feat: add event that handles join approval requests (#802)

* initial commit

* lint

* add type in method

* add more actions / fixes participant jid / rename event

* fixes

* more fixes

* fix typing

* change 'reject' to 'rejected'

* chore:linting

---------

Co-authored-by: Rajeh Taher <rajeh@reforward.dev>

src/Types/Events.ts

@@ -4,7 +4,7 @@ import { AuthenticationCreds } from './Auth'
 import { WACallEvent } from './Call'
 import { Chat, ChatUpdate, PresenceData } from './Chat'
 import { Contact } from './Contact'
-import { GroupMetadata, ParticipantAction } from './GroupMetadata'
+import { GroupMetadata, ParticipantAction, RequestJoinAction, RequestJoinMethod } from './GroupMetadata'
 import { Label } from './Label'
 import { LabelAssociation } from './LabelAssociation'
 import { MessageUpsertType, MessageUserReceiptUpdate, WAMessage, WAMessageKey, WAMessageUpdate } from './Message'
@@ -52,6 +52,7 @@ export type BaileysEventMap = {
     'groups.update': Partial<GroupMetadata>[]
     /** apply an action to participants in a group */
     'group-participants.update': { id: string, author: string, participants: string[], action: ParticipantAction }
+    'group.join-request': { id: string, author: string, participant: string, action: RequestJoinAction, method: RequestJoinMethod }
 
     'blocklist.set': { blocklist: string[] }
     'blocklist.update': { blocklist: string[], type: 'add' | 'remove' }

src/Types/GroupMetadata.ts

@@ -4,6 +4,10 @@ export type GroupParticipant = (Contact & { isAdmin?: boolean, isSuperAdmin?: bo
 
 export type ParticipantAction = 'add' | 'remove' | 'promote' | 'demote'
 
+export type RequestJoinAction = 'created' | 'revoked' | 'rejected'
+
+export type RequestJoinMethod = 'invite_link' | 'linked_group_join' | 'non_admin_add' | undefined
+
 export interface GroupMetadata {
     id: string
     owner: string | undefined