using System.ComponentModel;
using System.Text.Json;
using TouchSocket.Dmtp.Rpc;
using TouchSocket.Rpc;

namespace Net;

public class GetFilesRpcServer : RpcServer
{
    [Description("获取文件列表")] //服务描述，在生成代理时，会变成注释。
    // [DmtpRpc("GetFiles")] //服务注册的函数键，此处为显式指定。默认不传参的时候，为该函数类全名+方法名的全小写。
    public byte[]? GetFiles()
    {
        var rootPath = "E:\\zRoot\\S";
        var directoryInfo = new DirectoryInfo(rootPath);
        if (!directoryInfo.Exists)
            return null;
        var fileInfos = directoryInfo.GetFiles("*", SearchOption.TopDirectoryOnly);
        var results = new ServerFileInfo[fileInfos.Length];
        for (var index = 0; index < fileInfos.Length; index++)
        {
            var fileInfo = fileInfos[index];
            results[index] = new ServerFileInfo(fileInfo.FullName, fileInfo.Length, fileInfo.LastWriteTime);
        }

        var serializeToUtf8Bytes = JsonSerializer.SerializeToUtf8Bytes(results);
        return serializeToUtf8Bytes;
    }
}

[Serializable]
public record ServerFileInfo(string path, long siz, DateTime modifyTime);