알림삭제 기능 추가

backend/src/main/java/com/goldenchart/controller/TradeSignalController.java

@@ -14,6 +14,9 @@ import java.util.List;
  * <pre>
  * GET    /api/trade-signals              → 전체 이력
  * GET    /api/trade-signals?market=      → 종목별 이력
+ * DELETE /api/trade-signals/{id}         → 단건 삭제
+ * DELETE /api/trade-signals              → 전체 삭제
+ * POST   /api/trade-signals/delete-batch → ID 목록 삭제
  * </pre>
  */
 @RestController
@@ -36,6 +39,32 @@ public class TradeSignalController {
         return ResponseEntity.ok(result);
     }
 
+    @DeleteMapping("/{id}")
+    public ResponseEntity<Void> deleteOne(
+            @PathVariable Long id,
+            @RequestHeader(value = "X-User-Id",   required = false) String userIdHeader,
+            @RequestHeader(value = "X-Device-Id", required = false) String deviceId) {
+        service.deleteOne(id, parseUserId(userIdHeader), deviceId);
+        return ResponseEntity.noContent().build();
+    }
+
+    @DeleteMapping
+    public ResponseEntity<java.util.Map<String, Integer>> deleteAll(
+            @RequestHeader(value = "X-User-Id",   required = false) String userIdHeader,
+            @RequestHeader(value = "X-Device-Id", required = false) String deviceId) {
+        int deleted = service.deleteAll(parseUserId(userIdHeader), deviceId);
+        return ResponseEntity.ok(java.util.Map.of("deleted", deleted));
+    }
+
+    @PostMapping("/delete-batch")
+    public ResponseEntity<java.util.Map<String, Integer>> deleteBatch(
+            @RequestBody java.util.List<Long> ids,
+            @RequestHeader(value = "X-User-Id",   required = false) String userIdHeader,
+            @RequestHeader(value = "X-Device-Id", required = false) String deviceId) {
+        int deleted = service.deleteBatch(ids, parseUserId(userIdHeader), deviceId);
+        return ResponseEntity.ok(java.util.Map.of("deleted", deleted));
+    }
+
     private Long parseUserId(String h) {
         if (h == null || h.isBlank()) return null;
         try { return Long.parseLong(h); } catch (NumberFormatException e) { return null; }

backend/src/main/java/com/goldenchart/repository/GcTradeSignalRepository.java

@@ -2,6 +2,9 @@ package com.goldenchart.repository;
 
 import com.goldenchart.entity.GcTradeSignal;
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
 
 import java.util.List;
 
@@ -10,4 +13,13 @@ public interface GcTradeSignalRepository extends JpaRepository<GcTradeSignal, Lo
     List<GcTradeSignal> findByDeviceIdOrderByCreatedAtDesc(String deviceId);
     List<GcTradeSignal> findByUserIdOrderByCreatedAtDesc(Long userId);
     List<GcTradeSignal> findByDeviceIdAndMarketOrderByCreatedAtDesc(String deviceId, String market);
+
+    @Modifying
+    @Query("DELETE FROM GcTradeSignal e WHERE e.userId = :userId")
+    void deleteByUserId(@Param("userId") Long userId);
+
+    @Modifying
+    @Query("DELETE FROM GcTradeSignal e WHERE e.deviceId = :deviceId AND (e.userId IS NULL OR e.userId = 0)")
+    void deleteByDeviceId(@Param("deviceId") String deviceId);
+
 }

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

@@ -69,6 +69,52 @@ public class TradeSignalService {
                 .stream().map(this::toDto).toList();
     }
 
