전략편집기 기준값 보조지표 설정값 동기화

frontend/src/utils/thresholdSymbols.ts

@@ -0,0 +1,93 @@
+/** 보조지표 차트 hline 역할 — DSL에 숫자(K_70) 대신 저장해 DB 설정 변경 시 자동 반영 */
+export const THRESHOLD_HL_OVER = 'HL_OVER';
+export const THRESHOLD_HL_MID = 'HL_MID';
+export const THRESHOLD_HL_UNDER = 'HL_UNDER';
+
+export type ThresholdHlineRole = typeof THRESHOLD_HL_OVER | typeof THRESHOLD_HL_MID | typeof THRESHOLD_HL_UNDER;
+
+export function isThresholdSymbol(field?: string): boolean {
+  return field === THRESHOLD_HL_OVER || field === THRESHOLD_HL_MID || field === THRESHOLD_HL_UNDER;
+}
+
+export function isThresholdFieldOrSymbol(field?: string): boolean {
+  return !!field && (field.startsWith('K_') || isThresholdSymbol(field));
+}
+
+type HlThresh = { over?: number; mid?: number; under?: number };
+
+export function resolveThresholdFromDef(
+  field: string | undefined,
+  indicatorType: string,
+  hlThresh: Record<string, HlThresh>,
+): number | null {
+  if (!field) return null;
+  const th = hlThresh[indicatorType] ?? {};
+  if (field === THRESHOLD_HL_OVER) return th.over ?? null;
+  if (field === THRESHOLD_HL_MID) return th.mid ?? null;
+  if (field === THRESHOLD_HL_UNDER) return th.under ?? null;
+  if (field.startsWith('K_')) {
+    const n = parseFloat(field.slice(2));
+    return Number.isFinite(n) ? n : null;
+  }
+  return null;
+}
+
+/** 레거시 K_ 값 → hline 역할 심볼 (정확 일치 우선, 없으면 가장 가까운 역할) */
+export function inferThresholdSymbolFromLegacy(
+  field: string | undefined,
+  indicatorType: string,
+  hlThresh: Record<string, HlThresh>,
+): string | undefined {
+  if (!field?.startsWith('K_')) return field;
+  const val = parseFloat(field.slice(2));
+  if (!Number.isFinite(val)) return field;
+  const th = hlThresh[indicatorType] ?? {};
+  const eps = 0.0001;
+  if (th.over != null && Math.abs(th.over - val) < eps) return THRESHOLD_HL_OVER;
+  if (th.mid != null && Math.abs(th.mid - val) < eps) return THRESHOLD_HL_MID;
+  if (th.under != null && Math.abs(th.under - val) < eps) return THRESHOLD_HL_UNDER;
+
+  const candidates: { role: ThresholdHlineRole; v: number }[] = [];
+  if (th.over != null) candidates.push({ role: THRESHOLD_HL_OVER, v: th.over });
+  if (th.mid != null) candidates.push({ role: THRESHOLD_HL_MID, v: th.mid });
+  if (th.under != null) candidates.push({ role: THRESHOLD_HL_UNDER, v: th.under });
+  if (candidates.length === 0) return defaultInheritedThresholdField(indicatorType);
+
+  let best = candidates[0];
+  let bestDiff = Math.abs(best.v - val);
+  for (const c of candidates.slice(1)) {
+    const d = Math.abs(c.v - val);
+    if (d < bestDiff) {
+      best = c;
+      bestDiff = d;
+    }
+  }
+  return best.role;
+}
+
+/** 상속 모드(thresholdOverride=false) — K_ 스냅샷을 hline 역할 심볼로 정규화 */
+export function resolveInheritedThresholdField(
+  field: string | undefined,
+  indicatorType: string,
+  hlThresh: Record<string, HlThresh>,
+): string | undefined {
+  if (!field) return field;
+  if (isThresholdSymbol(field)) return field;
+  if (field.startsWith('K_')) {
+    return inferThresholdSymbolFromLegacy(field, indicatorType, hlThresh)
+      ?? defaultInheritedThresholdField(indicatorType);
+  }
+  return field;
+}
+
+/** 상속 모드 기본 rightField — 과열선 역할 */
+export function defaultInheritedThresholdField(indicatorType: string): string {
+  switch (indicatorType) {
+    case 'DISPARITY':
+    case 'VOLUME_OSC':
+    case 'TRIX':
+      return THRESHOLD_HL_MID;
+    default:
+      return THRESHOLD_HL_OVER;
+  }
+}