Add Signal auto-group creation

apps/bridge-worker/tasks/signal/receive-signal-message.ts

@@ -1,4 +1,6 @@
 import { db, getWorkerUtils } from "@link-stack/bridge-common";
+import * as signalApi from "@link-stack/signal-api";
+const { Configuration, GroupsApi } = signalApi;
 
 interface ReceiveSignalMessageTaskOptions {
   token: string;
@@ -10,6 +12,7 @@ interface ReceiveSignalMessageTaskOptions {
   attachment?: string;
   filename?: string;
   mimeType?: string;
+  isGroup?: boolean;
 }
 
 const receiveSignalMessageTask = async ({
@@ -22,6 +25,7 @@ const receiveSignalMessageTask = async ({
   attachment,
   filename,
   mimeType,
+  isGroup,
 }: ReceiveSignalMessageTaskOptions): Promise<void> => {
   const worker = await getWorkerUtils();
   const row = await db
@@ -31,8 +35,43 @@ const receiveSignalMessageTask = async ({
     .executeTakeFirstOrThrow();
 
   const backendId = row.id;
+  let finalTo = to;
+
+  // Check if auto-group creation is enabled and this is NOT already a group message
+  const enableAutoGroups = process.env.BRIDGE_SIGNAL_AUTO_GROUPS === "true";
+
+  if (enableAutoGroups && !isGroup && from && to) {
+    try {
+      const config = new Configuration({
+        basePath: process.env.BRIDGE_SIGNAL_URL,
+      });
+      const groupsClient = new GroupsApi(config);
+
+      // Create new group for this conversation
+      const groupName = `Support: ${from}`;
+      const createGroupResponse = await groupsClient.v1GroupsNumberPost({
+        number: row.phoneNumber,
+        data: {
+          name: groupName,
+          members: [from],
+          description: "Private support conversation",
+        },
+      });
+
+      if (createGroupResponse.id) {
+        finalTo = createGroupResponse.id;
+        console.log(
+          `Created new Signal group ${finalTo} for conversation with ${from}`,
+        );
+      }
+    } catch (error) {
+      console.error("Error creating Signal group:", error);
+      // Continue with original 'to' if group creation fails
+    }
+  }
+
   const payload = {
-    to,
+    to: finalTo,
     from,
     message_id: messageId,
     sent_at: sentAt,