using MediaBrowser.Common;
using MediaBrowser.Common.Configuration;
using MediaBrowser.Common.Net;
using MediaBrowser.Common.Security;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Drawing;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.LiveTv;
using MediaBrowser.Controller.MediaEncoding;
using MediaBrowser.Controller.Providers;
using MediaBrowser.Model.Dto;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Events;
using MediaBrowser.Model.LiveTv;
using MediaBrowser.Model.Logging;
using MediaBrowser.Model.Serialization;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Xml;
using MediaBrowser.Model.IO;
using MediaBrowser.Common.Events;
using MediaBrowser.Common.Extensions;
using MediaBrowser.Common.Progress;
using MediaBrowser.Controller;
using MediaBrowser.Controller.Dto;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.TV;
using MediaBrowser.Controller.IO;
using MediaBrowser.Model.Configuration;
using MediaBrowser.Model.Diagnostics;
using MediaBrowser.Model.System;
using MediaBrowser.Model.Threading;
using MediaBrowser.Model.Extensions;
using MediaBrowser.Model.Querying;

namespace Emby.Server.Implementations.LiveTv.EmbyTV
{
    public class EmbyTV : ILiveTvService, ISupportsDirectStreamProvider, ISupportsNewTimerIds, IDisposable
    {
        private readonly IServerApplicationHost _appHost;
        private readonly ILogger _logger;
        private readonly IHttpClient _httpClient;
        private readonly IServerConfigurationManager _config;
        private readonly IJsonSerializer _jsonSerializer;

        private readonly ItemDataProvider<SeriesTimerInfo> _seriesTimerProvider;
        private readonly TimerManager _timerProvider;

        private readonly LiveTvManager _liveTvManager;
        private readonly IFileSystem _fileSystem;

        private readonly ILibraryMonitor _libraryMonitor;
        private readonly ILibraryManager _libraryManager;
        private readonly IProviderManager _providerManager;
        private readonly IMediaEncoder _mediaEncoder;
        private readonly IProcessFactory _processFactory;
        private readonly ISystemEvents _systemEvents;

        public static EmbyTV Current;

        public event EventHandler DataSourceChanged;
        public event EventHandler<RecordingStatusChangedEventArgs> RecordingStatusChanged;

        private readonly ConcurrentDictionary<string, ActiveRecordingInfo> _activeRecordings =
            new ConcurrentDictionary<string, ActiveRecordingInfo>(StringComparer.OrdinalIgnoreCase);

        public EmbyTV(IServerApplicationHost appHost, ILogger logger, IJsonSerializer jsonSerializer, IHttpClient httpClient, IServerConfigurationManager config, ILiveTvManager liveTvManager, IFileSystem fileSystem, ILibraryManager libraryManager, ILibraryMonitor libraryMonitor, IProviderManager providerManager, IMediaEncoder mediaEncoder, ITimerFactory timerFactory, IProcessFactory processFactory, ISystemEvents systemEvents)
        {
            Current = this;

            _appHost = appHost;
            _logger = logger;
            _httpClient = httpClient;
            _config = config;
            _fileSystem = fileSystem;
            _libraryManager = libraryManager;
            _libraryMonitor = libraryMonitor;
            _providerManager = providerManager;
            _mediaEncoder = mediaEncoder;
            _processFactory = processFactory;
            _systemEvents = systemEvents;
            _liveTvManager = (LiveTvManager)liveTvManager;
            _jsonSerializer = jsonSerializer;

            _seriesTimerProvider = new SeriesTimerManager(fileSystem, jsonSerializer, _logger, Path.Combine(DataPath, "seriestimers"));
            _timerProvider = new TimerManager(fileSystem, jsonSerializer, _logger, Path.Combine(DataPath, "timers"), _logger, timerFactory);
            _timerProvider.TimerFired += _timerProvider_TimerFired;

