using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using JsonRpcLite.InProcess;
using JsonRpcLite.Network;
using JsonRpcLite.Rpc;
using WingServerCommon.Service;
using WingServerCommon.Log;
using WingServerCommon.Config;
using WingServerCommon.Config.Parameters;
using WingInterfaceLibrary.OpLog;
using WingCloudServer.InteractionCenter;
using System.Runtime.Loader;
using JsonRpcLite.Utilities;
using System.Threading.Tasks;
using WingInterfaceLibrary.Interface.DBInterface;
using WingInterfaceLibrary.Interface;
using Newtonsoft.Json;
using WingInterfaceLibrary.Request.Authentication;
using JsonRpcLite.Services;
using WingInterfaceLibrary.Enum;
using WingCloudServer.Plugin;
using WingInterfaceLibrary.DTO.DistributedServerInfo;
using CSScriptLib;
using System.Reflection;

namespace WingCloudServer
{
    internal class WingServer
    {
        private JsonRpcServer _rpcHttpServer;
        private JsonRpcServer _rpcInProcessServer;
        private JsonRpcInProcessEngine _inProcessEngine;
        private JsonRpcHttpServerEngine _jsonRpcHttpServerEngine;
        private Dictionary<Type, object> _rpcServices;

        public WingServer(string host)
        {
            _rpcInProcessServer = new JsonRpcServer();
            _inProcessEngine = new JsonRpcInProcessEngine();
            _rpcInProcessServer.UseEngine(_inProcessEngine);
            _rpcHttpServer = new JsonRpcServer();
            _jsonRpcHttpServerEngine = new JsonRpcHttpServerEngine(host);
            _rpcHttpServer.UseEngine(_jsonRpcHttpServerEngine);
        }



        private TokenVerifyPlugin _tokenVerifyPlugin;
        private IPAddressPlugin _ipAddressPlugin;
        private ServerListPlugin _serverListPlugin;

        /// <summary>
        /// Start server to load all service
        /// </summary>
        internal void Start()
        {
            InitializeServices();
            //按注册顺序执行
            _jsonRpcHttpServerEngine.RegisterPlugin(_tokenVerifyPlugin);
            _jsonRpcHttpServerEngine.RegisterPlugin(_ipAddressPlugin);
            _jsonRpcHttpServerEngine.RegisterPlugin(_serverListPlugin);
            _rpcInProcessServer.Start();
            LoadDataAfterRegister();
            _rpcHttpServer.Start();
        }

        /// <summary>
        /// Stop server
        /// </summary>
        internal void Stop()
        {
            //TODO dispose service
            _rpcHttpServer.Stop();
            _rpcInProcessServer.Stop();
        }

        void InitializeServices()
        {
            var folder = Path.Combine(AppDomain.CurrentDomain.BaseDirectory);
            //initiaize rpc client pool
            var rpcClientPool = new JsonRpcClientPool(_inProcessEngine);
            var inProcessServicesString = ConfigurationManager.GetParammeter<StringParameter>("Services", "InProcess").Value;
            var inProcessServices = inProcessServicesString.Split(',');
            var rpcHttpServicesString = ConfigurationManager.GetParammeter<StringParameter>("Services", "JsonRpcHttp").Value;
            var rpcHttpServices = rpcHttpServicesString.Split(',');
            if (!Directory.Exists(folder))
            {
                throw new NotSupportedException($"Folder {folder} not exist");
            }
            //InitAIDiagnosis();

            //InProcess service load and register to InPrcess rpc server
            _rpcServices = new Dictionary<Type, object>();
            foreach (var service in inProcessServices)
            {
                var wingServiceType = LoadService(folder, service);
                var instance = Activator.CreateInstance(wingServiceType);
                _rpcServices.Add(wingServiceType, instance);
                var interfaces = wingServiceType.GetInterfaces();
                foreach (var serviceInterface in interfaces)
                {
                    if (serviceInterface == typeof(IDisposable))
                    {
                        continue;
                    }
                    if (serviceInterface == typeof(IJsonRpcService))
                    {
                        continue;
                    }
                    Logger.WriteLineInfo($"Registering type-{wingServiceType.Name}, interface-{serviceInterface.Name} to Rpc InProcess Server");
                    _rpcInProcessServer.RegisterService(serviceInterface, instance);

