using CommandLine;
using Grpc.Core;
using Protobuf;

namespace Server
{
    public class Program
    {
        /// <summary>
        /// Generated by http://www.network-science.de/ascii/ with font "standard"
        /// </summary>
        const string welcome =
@"

                  _____ _   _ _   _   _    ___ __   
                 |_   _| | | | | | | / \  |_ _/ /_  
                   | | | |_| | | | |/ _ \  | | '_ \ 
                   | | |  _  | |_| / ___ \ | | (_) |
                   |_| |_| |_|\___/_/   \_\___\___/ 

    ____               _             _            ____ _      _     _ 
   / ___|_ __ __ _  __| |_   _  __ _| |_ ___     / ___(_)_ __| |___| |
  | |  _| '__/ _` |/ _` | | | |/ _` | __/ _ \   | |  _| | '__| / __| |
  | |_| | | | (_| | (_| | |_| | (_| | ||  __/_  | |_| | | |  | \__ \_|
   \____|_|  \__,_|\__,_|\__,_|\__,_|\__\___( )  \____|_|_|  |_|___(_)


";
        // 特别说明：在 .NET 7 及以上，C# 支持新的多行字符串，允许多行前面缩进，因此可以不必再定格写字符串，
        // 即升级 .NET 版本后可以改为如下的：
        // const string welcome = """
        // 
        //                   _____ _   _ _   _   _    ___ __   
        //                  |_   _| | | | | | | / \  |_ _/ /_  
        //                    | | | |_| | | | |/ _ \  | | '_ \ 
        //                    | | |  _  | |_| / ___ \ | | (_) |
        //                    |_| |_| |_|\___/_/   \_\___\___/ 
        // 
        //     ____               _             _            ____ _      _     _ 
        //    / ___|_ __ __ _  __| |_   _  __ _| |_ ___     / ___(_)_ __| |___| |
        //   | |  _| '__/ _` |/ _` | | | |/ _` | __/ _ \   | |  _| | '__| / __| |
        //   | |_| | | | (_| | (_| | |_| | (_| | ||  __/_  | |_| | | |  | \__ \_|
        //    \____|_|  \__,_|\__,_|\__,_|\__,_|\__\___( )  \____|_|_|  |_|___(_)
        // 
        // 
        // """; // 将以此结束符为基准开始缩进（但 Python 没有这个 feature，差评 x）

        static ServerBase CreateServer(ArgumentOptions options)
        {
            return options.Playback ? new PlaybackServer(options) : new GameServer(options);
        }

        static int Main(string[] args)
        {
            foreach (var arg in args)
            {
                Console.Write($"{arg} ");
            }
            Console.WriteLine();

            ArgumentOptions? options = null;
            _ = Parser.Default.ParseArguments<ArgumentOptions>(args).WithParsed(o => { options = o; });
            if (options == null)
            {
                Console.WriteLine("Argument parsing failed!");
                return 1;
            }

            if (options.StartLockFile == DefaultArgumentOptions.FileName)
            {
                Console.WriteLine(welcome);
            }
            Console.WriteLine("Server begins to run: " + options.ServerPort.ToString());

            try
            {
                var server = CreateServer(options);
                Grpc.Core.Server rpcServer = new Grpc.Core.Server(new[] { new ChannelOption(ChannelOptions.SoReuseport, 0) })
                {
                    Services = { AvailableService.BindService(server) },
                    Ports = { new ServerPort(options.ServerIP, options.ServerPort, ServerCredentials.Insecure) }
                };
                rpcServer.Start();

                Console.WriteLine("Server begins to listen!");
                server.WaitForEnd();
                Console.WriteLine("Server end!");
                rpcServer.ShutdownAsync().Wait();

                Thread.Sleep(50);
                Console.WriteLine("");
                Console.WriteLine("===================  Final Score  ====================");
                Console.WriteLine($"Studnet: {server.GetScore()[0]}");
                Console.WriteLine($"Tricker: {server.GetScore()[1]}");
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.ToString());
                Console.WriteLine(ex.StackTrace);
            }
            return 0;
        }
    }
}