code cleanup

src/WABinary/jid-utils.ts

@@ -0,0 +1,47 @@
+export const S_WHATSAPP_NET = '@s.whatsapp.net'
+export const OFFICIAL_BIZ_JID = '16505361212@c.us'
+export const SERVER_JID = 'server@c.us'
+export const PSA_WID = '0@c.us';
+export const STORIES_JID = 'status@broadcast'
+
+export type JidServer = 'c.us' | 'g.us' | 'broadcast' | 's.whatsapp.net' | 'call'
+
+export const jidEncode = (user: string | number | null, server: JidServer, device?: number, agent?: number) => {
+    return `${user || ''}${!!agent ? `_${agent}` : ''}${!!device ? `:${device}` : ''}@${server}`
+}
+
+export const jidDecode = (jid: string) => {
+    let sepIdx = typeof jid === 'string' ? jid.indexOf('@') : -1
+    if(sepIdx < 0) {
+        return undefined
+    }
+    const server = jid.slice(sepIdx+1)
+    const userCombined = jid.slice(0, sepIdx)
+
+    const [userAgent, device] = userCombined.split(':')
+    const [user, agent] = userAgent.split('_')
+
+    return {
+        server,
+        user,
+        agent: agent ? +agent : undefined,
+        device: device ? +device : undefined
+    }
+}
+/** is the jid a user */
+export const areJidsSameUser = (jid1: string, jid2: string) => (
+    jidDecode(jid1)?.user === jidDecode(jid2)?.user
+)
+/** is the jid a user */
+export const isJidUser = (jid: string) => (jid?.endsWith('@s.whatsapp.net'))
+/** is the jid a broadcast */
+export const isJidBroadcast = (jid: string) => (jid?.endsWith('@broadcast'))
+/** is the jid a broadcast */
+export const isJidGroup = (jid: string) => (jid?.endsWith('@g.us'))
+/** is the jid the status broadcast */
+export const isJidStatusBroadcast = (jid: string) => jid === 'status@broadcast'
+
+export const jidNormalizedUser = (jid: string) => {
+    const { user, server } = jidDecode(jid)
+    return jidEncode(user, server === 'c.us' ? 's.whatsapp.net' : server as JidServer)
+}