using System;
using System.Collections.Generic;
using System.IO;
using System.Threading.Tasks;
using Vinno.IUS.Common.Network;
using Vinno.IUS.Common.Network.Leaf;
using Vinno.IUS.Common.Network.Tcp;
using Vinno.IUS.Common.Network.Transfer;
using Vinno.vCloud.Common.Storage;
using Vinno.vCloud.Common.Storage.ObjectStorageInfo;
using Vinno.vCloud.Common.Storage.Upload;
using Vinno.vCloud.Protocol.Infrastructures;
using Vinno.vCloud.Protocol.Initializers;
using Vinno.vCloud.Protocol.Messages.Client.Login;
using Vinno.vCloud.Protocol.Messages.Client.Storage;
using Vinno.vCloud.Protocol.Messages.Common;
using Vinno.vCloud.Protocol.Messages.Login;
using Vinno.vCloud.Protocol.Messages.Upgrade;

namespace UpgradePackageUploadTool.Services
{
    public class vCloudService
    {
        private StorageInfo _storageInfo;
        private object _storageInfoLocker = new object();
        private ClientLeaf _leaf;
        private string _accountId;

        /// <summary>
        /// The event of Upload Progress Changing.
        /// </summary>
        public event EventHandler<int> UploadProgressChanged;

        /// <summary>
        /// 服务器IP
        /// </summary>
        public string ServerIP { get; set; }

        /// <summary>
        /// 服务器端口
        /// </summary>
        public int ServerPort { get; set; }

        /// <summary>
        /// 用户名
        /// </summary>
        public string Account { get; set; }

        /// <summary>
        /// 密码
        /// </summary>
        public string Password { get; set; }

        /// <summary>
        /// 构造函数，初始化
        /// </summary>
        public vCloudService()
        {
            UploadHelper.GetAuthorization = GetUpgradeAuthorization;
            UploadHelper.GetCopyAuthorization = GetUpgradeCopyAuthorization;
            //Initial clientTags
            ClientTagsInitializer.Initialize();
        }

        /// <summary>
        /// Connect Server Async
        /// </summary>
        /// <returns></returns>
        public async Task<LoginStatus> ConnectServerAsync()
        {
            if (_leaf == null || !_leaf.Online)
            {
                await Task.Run(() => { RefreshLeaf(ServerIP, ServerPort); });
            }
            using (var clientLoginRequest2 = MessagePool.GetMessage<ClientLoginRequest2>())
            {
                clientLoginRequest2.Name = Account;
                clientLoginRequest2.Password = Password;
                clientLoginRequest2.Source = LoginSource.PersonalComputer;
                clientLoginRequest2.ClientVersion = "Upgrade Package Upload Tool";
                clientLoginRequest2.Force = true;
                try
                {
                    var result = await _leaf.SendAsync(clientLoginRequest2);
                    var loginResult = LoginResult2.Convert(result);
                    if (loginResult != null)
                    {
                        _accountId = loginResult.AccountId;
                        return loginResult.Status;
                    }
                }
                catch (ConnectionTimeoutException)
                {
                    return LoginStatus.ConnectionTmeout;
                }
                catch (NotConnectedException)
                {
                    return LoginStatus.ConnectServerFailed;
                }
                catch (Exception ex)
                {
                    return LoginStatus.Unknown;
                }
            }
            return LoginStatus.Unknown;
        }

        /// <summary>
        /// DisConnect Server Async
        /// </summary>
        /// <returns></returns>
        public async Task<LogoffStatus> DisconnectServerAsync()
        {
            if (_leaf == null || !_leaf.Online)
            {
                return LogoffStatus.Success;
            }
            try
            {
                var clientLogoffRequest = MessagePool.GetMessage<ClientLogoffRequest>();
                clientLogoffRequest.Name = Account;
                clientLogoffRequest.Password = Password;
                clientLogoffRequest.Source = LoginSource.PersonalComputer;
                var result = await _leaf.SendAsync(clientLogoffRequest);
                var logoffResult = LogoffResult.Convert(result);
                if (logoffResult != null)
                {
                    return logoffResult.Status;
                }
            }
            catch
            {
                return LogoffStatus.Unknown;
            }
            return LogoffStatus.Unknown;
        }

        private void LeafOnlineCheck()
        {
            if (!_leaf.Online)
            {
                RefreshLeaf(ServerIP, ServerPort);
            }
        }

        private void RefreshLeaf(string serverIP, int serverPort)
        {
            _leaf?.Close();
            if (string.IsNullOrEmpty(serverIP) || serverPort == 0)
            {
                throw new Exception("Server IP or Server Port is wrong!");
            }
            var tcpCreator = new TcpCreator(serverIP, serverPort);
            if (!tcpCreator.HasValidIpAddress)
            {
                throw new Exception($"Tcp Creator dosen't have valid Ip Address");
            }
            _leaf = new ClientLeaf(new LeafIdContext(), LeafMode.Dual, tcpCreator);
            if (!_leaf.Online)
            {
                _leaf.Close();
                throw new Exception("Connect Server Failed.");
            }
        }

