using System.IO.Compression;

namespace Common
{
    public class FileHelper
    {
        /// <summary>
        /// 解压zip文件
        /// </summary>
        /// <param name="zipPath">zip文件路径</param>
        /// <param name="extractPath">解压到的目标路径</param>
        /// <param name="overwrite">是否覆盖已存在的文件，默认覆盖</param>
        public static bool ExtractZip(string zipPath, string extractPath, bool overwrite = true)
        {
            try
            {
                zipPath = Function.getPath(zipPath);
                extractPath = Function.getPath(extractPath);
                ZipFile.ExtractToDirectory(zipPath, extractPath, overwrite);
                return true;
            }
            catch(Exception ex)
            {
                Utils.WriteLog(ex.ToString(), "FileHelper-ExtractZip");
                return false;
            }
        }


        public static List<string> GetSystemFiles(string directoryInfo)
        {
            List<string> SystemFiles = new List<string>();
            directoryInfo = Function.getPath(directoryInfo);
            System.IO.FileSystemInfo info = new System.IO.DirectoryInfo(directoryInfo);
            scan(SystemFiles, info);
            return SystemFiles;
        }
        private static void scan(List<string> SystemFiles, System.IO.FileSystemInfo info)
        {
            if (!info.Exists) return;
            System.IO.DirectoryInfo dir = info as System.IO.DirectoryInfo;
            //不是目录
            if (dir == null) return;
            System.IO.FileSystemInfo[] files = dir.GetFileSystemInfos();
            for (int i = 0; i < files.Length; i++)
            {
                System.IO.FileInfo file = files[i] as System.IO.FileInfo;
                //是文件
                if (file != null)
                {
                    SystemFiles.Add(file.FullName);
                }
                else scan(SystemFiles, files[i]);
            }
        }
    }
}