feat: handle picture change events

Example/example.ts

@@ -152,6 +152,17 @@ const startSock = async() => {
 				console.log(events['chats.update'])
 			}
 
+			if(events['contacts.update']) {
+				for(const contact of events['contacts.update']) {
+					if(typeof contact.imgUrl !== 'undefined') {
+						const newUrl = contact.imgUrl === null ? null : await sock!.profilePictureUrl(contact.id!)
+						console.log(
+							`contact ${contact.id} has a new profile pic: ${newUrl}`,
+						)
+					}
+				}
+			}
+
 			if(events['chats.delete']) {
 				console.log('chats deleted ', events['chats.delete'])
 			}

src/Socket/messages-recv.ts

@@ -261,6 +261,7 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 		const result: Partial<proto.IWebMessageInfo> = { }
 		const [child] = getAllBinaryNodeChildren(node)
 		const nodeType = node.attrs.type
+		const from = jidNormalizedUser(node.attrs.from)
 
 		switch (nodeType) {
 		case 'w:gp2':
@@ -291,10 +292,26 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 			break
 		case 'picture':
 			const setPicture = getBinaryNodeChild(node, 'set')
-			if(setPicture) {
+			const delPicture = getBinaryNodeChild(node, 'delete')
+
+			ev.emit('contacts.update', [{
+				id: from,
+				imgUrl: setPicture ? 'changed' : null
+			}])
+
+			if(isJidGroup(from)) {
+				const node = setPicture || delPicture
 				result.messageStubType = WAMessageStubType.GROUP_CHANGE_ICON
-				result.messageStubParameters = [ setPicture.attrs.id ]
-				result.participant = setPicture.attrs.author
+
+				if(setPicture) {
+					result.messageStubParameters = [ setPicture.attrs.id ]
+				}
+
+				result.participant = node?.attrs.author
+				result.key = {
+					...result.key || {},
+					participant: setPicture?.attrs.author
+				}
 			}
 
 			break

src/Types/Contact.ts

@@ -7,6 +7,13 @@ export interface Contact {
     /** I have no idea */
     verifiedName?: string
     // Baileys Added
-    imgUrl?: string
+    /**
+     * Url of the profile picture of the contact
+     *
+     * 'changed' => if the profile picture has changed
+     * null => if the profile picture has not been set (default profile picture)
+     * any other string => url of the profile picture
+     */
+    imgUrl?: string | null | 'changed'
     status?: string
 }