전략빌더 수정

backend/src/main/java/com/goldenchart/service/StrategyDslToTa4jAdapter.java

@@ -12,6 +12,9 @@ import org.ta4j.core.indicators.adx.*;
 import org.ta4j.core.indicators.averages.*;
 import org.ta4j.core.indicators.bollinger.*;
 import org.ta4j.core.indicators.helpers.*;
+import org.ta4j.core.indicators.donchian.DonchianChannelLowerIndicator;
+import org.ta4j.core.indicators.donchian.DonchianChannelMiddleIndicator;
+import org.ta4j.core.indicators.donchian.DonchianChannelUpperIndicator;
 import org.ta4j.core.indicators.ichimoku.*;
 import org.ta4j.core.indicators.statistics.StandardDeviationIndicator;
 import org.ta4j.core.indicators.CachedIndicator;
@@ -81,6 +84,7 @@ public class StrategyDslToTa4jAdapter {
         Map.entry("BWI",                  "BBBandWidth"),
         Map.entry("VR",                   "VR"),
         Map.entry("DISPARITY",            "Disparity"),
+        Map.entry("DONCHIAN",             "DonchianChannels"),
         Map.entry("VOLUME",               "VOLUME")
     );
 
@@ -352,6 +356,19 @@ public class StrategyDslToTa4jAdapter {
             return newPsychIndicator(s, intP(p, "length", 10), true);
         // Williams %R
         if (field.equals("WILLIAMS_R_VALUE")) return new WilliamsRIndicator(s, intP(p, "length", 14));
+        // Donchian Channel — DC_UPPER_20 / DC_LOWER_10 등 기간 접미사
+        if (field.startsWith("DC_UPPER_")) {
+            int period = parseTrailingInt(field, "DC_UPPER_", intP(p, "length", 20));
+            return new DonchianChannelUpperIndicator(s, period);
+        }
+        if (field.startsWith("DC_LOWER_")) {
+            int period = parseTrailingInt(field, "DC_LOWER_", intP(p, "length", 20));
+            return new DonchianChannelLowerIndicator(s, period);
+        }
+        if (field.startsWith("DC_MIDDLE_")) {
+            int period = parseTrailingInt(field, "DC_MIDDLE_", intP(p, "length", 20));
+            return new DonchianChannelMiddleIndicator(s, period);
+        }
         // Bollinger Bands
         if (field.equals("UPPER_BAND") || field.equals("LOWER_BAND") || field.equals("MIDDLE_BAND")) {
             int len = intP(p, "length", 20);

frontend/src/components/StrategyEditorPage.tsx

@@ -27,6 +27,7 @@ import {
   deleteStrategyFlowLayout,
   type SignalFlowLayoutSnapshot,
   type FlowLayoutChangePayload,
+  type StrategyFlowLayoutStore,
 } from '../utils/strategyEditorLayoutStorage';
 import LogicExpressionPreview from './strategyEditor/LogicExpressionPreview';
 import StrategyEditorCanvas, { type FlowLayoutSeed } from './strategyEditor/StrategyEditorCanvas';
@@ -42,6 +43,15 @@ import {
   simpleTemplateToNode,
   type StrategyTemplateDef,
 } from '../utils/strategyPresets';
+import {
+  buildStrategyExportPayload,
+  buildStrategyListExportPayload,
+  downloadStrategyJson,
+  listImportItemToStrategyDto,
+  parseStrategyImportFile,
+  pickJsonFile,
+  strategyDtoToListExportItem,
+} from '../utils/strategyImportExport';
 import PaletteChip from './strategyEditor/PaletteChip';
 import { readStoredSize, storeSize, usePanelResize } from './strategyEditor/usePanelResize';
 import '../styles/strategyEditor.css';
@@ -393,6 +403,113 @@ export default function StrategyEditorPage({ theme, activeIndicators = [] }: Pro
     showSnack('전략이 삭제되었습니다');
   };
 