        /// <summary>
        /// Upload Package Async
        /// </summary>
        /// <param name="filePath">Pakage Path</param>
        /// <param name="version">Package Version</param>
        /// <param name="fileName">Package Name</param>
        /// <param name="description">Description</param>
        /// <returns></returns>
        public async Task<GeneralPackInfo> UploadDataAsync(string filePath, string version, string fileName, string description, string uniqueCode)
        {
            return await Task.Run(() =>
            {
                LeafOnlineCheck();
                var storageInfo = GetUpgradeStorageInfo();
                var fileData = File.ReadAllBytes(filePath);
                var fileToken = UploadHelper.UploadFile(storageInfo, filePath, fileName, _accountId, uploadProgress =>
                {
                    var progress = (int)(uploadProgress * 100 * 0.95);
                    OnUploadProgressChanged(progress);
                }, null, false, true);
                if (string.IsNullOrEmpty(fileToken))
                {
                    throw new Exception("Upload Fail!File Token is null");
                }
                if (storageInfo.StorageType == StorageType.Default && !fileToken.Contains(FileTokenInfo.TokenSplitor[0]))
                {
                    fileToken = $"{(int)storageInfo.StorageType}{FileTokenInfo.TokenSplitor[0]}{fileToken}";
                }
                using (var savePackageRequest = MessagePool.GetMessage<SavePackageRequest>())
                {
                    savePackageRequest.CreateUserId = _accountId;
                    savePackageRequest.Description = description;
                    savePackageRequest.Version = version;
                    savePackageRequest.FileSize = (int)new FileInfo(filePath).Length;
                    savePackageRequest.FileToken = fileToken;
                    savePackageRequest.UniquedCode = uniqueCode;
                    savePackageRequest.FileName = fileName;
                    var message = _leaf.Send(savePackageRequest);
                    if (message == null)
                    {
                        throw new Exception("Create Package Request Fail.");
                    }
                    var ok = ResultMessage.Convert(message);
                    if (ok == null || ok.ResultCode != OKResult.Code)
                    {
                        throw new Exception("Create Package Request Fail.");
                    }
                    OnUploadProgressChanged(100);
                    return new GeneralPackInfo(Account, description, fileName, fileToken, savePackageRequest.FileSize, PackageType.Other, DateTime.UtcNow, version, uniqueCode);
                }
            });
        }

        private void OnUploadProgressChanged(int progress)
        {
            UploadProgressChanged?.Invoke(this, progress);
        }

        /// <summary>
        /// Get Latest Package Info Async
        /// </summary>
        /// <returns></returns>
        public async Task<GeneralPackInfo> GetLatestPackageAsync(string uniquedCode)
        {
            using (var queryLatestPackageRequest = MessagePool.GetMessage<QueryLatestPackageRequest>())
            {
                queryLatestPackageRequest.UniquedCode = uniquedCode;
                var message = await _leaf.SendAsync(queryLatestPackageRequest);
                if (message == null)
                {
                    return null;
                }
                var result = GetPackageResult.Convert(message);
                if (result != null)
                {
                    return new GeneralPackInfo(result.CreateUserName, result.Description, result.FileName, result.FileToken, result.FileSize, result.PackageType, result.UpdateTime, result.Version, result.UniquedCode);
                }
            }

            return null;
        }

        private StorageInfo GetUpgradeStorageInfo()
        {
            lock (_storageInfoLocker)
            {
                using (var request = MessagePool.GetMessage<GetUpgradeStorageInfoRequest>())
                {
                    var result = _leaf.Send(request);
                    var getUpgradeInfoResult = GetUpgradeStorageInfoResult.Convert(result);
                    if (getUpgradeInfoResult != null)
                    {
                        var url = getUpgradeInfoResult.StorageServerUrl;
                        var storageType = getUpgradeInfoResult.StorageType;
                        var config = getUpgradeInfoResult.Config;
                        _storageInfo = new StorageInfo()
                        {
                            Url = url,
                            StorageType = storageType,
                            Config = config
                        };
                        NodeMapping.NodeMappingInilization(_storageInfo.StorageNodeItems);
                    }
                }
                return _storageInfo;
            }
        }

        private string GetUpgradeAuthorization(string fileName)
        {
            var authorization = string.Empty;
            var getUpgradeAuthorizationRequest = new GetUpgradeAuthorizationRequest();
            getUpgradeAuthorizationRequest.FileName = fileName;
            var upgradeResult = _leaf.Send(getUpgradeAuthorizationRequest);
            var getUpgradeAuthorizationResult = GetUpgradeAuthorizationResult.Convert(upgradeResult);
            if (getUpgradeAuthorizationResult != null)
            {
                authorization = getUpgradeAuthorizationResult.Authorization;
            }
            return authorization;
        }

        private string GetUpgradeCopyAuthorization(string fileName, List<KeyValuePair<string, string>> headers)
        {
            var authorization = string.Empty;
            var getUpgradeCopyAuthorizationRequest = new GetUpgradeCopyAuthorizationRequest();
            getUpgradeCopyAuthorizationRequest.FileName = fileName;
            var list = new List<KeyValuePairHeaderItem>();
            if (headers?.Count > 0)
            {
                foreach (var item in headers)
                {
                    list.Add(new KeyValuePairHeaderItem()
                    {
                        HeaderKey = item.Key,
                        HeaderValue = item.Value
                    });
                }
            }
            getUpgradeCopyAuthorizationRequest.CopyHeaders = list;
            var upgradeResult = _leaf.Send(getUpgradeCopyAuthorizationRequest);
            var getUpgradeAuthorizationResult = GetUpgradeAuthorizationResult.Convert(upgradeResult);
            if (getUpgradeAuthorizationResult != null)
            {
                authorization = getUpgradeAuthorizationResult.Authorization;
            }
            return authorization;
        }
    }
}