65 lines
2.2 KiB
TypeScript
65 lines
2.2 KiB
TypeScript
import { normalizeE164 } from "../utils.js";
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const WHATSAPP_USER_JID_RE = /^(\d+)(?::\d+)?@s\.whatsapp\.net$/i;
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const WHATSAPP_LID_RE = /^(\d+)@lid$/i;
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function stripWhatsAppTargetPrefixes(value: string): string {
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let candidate = value.trim();
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for (;;) {
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const before = candidate;
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candidate = candidate
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.replace(/^whatsapp:/i, "")
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.replace(/^group:/i, "")
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.trim();
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if (candidate === before) return candidate;
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}
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}
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export function isWhatsAppGroupJid(value: string): boolean {
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const candidate = stripWhatsAppTargetPrefixes(value);
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const lower = candidate.toLowerCase();
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if (!lower.endsWith("@g.us")) return false;
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const localPart = candidate.slice(0, candidate.length - "@g.us".length);
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if (!localPart || localPart.includes("@")) return false;
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return /^[0-9]+(-[0-9]+)*$/.test(localPart);
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}
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/**
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* Check if value looks like a WhatsApp user JID (e.g. "41796666864:0@s.whatsapp.net" or "123@lid").
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*/
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export function isWhatsAppUserJid(value: string): boolean {
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const candidate = stripWhatsAppTargetPrefixes(value);
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return WHATSAPP_USER_JID_RE.test(candidate) || WHATSAPP_LID_RE.test(candidate);
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}
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/**
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* Extract the phone number from a WhatsApp user JID.
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* "41796666864:0@s.whatsapp.net" -> "41796666864"
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* "123456@lid" -> "123456"
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*/
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function extractUserJidPhone(jid: string): string | null {
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const userMatch = jid.match(WHATSAPP_USER_JID_RE);
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if (userMatch) return userMatch[1];
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const lidMatch = jid.match(WHATSAPP_LID_RE);
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if (lidMatch) return lidMatch[1];
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return null;
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}
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export function normalizeWhatsAppTarget(value: string): string | null {
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const candidate = stripWhatsAppTargetPrefixes(value);
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if (!candidate) return null;
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if (isWhatsAppGroupJid(candidate)) {
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const localPart = candidate.slice(0, candidate.length - "@g.us".length);
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return `${localPart}@g.us`;
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}
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// Handle user JIDs (e.g. "41796666864:0@s.whatsapp.net")
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if (isWhatsAppUserJid(candidate)) {
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const phone = extractUserJidPhone(candidate);
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if (!phone) return null;
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const normalized = normalizeE164(phone);
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return normalized.length > 1 ? normalized : null;
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}
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const normalized = normalizeE164(candidate);
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return normalized.length > 1 ? normalized : null;
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}
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