+    // ── 삭제 ─────────────────────────────────────────────────────────────────
+
+    public void deleteOne(Long id, Long userId, String deviceId) {
+        if (id == null) return;
+        repo.findById(id).ifPresent(entity -> {
+            if (!owns(entity, userId, deviceId)) return;
+            repo.delete(entity);
+            log.info("[TradeSignal] deleted id={} market={}", id, entity.getMarket());
+        });
+    }
+
+    public int deleteBatch(List<Long> ids, Long userId, String deviceId) {
+        if (ids == null || ids.isEmpty()) return 0;
+        List<GcTradeSignal> toDelete = ids.stream()
+                .distinct()
+                .map(repo::findById)
+                .filter(java.util.Optional::isPresent)
+                .map(java.util.Optional::get)
+                .filter(e -> owns(e, userId, deviceId))
+                .toList();
+        if (toDelete.isEmpty()) return 0;
+        repo.deleteAll(toDelete);
+        log.info("[TradeSignal] batch deleted count={}", toDelete.size());
+        return toDelete.size();
+    }
+
+    public int deleteAll(Long userId, String deviceId) {
+        if (userId != null) {
+            long count = repo.findByUserIdOrderByCreatedAtDesc(userId).size();
+            repo.deleteByUserId(userId);
+            log.info("[TradeSignal] deleted all for userId={} count≈{}", userId, count);
+            return (int) count;
+        }
+        String dev = deviceId != null ? deviceId : "";
+        long count = repo.findByDeviceIdOrderByCreatedAtDesc(dev).size();
+        repo.deleteByDeviceId(dev);
+        log.info("[TradeSignal] deleted all for deviceId={} count≈{}", dev, count);
+        return (int) count;
+    }
+
+    private static boolean owns(GcTradeSignal entity, Long userId, String deviceId) {
+        if (userId != null && userId.equals(entity.getUserId())) return true;
+        if (deviceId == null || deviceId.isBlank()) return false;
+        return deviceId.equals(entity.getDeviceId());
+    }
+
     // ── 변환 ─────────────────────────────────────────────────────────────────
 
     private TradeSignalDto toDto(GcTradeSignal e) {

frontend/src/App.css

@@ -11317,6 +11317,58 @@ html.theme-light .tam-disclaimer     { color: #90a4ae; }
 .tnl-title { font-size: 20px; font-weight: 700; margin: 0 0 6px; }
 .tnl-sub { font-size: 13px; color: var(--text3); margin: 0 0 14px; }
 .tnl-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
+.tnl-toolbar-divider {
+  width: 1px;
+  height: 22px;
+  background: var(--border);
+  flex-shrink: 0;
+}
+.tnl-icon-btn {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 32px;
+  height: 32px;
+  padding: 0;
+  border-radius: 6px;
+  border: 1px solid var(--border);
+  background: var(--bg3);
+  color: var(--text2);
+  cursor: pointer;
+}
+.tnl-icon-btn:hover:not(:disabled) {
+  background: var(--bg4);
+  color: var(--text);
+  border-color: var(--accent, #7aa2f7);
+}
+.tnl-icon-btn:disabled {
+  opacity: 0.35;
+  cursor: not-allowed;
+}
+.tnl-icon-btn--danger:hover:not(:disabled) {
+  color: #f7768e;
+  border-color: rgba(247, 118, 142, 0.55);
+}
+.tnl-row-icon-btn {
+  flex-shrink: 0;
+  align-self: center;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 32px;
+  height: 32px;
+  margin-right: 2px;
+  padding: 0;
+  border: none;
+  border-radius: 6px;
+  background: transparent;
+  color: var(--text3);
+  cursor: pointer;
+}
+.tnl-row-icon-btn:hover {
+  background: rgba(247, 118, 142, 0.12);
+  color: #f7768e;
+}
 .tnl-chip {
   font-size: 12px;
   padding: 4px 10px;

frontend/src/components/TradeNotificationListPage.tsx

@@ -17,6 +17,15 @@ import '../styles/virtualTradingDashboard.css';
 
 type RightTab = 'trade' | 'orderbook';
 