            _config.NamedConfigurationUpdated += _config_NamedConfigurationUpdated;
        }

        private void _config_NamedConfigurationUpdated(object sender, ConfigurationUpdateEventArgs e)
        {
            if (string.Equals(e.Key, "livetv", StringComparison.OrdinalIgnoreCase))
            {
                OnRecordingFoldersChanged();
            }
        }

        public void Start()
        {
            _timerProvider.RestartTimers();

            _systemEvents.Resume += _systemEvents_Resume;
            CreateRecordingFolders();
        }

        private void _systemEvents_Resume(object sender, EventArgs e)
        {
            _timerProvider.RestartTimers();
        }

        private void OnRecordingFoldersChanged()
        {
            CreateRecordingFolders();
        }

        internal void CreateRecordingFolders()
        {
            try
            {
                CreateRecordingFoldersInternal();
            }
            catch (Exception ex)
            {
                _logger.ErrorException("Error creating recording folders", ex);
            }
        }

        internal void CreateRecordingFoldersInternal()
        {
            var recordingFolders = GetRecordingFolders();

            var virtualFolders = _libraryManager.GetVirtualFolders()
                .ToList();

            var allExistingPaths = virtualFolders.SelectMany(i => i.Locations).ToList();

            var pathsAdded = new List<string>();

            foreach (var recordingFolder in recordingFolders)
            {
                var pathsToCreate = recordingFolder.Locations
                    .Where(i => !allExistingPaths.Any(p => _fileSystem.AreEqual(p, i)))
                    .ToList();

                if (pathsToCreate.Count == 0)
                {
                    continue;
                }

                var mediaPathInfos = pathsToCreate.Select(i => new MediaPathInfo { Path = i }).ToArray();

                var libraryOptions = new LibraryOptions
                {
                    PathInfos = mediaPathInfos
                };
                try
                {
                    _libraryManager.AddVirtualFolder(recordingFolder.Name, recordingFolder.CollectionType, libraryOptions, true);
                }
                catch (Exception ex)
                {
                    _logger.ErrorException("Error creating virtual folder", ex);
                }

                pathsAdded.AddRange(pathsToCreate);
            }

            var config = GetConfiguration();

            var pathsToRemove = config.MediaLocationsCreated
                .Except(recordingFolders.SelectMany(i => i.Locations))
                .ToList();

            if (pathsAdded.Count > 0 || pathsToRemove.Count > 0)
            {
                pathsAdded.InsertRange(0, config.MediaLocationsCreated);
                config.MediaLocationsCreated = pathsAdded.Except(pathsToRemove).Distinct(StringComparer.OrdinalIgnoreCase).ToArray();
                _config.SaveConfiguration("livetv", config);
            }

            foreach (var path in pathsToRemove)
            {
                RemovePathFromLibrary(path);
            }
        }

        private void RemovePathFromLibrary(string path)
        {
            _logger.Debug("Removing path from library: {0}", path);

            var requiresRefresh = false;
            var virtualFolders = _libraryManager.GetVirtualFolders()
               .ToList();

            foreach (var virtualFolder in virtualFolders)
            {
                if (!virtualFolder.Locations.Contains(path, StringComparer.OrdinalIgnoreCase))
                {
                    continue;
                }

                if (virtualFolder.Locations.Length == 1)
                {
                    // remove entire virtual folder
                    try
                    {
                        _libraryManager.RemoveVirtualFolder(virtualFolder.Name, true);
                    }
                    catch (Exception ex)
                    {
                        _logger.ErrorException("Error removing virtual folder", ex);
                    }
                }
                else
                {
                    try
                    {
                        _libraryManager.RemoveMediaPath(virtualFolder.Name, path);
                        requiresRefresh = true;
                    }
                    catch (Exception ex)
                    {
                        _logger.ErrorException("Error removing media path", ex);
                    }
                }
            }

