fix: Added group membership validation before sending message to groups

src/whatsapp/controllers/sendMessage.controller.ts

@@ -5,7 +5,6 @@ import {
   SendAudioDto,
   SendButtonDto,
   SendContactDto,
-  SendLinkPreviewDto,
   SendListDto,
   SendLocationDto,
   SendMediaDto,

src/whatsapp/services/whatsapp.service.ts

@@ -1434,6 +1434,12 @@ export class WAStartupService {
       let mentions: string[];
       if (isJidGroup(sender)) {
         try {
+          const groupMetadata = await this.client.groupMetadata(sender);
+
+          if (!groupMetadata) {
+            throw new NotFoundException('Group not found');
+          }
+
           if (options?.mentions) {
             this.logger.verbose('Mentions defined');
 
@@ -1448,7 +1454,6 @@ export class WAStartupService {
               this.logger.verbose('Mentions everyone');
 
               this.logger.verbose('Getting group metadata');
-              const groupMetadata = await this.client.groupMetadata(sender);
               mentions = groupMetadata.participants.map((participant) => participant.id);
               this.logger.verbose('Getting group metadata for mentions');
             } else {