using Microsoft.WindowsAPICodePack.Net;
using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.BL;
using Tango.Core;
using Tango.Core.DI;
using Tango.Integration.ExternalBridge;
using Tango.PPC.Common.Application;
using Tango.PPC.Common.Connectivity;
using Tango.PPC.Common.ExternalBridge;
using Tango.PPC.Shared.Information;
using Tango.Settings;
using Tango.SystemInfo;

namespace Tango.PPC.Common.SystemInfo
{
    [TangoCreateWhenRegistered]
    public class DefaultSystemInfoService : ExtendedObject, ISystemInfoService, IExternalBridgeRequestHandler
    {
        public bool Enabled { get; set; } = true;

        private List<SystemObjectsCollection> _baseSystemInfo;
        private IPPCApplicationManager _applicationManager;
        private IConnectivityProvider _connectivityProvider;

        public DefaultSystemInfoService(IPPCExternalBridgeService externalBridge, IPPCApplicationManager applicationManager, IConnectivityProvider connectivityProvider)
        {
            _applicationManager = applicationManager;
            _connectivityProvider = connectivityProvider;
            externalBridge.RegisterRequestHandler(this);
        }

        [ExternalBridgeRequestHandlerMethod(typeof(GetMachineInformationRequest), RequestHandlerLoggingMode.LogRequestName)]
        public async Task OnGetMachineInformationRequest(GetMachineInformationRequest request, String token, ExternalBridgeReceiver receiver)
        {
            if (_baseSystemInfo == null) //Create hardware info just once.
            {
                _baseSystemInfo = new List<SystemObjectsCollection>();

                if (!Debugger.IsAttached)
                {
                    _baseSystemInfo = SystemObjectsCollection.Create();
                }
            }

            //Now always update the latest custom objects..
            var system = _baseSystemInfo.ToList();

            //Get the networks that are currently connected to
            var connectedNetwork = NetworkListManager.GetNetworks(NetworkConnectivityLevels.Connected).FirstOrDefault();

            var settings = SettingsManager.Default.GetOrCreate<PPCSettings>();

            var applicationCollection = new SystemObjectsCollection();
            applicationCollection.Name = "Application";
            system.Insert(0, applicationCollection);

            //Application.
            applicationCollection.Objects.Add(new SystemObject()
            {
                Name = "Tango PPC",
                Properties = new List<SystemObjectProperty>()
                                 {
                                     new SystemObjectProperty() { Name = "Version", Value = _applicationManager.VersionAndTag },
                                     new SystemObjectProperty() { Name = "Build Date", Value = _applicationManager.BuildDate },
                                     new SystemObjectProperty() { Name = "Previous Version", Value = settings.PreviousApplicationVersion },
                                     new SystemObjectProperty() { Name = "Firmware Version", Value = _applicationManager.FirmwareVersion.ToStringSafe() },
                                     new SystemObjectProperty() { Name = "Technician Mode", Value = _applicationManager.IsInTechnicianMode.ToStringYesNo() },
                                     new SystemObjectProperty() { Name = "After Update", Value = _applicationManager.IsAfterUpdate.ToStringYesNo() },
                                     new SystemObjectProperty() { Name = "Startup Date", Value = _applicationManager.StartUpDate.ToString() },
                                 },
            });


            //Network.
            if (connectedNetwork != null)
            {
                applicationCollection.Objects.Add(new SystemObject()
                {
                    Name = "Network",
                    Properties = new List<SystemObjectProperty>()
                                 {
                                     new SystemObjectProperty() { Name = "Network Name", Value = connectedNetwork.Name },
                                     new SystemObjectProperty() { Name = "Category", Value = connectedNetwork.Category.ToString() },
                                     new SystemObjectProperty() { Name = "Type", Value = connectedNetwork.Connectivity.ToString() },
                                     new SystemObjectProperty() { Name = "Domain", Value = connectedNetwork.DomainType.ToString() },
                                     new SystemObjectProperty() { Name = "Connected Time", Value = connectedNetwork.ConnectedTime.ToString() },
                                     new SystemObjectProperty() { Name = "Internet Connection", Value = connectedNetwork.IsConnectedToInternet.ToStringYesNo() },
                                 },
                });
            }