                }
            }
            var remoteRpcHttpServices = LoadRemoteServiceConfig(folder);//new RemoteServiceInfo[0]; 
            rpcClientPool.Initialize(remoteRpcHttpServices.ToArray());
            //Rpc http service load and register to rpc http server
            if (ConfigurationManager.IsDistributed)
            {
                if (ConfigurationManager.IsMaster)
                {
                    var masterInteractionCenterService = new MasterInteractionCenterService();
                    _rpcHttpServer.RegisterService(typeof(IMasterInteractionCenterService), masterInteractionCenterService);
                    masterInteractionCenterService.Load(rpcClientPool);
                }
                else
                {
                    //TODO determin if we need to assess slave server on master server
                }
            }

            // AssemblyLoadContext.Default.Resolving += (assemblyLoadContext, assemblyName) =>
            // {                
            //     //var path = _assemblyDependencyResolver.ResolveUnmanagedDllToPath(assemblyName.FullName);
            //     Console.WriteLine($"LoadAssemblyDependencies :{assemblyLoadContext.Name} --- {assemblyName.Name}");                
            //     return null;
            // };

            foreach (var service in rpcHttpServices)
            {
                var wingServiceType = LoadService(folder, service);
                var instance = Activator.CreateInstance(wingServiceType);
                _rpcServices.Add(wingServiceType, instance);
                var interfaces = wingServiceType.GetInterfaces();
                foreach (var serviceInterface in interfaces)
                {
                    if (serviceInterface == typeof(IDisposable))
                    {
                        continue;
                    }
                    if (serviceInterface == typeof(IJsonRpcService))
                    {
                        continue;
                    }
                    Logger.WriteLineInfo($"Registering type-{wingServiceType.Name}, interface-{serviceInterface.Name} to Rpc Http Server");
                    _rpcHttpServer.RegisterService(serviceInterface, instance);

                }
            }

            //load service if distrubuted system
            if (ConfigurationManager.IsDistributed)
            {
                if (ConfigurationManager.IsMaster)
                {
                    //_rpcHttpServer.RegisterService(IMaster); TODO
                }
                else
                {
                    //动态注册副服务器实时同步服务
                    RegisterDynamicSlaveInteractionCenterService(rpcClientPool);
                }
            }

            //load services
            foreach (var service in _rpcServices)
            {
                var method = service.Key.GetMethod("Load");
                method.Invoke(service.Value, new object[] { rpcClientPool });
            }

            //最快服务器
            var vinnoServerService = new VinnoServerService();
            _rpcHttpServer.RegisterService(typeof(WingInterfaceLibrary.Interface.IVinnoServerService), vinnoServerService);
            vinnoServerService.Load(rpcClientPool);

            //plugin 
            _tokenVerifyPlugin = new TokenVerifyPlugin();
            _rpcHttpServer.RegisterService(typeof(ITokenVerifyPlugin), _tokenVerifyPlugin);
            _tokenVerifyPlugin.Load(rpcClientPool);
            _ipAddressPlugin = new IPAddressPlugin();
            _rpcHttpServer.RegisterService(typeof(IIPAddressPlugin), _ipAddressPlugin);
            _ipAddressPlugin.Load(rpcClientPool);
            _serverListPlugin = new ServerListPlugin();
            _rpcHttpServer.RegisterService(typeof(IServerListPlugin), _serverListPlugin);
            _serverListPlugin.Load(rpcClientPool);

        }
        //todo 待验证是否可以调用本地的service
        public void RegisterDynamicSlaveInteractionCenterService(JsonRpcClientPool rpcClientPool)
        {
            var eval = CSScript.Evaluator.ReferenceDomainAssemblies(DomainAssemblies.AllStaticNonGAC);
            var host = ConfigurationManager.Host.Replace("http:", "").Replace(".", "").Replace("/", "");
            var str = @"
                    using System;
                    using System.Threading.Tasks;
                    using WingServerCommon.Service;
                    using WingInterfaceLibrary.OpLog;
                    using System.Collections.Generic;
                    using JsonRpcLite.Rpc;
                    using WingInterfaceLibrary.Interface.DBInterface;
                    using WingInterfaceLibrary.DB.Request;
                                     