+  const applyImportedFlowLayout = useCallback((layout: StrategyFlowLayoutStore | undefined, tab: 'buy' | 'sell' = signalTab) => {
+    if (layout) {
+      setBuyLayout({
+        positions: layout.buy.positions ?? {},
+        edgeHandles: layout.buy.edgeHandles ?? {},
+      });
+      setSellLayout({
+        positions: layout.sell.positions ?? {},
+        edgeHandles: layout.sell.edgeHandles ?? {},
+      });
+      setBuyOrphans(layout.buy.orphans ?? []);
+      setSellOrphans(layout.sell.orphans ?? []);
+      saveStrategyFlowLayout('draft', layout);
+    } else {
+      resetFlowLayout('draft', tab);
+    }
+    bumpLayoutSeed('draft', tab);
+  }, [resetFlowLayout, bumpLayoutSeed, signalTab]);
+
+  const handleExport = useCallback(() => {
+    if (!buyCondition && !sellCondition) {
+      showSnack('내보낼 조건이 없습니다', false);
+      return;
+    }
+    if (editorMode === 'graph') layoutFlushRef.current?.();
+    const payload = buildStrategyExportPayload({
+      name: stratName,
+      description: stratDesc,
+      buyCondition,
+      sellCondition,
+      flowLayout: {
+        buy: { ...buyLayoutRef.current, orphans: buyOrphans },
+        sell: { ...sellLayoutRef.current, orphans: sellOrphans },
+      },
+      editorMode,
+    });
+    const safeName = (stratName || '전략').replace(/[^\w\uAC00-\uD7A3-]+/g, '_');
+    downloadStrategyJson(`${safeName}_${new Date().toISOString().slice(0, 10)}`, payload);
+    showSnack('JSON으로 내보냈습니다');
+  }, [buyCondition, sellCondition, stratName, stratDesc, buyOrphans, sellOrphans, editorMode]);
+
+  const handleImport = useCallback(async () => {
+    const text = await pickJsonFile();
+    if (!text) return;
+    try {
+      const result = parseStrategyImportFile(text);
+      if (result.kind === 'list') {
+        showSnack('단일 전략 파일이 아닙니다. 전체 가져오기(⬆)를 사용하세요', false);
+        return;
+      }
+      if (editorMode === 'graph') layoutFlushRef.current?.();
+      const { data } = result;
+      setBuyCondition(data.buyCondition ?? null);
+      setSellCondition(data.sellCondition ?? null);
+      setStratName(data.name ?? '가져온 전략');
+      setStratDesc(data.description ?? '');
+      setSelectedId(null);
+      setSelectedNodeId(null);
+      applyImportedFlowLayout(data.flowLayout);
+      if (data.editorMode === 'list' || data.editorMode === 'graph') {
+        setEditorMode(data.editorMode);
+        saveEditorMode(data.editorMode);
+      }
+      showSnack('전략을 가져왔습니다');
+    } catch (e) {
+      showSnack(e instanceof Error ? e.message : '파일 읽기 실패', false);
+    }
+  }, [editorMode, applyImportedFlowLayout]);
+
+  const handleExportAll = useCallback(() => {
+    if (strategies.length === 0) {
+      showSnack('내보낼 전략이 없습니다', false);
+      return;
+    }
+    const items = strategies.map(s => strategyDtoToListExportItem(
+      s,
+      loadStrategyFlowLayout(String(s.id)),
+    ));
+    downloadStrategyJson(
+      `전략목록_${new Date().toISOString().slice(0, 10)}`,
+      buildStrategyListExportPayload(items),
+    );
+    showSnack(`${strategies.length}개 전략을 내보냈습니다`);
+  }, [strategies]);
+
+  const handleImportAll = useCallback(async () => {
+    const text = await pickJsonFile();
+    if (!text) return;
+    try {
+      const result = parseStrategyImportFile(text);
+      if (result.kind !== 'list') {
+        showSnack('전략 목록 형식 파일이 필요합니다', false);
+        return;
+      }
+      const baseId = Date.now();
+      const imported = result.data.strategies.map((item, index) => {
+        const id = baseId + index;
+        if (item.flowLayout) saveStrategyFlowLayout(String(id), item.flowLayout);
+        return listImportItemToStrategyDto(item, id);
+      });
+      setStrategies(prev => [...prev, ...imported]);
+      showSnack(`${imported.length}개 전략을 가져왔습니다`);
+    } catch (e) {
+      showSnack(e instanceof Error ? e.message : '파일 읽기 실패', false);
+    }
+  }, []);
+
   const applyPalette = useCallback((type: string, value: string, label: string) => {
     const newNode = makeNode(type, value, signalTab, DEF);
     const root = currentRoot;
@@ -404,21 +521,23 @@ export default function StrategyEditorPage({ theme, activeIndicators = [] }: Pro
   const templates = useMemo(() => getStrategyTemplates(DEF), [DEF]);
 
   const handleTemplate = useCallback((tmpl: StrategyTemplateDef) => {
-    if (tmpl.signal !== signalTab) switchSignalTab(tmpl.signal);
+    if (editorMode === 'graph') layoutFlushRef.current?.();
-    const setRoot = tmpl.signal === 'buy' ? setBuyCondition : setSellCondition;
-    const root = tmpl.signal === 'buy' ? buyCondition : sellCondition;
 
