From b0c7806cb66774b0921b5aa75814c12329194c8c Mon Sep 17 00:00:00 2001
From: u1 <u1@rv32i.pl>
Date: Wed, 7 Jan 2026 07:56:45 +0000
Subject: [PATCH] feat(chart): expose bucketSeconds meta

---
 apps/visualizer/src/features/chart/useChartData.ts | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/apps/visualizer/src/features/chart/useChartData.ts b/apps/visualizer/src/features/chart/useChartData.ts
index 25d72a9..6795ddd 100644
--- a/apps/visualizer/src/features/chart/useChartData.ts
+++ b/apps/visualizer/src/features/chart/useChartData.ts
@@ -14,6 +14,7 @@ type Params = {
 type Result = {
   candles: Candle[];
   indicators: ChartIndicators;
+  meta: { tf: string; bucketSeconds: number } | null;
   loading: boolean;
   error: string | null;
   refresh: () => Promise<void>;
@@ -22,6 +23,7 @@ type Result = {
 export function useChartData({ symbol, source, tf, limit, pollMs }: Params): Result {
   const [candles, setCandles] = useState<Candle[]>([]);
   const [indicators, setIndicators] = useState<ChartIndicators>({});
+  const [meta, setMeta] = useState<{ tf: string; bucketSeconds: number } | null>(null);
   const [loading, setLoading] = useState(false);
   const [error, setError] = useState<string | null>(null);
   const inFlight = useRef(false);
@@ -34,6 +36,7 @@ export function useChartData({ symbol, source, tf, limit, pollMs }: Params): Res
       const res = await fetchChart({ symbol, source, tf, limit });
       setCandles(res.candles);
       setIndicators(res.indicators);
+      setMeta(res.meta);
       setError(null);
     } catch (e: any) {
       setError(String(e?.message || e));
@@ -50,8 +53,7 @@ export function useChartData({ symbol, source, tf, limit, pollMs }: Params): Res
   useInterval(() => void fetchOnce(), pollMs);
 
   return useMemo(
-    () => ({ candles, indicators, loading, error, refresh: fetchOnce }),
-    [candles, indicators, loading, error, fetchOnce]
+    () => ({ candles, indicators, meta, loading, error, refresh: fetchOnce }),
+    [candles, indicators, meta, loading, error, fetchOnce]
   );
 }
-