#鸿蒙通关秘籍#如何将文件复制到HarmonyOS NEXT的缓存目录

import fs from '@ohos.file.fs';
import { JSON } from '@kit.ArkTS';

/**
 * 复制文件到缓存目录下
 * @param path :文件路径
 * @param context :Context
 * @returns Promise<string> 移动后文件路径
 */
export async function copyFileToCache(path: string, context: Context): Promise<string> {
  try {
    const file = fs.openSync(path, fs.OpenMode.READ_ONLY);
    console.log('cwx-copyFileToCache-', JSON.stringify(file));
    if (file) {
      const fileDir = `${context.cacheDir}`;
      const filename = path.split('/').pop();
      const newPath = `${new Date().getTime()}_${filename}`;
      const targetPath = `${fileDir}/${newPath}`;
      fs.copyFileSync(file.fd, targetPath);
      fs.closeSync(file.fd);
      return newPath;
    } else {
      return '';
    }
  } catch (e) {
    console.error('cwx-copyFileToCache-err-', JSON.stringify(e));
    return '';
  }
}
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