-    if (tmpl.kind === 'composite') {
+    const targetTab = tmpl.signal;
-      setRoot(tmpl.build());
+    const nextRoot = tmpl.kind === 'composite' ? tmpl.build() : simpleTemplateToNode(tmpl);
-      showSnack(`"${tmpl.label}" 템플릿이 적용됐습니다`);
-      return;
-    }
 
-    const newNode = simpleTemplateToNode(tmpl);
+    setBuyCondition(null);
-    if (!root) setRoot(newNode);
+    setSellCondition(null);
-    else setRoot(mergeAtRoot(root, newNode, false));
+    setSelectedNodeId(null);
-    showSnack(`"${tmpl.label}" 추가됨`);
+
-  }, [signalTab, switchSignalTab, buyCondition, sellCondition, setBuyCondition, setSellCondition]);
+    if (targetTab === 'buy') setBuyCondition(nextRoot);
+    else setSellCondition(nextRoot);
+
+    resetFlowLayout(layoutStrategyKey, targetTab);
+    if (targetTab !== signalTab) setSignalTab(targetTab);
+
+    showSnack(`"${tmpl.label}" 템플릿이 적용됐습니다`);
+  }, [editorMode, layoutStrategyKey, resetFlowLayout, signalTab]);
 
   const operators = [
     { type: 'operator' as const, value: 'AND', label: 'AND', color: 'logic-and' },
@@ -430,6 +549,7 @@ export default function StrategyEditorPage({ theme, activeIndicators = [] }: Pro
     { type: 'indicator' as const, value: 'MA', label: 'MA', desc: '이동평균', color: 'band' },
     { type: 'indicator' as const, value: 'EMA', label: 'EMA', desc: '지수이동평균', color: 'band' },
     { type: 'indicator' as const, value: 'BOLLINGER', label: 'Bollinger', desc: '볼린저밴드', color: 'band' },
+    { type: 'indicator' as const, value: 'DONCHIAN', label: 'Donchian', desc: '돈치안 채널', color: 'band' },
     { type: 'indicator' as const, value: 'ICHIMOKU', label: 'Ichimoku', desc: '일목균형표', color: 'band' },
   ];
 
@@ -484,6 +604,40 @@ export default function StrategyEditorPage({ theme, activeIndicators = [] }: Pro
             </button>
           </div>
           <button type="button" className="se-btn se-btn--ghost" onClick={handleNew}>＋ 새 전략</button>
+          <button
+            type="button"
+            className="se-btn se-btn--ghost se-btn--icon"
+            title="현재 전략 JSON 내보내기"
+            onClick={handleExport}
+            disabled={!buyCondition && !sellCondition}
+          >
+            ↓
+          </button>
+          <button
+            type="button"
+            className="se-btn se-btn--ghost se-btn--icon"
+            title="JSON 파일에서 전략 가져오기"
+            onClick={() => { void handleImport(); }}
+          >
+            ↑
+          </button>
+          <button
+            type="button"
+            className="se-btn se-btn--ghost se-btn--icon"
+            title="전체 전략 목록 JSON 내보내기"
+            onClick={handleExportAll}
+            disabled={strategies.length === 0}
+          >
+            ⬇
+          </button>
+          <button
+            type="button"
+            className="se-btn se-btn--ghost se-btn--icon"
+            title="전체 전략 목록 JSON 가져오기"
+            onClick={() => { void handleImportAll(); }}
+          >
+            ⬆
+          </button>
           <button type="button" className="se-btn se-btn--gold" onClick={() => setSaveOpen(true)}>저장하기</button>
         </div>
       </header>

