string | number;
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query?: Record<string, string | undefined>;
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path?: string;
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};
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/** 从启动/进入参数解析推广活动 ID（优先 query.scene，与 getwxacodeunlimit 一致） */
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export function extractPromoIdFromEnterOptions(opts?: EnterOptionsLike | null): string | null {
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if (!opts) return null;
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const q = opts.query ?? {};
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return (
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normalizePromoId(q.scene) ||
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normalizePromoId(q.promoId) ||
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normalizePromoId(q.pid) ||
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null
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);
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}
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export function getStoredPromoId(): string | null {
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try {
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const v = Taro.getStorageSync(PROMO_ID_KEY);
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return normalizePromoId(v);
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} catch {
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return null;
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}
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}
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export function setStoredPromoId(promoId: string) {
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const id = normalizePromoId(promoId);
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if (!id) return;
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try {
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Taro.setStorageSync(PROMO_ID_KEY, id);
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} catch {
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/* ignore */
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}
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}
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function readEnterOptions(): EnterOptionsLike | null {
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try {
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if (typeof Taro.getEnterOptionsSync === 'function') {
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return Taro.getEnterOptionsSync() as EnterOptionsLike;
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}
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} catch {
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/* ignore */
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}
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try {
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if (typeof Taro.getLaunchOptionsSync === 'function') {
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return Taro.getLaunchOptionsSync() as EnterOptionsLike;
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}
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} catch {
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/* ignore */
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}
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// H5：从 URL query 读取
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if (process.env.TARO_ENV === 'h5' && typeof window !== 'undefined') {
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const params = new URLSearchParams(window.location.search);
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return {
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query: {
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scene: params.get('scene') || undefined,
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promoId: params.get('promoId') || undefined,
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pid: params.get('pid') || undefined,
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},
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};
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}
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return null;
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}
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/**
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* 主页面进入时：取出 scene（活动 ID）本地缓存，并回传 /promo/touch 累加扫码次数。
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* 同一进入会话只计一次扫码。
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*/
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export async function capturePromoSceneAndTouchScan(): Promise<void> {
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const opts = readEnterOptions();
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const fromEnter = extractPromoIdFromEnterOptions(opts);
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if (fromEnter) {
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setStoredPromoId(fromEnter);
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const touchKey = `${fromEnter}|${opts?.path || ''}|${JSON.stringify(opts?.query || {})}|${String(opts?.scene ?? '')}`;
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if (touchKey === lastScanTouchKey) return;
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lastScanTouchKey = touchKey;
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await touchPromo({ promoId: fromEnter, countScan: true });
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return;
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}
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// 无新 scene 时不重复扫码计数
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}
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/** 登录成功后：用已缓存的活动 ID 做归因（不重复加扫码次数） */
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export async function touchStoredPromoAfterLogin(): Promise<void> {
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const promoId = getStoredPromoId();
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if (!promoId) return;
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await touchPromo({ promoId, countScan: false });
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}
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async function touchPromo(input: { promoId: string; countScan: boolean }): Promise<void> {
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try {
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await request('/promo/touch', {
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method: 'POST',
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data: {
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promoId: input.promoId,
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countScan: input.countScan,
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},
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});
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} catch {
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/* 静默失败，不阻断浏览 */
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}
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}
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