增加下载同步功能，可以导出已下载作品。避免另一个设备的重复下载，修复日志bug

ui/src/stores/registry.ts

@@ -0,0 +1,227 @@
+import { defineStore } from 'pinia';
+import { ref } from 'vue';
+import downloadService from '@/services/download';
+import { getApiBaseUrl } from '@/services/api';
+
+export interface RegistryStats {
+  totalArtists: number;
+  totalArtworks: number;
+  lastUpdated: string;
+}
+
+export interface RegistryConfig {
+  useRegistryCheck: boolean;
+  fallbackToScan: boolean;
+}
+
+export const useRegistryStore = defineStore('registry', () => {
+  // 状态
+  const stats = ref<RegistryStats | null>(null);
+  const config = ref<RegistryConfig>({
+    useRegistryCheck: true,
+    fallbackToScan: false
+  });
+  const loading = ref(false);
+  const error = ref<string | null>(null);
+
+  // 获取注册表统计信息
+  const fetchStats = async () => {
+    try {
+      loading.value = true;
+      error.value = null;
+      
+      const response = await downloadService.getRegistryStats();
+      if (response.success) {
+        // 映射API响应数据到组件期望的格式
+        stats.value = {
+          totalArtists: response.data.artistCount || 0,
+          totalArtworks: response.data.artworkCount || 0,
+          lastUpdated: response.data.updated_at || response.data.created_at || ''
+        };
+      } else {
+        throw new Error(response.error || '获取统计信息失败');
+      }
+    } catch (err: any) {
+      error.value = err.message || '获取统计信息失败';
+      console.error('获取注册表统计信息失败:', err);
+    } finally {
+      loading.value = false;
+    }
+  };
+
+  // 导出注册表
+  const exportRegistry = async () => {
+    try {
+      loading.value = true;
+      error.value = null;
+      
+      const response = await downloadService.exportRegistry();
+      
+      // 创建下载链接
+      const blob = new Blob([JSON.stringify(response, null, 2)], {
+        type: 'application/json'
+      });
+      const url = URL.createObjectURL(blob);
+      const link = document.createElement('a');
+      link.href = url;
+      link.download = `download-registry-${new Date().toISOString().split('T')[0]}.json`;
+      document.body.appendChild(link);
+      link.click();
+      document.body.removeChild(link);
+      URL.revokeObjectURL(url);
+      
+      return { success: true };
+    } catch (err: any) {
+      error.value = err.message || '导出注册表失败';
+      console.error('导出注册表失败:', err);
+      return { success: false, error: error.value };
+    } finally {
+      loading.value = false;
+    }
+  };
+
+  // 导入注册表
+  const importRegistry = async (file: File) => {
+    try {
+      loading.value = true;
+      error.value = null;
+      
+      const text = await file.text();
+      const registryData = JSON.parse(text);
+      
+      const response = await downloadService.importRegistry(registryData);
+      if (response.success) {
+        // 刷新统计信息
+        await fetchStats();
+        return { success: true, data: response.data };
+      } else {
+        throw new Error(response.error || '导入注册表失败');
+      }
+    } catch (err: any) {
+      error.value = err.message || '导入注册表失败';
+      console.error('导入注册表失败:', err);
+      return { success: false, error: error.value };
+    } finally {
+      loading.value = false;
+    }
+  };
+
+  // 重建注册表
+  const rebuildRegistry = async () => {
+    try {
+      loading.value = true;
+      error.value = null;
+      
+      const response = await downloadService.rebuildRegistry();
+      if (response.success) {
+        // 刷新统计信息
+        await fetchStats();
+        return { success: true, data: response.data };
+      } else {
+        throw new Error(response.error || '重建注册表失败');
+      }
+    } catch (err: any) {
+      error.value = err.message || '重建注册表失败';
+      console.error('重建注册表失败:', err);
+      return { success: false, error: error.value };
+    } finally {
+      loading.value = false;
+    }
+  };
+
+  // 清理注册表
+  const cleanupRegistry = async () => {
+    try {
+      loading.value = true;
+      error.value = null;
+      
+      const response = await downloadService.cleanupRegistry();
+      if (response.success) {
+        // 刷新统计信息
+        await fetchStats();
+        return { success: true, data: response.data };
+      } else {
+        throw new Error(response.error || '清理注册表失败');
+      }
+    } catch (err: any) {
+      error.value = err.message || '清理注册表失败';
+      console.error('清理注册表失败:', err);
+      return { success: false, error: error.value };
+    } finally {
+      loading.value = false;
+    }
+  };
+
+  // 获取配置
+  const fetchConfig = async () => {
+    try {
+      const response = await fetch(`${getApiBaseUrl()}/api/download/registry/config`);
+      const result = await response.json();
+      
+      if (result.success && result.data) {
+        config.value = result.data;
+        return result.data;
+      } else {
+        throw new Error(result.error || '获取配置失败');
+      }
+    } catch (err: any) {
+      error.value = err.message || '获取配置失败';
+      console.error('获取配置失败:', err);
+      throw err;
+    }
+  };
+
+  // 更新配置
+  const updateConfig = async (newConfig: Partial<RegistryConfig>) => {
+    try {
+      loading.value = true;
+      error.value = null;
+      
+      const response = await fetch(`${getApiBaseUrl()}/api/download/registry/config`, {
+        method: 'PUT',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify(newConfig),
+      });
+      
+      const result = await response.json();
+      
+      if (result.success && result.data) {
+        config.value = { ...config.value, ...result.data };
+        return { success: true, data: result.data };
+      } else {
+        throw new Error(result.error || '更新配置失败');
+      }
+    } catch (err: any) {
+      error.value = err.message || '更新配置失败';
+      console.error('更新配置失败:', err);
+      return { success: false, error: error.value };
+    } finally {
+      loading.value = false;
+    }
+  };
+
+  // 清除错误
+  const clearError = () => {
+    error.value = null;
+  };
+
+  return {
+    // 状态
+    stats,
+    config,
+    loading,
+    error,
+    
+    // 方法
+    fetchStats,
+    exportRegistry,
+    importRegistry,
+    rebuildRegistry,
+    cleanupRegistry,
+    fetchConfig,
+    updateConfig,
+    clearError
+  };
+});