using FluentFTP;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;

namespace AwInitilizer.Procedure.FirmwareBundleUpload
{
    public class FirmwareFtpUploadProcedure : ProcedureBase
    {
        public ErrorType Error { get; set; } = ErrorType.None;

        private ProcedureLog.LogWriter<FirmwareFtpUploadProcedure, LogEvent> LogWriter;

        private readonly static Dictionary<LogEvent, string> ReportDict = new Dictionary<LogEvent, string>()
        {
            { LogEvent.UploadStartWait, "UploadStartWait" },
            { LogEvent.FirmwareUpload, "FirmwareUpload" },
        };

        private readonly static Dictionary<LogEvent, string> LogDict = new Dictionary<LogEvent, string>()
        {
            { LogEvent.UploadStartWait, "Wait restart {0}" },
            { LogEvent.FirmwareUpload, "Firmware Upload {0}" },
        };

        public FirmwareFtpUploadProcedure() : base()
        {
            Name = string.Format("Firmware Upload");
            Content = string.Format("Upload all Firemware");

            LogWriter = new ProcedureLog.LogWriter<FirmwareFtpUploadProcedure, LogEvent>(this)
            {
                ReportPair = ReportDict,
                LogPair = LogDict
            };
        }

        internal override async Task<bool> Run()
        {
            bool response = false;
            int pollingCnt = 0;
            for (pollingCnt = 0; pollingCnt < 56; pollingCnt++)
            {
                await Task.Delay(TimeSpan.FromSeconds(15));
                response = await CheckGetQuertyAction();
                if (response)
                    break;
            }

            LogWriter.Log(string.Format("EVSE connet elapsed minute(s) : {0}, Expect:<14", pollingCnt * 0.25));

            //timeout
            if (pollingCnt >= 56)
            {
                LogWriter.Report(LogEvent.UploadStartWait, "fail", isError: true);
                Error = ErrorType.StartWaitTimeout;

                return false;
            }

            LogWriter.Report(LogEvent.UploadStartWait, "success");


            //upload firmware
            bool result = false;
            for (int tryCnt = 0; tryCnt < 10; tryCnt++)
            {
                result = await UploadWithFtp();
                if (result)
                    break;
                else
                    await Task.Delay(1000);
            }
            if (!result)
            {
                Error = ErrorType.UploadFailed;
                return false;
            }

            //signal Update start
            var signalUpdateResult = await SignalUpdate();
            return result;
        }

        private async Task<bool> UploadWithFtp()
        {
            var updateList = UpdateData.FirmwareUpdateModels;

            //FtpClient client = new FtpClient(ServerIpAddress, "root", "y42j/4cj84");
            FtpClient client = new FtpClient(ServerIpAddress, "vern", "delta");
            try
            {
                var profile = await client.AutoConnectAsync();
                if (profile == null)
                {
                    throw new Exception("profile null");
                }
            }
            catch
            {
                LogWriter.Log($"Ftp Connect failed");
                LogWriter.Report(LogEvent.FirmwareUpload, "fail", isError: true);
                return false;
            }

            for (int modelIndex = 0; modelIndex < updateList.Count; modelIndex++) //foreach (var model in updateList)
            {
                var model = updateList[modelIndex];
                var firmwareFilePath = Path.Combine(Directory.GetCurrentDirectory(), model.FirmwareFileName);
                var remoteFilePath = string.Format("/mnt/{0}", Path.GetFileName(model.FirmwareFileName));
                var status = await client.UploadFileAsync(model.FirmwareFileName, remoteFilePath);

                if(status != FtpStatus.Success)
                {
                    LogWriter.Log($"Firmware {modelIndex} upload failed");
                    LogWriter.Report(LogEvent.FirmwareUpload, "fail", isError: true);
                    return false;
                }
            }
            await client.DisconnectAsync();
            return true;
        }

        private async Task<bool> SignalUpdate()
        {
            var updateList = UpdateData.FirmwareUpdateModels;

            var restClient = new RestSharp.RestClient($"https://{ServerIpAddress}");
            restClient.ConfigureWebRequest((r) => { r.KeepAlive = true; });

            var request = new RestSharp.RestRequest("upgrade_iso_action.php", RestSharp.Method.POST);
            request.AlwaysMultipartFormData = true;
            request.AddHeader("Content-Type", "multipart/form-data");

            request.AddParameter("fw_tag", "iso");
            //request.AddFile("files[]", new byte[0] , "dummy");

            RestSharp.IRestResponse response = await restClient.ExecuteAsync(request);

            if (response.IsSuccessful)
            {
                return true;
            }
            else
            {
                if (response.ErrorException != null)
                {
                    LogWriter.Log(response.ErrorException.Message, isError: true, isDebugLog: true);
                    if (response.ErrorException.InnerException != null)
                    {
                        LogWriter.Log(response.ErrorException.InnerException.Message, isError: true, isDebugLog: true);
                    }

                    LogWriter.Log(response.StatusCode.ToString(), isError: true, isDebugLog: true);
                }
                return false;
            }
        }
    }
}