frontend/src/components/StrategyPage.tsx

@@ -459,6 +459,18 @@ const getFieldOpts = (ind: string, signalType: 'buy'|'sell', DEF: DefType): Opt[
       { value:'HIGH_PRICE',  label:'고가' },
       { value:'LOW_PRICE',   label:'저가' },
     ]);
+    case 'DONCHIAN': return condOpts([
+      { value:'DC_UPPER_10',  label:'상단(10일 최고가)' },
+      { value:'DC_UPPER_20',  label:'상단(20일 최고가)' },
+      { value:'DC_UPPER_55',  label:'상단(55일 최고가)' },
+      { value:'DC_MIDDLE_20', label:'중심(20일)' },
+      { value:'DC_LOWER_10',  label:'하단(10일 최저가)' },
+      { value:'DC_LOWER_20',  label:'하단(20일 최저가)' },
+      { value:'DC_LOWER_55',  label:'하단(55일 최저가)' },
+      { value:'CLOSE_PRICE',  label:'종가' },
+      { value:'LOW_PRICE',    label:'저가' },
+      { value:'HIGH_PRICE',   label:'고가' },
+    ]);
     case 'ICHIMOKU': return condOpts([
       { value:'CONVERSION_LINE', label:`전환선(${DEF.ichTenkan}일)` },
       { value:'BASE_LINE',       label:`기준선(${DEF.ichKijun}일)` },
@@ -475,7 +487,6 @@ const getFieldOpts = (ind: string, signalType: 'buy'|'sell', DEF: DefType): Opt[
 };
 
 const getDefaultFields = (ind: string, signalType: 'buy'|'sell', DEF: DefType): { l: string; r: string } => {
-  void signalType;
   // 저장된 hline 과열선 값 우선 사용
   const over  = (def: number) => kv(DEF.hlThresh[ind]?.over  ?? def);
   const mid   = (def: number) => kv(DEF.hlThresh[ind]?.mid   ?? def);
@@ -502,6 +513,9 @@ const getDefaultFields = (ind: string, signalType: 'buy'|'sell', DEF: DefType):
     VOLUME_OSC:      { l:'VOLUME_OSC_VALUE',  r: mid(0)           },
     MACD:            { l:'MACD_LINE',         r:'SIGNAL_LINE'     },
     BOLLINGER:       { l:'CLOSE_PRICE',       r:'UPPER_BAND'      },
+    DONCHIAN:        signalType === 'buy'
+      ? { l:'CLOSE_PRICE', r:'DC_UPPER_20' }
+      : { l:'CLOSE_PRICE', r:'DC_LOWER_20' },
     ICHIMOKU:        { l:'CONVERSION_LINE',   r:'BASE_LINE'       },
   };
   return map[ind] ?? { l:'NONE', r:'NONE' };
@@ -1218,6 +1232,7 @@ export const StrategyPage: React.FC<Props> = ({ activeIndicators = [] }) => {
     { type:'indicator' as const, value:'MA',       label:'MA (이동평균)',    color:'primary' },
     { type:'indicator' as const, value:'EMA',      label:'EMA (지수이동평균)', color:'primary' },
     { type:'indicator' as const, value:'BOLLINGER',label:'볼린저밴드',      color:'primary' },
+    { type:'indicator' as const, value:'DONCHIAN', label:'돈치안 채널',     color:'primary' },
     { type:'indicator' as const, value:'ICHIMOKU', label:'일목균형표',      color:'primary' },
   ];
   const indicatorItems = [

frontend/src/components/strategyEditor/paletteCategories.ts

@@ -1,6 +1,6 @@
 /** 팔레트·Logic Expression 공통 — 지표 카테고리 */
 
-export const BAND_INDICATORS = new Set(['MA', 'EMA', 'BOLLINGER', 'ICHIMOKU']);
+export const BAND_INDICATORS = new Set(['MA', 'EMA', 'BOLLINGER', 'DONCHIAN', 'ICHIMOKU']);
 
 export type PaletteIndicatorCategory = 'band' | 'ind';
 

frontend/src/styles/strategyEditor.css

@@ -112,6 +112,16 @@
 }
 .se-btn:hover { border-color: color-mix(in srgb, var(--se-accent) 50%, transparent); }
 .se-btn--ghost { background: transparent; }
+.se-btn--icon {
+  min-width: 34px;
+  padding: 7px 10px;
+  font-size: 0.9rem;
+  line-height: 1;
+}
+.se-btn--icon:disabled {
+  opacity: 0.35;
+  cursor: not-allowed;
+}
 .se-btn--gold {
   background: var(--se-btn-gold-bg);
   border-color: var(--se-btn-gold-border);