                    public interface IDynamicSlaveService" + host + @"
                    {
                        Task<bool> DynamicSlaveAsync(SyncReceiveServiceDataRequest request);
                    }
                    public class DynamicSlaveService : JsonRpcService,IDynamicSlaveService" + host + @"
                    {
                        protected ISlaveInteractionCenterService _slaveInteractionCenterService;
                        public override void Load(JsonRpcClientPool jsonRpcClientPool)
                        {
                            base.Load(jsonRpcClientPool);
                            _slaveInteractionCenterService = GetProxy<ISlaveInteractionCenterService>();
                        }
                        public async Task<bool> DynamicSlaveAsync(SyncReceiveServiceDataRequest request)
                        {
                            await _slaveInteractionCenterService.SyncReceiveMasterServiceDataAsync(request);
                            return true;
                        }
                    }
                    public class DynamicMethodClass
                    {
                        public void DynamicMethod(JsonRpcClientPool rpcClientPool,JsonRpcServer _rpcHttpServer){
                            var DynamicSlaveService = new DynamicSlaveService();
                            _rpcHttpServer.RegisterService(typeof(IDynamicSlaveService" + host + @"), DynamicSlaveService);
                            DynamicSlaveService.Load(rpcClientPool);
                        }
                    }
                    ";
            Assembly compilecode = eval.CompileCode(str);
            var ps = compilecode.GetType("css_root+DynamicMethodClass");
            var obj = compilecode.CreateInstance("css_root+DynamicMethodClass");
            var mes = ps.GetMethod("DynamicMethod");
            mes.Invoke(obj, new object[] { rpcClientPool, _rpcHttpServer });
        }
        void LoadDataAfterRegister()
        {
            foreach (var service in _rpcServices)
            {
                var method = service.Key.GetMethod("LoadAfterRegister");
                method.Invoke(service.Value, null);
            }
        }

        private Type LoadService(string folder, object serviceName)
        {
            var file = Path.Combine(folder, $"{serviceName}.dll");
            if (!Directory.Exists(folder))
            {
                throw new NotSupportedException($"File {file} not exist");
            }

            var assembly = AssemblyLoader.LoadAssemblyDependencies(file);
            var types = assembly.GetTypes();
            var wingServiceType = types.FirstOrDefault(x => typeof(JsonRpcService).IsAssignableFrom(x) && x.IsClass && !x.IsAbstract);
            if (wingServiceType == null)
            {
                throw new NotImplementedException($"WingService not find in {file}");
            }

            return wingServiceType;
        }

        /// <summary>
        /// 加载 远程服务 配置
        /// </summary>
        /// <returns></returns>
        private List<RemoteServiceInfo> LoadRemoteServiceConfig(string folder)
        {
            List<RemoteServiceInfo> resList = new List<RemoteServiceInfo>();
            if (ConfigurationManager.IsDistributed)
            {
                if (ConfigurationManager.IsMaster)
                {
                    DynamicRemoteSlaveService(resList);
                }
                else
                {
                    var serviceInfo = new RemoteServiceInfo()
                    {
                        ServiceName = "IMasterInteractionCenterService",
                        Url = ConfigurationManager.MasterUrl
                    };
                    resList.Add(serviceInfo);
                }
            }
            var remoteConfig = ConfigurationManager.GetParammeter<StringParameter>("Services", "Remote").Value;
            if (!string.IsNullOrEmpty(remoteConfig) && remoteConfig.Split(',').Length > 0)
            {
                var remoteList = remoteConfig.Split(',');
                foreach (var serviceInfo in remoteList)
                {
                    var remoteArray = serviceInfo.Split('|');
                    var moduleName = remoteArray[0];//模块名称
                    var url = remoteArray[1];//URL
                    var wingServiceType = LoadService(folder, remoteArray[0]);
                    var interfaces = wingServiceType.GetInterfaces();
                    foreach (var serviceInterface in interfaces)
                    {
                        if (serviceInterface == typeof(IDisposable))
                        {
                            continue;
                        }
                        if (serviceInterface == typeof(IJsonRpcService))
                        {
                            continue;
                        }
                        var Info = new RemoteServiceInfo()
                        {
                            ServiceName = serviceInterface.Name,
                            Url = url
                        };
                        resList.Add(Info);
                    }
                }
            }
            return resList;
        }