+const IcTrash = () => (
+  <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" aria-hidden>
+    <polyline points="3 6 5 6 21 6" />
+    <path d="M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6m3 0V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2" />
+    <line x1="10" y1="11" x2="10" y2="17" />
+    <line x1="14" y1="11" x2="14" y2="17" />
+  </svg>
+);
+
 interface Props {
   theme: Theme;
   onGoToChart: (market: string) => void;
@@ -52,6 +61,9 @@ export const TradeNotificationListPage: React.FC<Props> = ({
     unreadCount,
     markAsRead,
     markAllAsRead,
+    deleteNotification,
+    deleteUnreadNotifications,
+    deleteAllNotifications,
     openDetail,
     refreshHistory,
   } = useTradeNotification();
@@ -127,6 +139,27 @@ export const TradeNotificationListPage: React.FC<Props> = ({
     setRightTab('trade');
   }, [markAsRead, handleSelectMarket]);
 
+  const handleDeleteOne = useCallback(async (item: TradeNotificationItem, e: React.MouseEvent) => {
+    e.stopPropagation();
+    if (!window.confirm('이 알림을 삭제하시겠습니까?')) return;
+    await deleteNotification(item.id);
+    if (selectedNotifyId === item.id) setSelectedNotifyId(null);
+  }, [deleteNotification, selectedNotifyId]);
+
+  const handleDeleteUnread = useCallback(async () => {
+    if (unreadCount === 0) return;
+    if (!window.confirm(`읽지 않은 알림 ${unreadCount}건을 삭제하시겠습니까?`)) return;
+    await deleteUnreadNotifications();
+    setSelectedNotifyId(null);
+  }, [unreadCount, deleteUnreadNotifications]);
+
+  const handleDeleteAll = useCallback(async () => {
+    if (allNotifications.length === 0) return;
+    if (!window.confirm(`알림 ${allNotifications.length}건을 모두 삭제하시겠습니까?`)) return;
+    await deleteAllNotifications();
+    setSelectedNotifyId(null);
+  }, [allNotifications.length, deleteAllNotifications]);
+
   const handleOrderbookRowClick = useCallback((price: number, rowType: 'ask' | 'bid') => {
     setRightTab('trade');
     const side = rowType === 'bid' ? 'buy' : 'sell';
@@ -174,6 +207,27 @@ export const TradeNotificationListPage: React.FC<Props> = ({
                   모두 읽음
                 </button>
               )}
+              <span className="tnl-toolbar-divider" aria-hidden="true" />
+              <button
+                type="button"
+                className="tnl-icon-btn"
+                title="미확인 알림 삭제"
+                aria-label="미확인 알림 삭제"
+                disabled={unreadCount === 0}
+                onClick={() => void handleDeleteUnread()}
+              >
+                <IcTrash />
+              </button>
+              <button
+                type="button"
+                className="tnl-icon-btn tnl-icon-btn--danger"
+                title="모두 삭제"
+                aria-label="모두 삭제"
+                disabled={allNotifications.length === 0}
+                onClick={() => void handleDeleteAll()}
+              >
+                <IcTrash />
+              </button>
             </div>
           </div>
 
@@ -213,6 +267,15 @@ export const TradeNotificationListPage: React.FC<Props> = ({
                         </span>
                         {!item.isRead && <span className="tnl-dot" aria-hidden />}
                       </button>
+                      <button
+                        type="button"
+                        className="tnl-row-icon-btn"
+                        title="삭제"
+                        aria-label="알림 삭제"
+                        onClick={e => void handleDeleteOne(item, e)}
+                      >
+                        <IcTrash />
+                      </button>
                       <button
                         type="button"
                         className="tnl-row-action"

frontend/src/contexts/TradeNotificationContext.tsx

@@ -14,7 +14,13 @@ import React, {
   useState,
 } from 'react';
 import type { TradeSignalInfo } from '../components/TradeAlertModal';
-import { loadTradeSignals, type TradeSignalDto } from '../utils/backendApi';
+import {
+  deleteAllTradeSignals,
+  deleteTradeSignal,
+  deleteTradeSignalsBatch,
+  loadTradeSignals,
+  type TradeSignalDto,
+} from '../utils/backendApi';
 import {
   normalizeTradeAlertSoundId,
   playTradeAlertSound,
@@ -22,6 +28,7 @@ import {
 } from '../utils/tradeAlertSound';
 
