obv 선 표시

frontend/src/hooks/useStompChartData.ts

@@ -7,7 +7,7 @@ import { parseStompJson } from '../utils/stompMessage';
 import { subscribeStompTopic } from '../utils/stompChartBroker';
 import { timeframeToCandleType } from '../utils/chartCandleType';
 import { getCandleStart, TF_SECONDS } from '../utils/upbitApi';
-import { DISPLAY_COUNT, WARMUP_COUNT } from './useUpbitData';
+import { DISPLAY_COUNT, WARMUP_COUNT, OBV_DEEP_HISTORY } from './useUpbitData';
 import type { WsStatus } from './useUpbitData';
 import { API_BASE } from '../utils/backendApi';
 import { fetchUpbitCandlesCached } from '../utils/requestCache';
@@ -53,6 +53,8 @@ interface Options {
   onTickUpdate: (bar: OHLCVBar) => void;
   onNewCandle: (bar: OHLCVBar) => void;
   enabled?: boolean;
+  /** OBV 누적 정확도 — 더 많은 초기 봉 로드 */
+  deepObvHistory?: boolean;
 }
 
 interface Return {
@@ -177,7 +179,9 @@ export function useStompChartData(
     const marketChanged = prevMarketRef.current !== '' && prevMarketRef.current !== market;
     prevMarketRef.current = market;
 
-    const count = DISPLAY_COUNT + WARMUP_COUNT;
+    const count = opts.deepObvHistory
+      ? OBV_DEEP_HISTORY
+      : DISPLAY_COUNT + WARMUP_COUNT;
     loadInitialBars(market, timeframe, count, marketChanged)
       .then(newBars => {
         if (cancelled) return;
@@ -202,7 +206,7 @@ export function useStompChartData(
         setIsLoading(false);
       });
     return () => { cancelled = true; };
-  }, [market, candleType, timeframe, opts.enabled]);
+  }, [market, candleType, timeframe, opts.enabled, opts.deepObvHistory]);
 
   const syncBarsToReactIfNeeded = useCallback((marketId: string) => {
     if (!bootstrapFromStompRef.current) return;