            //Settings.
            applicationCollection.Objects.Add(new SystemObject()
            {
                Name = "Settings",
                Properties = new List<SystemObjectProperty>()
                                 {
                                     new SystemObjectProperty() { Name = "Application State", Value = settings.ApplicationState.ToString() },
                                     new SystemObjectProperty() { Name = "Auto Update Check", Value = settings.AutoCheckForUpdates.ToStringYesNo() },
                                     new SystemObjectProperty() { Name = "Auto Update Interval", Value = settings.AutoUpdateCheckInterval.ToString() },
                                     new SystemObjectProperty() { Name = "Automatic Thread Loading", Value = settings.EnableAutomaticThreadLoading.ToStringYesNo() },
                                     new SystemObjectProperty() { Name = "Firmware Logs Enabled", Value = settings.EnableEmbeddedDebugLogs.ToStringYesNo() },
                                     new SystemObjectProperty() { Name = "Emergency Switch Enabled", Value = settings.EnableEmergencyNotifications.ToStringYesNo() },
                                     new SystemObjectProperty() { Name = "Liquid Quantity Validation Enabled", Value = settings.EnableJobLiquidQuantityValidation.ToStringYesNo() },
                                     new SystemObjectProperty() { Name = "Remote Assistance Enabled", Value = settings.EnableRemoteAssistance.ToStringYesNo() },
                                     new SystemObjectProperty() { Name = "Remote Desktop Enabled", Value = settings.EnableRemoteDesktop.ToStringYesNo() },
                                     new SystemObjectProperty() { Name = "Start in Technician Mode", Value = settings.EnableTechnicianModeByDefault.ToStringYesNo() },
                                     new SystemObjectProperty() { Name = "Watchdog Enabled", Value = settings.EnableWatchDog.ToStringYesNo() },
                                     new SystemObjectProperty() { Name = "Job Units Method", Value = settings.JobUnitsMethod.ToString() },
                                     new SystemObjectProperty() { Name = "PowerUp Screen Enabled", Value = settings.DisplayPowerUpScreen.ToStringYesNo() },
                                     new SystemObjectProperty() { Name = "Firmware COM Port", Value = settings.EmbeddedComPort.ToStringOrEmpty() },
                                     new SystemObjectProperty() { Name = "Emergency COM Port", Value = settings.EmergencyComPort.ToStringOrEmpty() },
                                     new SystemObjectProperty() { Name = "Job Upload Method", Value = settings.JobUploadStrategy.ToString() },
                                     new SystemObjectProperty() { Name = "Diagnostics Synchronization", Value = settings.SynchronizeDiagnostics.ToStringYesNo() },
                                     new SystemObjectProperty() { Name = "Jobs Synchronization", Value = settings.SynchronizeJobs.ToStringYesNo() },
                                     new SystemObjectProperty() { Name = "TCP Write Mode", Value = settings.TcpTransportAdapterWriteMode.ToString() },
                                 }.OrderBy(x => x.Name).ToList(),
            });

            await receiver.SendGenericResponse(new GetMachineInformationResponse()
            {
                Package = new InformationPackage()
                {
                    System = system,
                }
            }, token);
        }

        [ExternalBridgeRequestHandlerMethod(typeof(GetMachineCountersRequest), RequestHandlerLoggingMode.LogRequestName)]
        public async Task OnGetMachineCountersRequest(GetMachineCountersRequest request, String token, ExternalBridgeReceiver receiver)
        {
            var counters = await GetCounters();

            var response = new GetMachineCountersResponse();
            response.TotalDyeTime = counters.Item1;
            response.TotalDyeMeters = counters.Item2;

            await receiver.SendGenericResponse(response, token);
        }

        private async Task<Tuple<TimeSpan, int>> GetCounters()
        {
            using (ObservablesContext db = ObservablesContext.CreateDefault())
            {
                var jobRuns = await db.JobRuns.Select(x => new { x.StartDate, x.EndDate, x.EndPosition }).ToListAsync();

                TimeSpan totalDyeTime = TimeSpan.FromHours(jobRuns.Select(x => x.EndDate - x.StartDate).Sum(x => x.TotalHours));

                int meters = (int)jobRuns.Select(x => x.EndPosition).Sum();

                return new Tuple<TimeSpan, int>(totalDyeTime, meters);
            }
        }

        public void OnReceiverDisconnected(ExternalBridgeReceiver receiver)
        {

        }
    }
}