feat(store): prevent deletion of active strategies and update translations (#1461)

Co-authored-by: Dean <afei.wuhao@gmail.com>

store/strategy.go

@@ -444,6 +444,9 @@ func (s *StrategyStore) Delete(userID, id string) error {
 		if st.IsDefault {
 			return fmt.Errorf("cannot delete system default strategy")
 		}
+		if st.IsActive {
+			return fmt.Errorf("cannot delete active strategy")
+		}
 	}
 
 	// Check if any trader references this strategy

web/src/i18n/translations.ts

@@ -1066,6 +1066,7 @@ export const translations = {
       newStrategyName: 'New Strategy',
       strategyCopy: 'Strategy Copy',
       strategyDeleted: 'Strategy deleted',
+      cannotDeleteActiveStrategy: 'Active strategy cannot be deleted',
       confirmDeleteStrategy: 'Delete this strategy?',
       confirmDelete: 'Confirm Delete',
       delete: 'Delete',
@@ -2373,6 +2374,7 @@ export const translations = {
       newStrategyName: '新策略',
       strategyCopy: '策略副本',
       strategyDeleted: '策略已删除',
+      cannotDeleteActiveStrategy: '激活中的策略不能删除',
       confirmDeleteStrategy: '确定删除此策略？',
       confirmDelete: '确认删除',
       delete: '删除',
@@ -3482,6 +3484,7 @@ export const translations = {
       newStrategyName: 'Strategi Baru',
       strategyCopy: 'Salinan Strategi',
       strategyDeleted: 'Strategi dihapus',
+      cannotDeleteActiveStrategy: 'Strategi aktif tidak bisa dihapus',
       confirmDeleteStrategy: 'Hapus strategi ini?',
       confirmDelete: 'Konfirmasi Hapus',
       delete: 'Hapus',

web/src/pages/StrategyStudioPage.tsx

@@ -30,7 +30,7 @@ import {
   Upload,
   Globe,
 } from 'lucide-react'
-import type { Strategy, StrategyConfig, AIModel } from '../types'
+import type { Strategy, StrategyConfig, AIModel, GridStrategyConfig } from '../types'
 import { confirmToast, notify } from '../lib/notify'
 import { CoinSourceEditor } from '../components/strategy/CoinSourceEditor'
 import { IndicatorEditor } from '../components/strategy/IndicatorEditor'
@@ -94,6 +94,7 @@ export function StrategyStudioPage() {
     duration_ms?: number
   } | null>(null)
   const [isRunningAiTest, setIsRunningAiTest] = useState(false)
+  const gridConfigCacheRef = useRef<Record<string, GridStrategyConfig>>({})
 
   const toggleSection = (section: keyof typeof expandedSections) => {
     setExpandedSections((prev) => ({
@@ -156,6 +157,12 @@ export function StrategyStudioPage() {
     fetchAiModels()
   }, [fetchStrategies, fetchAiModels])
 
+  useEffect(() => {
+    if (!selectedStrategy?.id || !editingConfig?.grid_config) return
+
+    gridConfigCacheRef.current[selectedStrategy.id] = { ...editingConfig.grid_config }
+  }, [selectedStrategy?.id, editingConfig?.grid_config])
+
   // Track previous language to detect actual changes
   const prevLanguageRef = useRef(language)
 
@@ -248,6 +255,12 @@ export function StrategyStudioPage() {
   // Delete strategy
   const handleDeleteStrategy = async (id: string) => {
     if (!token) return
+    const strategy = strategies.find((item) => item.id === id)
+
+    if (strategy?.is_active) {
+      notify.error(tr('cannotDeleteActiveStrategy'))
+      return
+    }
 
     // Check if strategy is in use by any trader before showing dialog
     try {
@@ -443,14 +456,51 @@ export function StrategyStudioPage() {
     section: K,
     value: StrategyConfig[K]
   ) => {
-    if (!editingConfig) return
+    setEditingConfig((prev) => {
-    setEditingConfig({
+      if (!prev) return prev
-      ...editingConfig,
+      return {
-      [section]: value,
+        ...prev,
+        [section]: value,
+      }
     })
     setHasChanges(true)
   }
 