 const STORAGE_KEY = 'gc_trade_notify_read_v1';
+const HIDDEN_STORAGE_KEY = 'gc_trade_notify_hidden_v1';
 const MAX_HISTORY = 300;
 /** 팝업 대기열 최대 건수 (페이지 슬라이딩) */
 const MAX_TOAST_QUEUE = 50;
@@ -48,6 +55,12 @@ interface TradeNotificationContextValue {
   dismissAllToasts: () => void;
   markAsRead: (id: string) => void;
   markAllAsRead: () => void;
+  /** 알림 목록에서 단건 삭제 */
+  deleteNotification: (id: string) => Promise<void>;
+  /** 읽지 않은(미확인) 알림만 삭제 */
+  deleteUnreadNotifications: () => Promise<void>;
+  /** 알림 목록 전체 삭제 */
+  deleteAllNotifications: () => Promise<void>;
   refreshHistory: () => Promise<void>;
   detailSignal: TradeSignalInfo | null;
   /** 상세 모달을 화면 중앙에 표시 (알림 목록에서 열 때) */
@@ -96,6 +109,22 @@ function saveReadIds(ids: Set<string>) {
   } catch { /* ignore */ }
 }
 
+function loadHiddenIds(): Set<string> {
+  try {
+    const raw = localStorage.getItem(HIDDEN_STORAGE_KEY);
+    if (!raw) return new Set();
+    return new Set(JSON.parse(raw) as string[]);
+  } catch {
+    return new Set();
+  }
+}
+
+function saveHiddenIds(ids: Set<string>) {
+  try {
+    localStorage.setItem(HIDDEN_STORAGE_KEY, JSON.stringify([...ids]));
+  } catch { /* ignore */ }
+}
+
 export function useTradeNotification(): TradeNotificationContextValue {
   const ctx = useContext(TradeNotificationContext);
   if (!ctx) {
@@ -141,7 +170,10 @@ export const TradeNotificationProvider: React.FC<ProviderProps> = ({
       const dtos = await loadTradeSignals();
       /** dismiss 직후 비동기 완료 시 state readIds가 늦게 반영되는 것 방지 */
       const read = loadReadIds();
-      const items = dtos.map(d => dtoToItem(d, read));
+      const hidden = loadHiddenIds();
+      const items = dtos
+        .map(d => dtoToItem(d, read))
+        .filter(item => !hidden.has(item.id));
 
       let newlyArrived: TradeNotificationItem[] = [];
 
@@ -156,10 +188,12 @@ export const TradeNotificationProvider: React.FC<ProviderProps> = ({
           map.set(n.id, wasRead ? { ...n, isRead: true } : n);
         }
         for (const n of prev) {
+          if (hidden.has(n.id)) continue;
           if (!map.has(n.id)) map.set(n.id, n);
           else if (n.isRead) map.set(n.id, { ...map.get(n.id)!, isRead: true });
         }
         return [...map.values()]
+          .filter(n => !hidden.has(n.id))
           .sort((a, b) => b.receivedAt - a.receivedAt)
           .slice(0, MAX_HISTORY);
       });
@@ -312,6 +346,86 @@ export const TradeNotificationProvider: React.FC<ProviderProps> = ({
     setToastNotifications([]);
   }, []);
 
