fix sms otp retriver

utils/smsRetriever.ts

@@ -0,0 +1,69 @@
+import { Platform } from 'react-native';
+
+type SmsRetrieverModule = {
+    requestPhoneNumber: () => Promise<string>;
+    startSmsRetriever: () => Promise<boolean>;
+    addSmsListener: (callback: (event: { message?: string }) => void) => Promise<boolean>;
+    removeSmsListener: () => void;
+};
+
+function getModule(): SmsRetrieverModule | null {
+    if (Platform.OS !== 'android') return null;
+    return require('react-native-sms-retriever').default as SmsRetrieverModule;
+}
+
+export function extractOtpFromMessage(message: string, length: number): string | null {
+    const exact = new RegExp(`(?:^|[^\\d])(\\d{${length}})(?:[^\\d]|$)`);
+    const m = message.match(exact);
+    if (m) return m[1];
+    const any = message.match(/(\d{4,8})/);
+    if (!any) return null;
+    const digits = any[1];
+    if (digits.length >= length) return digits.slice(0, length);
+    if (digits.length === length) return digits;
+    return null;
+}
+
+/** SMS Retriever：无需 READ_SMS，短信需含 app hash（见 Google 文档） */
+export async function startOtpSmsListener(
+    otpLength: number,
+    onOtp: (otp: string) => void,
+): Promise<() => void> {
+    const mod = getModule();
+    if (!mod) return () => {};
+
+    const stop = () => {
+        try {
+            mod.removeSmsListener();
+        } catch {
+            /* ignore */
+        }
+    };
+
+    try {
+        const registered = await mod.startSmsRetriever();
+        if (!registered) return stop;
+        await mod.addSmsListener((event) => {
+            const msg = event.message ?? '';
+            const otp = extractOtpFromMessage(msg, otpLength);
+            if (otp) {
+                onOtp(otp);
+                stop();
+            }
+        });
+    } catch {
+        stop();
+    }
+    return stop;
+}
+
+/** 系统号码选择器，一次性授权，无需 READ_SMS */
+export async function requestPhoneNumberHint(): Promise<string> {
+    const mod = getModule();
+    if (!mod) throw new Error('仅支持 Android');
+    return mod.requestPhoneNumber();
+}
+
+export function normalizeHintPhone(raw: string, mobileLength = 10): string {
+    return raw.replace(/\D/g, '').slice(-mobileLength);
+}