refactor: handle group stuff in a separate function

src/Socket/messages-recv.ts

@@ -189,6 +189,74 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 		}
 	}
 
+	const handleGroupNotification = (
+		participant: string,
+		child: BinaryNode,
+		msg: Partial<proto.IWebMessageInfo>
+	) => {
+		switch (child?.tag) {
+		case 'create':
+			const metadata = extractGroupMetadata(child)
+
+			msg.messageStubType = WAMessageStubType.GROUP_CREATE
+			msg.messageStubParameters = [metadata.subject]
+			msg.key = { participant: metadata.owner }
+
+			ev.emit('chats.upsert', [{
+				id: metadata.id,
+				name: metadata.subject,
+				conversationTimestamp: metadata.creation,
+			}])
+			ev.emit('groups.upsert', [metadata])
+			break
+		case 'ephemeral':
+		case 'not_ephemeral':
+			msg.message = {
+				protocolMessage: {
+					type: proto.Message.ProtocolMessage.Type.EPHEMERAL_SETTING,
+					ephemeralExpiration: +(child.attrs.expiration || 0)
+				}
+			}
+			break
+		case 'promote':
+		case 'demote':
+		case 'remove':
+		case 'add':
+		case 'leave':
+			const stubType = `GROUP_PARTICIPANT_${child.tag!.toUpperCase()}`
+			msg.messageStubType = WAMessageStubType[stubType]
+
+			const participants = getBinaryNodeChildren(child, 'participant').map(p => p.attrs.jid)
+			if(
+				participants.length === 1 &&
+					// if recv. "remove" message and sender removed themselves
+					// mark as left
+					areJidsSameUser(participants[0], participant) &&
+					child.tag === 'remove'
+			) {
+				msg.messageStubType = WAMessageStubType.GROUP_PARTICIPANT_LEAVE
+			}
+
+			msg.messageStubParameters = participants
+			break
+		case 'subject':
+			msg.messageStubType = WAMessageStubType.GROUP_CHANGE_SUBJECT
+			msg.messageStubParameters = [ child.attrs.subject ]
+			break
+		case 'announcement':
+		case 'not_announcement':
+			msg.messageStubType = WAMessageStubType.GROUP_CHANGE_ANNOUNCE
+			msg.messageStubParameters = [ (child.tag === 'announcement') ? 'on' : 'off' ]
+			break
+		case 'locked':
+		case 'unlocked':
+			msg.messageStubType = WAMessageStubType.GROUP_CHANGE_RESTRICT
+			msg.messageStubParameters = [ (child.tag === 'locked') ? 'on' : 'off' ]
+			break
+
+		}
+	}
+
 	const processNotification = async(node: BinaryNode) => {
 		const result: Partial<proto.IWebMessageInfo> = { }
 		const [child] = getAllBinaryNodeChildren(node)
@@ -196,68 +264,7 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 
 		switch (nodeType) {
 		case 'w:gp2':
-			switch (child?.tag) {
+			handleGroupNotification(node.attrs.participant, child, result)
-			case 'create':
-				const metadata = extractGroupMetadata(child)
-
-				result.messageStubType = WAMessageStubType.GROUP_CREATE
-				result.messageStubParameters = [metadata.subject]
-				result.key = { participant: metadata.owner }
-
-				ev.emit('chats.upsert', [{
-					id: metadata.id,
-					name: metadata.subject,
-					conversationTimestamp: metadata.creation,
-				}])
-				ev.emit('groups.upsert', [metadata])
-				break
-			case 'ephemeral':
-			case 'not_ephemeral':
-				result.message = {
-					protocolMessage: {
-						type: proto.Message.ProtocolMessage.Type.EPHEMERAL_SETTING,
-						ephemeralExpiration: +(child.attrs.expiration || 0)
-					}
-				}
-				break
-			case 'promote':
-			case 'demote':
-			case 'remove':
-			case 'add':
-			case 'leave':
-				const stubType = `GROUP_PARTICIPANT_${child.tag!.toUpperCase()}`
-				result.messageStubType = WAMessageStubType[stubType]
-
-				const participants = getBinaryNodeChildren(child, 'participant').map(p => p.attrs.jid)
-				if(
-					participants.length === 1 &&
-                        // if recv. "remove" message and sender removed themselves
-                        // mark as left
-                        areJidsSameUser(participants[0], node.attrs.participant) &&
-                        child.tag === 'remove'
-				) {
-					result.messageStubType = WAMessageStubType.GROUP_PARTICIPANT_LEAVE
-				}
-
-				result.messageStubParameters = participants
-				break
-			case 'subject':
-				result.messageStubType = WAMessageStubType.GROUP_CHANGE_SUBJECT
-				result.messageStubParameters = [ child.attrs.subject ]
-				break
-			case 'announcement':
-			case 'not_announcement':
-				result.messageStubType = WAMessageStubType.GROUP_CHANGE_ANNOUNCE
-				result.messageStubParameters = [ (child.tag === 'announcement') ? 'on' : 'off' ]
-				break
-			case 'locked':
-			case 'unlocked':
-				result.messageStubType = WAMessageStubType.GROUP_CHANGE_RESTRICT
-				result.messageStubParameters = [ (child.tag === 'locked') ? 'on' : 'off' ]
-				break
-
-			}
-
 			break
 		case 'mediaretry':
 			const event = decodeMediaRetryNode(node)