chat implemented

need testing

apps/admin/src/app/api/chat/threads/[id]/route.ts

@@ -0,0 +1,52 @@
+import { NextResponse } from "next/server";
+import { auth } from "@clerk/nextjs/server";
+import { ensureUserSynced } from "@/lib/sync-user";
+import { getDatabase } from "@/lib/database";
+import { isChatError, listThreadsForUser } from "@/lib/chat";
+import log from "@/lib/logger";
+
+interface Params {
+  params: Promise<{ id: string }>;
+}
+
+export async function GET(_request: Request, { params }: Params) {
+  try {
+    const { userId } = await auth();
+    if (!userId) {
+      return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+    }
+
+    const { id: threadId } = await params;
+    const db = await getDatabase();
+    const currentUser = await ensureUserSynced(userId, db);
+    if (!currentUser) {
+      return NextResponse.json({ error: "Forbidden" }, { status: 403 });
+    }
+
+    const threads = await listThreadsForUser({
+      id: currentUser.id,
+      role: currentUser.role,
+      gymId: currentUser.gymId,
+    });
+
+    const thread = threads.find((item) => item.id === threadId);
+    if (!thread) {
+      return NextResponse.json({ error: "Thread not found" }, { status: 404 });
+    }
+
+    return NextResponse.json({ thread });
+  } catch (error) {
+    if (isChatError(error)) {
+      return NextResponse.json(
+        { error: error.message },
+        { status: error.status },
+      );
+    }
+
+    log.error("Failed to fetch chat thread", error);
+    return NextResponse.json(
+      { error: "Internal server error" },
+      { status: 500 },
+    );
+  }
+}