Count single attachment array

Author: rushatgabhane

src/libs/actions/Report/index.ts

@@ -1325,7 +1325,20 @@ function addAttachmentWithComment({
     }
 
     // Multiple attachments - first: combine text + first attachment as a single action
-    addActions({report, notifyReportID, ancestors, timezoneParam: timezone, currentUserAccountID, text, file: attachments?.at(0), isInSidePanel, delegateAccountID, conciergeReportID});
+    // Only a lone attachment threads, since each of several attachments posts its own message.
+    addActions({
+        report,
+        notifyReportID,
+        ancestors,
+        timezoneParam: timezone,
+        currentUserAccountID,
+        text,
+        file: attachments?.at(0),
+        isInSidePanel,
+        delegateAccountID,
+        conciergeReportID,
+        conciergeThreadReportID: attachments.length === 1 ? conciergeThreadReportID : undefined,
+    });
 
     // Remaining: attachment-only actions (no text duplication)
     for (let i = 1; i < attachments?.length; i += 1) {

src/pages/inbox/report/ReportActionCompose/useComposerSubmit.ts

@@ -93,6 +93,7 @@ function useComposerSubmit(reportID: string) {
         const shouldRespondInThread = reportID === conciergeReportID && !isInSidePanel && isBetaEnabled(CONST.BETAS.CONCIERGE_RESPOND_IN_THREAD);
 
         if (attachmentFileRef.current) {
+            const attachmentCount = Array.isArray(attachmentFileRef.current) ? attachmentFileRef.current.length : 1;
             addAttachmentWithComment({
                 report: targetReport,
                 notifyReportID: reportID,
@@ -108,7 +109,7 @@ function useComposerSubmit(reportID: string) {
                 conciergeReportID,
 
                 // A send with several attachments posts one message per attachment, so it stays in the DM.
-                conciergeThreadReportID: shouldRespondInThread && !Array.isArray(attachmentFileRef.current) ? generateReportID() : undefined,
+                conciergeThreadReportID: shouldRespondInThread && attachmentCount === 1 ? generateReportID() : undefined,
             });
             attachmentFileRef.current = null;
             return;