using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.BL.DTO;
using Tango.Core;
using Tango.Core.DI;
using Tango.Integration.ExternalBridge;
using Tango.Integration.Operation;
using Tango.PPC.Common.Build;
using Tango.PPC.Common.Connection;
using Tango.PPC.Common.ExternalBridge;
using Tango.PPC.Shared.Jobs;

namespace Tango.PPC.Common.RemoteJob
{
    [TangoCreateWhenRegistered]
    public class DefaultRemoteJobService : IRemoteJobService, IExternalBridgeRequestHandler
    {
        private class RunningJobUpdateClient
        {
            public String Token { get; set; }
            public ExternalBridgeReceiver Receiver { get; set; }
            public bool JobSent { get; set; }
        }

        private List<RunningJobUpdateClient> _clients;
        private JobHandler _handler;
        private JobDTO _currentJobDTO;
        private String _rmlName;
        private ProcessParametersTableDTO _currentJobProcessParameters;
        private IRemoteJobInputOutputProvider _inputOutputProvider;
        private IBuildProvider _buildProvider;

        public bool Enabled { get; set; } = true;

        private IMachineProvider MachineProvider { get; set; }

        public DefaultRemoteJobService(IPPCExternalBridgeService externalBridge, IMachineProvider machineProvider, IBuildProvider buildProvider)
        {
            externalBridge.RegisterRequestHandler(this);

            MachineProvider = machineProvider;

            _buildProvider = buildProvider;

            _clients = new List<RunningJobUpdateClient>();
            MachineProvider.MachineOperator.PrintingStarted += MachineOperator_PrintingStarted;
        }

        private async void MachineOperator_PrintingStarted(object sender, Integration.Operation.PrintingEventArgs e)
        {
            _handler = e.JobHandler;

            e.JobHandler.StatusChanged += JobHandler_StatusChanged;
            e.JobHandler.Stopped += JobHandler_Stopped;

            _currentJobDTO = JobDTO.FromObservable(e.Job);
            _currentJobProcessParameters = ProcessParametersTableDTO.FromObservable(_handler.ProcessParameters);
            _rmlName = e.Job.Rml.FinalName;

            RemoteJobInputOutput inputOutput = new RemoteJobInputOutput();

            if (_clients.Count > 0 && _buildProvider.MachineType.IsXMachine())
            {
                inputOutput = GetCurrentJobInputOutput();
            }

            foreach (var client in _clients.ToList())
            {
                try
                {
                    RemoteJobProgress progress = new RemoteJobProgress();
                    progress.Stage = RemoteJobStage.Started;
                    progress.JobStatus = _handler.JobStatus;
                    progress.InputOutput = inputOutput;


                    await client.Receiver.SendGenericResponse(new RemoteJobUpdateResponse()
                    {
                        Job = _currentJobDTO,
                        ProcessParameters = _currentJobProcessParameters,
                        Progress = progress,
                        RmlName = _rmlName
                    }, client.Token);

                    client.JobSent = true;
                }
                catch { }
            }
        }

        private async void JobHandler_StatusChanged(object sender, RunningJobStatus e)
        {
            var currentProgress = GetJobProgress(_handler);
            RemoteJobInputOutput inputOutput = new RemoteJobInputOutput();

            if (_clients.Count > 0 && _buildProvider.MachineType.IsXMachine())
            {
                inputOutput = GetCurrentJobInputOutput();
            }

            currentProgress.InputOutput = inputOutput;

            foreach (var client in _clients.ToList())
            {
                if (client.JobSent)
                {
                    try
                    {
                        await client.Receiver.SendGenericResponse(new RemoteJobUpdateResponse()
                        {
                            Progress = currentProgress,
                            RmlName = _rmlName,
                        }, client.Token);
                    }
                    catch { }
                }
                else
                {
                    try
                    {
                        RemoteJobProgress progress = new RemoteJobProgress();
                        progress.Stage = RemoteJobStage.Started;
                        progress.JobStatus = _handler.JobStatus;
                        progress.InputOutput = inputOutput;

                        await client.Receiver.SendGenericResponse(new RemoteJobUpdateResponse()
                        {
                            Job = _currentJobDTO,
                            ProcessParameters = _currentJobProcessParameters,
                            Progress = progress,
                            RmlName = _rmlName
                        }, client.Token);