            if (requiresRefresh)
            {
                _libraryManager.ValidateMediaLibrary(new SimpleProgress<Double>(), CancellationToken.None);
            }
        }

        public string Name
        {
            get { return "Emby"; }
        }

        public string DataPath
        {
            get { return Path.Combine(_config.CommonApplicationPaths.DataPath, "livetv"); }
        }

        private string DefaultRecordingPath
        {
            get
            {
                return Path.Combine(DataPath, "recordings");
            }
        }

        private string RecordingPath
        {
            get
            {
                var path = GetConfiguration().RecordingPath;

                return string.IsNullOrWhiteSpace(path)
                    ? DefaultRecordingPath
                    : path;
            }
        }

        public string HomePageUrl
        {
            get { return "http://emby.media"; }
        }

        public async Task<LiveTvServiceStatusInfo> GetStatusInfoAsync(CancellationToken cancellationToken)
        {
            var status = new LiveTvServiceStatusInfo();
            var list = new List<LiveTvTunerInfo>();

            foreach (var hostInstance in _liveTvManager.TunerHosts)
            {
                try
                {
                    var tuners = await hostInstance.GetTunerInfos(cancellationToken).ConfigureAwait(false);

                    list.AddRange(tuners);
                }
                catch (Exception ex)
                {
                    _logger.ErrorException("Error getting tuners", ex);
                }
            }

            status.Tuners = list;
            status.Status = LiveTvServiceStatus.Ok;
            status.Version = _appHost.ApplicationVersion.ToString();
            status.IsVisible = false;
            return status;
        }

        public async Task RefreshSeriesTimers(CancellationToken cancellationToken, IProgress<double> progress)
        {
            var seriesTimers = await GetSeriesTimersAsync(cancellationToken).ConfigureAwait(false);

            foreach (var timer in seriesTimers)
            {
                await UpdateTimersForSeriesTimer(timer, false, true).ConfigureAwait(false);
            }
        }

        public async Task RefreshTimers(CancellationToken cancellationToken, IProgress<double> progress)
        {
            var timers = await GetTimersAsync(cancellationToken).ConfigureAwait(false);

            var tempChannelCache = new Dictionary<string, LiveTvChannel>();

            foreach (var timer in timers)
            {
                if (DateTime.UtcNow > timer.EndDate && !_activeRecordings.ContainsKey(timer.Id))
                {
                    OnTimerOutOfDate(timer);
                    continue;
                }

                if (string.IsNullOrWhiteSpace(timer.ProgramId) || string.IsNullOrWhiteSpace(timer.ChannelId))
                {
                    continue;
                }

                var program = GetProgramInfoFromCache(timer);
                if (program == null)
                {
                    OnTimerOutOfDate(timer);
                    continue;
                }

                CopyProgramInfoToTimerInfo(program, timer, tempChannelCache);
                _timerProvider.Update(timer);
            }
        }

        private void OnTimerOutOfDate(TimerInfo timer)
        {
            _timerProvider.Delete(timer);
        }

        private async Task<IEnumerable<ChannelInfo>> GetChannelsAsync(bool enableCache, CancellationToken cancellationToken)
        {
            var list = new List<ChannelInfo>();

            foreach (var hostInstance in _liveTvManager.TunerHosts)
            {
                try
                {
                    var channels = await hostInstance.GetChannels(enableCache, cancellationToken).ConfigureAwait(false);

                    list.AddRange(channels);
                }
                catch (Exception ex)
                {
                    _logger.ErrorException("Error getting channels", ex);
                }
            }

            foreach (var provider in GetListingProviders())
            {
                var enabledChannels = list
                    .Where(i => IsListingProviderEnabledForTuner(provider.Item2, i.TunerHostId))
                    .ToList();

                if (enabledChannels.Count > 0)
                {
                    try
                    {
                        await AddMetadata(provider.Item1, provider.Item2, enabledChannels, enableCache, cancellationToken).ConfigureAwait(false);
                    }
                    catch (NotSupportedException)
                    {

