新增：连接管理、数据查询等功能

web/src/views/db-cli/composables/useStructureStoreLegacy.ts

@@ -0,0 +1,81 @@
+/**
+ * @deprecated 请使用 useStructureStore
+ */
+import { ref } from 'vue'
+import { Message } from '@arco-design/web-vue'
+import { GetTableStructure } from '../../wailsjs/wailsjs/go/main/App'
+
+export function useStructureState() {
+  const structureLoading = ref(false)
+  const structureError = ref('')
+  const structureData = ref<any>(null)
+  const structureInfo = ref<{
+    connectionId: number
+    database: string
+    tableName: string
+    dbType: 'mysql' | 'mongo' | 'redis'
+    nodeType: string
+  } | null>(null)
+
+  const loadStructure = async (
+    connectionId: number,
+    database: string,
+    tableName: string,
+    dbType: 'mysql' | 'mongo' | 'redis',
+    nodeType: string
+  ) => {
+    if (nodeType === 'connection' || nodeType === 'database' || !tableName) {
+      structureInfo.value = { connectionId, database, tableName: '', dbType, nodeType }
+      structureData.value = null
+      return
+    }
+
+    try {
+      structureLoading.value = true
+      structureError.value = ''
+
+      if (!window.go?.main?.App?.GetTableStructure) {
+        throw new Error('Go 后端未就绪')
+      }
+
+      const result = await window.go.main.App.GetTableStructure(connectionId, database, tableName)
+      structureData.value = result
+      structureInfo.value = { connectionId, database, tableName, dbType, nodeType }
+    } catch (error: unknown) {
+      const errorMessage = error instanceof Error ? error.message : '加载表结构失败'
+      structureError.value = errorMessage
+      Message.error('加载表结构失败: ' + errorMessage)
+      structureData.value = null
+      structureInfo.value = null
+    } finally {
+      structureLoading.value = false
+    }
+  }
+
+  const clearStructure = () => {
+    structureData.value = null
+    structureInfo.value = null
+    structureError.value = ''
+  }
+
+  const refreshStructure = async () => {
+    if (!structureInfo.value) return
+    await loadStructure(
+      structureInfo.value.connectionId,
+      structureInfo.value.database,
+      structureInfo.value.tableName,
+      structureInfo.value.dbType,
+      structureInfo.value.nodeType
+    )
+  }
+
+  return {
+    structureLoading,
+    structureError,
+    structureData,
+    structureInfo,
+    loadStructure,
+    clearStructure,
+    refreshStructure
+  }
+}