frontend/src/utils/strategyEditorShared.tsx

@@ -140,6 +140,7 @@ export function buildDef(activeIndicators: IndicatorConfig[]): DefType {
     INVEST_PSYCHOLOGICAL: 'InvestPsychological',
     OBV:                  'OBV',
     BOLLINGER:            'BollingerBands',
+    DONCHIAN:             'DonchianChannels',
   };
 
   const extractThresh = (dslType: string): HLThresh => {
@@ -417,6 +418,18 @@ export const getFieldOpts = (ind: string, signalType: 'buy'|'sell', DEF: DefType
       { value:'HIGH_PRICE',  label:'고가' },
       { value:'LOW_PRICE',   label:'저가' },
     ]);
+    case 'DONCHIAN': return condOpts([
+      { value:'DC_UPPER_10',  label:'상단(10일 최고가)' },
+      { value:'DC_UPPER_20',  label:'상단(20일 최고가)' },
+      { value:'DC_UPPER_55',  label:'상단(55일 최고가)' },
+      { value:'DC_MIDDLE_20', label:'중심(20일)' },
+      { value:'DC_LOWER_10',  label:'하단(10일 최저가)' },
+      { value:'DC_LOWER_20',  label:'하단(20일 최저가)' },
+      { value:'DC_LOWER_55',  label:'하단(55일 최저가)' },
+      { value:'CLOSE_PRICE',  label:'종가' },
+      { value:'LOW_PRICE',    label:'저가' },
+      { value:'HIGH_PRICE',   label:'고가' },
+    ]);
     case 'ICHIMOKU': return condOpts([
       { value:'CONVERSION_LINE', label:`전환선(${DEF.ichTenkan}일)` },
       { value:'BASE_LINE',       label:`기준선(${DEF.ichKijun}일)` },
@@ -433,7 +446,6 @@ export const getFieldOpts = (ind: string, signalType: 'buy'|'sell', DEF: DefType
 };
 
 const getDefaultFields = (ind: string, signalType: 'buy'|'sell', DEF: DefType): { l: string; r: string } => {
-  void signalType;
   // 저장된 hline 과열선 값 우선 사용
   const over  = (def: number) => kv(DEF.hlThresh[ind]?.over  ?? def);
   const mid   = (def: number) => kv(DEF.hlThresh[ind]?.mid   ?? def);
@@ -460,6 +472,9 @@ const getDefaultFields = (ind: string, signalType: 'buy'|'sell', DEF: DefType):
     VOLUME_OSC:      { l:'VOLUME_OSC_VALUE',  r: mid(0)           },
     MACD:            { l:'MACD_LINE',         r:'SIGNAL_LINE'     },
     BOLLINGER:       { l:'CLOSE_PRICE',       r:'UPPER_BAND'      },
+    DONCHIAN:        signalType === 'buy'
+      ? { l:'CLOSE_PRICE', r:'DC_UPPER_20' }
+      : { l:'CLOSE_PRICE', r:'DC_LOWER_20' },
     ICHIMOKU:        { l:'CONVERSION_LINE',   r:'BASE_LINE'       },
   };
   return map[ind] ?? { l:'NONE', r:'NONE' };