                    }
                    catch (Exception ex)
                    {
                        _logger.ErrorException("Error adding metadata", ex);
                    }
                }
            }

            return list;
        }

        private async Task AddMetadata(IListingsProvider provider, ListingsProviderInfo info, List<ChannelInfo> tunerChannels, bool enableCache, CancellationToken cancellationToken)
        {
            var epgChannels = await GetEpgChannels(provider, info, enableCache, cancellationToken).ConfigureAwait(false);

            foreach (var tunerChannel in tunerChannels)
            {
                var epgChannel = GetEpgChannelFromTunerChannel(info, tunerChannel, epgChannels);

                if (epgChannel != null)
                {
                    if (!string.IsNullOrWhiteSpace(epgChannel.Name))
                    {
                        //tunerChannel.Name = epgChannel.Name;
                    }
                    if (!string.IsNullOrWhiteSpace(epgChannel.ImageUrl))
                    {
                        tunerChannel.ImageUrl = epgChannel.ImageUrl;
                        tunerChannel.HasImage = true;
                    }
                }
            }
        }

        private readonly ConcurrentDictionary<string, List<ChannelInfo>> _epgChannels =
            new ConcurrentDictionary<string, List<ChannelInfo>>(StringComparer.OrdinalIgnoreCase);

        private async Task<List<ChannelInfo>> GetEpgChannels(IListingsProvider provider, ListingsProviderInfo info, bool enableCache, CancellationToken cancellationToken)
        {
            List<ChannelInfo> result;
            if (!enableCache || !_epgChannels.TryGetValue(info.Id, out result))
            {
                result = await provider.GetChannels(info, cancellationToken).ConfigureAwait(false);

                foreach (var channel in result)
                {
                    _logger.Info("Found epg channel in {0} {1} {2} {3}", provider.Name, info.ListingsId, channel.Name, channel.Id);
                }

                _epgChannels.AddOrUpdate(info.Id, result, (k, v) => result);
            }

            return result;
        }

        private async Task<ChannelInfo> GetEpgChannelFromTunerChannel(IListingsProvider provider, ListingsProviderInfo info, ChannelInfo tunerChannel, CancellationToken cancellationToken)
        {
            var epgChannels = await GetEpgChannels(provider, info, true, cancellationToken).ConfigureAwait(false);

            return GetEpgChannelFromTunerChannel(info, tunerChannel, epgChannels);
        }

        private string GetMappedChannel(string channelId, NameValuePair[] mappings)
        {
            foreach (NameValuePair mapping in mappings)
            {
                if (StringHelper.EqualsIgnoreCase(mapping.Name, channelId))
                {
                    return mapping.Value;
                }
            }
            return channelId;
        }

        private ChannelInfo GetEpgChannelFromTunerChannel(ListingsProviderInfo info, ChannelInfo tunerChannel, List<ChannelInfo> epgChannels)
        {
            return GetEpgChannelFromTunerChannel(info.ChannelMappings, tunerChannel, epgChannels);
        }

        public ChannelInfo GetEpgChannelFromTunerChannel(NameValuePair[] mappings, ChannelInfo tunerChannel, List<ChannelInfo> epgChannels)
        {
            if (!string.IsNullOrWhiteSpace(tunerChannel.Id))
            {
                var mappedTunerChannelId = GetMappedChannel(tunerChannel.Id, mappings);

                if (string.IsNullOrWhiteSpace(mappedTunerChannelId))
                {
                    mappedTunerChannelId = tunerChannel.Id;
                }

                var channel = epgChannels.FirstOrDefault(i => string.Equals(mappedTunerChannelId, i.Id, StringComparison.OrdinalIgnoreCase));

                if (channel != null)
                {
                    return channel;
                }
            }