+  const handleStrategyTypeChange = (strategyType: NonNullable<StrategyConfig['strategy_type']>) => {
+    if (selectedStrategy?.is_default) return
+
+    const cachedGridConfig = selectedStrategy?.id
+      ? gridConfigCacheRef.current[selectedStrategy.id]
+      : null
+
+    setEditingConfig((prev) => {
+      if (!prev) return prev
+
+      if (strategyType === 'ai_trading') {
+        if (selectedStrategy?.id && prev.grid_config) {
+          gridConfigCacheRef.current[selectedStrategy.id] = { ...prev.grid_config }
+        }
+
+        return {
+          ...prev,
+          strategy_type: 'ai_trading',
+          // Use null so the field is preserved in JSON and backend merge can actually clear it.
+          grid_config: null,
+        }
+      }
+
+      return {
+        ...prev,
+        strategy_type: 'grid_trading',
+        grid_config: cachedGridConfig ?? prev.grid_config ?? { ...defaultGridConfig },
+      }
+    })
+
+    setPromptPreview(null)
+    setAiTestResult(null)
+    setHasChanges(true)
+  }
+
   // Fetch prompt preview
   const fetchPromptPreview = async () => {
     if (!token || !editingConfig) return
@@ -666,7 +716,7 @@ export function StrategyStudioPage() {
               <Sparkles className="w-5 h-5 text-black" />
             </div>
             <div>
-              <h1 className="text-lg font-bold text-nofx-text">{tr('strategyStudio')}</h1>
+              <h1 className="text-lg font-bold text-nofx-text">{tr('title')}</h1>
               <p className="text-xs text-nofx-text-muted">{tr('subtitle')}</p>
             </div>
           </div>
@@ -743,8 +793,9 @@ export function StrategyStudioPage() {
                           </button>
                           <button
                             onClick={(e) => { e.stopPropagation(); handleDeleteStrategy(strategy.id) }}
-                            className="p-1 rounded hover:bg-nofx-danger/20 text-nofx-danger"
+                            disabled={strategy.is_active}
-                            title={tr('deleteTooltip')}
+                            className="p-1 rounded hover:bg-nofx-danger/20 text-nofx-danger disabled:opacity-40 disabled:cursor-not-allowed disabled:hover:bg-transparent"
+                            title={strategy.is_active ? tr('cannotDeleteActiveStrategy') : tr('deleteTooltip')}
                           >
                             <Trash2 className="w-3 h-3" />
                           </button>
@@ -848,13 +899,7 @@ export function StrategyStudioPage() {
                   </div>
                   <div className="grid grid-cols-2 gap-3">
                     <button
-                      onClick={() => {
+                      onClick={() => handleStrategyTypeChange('ai_trading')}
-                        if (!selectedStrategy?.is_default) {
-                          updateConfig('strategy_type', 'ai_trading')
-                          // Clear grid config when switching to AI trading
-                          updateConfig('grid_config', undefined)
-                        }
-                      }}
                       disabled={selectedStrategy?.is_default}
                       className={`p-3 rounded-lg border transition-all ${
                         (!editingConfig.strategy_type || editingConfig.strategy_type === 'ai_trading')
@@ -869,15 +914,7 @@ export function StrategyStudioPage() {
                       <p className="text-xs text-nofx-text-muted text-left">{tr('aiTradingDesc')}</p>
                     </button>
                     <button
-                      onClick={() => {
+                      onClick={() => handleStrategyTypeChange('grid_trading')}
-                        if (!selectedStrategy?.is_default) {
-                          updateConfig('strategy_type', 'grid_trading')
-                          // Initialize grid config if not exists
-                          if (!editingConfig.grid_config) {
-                            updateConfig('grid_config', defaultGridConfig)
-                          }
-                        }
-                      }}
                       disabled={selectedStrategy?.is_default}
                       className={`p-3 rounded-lg border transition-all ${
                         editingConfig.strategy_type === 'grid_trading'

web/src/types/strategy.ts

@@ -50,7 +50,7 @@ export interface StrategyConfig {
   risk_control: RiskControlConfig;
   prompt_sections?: PromptSectionsConfig;
   // Grid trading configuration (only used when strategy_type is 'grid_trading')
-  grid_config?: GridStrategyConfig;
+  grid_config?: GridStrategyConfig | null;
 }
 
 // Grid trading specific configuration