        public void DynamicRemoteSlaveService(List<RemoteServiceInfo> resList)
        {
            var slaveList = new List<DistributedServerInfoDTO>();
            var host = ConfigurationManager.Host;
            var eval = CSScript.Evaluator.ReferenceDomainAssemblies(DomainAssemblies.AllStaticNonGAC);
            var str = @"
            using System;
            using System.Threading.Tasks;
            using WingServerCommon.Service;
            using WingInterfaceLibrary.OpLog;
            using System.Collections.Generic;
            using JsonRpcLite.Rpc;
            using WingInterfaceLibrary.Interface.DBInterface;
            using WingInterfaceLibrary.DB.Request;
            using WingInterfaceLibrary.DTO.DistributedServerInfo;
            using WingInterfaceLibrary.Request.DBRequest;
            using System.Linq;

            public class GetUrlListService : JsonRpcService
            {
                protected IDistributedServerInfoDBService _distributedServerInfoDBService;
                public override void Load(JsonRpcClientPool jsonRpcClientPool)
                {
                    base.Load(jsonRpcClientPool);
                    _distributedServerInfoDBService = GetProxy<IDistributedServerInfoDBService>();
                }

                public List<DistributedServerInfoDTO> GetSlaveList(string host,List<DistributedServerInfoDTO> slaveList)
                {
                    var distributedServerInfoDBPagesRequest = new GetDistributedServerInfoDBPagesRequest();
                    distributedServerInfoDBPagesRequest.CurrentPage = 1;
                    distributedServerInfoDBPagesRequest.PageSize = 9999;
                    var result = _distributedServerInfoDBService.GetDistributedServerInfoPagesAsync(distributedServerInfoDBPagesRequest).Result;
                    if (result != null && result.TotalCount > 0)
                    {
                        slaveList = result.PageData;
                        slaveList = slaveList.Where(x => x.ServerUrl != host).ToList();
                    }
                    return slaveList;
                }
            }
            ";
            Assembly compilecode = eval.CompileCode(str);
            var ps = compilecode.GetType("css_root+GetUrlListService");
            var obj = compilecode.CreateInstance("css_root+GetUrlListService");
            var mes = ps.GetMethod("GetSlaveList");
            mes.Invoke(obj, new object[] { slaveList });
            //动态注册副服务器服务
            foreach (var item in slaveList)
            {
                var serviceInfo = new RemoteServiceInfo()
                {
                    ServiceName = "IDynamicSlaveService" + item.ServerUrl.Replace("http:", "").Replace(".", "").Replace("/", ""),
                    Url = ConfigurationManager.MasterUrl
                };
                resList.Add(serviceInfo);
            }
        }

        /// <summary>
        /// 初始化AIDiagnosis
        /// </summary>
        private void InitAIDiagnosis()
        {
            try
            {
                var dllsRootPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "AIDiagnosis");
                var destFolder = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Dependencies");
                CopyFilesAndDirs(dllsRootPath, destFolder);
            }
            catch (Exception ex)
            {
                Logger.WriteLineError($"InitAIDiagnosis error:{ex}");
            }
        }

        private void CopyFilesAndDirs(string sourceDir, string destDir)
        {
            if (!Directory.Exists(sourceDir))
            {
                return;
            }
            if (!Directory.Exists(destDir))
            {
                Directory.CreateDirectory(destDir);
            }
            string newPath;
            FileInfo fileInfo;
            string[] files = Directory.GetFiles(sourceDir);
            foreach (string path in files)
            {
                fileInfo = new FileInfo(path);
                newPath = destDir + "\\" + fileInfo.Name;
                File.Copy(path, newPath, true);
            }
            string[] dirs = Directory.GetDirectories(sourceDir);
            foreach (string path in dirs)
            {
                DirectoryInfo directory = new DirectoryInfo(path);
                string newDir = destDir + "\\" + directory.Name;
                CopyFilesAndDirs(path + "\\", newDir + "\\");
            }
        }
    }
}