fix: safari配额不足时自动清理旧数据后重试保存

Author: Hronrad

src/utils/webdav.ts

@@ -93,22 +93,35 @@ export async function syncFromWebDAV(): Promise<void> {
 
   console.log(`[WebDAV] Downloaded size: ${(data.length / 1024).toFixed(2)} KB`)
 
-  // 检查当前 localStorage 使用情况
-  let currentSize = 0
-  for (const key in localStorage) {
-    if (localStorage.hasOwnProperty(key))
-      currentSize += (localStorage[key]?.length || 0) + key.length
-  }
-  console.log(`[WebDAV] Current localStorage: ${(currentSize / 1024).toFixed(2)} KB`)
-  
   try {
+    // 先尝试直接保存
     localStorage.setItem('chatStorage', data)
     console.log('[WebDAV] Saved successfully')
   }
   catch (error: any) {
     console.error('[WebDAV] Save error:', error)
-    if (error.name === 'QuotaExceededError')
-      throw new Error(`Safari存储空间不足 (需要${(data.length / 1024).toFixed(1)}KB)。请在Safari设置中清除网站数据`)
-    throw new Error(`保存失败: ${error.message}`)
+    
+    if (error.name === 'QuotaExceededError') {
+      // Safari 配额不足，尝试清理后再保存
+      console.log('[WebDAV] Attempting to clear old data and retry...')
+      
+      try {
+        // 保留配置，清除聊天数据
+        const oldConfig = localStorage.getItem(WEBDAV_CONFIG_KEY)
+        localStorage.clear()
+        if (oldConfig)
+          localStorage.setItem(WEBDAV_CONFIG_KEY, oldConfig)
+        
+        // 重试保存
+        localStorage.setItem('chatStorage', data)
+        console.log('[WebDAV] Saved after clearing old data')
+      }
+      catch (retryError: any) {
+        throw new Error('Safari存储空间不足。请在Safari设置 > 隐私 > 管理网站数据中清除本站数据，或使用Chrome/Edge浏览器')
+      }
+    }
+    else {
+      throw new Error(`保存失败: ${error.message}`)
+    }
   }
 }