using System;
using System.IO;

namespace Fort23.Core
{
    public class FileHelper
    {
        public static void CleanDirectory(string dir)
        {
            foreach (string subdir in Directory.GetDirectories(dir))
            {
                Directory.Delete(subdir, true);
            }

            foreach (string subFile in Directory.GetFiles(dir))
            {
                File.Delete(subFile);
            }
        }

        public static void CopyDirectory(string srcDir, string tarTgtDir)
        {
            DirectoryInfo source = new DirectoryInfo(srcDir);
            DirectoryInfo target = new DirectoryInfo(tarTgtDir);
            if (target.FullName.StartsWith(source.FullName, StringComparison.CurrentCultureIgnoreCase))
            {
                throw new Exception("父目录不能拷贝到子目录！");
            }

            if (!source.Exists)
                return;

            if (!target.Exists)
                target.Create();

            FileInfo[] files = source.GetFiles();
            for (int i = 0; i < files.Length; i++)
            {
                File.Copy(files[i].FullName, Path.Combine(target.FullName, files[i].Name), true);
            }

            DirectoryInfo[] dirs = source.GetDirectories();
            for (int j = 0; j < dirs.Length; j++)
            {
                CopyDirectory(dirs[j].FullName, Path.Combine(target.FullName, dirs[j].Name));
            }
        }

        public static void CopyFile(string srcPath, string targetPath)
        {
            File.WriteAllBytes(targetPath, File.ReadAllBytes(srcPath));
        }
    }
}