                        client.JobSent = true;
                    }
                    catch { }
                }
            }
        }

        private async void JobHandler_Stopped(object sender, EventArgs e)
        {
            foreach (var client in _clients.ToList().Where(x => x.JobSent))
            {
                try
                {
                    await client.Receiver.SendGenericResponse(new RemoteJobUpdateResponse()
                    {
                        Progress = GetJobProgress(_handler),
                    }, client.Token);

                    client.JobSent = false;
                }
                catch { }
            }
        }

        private RemoteJobInputOutput GetCurrentJobInputOutput()
        {
            var inputOutput = new RemoteJobInputOutput();

            if (_inputOutputProvider == null && _buildProvider.MachineType.IsXMachine())
            {
                _inputOutputProvider = TangoIOC.Default.GetInstance<IRemoteJobInputOutputProvider>();
            }

            if (_inputOutputProvider != null)
            {
                var i = _inputOutputProvider;

                if (i.CurrentBrushStop != null)
                {
                    var colorSpace = i.CurrentBrushStop.BrushColorSpace;

                    inputOutput.ColorSpace = colorSpace;

                    switch (colorSpace)
                    {
                        case BL.Enumerations.ColorSpaces.Volume:
                            if (i.CurrentBrushStop.LiquidVolumes != null)
                            {
                                foreach (var input in i.CurrentBrushStop.LiquidVolumesOrderedPigmentedForStandardUser.ToList())
                                {
                                    inputOutput.Input.Add(new Tuple<string, string>(input.IdsPack.LiquidType.ShortName, input.Volume.ToString()));
                                }
                            }

                            break;
                        case BL.Enumerations.ColorSpaces.RGB:
                            inputOutput.Input.Add(new Tuple<string, String>("R", i.CurrentBrushStop.Red.ToString()));
                            inputOutput.Input.Add(new Tuple<string, String>("G", i.CurrentBrushStop.Green.ToString()));
                            inputOutput.Input.Add(new Tuple<string, String>("B", i.CurrentBrushStop.Blue.ToString()));
                            break;
                        case BL.Enumerations.ColorSpaces.LAB:
                            inputOutput.Input.Add(new Tuple<string, String>("L", i.CurrentBrushStop.L.ToString("0.00")));
                            inputOutput.Input.Add(new Tuple<string, String>("A", i.CurrentBrushStop.A.ToString("0.00")));
                            inputOutput.Input.Add(new Tuple<string, String>("B", i.CurrentBrushStop.B.ToString("0.00")));
                            break;
                        case BL.Enumerations.ColorSpaces.Catalog:
                            inputOutput.Input.Add(new Tuple<string, String>("Catalog", i.CurrentBrushStop.ColorCatalog.Name));
                            inputOutput.Input.Add(new Tuple<string, String>("Color", i.CurrentBrushStop.ColorCatalogsItem.Name));
                            break;
                        default:
                            break;
                    }

                    try
                    {
                        foreach (var output in i.LiquidOutputs)
                        {
                            inputOutput.Output.Add(new Tuple<string, string>(output.LiquidType.ShortName, output.Volume.ToString()));
                        }
                    }
                    catch
                    {
                        inputOutput.Output.Add(new Tuple<string, string>("C", "N/A"));
                        inputOutput.Output.Add(new Tuple<string, string>("LC", "N/A"));
                        inputOutput.Output.Add(new Tuple<string, string>("M", "N/A"));
                        inputOutput.Output.Add(new Tuple<string, string>("LM", "N/A"));
                        inputOutput.Output.Add(new Tuple<string, string>("Y", "N/A"));
                        inputOutput.Output.Add(new Tuple<string, string>("LY", "N/A"));
                        inputOutput.Output.Add(new Tuple<string, string>("K", "N/A"));
                    }
                }
            }

            return inputOutput;
        }

        private RemoteJobProgress GetJobProgress(JobHandler handler)
        {
            RemoteJobStage stage = RemoteJobStage.Running;

            if (_handler.Status.IsCanceled)
            {
                stage = RemoteJobStage.Aborted;
            }
            else if (_handler.Status.IsCompleted)
            {
                stage = RemoteJobStage.Completed;
            }
            else if (_handler.Status.IsFailed)
            {
                stage = RemoteJobStage.Failed;
            }

            return new RemoteJobProgress()
            {
                Stage = stage,
                JobStatus = handler.JobStatus,
            };
        }

        [ExternalBridgeRequestHandlerMethod(typeof(RemoteJobUpdateRequest), RequestHandlerLoggingMode.LogRequestName)]
        public async Task OnRunningJobUpdateRequest(RemoteJobUpdateRequest request, String token, ExternalBridgeReceiver receiver)
        {
            this.ThrowIfDisabled();

            if (!_clients.ToList().Exists(x => x.Receiver == receiver))
            {
                _clients.Add(new RunningJobUpdateClient()
                {
                    Receiver = receiver,
                    Token = token
                });
            }

            await receiver.SendGenericResponse(new RemoteJobUpdateResponse(), token);
        }

        public void OnReceiverDisconnected(ExternalBridgeReceiver receiver)
        {
            _clients.RemoveAll(x => x.Receiver == receiver);
        }
    }
}