frontend/src/utils/strategyImportExport.ts

@@ -0,0 +1,196 @@
+import type { LogicNode } from './strategyTypes';
+import type { StrategyFlowLayoutStore } from './strategyEditorLayoutStorage';
+import type { StrategyEditorMode } from './strategyEditorModeStorage';
+import type { StrategyDto } from './strategyEditorShared';
+
+export const STRATEGY_EXPORT_VERSION = '1.1';
+
+export interface StrategyExportPayload {
+  version: string;
+  name?: string;
+  description?: string;
+  buyCondition?: LogicNode | null;
+  sellCondition?: LogicNode | null;
+  exportedAt: string;
+  source?: 'strategy-builder' | 'strategy-page';
+  flowLayout?: StrategyFlowLayoutStore;
+  editorMode?: StrategyEditorMode;
+}
+
+export interface StrategyListExportItem {
+  name: string;
+  description?: string;
+  buyCondition?: LogicNode | null;
+  sellCondition?: LogicNode | null;
+  enabled?: boolean;
+  flowLayout?: StrategyFlowLayoutStore;
+}
+
+export interface StrategyListExportPayload {
+  version: string;
+  exportedAt: string;
+  totalCount: number;
+  source?: 'strategy-builder' | 'strategy-page';
+  strategies: StrategyListExportItem[];
+}
+
+export type StrategyImportResult =
+  | { kind: 'single'; data: StrategyExportPayload }
+  | { kind: 'list'; data: StrategyListExportPayload };
+
+function isLogicNode(value: unknown): value is LogicNode {
+  return !!value && typeof value === 'object' && typeof (value as LogicNode).type === 'string';
+}
+
+function hasStrategyConditions(data: Record<string, unknown>): boolean {
+  return isLogicNode(data.buyCondition) || isLogicNode(data.sellCondition);
+}
+
+export function buildStrategyExportPayload(input: {
+  name?: string;
+  description?: string;
+  buyCondition?: LogicNode | null;
+  sellCondition?: LogicNode | null;
+  flowLayout?: StrategyFlowLayoutStore;
+  editorMode?: StrategyEditorMode;
+}): StrategyExportPayload {
+  return {
+    version: STRATEGY_EXPORT_VERSION,
+    source: 'strategy-builder',
+    name: input.name,
+    description: input.description,
+    buyCondition: input.buyCondition ?? null,
+    sellCondition: input.sellCondition ?? null,
+    flowLayout: input.flowLayout,
+    editorMode: input.editorMode,
+    exportedAt: new Date().toISOString(),
+  };
+}
+
+export function buildStrategyListExportPayload(
+  strategies: StrategyListExportItem[],
+): StrategyListExportPayload {
+  return {
+    version: STRATEGY_EXPORT_VERSION,
+    source: 'strategy-builder',
+    exportedAt: new Date().toISOString(),
+    totalCount: strategies.length,
+    strategies,
+  };
+}
+
+export function parseStrategyImportFile(text: string): StrategyImportResult {
+  let parsed: unknown;
+  try {
+    parsed = JSON.parse(text);
+  } catch {
+    throw new Error('JSON 파싱에 실패했습니다');
+  }
+  if (!parsed || typeof parsed !== 'object') {
+    throw new Error('유효하지 않은 JSON 형식입니다');
+  }
+  const data = parsed as Record<string, unknown>;
+
+  if (Array.isArray(data.strategies)) {
+    const strategies = data.strategies.filter((item): item is StrategyListExportItem => {
+      if (!item || typeof item !== 'object') return false;
+      const row = item as StrategyListExportItem;
+      return !!row.name && (isLogicNode(row.buyCondition) || isLogicNode(row.sellCondition));
+    });
+    if (strategies.length === 0) {
+      throw new Error('가져올 전략 조건이 없습니다');
+    }
+    return {
+      kind: 'list',
+      data: {
+        version: String(data.version ?? STRATEGY_EXPORT_VERSION),
+        exportedAt: String(data.exportedAt ?? new Date().toISOString()),
+        totalCount: strategies.length,
+        source: data.source === 'strategy-page' ? 'strategy-page' : 'strategy-builder',
+        strategies,
+      },
+    };
+  }
+
+  if (!hasStrategyConditions(data)) {
+    throw new Error('buyCondition 또는 sellCondition이 필요합니다');
+  }
+
+  return {
+    kind: 'single',
+    data: {
+      version: String(data.version ?? '1.0'),
+      source: data.source === 'strategy-page' ? 'strategy-page' : 'strategy-builder',
+      name: typeof data.name === 'string' ? data.name : undefined,
+      description: typeof data.description === 'string' ? data.description : undefined,
+      buyCondition: isLogicNode(data.buyCondition) ? data.buyCondition : null,
+      sellCondition: isLogicNode(data.sellCondition) ? data.sellCondition : null,
+      flowLayout: data.flowLayout as StrategyFlowLayoutStore | undefined,
+      editorMode: data.editorMode === 'list' || data.editorMode === 'graph'
+        ? data.editorMode
+        : undefined,
+      exportedAt: String(data.exportedAt ?? new Date().toISOString()),
+    },
+  };
+}
+
+export function downloadStrategyJson(filename: string, data: unknown): void {
+  const blob = new Blob([JSON.stringify(data, null, 2)], { type: 'application/json' });
+  const href = URL.createObjectURL(blob);
+  const anchor = document.createElement('a');
+  anchor.href = href;
+  anchor.download = filename.endsWith('.json') ? filename : `${filename}.json`;
+  document.body.appendChild(anchor);
+  anchor.click();
+  document.body.removeChild(anchor);
+  URL.revokeObjectURL(href);
+}
+
+export function pickJsonFile(): Promise<string | null> {
+  return new Promise(resolve => {
+    const input = document.createElement('input');
+    input.type = 'file';
+    input.accept = '.json,application/json';
+    input.onchange = async () => {
+      const file = input.files?.[0];
+      if (!file) {
+        resolve(null);
+        return;
+      }
+      try {
+        resolve(await file.text());
+      } catch {
+        resolve(null);
+      }
+    };
+    input.click();
+  });
+}
+
+export function strategyDtoToListExportItem(
+  strategy: StrategyDto,
+  flowLayout?: StrategyFlowLayoutStore | null,
+): StrategyListExportItem {
+  return {
+    name: strategy.name,
+    description: strategy.description,
+    buyCondition: strategy.buyCondition ?? null,
+    sellCondition: strategy.sellCondition ?? null,
+    enabled: strategy.enabled,
+    flowLayout: flowLayout ?? undefined,
+  };
+}
+
+export function listImportItemToStrategyDto(item: StrategyListExportItem, id: number): StrategyDto {
+  const now = new Date().toISOString();
+  return {
+    id,
+    name: item.name,
+    description: item.description,
+    buyCondition: item.buyCondition ?? null,
+    sellCondition: item.sellCondition ?? null,
+    enabled: item.enabled ?? true,
+    createdAt: now,
+    updatedAt: now,
+  };
+}

