using System;
using System.IO;

namespace ProtoCSStruct
{
    /// <summary>
    /// 本工具的作用是根据proto协议描述（有修改，增加了stringlength,repeatedcount这2个限定项）生成c#结构体消息数据
    /// 目的是为了协议解包打包提高效率，官方的protobuf库解包，打包会生成大量对象，对游戏服务器来说，随着承载量的提高，
    /// 消息包数量过大将会频繁的触发gc，造成严重的STW（stop the world）问题,虽然每次0代gc比较快，但几个服务器累积起来将会
    /// 严重的拖慢消息包处理速度，玩家直接的感受就是网络卡，服务器响应慢
    /// </summary>
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                InputParams ip = new InputParams();
                ip.Parse(args);

                //测试模式
                if (ip.TestOnly)
                {
                    ProtoCSStructTest.TestMain.Run();
                    Console.Read();
                    return;
                }


                foreach (var pathfile in ip.ProtoFiles)
                {
                    string filename = Path.GetFileName(pathfile);
                    string filewithoutext = Path.GetFileNameWithoutExtension(pathfile);

                    string outfilename = filewithoutext + "_struct.cs";
                    string enumOutFileName = filewithoutext + "_enum.cs";
                    string classOutFileName = filewithoutext + "_class.cs";

                    ProtoFileParser fileParse = new ProtoFileParser();
                    ProtoDescriptor pd = fileParse.Parse(pathfile, ip.NameSpace, ip.CSharpOutDir
                        , ip.CSharpOutDir + "/" + outfilename
                        , ip.CSharpOutDir + "/" + enumOutFileName
                        , ip.CSharpOutDir + "/" + classOutFileName
                        , ip.GenClassConfig);
                }

                CSharpStructWriter writer = new CSharpStructWriter();
                writer.WriteCSStructFile();
            }
            catch (ProtoParseException ex)
            {
                //解析错误
                Console.WriteLine(ex.Message);
            }
            catch (Exception ex)
            {
                //运行错误
                Console.WriteLine(ex.Message);
                Console.WriteLine(ex.StackTrace);
            }
        }
    }
}