가상매매 기본전략 설정

frontend/src/hooks/useVirtualTradingCore.ts

@@ -37,8 +37,11 @@ import {
 import { pinStrategyEvaluationTimeframes } from '../utils/strategyTimeframePin';
 import { persistVirtualTargetPinned } from '../utils/virtualTargetMutations';
 import {
+  applyDefaultGlobalStrategyToSession,
+  ensureDefaultGlobalStrategyId,
   freezeTargetsBeforeGlobalStrategyChange,
   resolveVirtualTargetStrategyId,
+  resolveStrategyIdForNewTarget,
 } from '../utils/virtualTargetStrategy';
 import {
   isVirtualTargetAddAllowed,
@@ -143,12 +146,13 @@ export function useVirtualTradingCore(options: UseVirtualTradingCoreOptions = {}
           const validIds = new Set(
             s.map(x => x.id).filter((id): id is number => id != null && id > 0),
           );
-          setSession(prev => {
-            const next = prev.globalStrategyId != null && !validIds.has(prev.globalStrategyId)
-              ? { ...prev, globalStrategyId: null }
-              : prev;
-            return mergeVirtualSessionWithAppLive(next, appLiveStrategyId);
-          });
+          setSession(prev =>
+            applyDefaultGlobalStrategyToSession(
+              mergeVirtualSessionWithAppLive(prev, appLiveStrategyId),
+              s,
+              appLiveStrategyId,
+            ),
+          );
           setTargets(prev =>
             prev.map(t =>
               t.strategyId != null && !validIds.has(t.strategyId)
@@ -285,13 +289,13 @@ export function useVirtualTradingCore(options: UseVirtualTradingCoreOptions = {}
     const names = resolveVirtualTargetNames(market, meta?.koreanName, meta?.englishName);
     setTargets(prev => [...prev, {
       market,
-      strategyId: session.globalStrategyId,
+      strategyId: resolveStrategyIdForNewTarget(session.globalStrategyId, strategies),
       koreanName: names.koreanName,
       englishName: names.englishName,
     }]);
     setSelectedMarket(market);
     return true;
-  }, [targets, session.globalStrategyId, virtualTargetMaxCount]);
+  }, [targets, session.globalStrategyId, strategies, virtualTargetMaxCount]);
 
   const handleRemoveTarget = useCallback((market: string) => {
     setTargets(prev => prev.filter(x => x.market !== market));
@@ -320,20 +324,25 @@ export function useVirtualTradingCore(options: UseVirtualTradingCoreOptions = {}
       window.alert('투자대상 종목을 먼저 추가하세요.');
       return;
     }
-    if (!session.globalStrategyId) {
+    const globalStrategyId = ensureDefaultGlobalStrategyId(session.globalStrategyId, strategies);
+    if (!globalStrategyId) {
       window.alert('투자전략을 선택하세요.');
       return;
     }
-    const globalStrat = strategies.find(s => s.id === session.globalStrategyId);
+    const sessionForStart = { ...session, globalStrategyId };
+    if (session.globalStrategyId !== globalStrategyId) {
+      setSession(sessionForStart);
+    }
+    const globalStrat = strategies.find(s => s.id === globalStrategyId);
     const synced = await syncStrategyTimeframesFromLayoutIfNeeded(
-      session.globalStrategyId,
+      globalStrategyId,
       globalStrat,
     );
     if (!synced) return;
-    const ok = await warnStrategyTimeframeMismatch(session.globalStrategyId, globalStrat);
+    const ok = await warnStrategyTimeframeMismatch(globalStrategyId, globalStrat);
     if (!ok) return;
     try {
-      await syncVirtualTargetsToBackend(targets, session, true);
+      await syncVirtualTargetsToBackend(targets, sessionForStart, true);
       setSession(s => ({ ...s, running: true }));
     } catch {
       window.alert('가상투자 시작 설정 저장에 실패했습니다.');