frontend/src/utils/strategyPresets.ts

@@ -40,6 +40,26 @@ function andTree(...children: LogicNode[]): LogicNode {
   return { id: genId(), type: 'AND', children };
 }
 
+/** 돈천 채널 — N일 최고가 상향 돌파 */
+function donchianBreakoutBuy(period: number): LogicNode {
+  return condition('DONCHIAN', 'CROSS_UP', 'CLOSE_PRICE', `DC_UPPER_${period}`);
+}
+
+/** 돈천 채널 — N일 최저가 하향 이탈 */
+function donchianBreakdownSell(period: number): LogicNode {
+  return condition('DONCHIAN', 'CROSS_DOWN', 'CLOSE_PRICE', `DC_LOWER_${period}`);
+}
+
+/** 일목균형표 — 전환선(9일) / 기준선(26일) 골든·데드크로스 */
+function ichimokuTenkanKijunCross(signal: 'buy' | 'sell'): LogicNode {
+  return condition(
+    'ICHIMOKU',
+    signal === 'buy' ? 'CROSS_UP' : 'CROSS_DOWN',
+    'CONVERSION_LINE',
+    'BASE_LINE',
+  );
+}
+
 /** 33변곡 매수 — 바닥권 시간변곡(약 33거래일 주기) 전환 구간 */
 export function build33InflectionBuyTree(): LogicNode {
   return andTree(
@@ -93,6 +113,62 @@ export function getStrategyTemplates(def: DefType): StrategyTemplateDef[] {
       description: '상승 5파 끝 변곡 — RSI 과매수 + MA 데드크로스 + 20일선·이격도 이탈',
       build: build33InflectionSellTree,
     },
+    {
+      kind: 'composite',
+      signal: 'buy',
+      label: '돈천 채널(20일) 매수',
+      description: '종가가 직전 20거래일 최고가(상단선)를 상향 돌파 — 한 달 박스권 돌파',
+      build: () => donchianBreakoutBuy(20),
+    },
+    {
+      kind: 'composite',
+      signal: 'sell',
+      label: '돈천 채널(20일) 매도',
+      description: '종가가 직전 20거래일 최저가(하단선)를 하향 이탈 — 추세 이탈 청산',
+      build: () => donchianBreakdownSell(20),
+    },
+    {
+      kind: 'composite',
+      signal: 'buy',
+      label: '터틀 S1 매수',
+      description: '단기 시스템 — 20일 최고가 돌파 진입 (리처드 데니스 터틀 트레이딩)',
+      build: () => donchianBreakoutBuy(20),
+    },
+    {
+      kind: 'composite',
+      signal: 'sell',
+      label: '터틀 S1 청산',
+      description: '단기 시스템 — 10일 최저가 이탈 시 즉시 청산 (진입보다 짧은 손절)',
+      build: () => donchianBreakdownSell(10),
+    },
+    {
+      kind: 'composite',
+      signal: 'buy',
+      label: '터틀 S2 매수',
+      description: '장기 시스템 — 55일 최고가 돌파 진입 (큰 추세 포착)',
+      build: () => donchianBreakoutBuy(55),
+    },
+    {
+      kind: 'composite',
+      signal: 'sell',
+      label: '터틀 S2 청산',
+      description: '장기 시스템 — 20일 최저가 이탈 시 청산 (S1보다 여유, S2보다 빠른 탈출)',
+      build: () => donchianBreakdownSell(20),
+    },
+    {
+      kind: 'composite',
+      signal: 'buy',
+      label: '일목 전환/기준선 매수',
+      description: '전환선(9일 중간값)이 기준선(26일 중간값)을 상향 돌파 — 골든크로스',
+      build: () => ichimokuTenkanKijunCross('buy'),
+    },
+    {
+      kind: 'composite',
+      signal: 'sell',
+      label: '일목 전환/기준선 매도',
+      description: '전환선(9일)이 기준선(26일)을 하향 이탈 — 데드크로스',
+      build: () => ichimokuTenkanKijunCross('sell'),
+    },
   ];
 }
 