+  const purgeNotifications = useCallback((ids: string[]) => {
+    if (ids.length === 0) return;
+    const idSet = new Set(ids);
+    const hidden = loadHiddenIds();
+    ids.forEach(id => hidden.add(id));
+    saveHiddenIds(hidden);
+
+    setReadIds(prev => {
+      const next = new Set(prev);
+      ids.forEach(id => next.delete(id));
+      saveReadIds(next);
+      readIdsRef.current = next;
+      return next;
+    });
+    setToastNotifications(prev => prev.filter(n => !idSet.has(n.id)));
+    setAllNotifications(prev => prev.filter(n => !idSet.has(n.id)));
+    if (detailSignal) {
+      const detailId = makeId({
+        market: detailSignal.market,
+        candleTime: detailSignal.candleTime,
+        signalType: detailSignal.signalType,
+      });
+      if (idSet.has(detailId)) {
+        setDetailSignal(null);
+        setDetailCentered(false);
+      }
+    }
+  }, [detailSignal]);
+
+  const findNotificationById = useCallback((id: string): TradeNotificationItem | undefined => {
+    return allNotifications.find(n => n.id === id)
+      ?? toastNotificationsRef.current.find(n => n.id === id);
+  }, [allNotifications]);
+
+  const deleteNotification = useCallback(async (id: string) => {
+    const item = findNotificationById(id);
+    purgeNotifications([id]);
+    if (item?.dbId != null) {
+      try {
+        await deleteTradeSignal(item.dbId);
+      } catch (e) {
+        console.warn('[TradeNotification] 서버 삭제 실패:', e);
+      }
+    }
+  }, [findNotificationById, purgeNotifications]);
+
+  const deleteUnreadNotifications = useCallback(async () => {
+    const snapshot = [...allNotifications];
+    const unread = snapshot.filter(n => !n.isRead);
+    if (unread.length === 0) return;
+    const ids = unread.map(n => n.id);
+    const dbIds = unread.map(n => n.dbId).filter((x): x is number => x != null);
+    purgeNotifications(ids);
+    if (dbIds.length > 0) {
+      try {
+        await deleteTradeSignalsBatch(dbIds);
+      } catch (e) {
+        console.warn('[TradeNotification] 미확인 일괄 삭제 실패:', e);
+      }
+    }
+  }, [allNotifications, purgeNotifications]);
+
+  const deleteAllNotifications = useCallback(async () => {
+    const ids = [
+      ...new Set([
+        ...allNotifications.map(n => n.id),
+        ...toastNotificationsRef.current.map(n => n.id),
+      ]),
+    ];
+    purgeNotifications(ids);
+    setToastNotifications([]);
+    saveReadIds(new Set());
+    saveHiddenIds(new Set());
+    try {
+      await deleteAllTradeSignals();
+    } catch (e) {
+      console.warn('[TradeNotification] 전체 삭제 실패:', e);
+    }
+  }, [allNotifications, purgeNotifications]);
+
   const openDetail = useCallback((item: TradeNotificationItem, options?: { centered?: boolean }) => {
     setDetailCentered(options?.centered ?? false);
     setDetailSignal({
@@ -342,6 +456,9 @@ export const TradeNotificationProvider: React.FC<ProviderProps> = ({
     dismissAllToasts,
     markAsRead,
     markAllAsRead,
+    deleteNotification,
+    deleteUnreadNotifications,
+    deleteAllNotifications,
     refreshHistory,
     detailSignal,
     detailCentered,

frontend/src/utils/backendApi.ts

@@ -654,6 +654,27 @@ export async function loadTradeSignals(market?: string): Promise<TradeSignalDto[
   return (await request<TradeSignalDto[]>(`/trade-signals${q}`)) ?? [];
 }
 
+/** 매매 시그널 단건 삭제 */
+export async function deleteTradeSignal(id: number): Promise<void> {
+  await requestOrThrow<void>(`/trade-signals/${id}`, { method: 'DELETE' });
+}
+
+/** 매매 시그널 ID 목록 일괄 삭제 */
+export async function deleteTradeSignalsBatch(ids: number[]): Promise<number> {
+  if (ids.length === 0) return 0;
+  const res = await requestOrThrow<{ deleted?: number }>('/trade-signals/delete-batch', {
+    method: 'POST',
+    body: JSON.stringify(ids),
+  });
+  return res?.deleted ?? ids.length;
+}
+
+/** 매매 시그널 이력 전체 삭제 */
+export async function deleteAllTradeSignals(): Promise<number> {
+  const res = await requestOrThrow<{ deleted?: number }>('/trade-signals', { method: 'DELETE' });
+  return res?.deleted ?? 0;
+}
+
 /**
  * 앱 시작 시 기본 설정 로드.
  * DB 에 없으면 백엔드 엔티티 기본값(KRW-BTC / 1D / dark 등)을 반환.