frontend/src/utils/strategyTypes.ts

@@ -62,6 +62,7 @@ export const INDICATOR_CONDITIONS: Record<string, string[]> = {
   VOLUME: COMMON_CONDITIONS,
   MA: COMMON_CONDITIONS, EMA: COMMON_CONDITIONS,
   BOLLINGER: COMMON_CONDITIONS,
+  DONCHIAN: COMMON_CONDITIONS,
   ICHIMOKU: [
     ...COMMON_CONDITIONS,
     'ABOVE_CLOUD', 'BELOW_CLOUD', 'IN_CLOUD', 'CLOUD_BREAK_UP', 'CLOUD_BREAK_DOWN',
@@ -108,6 +109,11 @@ export const LEFT_FIELD_OPTIONS: Record<string, FieldOption[]> = {
     { value: 'UPPER', label: '상단밴드' }, { value: 'MIDDLE', label: '중단밴드' },
     { value: 'LOWER', label: '하단밴드' },
   ],
+  DONCHIAN: [
+    { value: 'CLOSE_PRICE', label: '종가' },
+    { value: 'LOW_PRICE', label: '저가' },
+    { value: 'HIGH_PRICE', label: '고가' },
+  ],
   ICHIMOKU: [
     { value: 'CLOSE_PRICE', label: '종가' },
     { value: 'CONVERSION_LINE', label: '전환선' }, { value: 'BASE_LINE', label: '기준선' },
@@ -178,6 +184,16 @@ export const RIGHT_FIELD_OPTIONS: Record<string, FieldOption[]> = {
     { value: 'UPPER', label: '상단밴드' }, { value: 'MIDDLE', label: '중단밴드' },
     { value: 'LOWER', label: '하단밴드' }, { value: 'CUSTOM', label: '직접 입력' },
   ],
+  DONCHIAN: [
+    { value: 'DC_UPPER_10', label: '상단(10일 최고가)' },
+    { value: 'DC_UPPER_20', label: '상단(20일 최고가)' },
+    { value: 'DC_UPPER_55', label: '상단(55일 최고가)' },
+    { value: 'DC_MIDDLE_20', label: '중심(20일)' },
+    { value: 'DC_LOWER_10', label: '하단(10일 최저가)' },
+    { value: 'DC_LOWER_20', label: '하단(20일 최저가)' },
+    { value: 'DC_LOWER_55', label: '하단(55일 최저가)' },
+    { value: 'CUSTOM', label: '직접 입력' },
+  ],
   ICHIMOKU: [
     { value: 'CONVERSION_LINE', label: '전환선' }, { value: 'BASE_LINE', label: '기준선' },
     { value: 'LEADING_SPAN1', label: '선행1' },    { value: 'LEADING_SPAN2', label: '선행2' },
@@ -207,6 +223,7 @@ export const MA_BAND_ITEMS: PaletteItem[] = [
   { id: 'ind-ma',       type: 'indicator', label: 'MA (이동평균)',    value: 'MA',       color: 'primary' },
   { id: 'ind-ema',      type: 'indicator', label: 'EMA (지수이동평균)', value: 'EMA',    color: 'primary' },
   { id: 'ind-bollinger',type: 'indicator', label: '볼린저밴드',        value: 'BOLLINGER', color: 'primary' },
+  { id: 'ind-donchian', type: 'indicator', label: '돈치안 채널',       value: 'DONCHIAN',  color: 'primary' },
   { id: 'ind-ichimoku', type: 'indicator', label: '일목균형표',        value: 'ICHIMOKU',  color: 'primary' },
 ];