            if (!string.IsNullOrWhiteSpace(tunerChannel.TunerChannelId))
            {
                var tunerChannelId = tunerChannel.TunerChannelId;
                if (tunerChannelId.IndexOf(".json.schedulesdirect.org", StringComparison.OrdinalIgnoreCase) != -1)
                {
                    tunerChannelId = tunerChannelId.Replace(".json.schedulesdirect.org", string.Empty, StringComparison.OrdinalIgnoreCase).TrimStart('I');
                }

                var mappedTunerChannelId = GetMappedChannel(tunerChannelId, mappings);

                if (string.IsNullOrWhiteSpace(mappedTunerChannelId))
                {
                    mappedTunerChannelId = tunerChannelId;
                }

                var channel = epgChannels.FirstOrDefault(i => string.Equals(mappedTunerChannelId, i.Id, StringComparison.OrdinalIgnoreCase));

                if (channel != null)
                {
                    return channel;
                }
            }

            if (!string.IsNullOrWhiteSpace(tunerChannel.Number))
            {
                var tunerChannelNumber = GetMappedChannel(tunerChannel.Number, mappings);

                if (string.IsNullOrWhiteSpace(tunerChannelNumber))
                {
                    tunerChannelNumber = tunerChannel.Number;
                }

                var channel = epgChannels.FirstOrDefault(i => string.Equals(tunerChannelNumber, i.Number, StringComparison.OrdinalIgnoreCase));

                if (channel != null)
                {
                    return channel;
                }
            }

            if (!string.IsNullOrWhiteSpace(tunerChannel.Name))
            {
                var normalizedName = NormalizeName(tunerChannel.Name);

                var channel = epgChannels.FirstOrDefault(i => string.Equals(normalizedName, NormalizeName(i.Name ?? string.Empty), StringComparison.OrdinalIgnoreCase));

                if (channel != null)
                {
                    return channel;
                }
            }

            return null;
        }

        private string NormalizeName(string value)
        {
            return value.Replace(" ", string.Empty).Replace("-", string.Empty);
        }

        public async Task<List<ChannelInfo>> GetChannelsForListingsProvider(ListingsProviderInfo listingsProvider, CancellationToken cancellationToken)
        {
            var list = new List<ChannelInfo>();

            foreach (var hostInstance in _liveTvManager.TunerHosts)
            {
                try
                {
                    var channels = await hostInstance.GetChannels(false, cancellationToken).ConfigureAwait(false);

                    list.AddRange(channels);
                }
                catch (Exception ex)
                {
                    _logger.ErrorException("Error getting channels", ex);
                }
            }

            return list
                .Where(i => IsListingProviderEnabledForTuner(listingsProvider, i.TunerHostId))
                .ToList();
        }

        public Task<IEnumerable<ChannelInfo>> GetChannelsAsync(CancellationToken cancellationToken)
        {
            return GetChannelsAsync(false, cancellationToken);
        }

        public Task CancelSeriesTimerAsync(string timerId, CancellationToken cancellationToken)
        {
            var timers = _timerProvider
                .GetAll()
                .Where(i => string.Equals(i.SeriesTimerId, timerId, StringComparison.OrdinalIgnoreCase))
                .ToList();

            foreach (var timer in timers)
            {
                CancelTimerInternal(timer.Id, true);
            }

            var remove = _seriesTimerProvider.GetAll().FirstOrDefault(r => string.Equals(r.Id, timerId, StringComparison.OrdinalIgnoreCase));
            if (remove != null)
            {
                _seriesTimerProvider.Delete(remove);
            }
            return Task.FromResult(true);
        }

        private void CancelTimerInternal(string timerId, bool isSeriesCancelled)
        {
            var timer = _timerProvider.GetTimer(timerId);
            if (timer != null)
            {
                timer.Status = RecordingStatus.Cancelled;

                if (string.IsNullOrWhiteSpace(timer.SeriesTimerId) || isSeriesCancelled)
                {
                    _timerProvider.Delete(timer);
                }
                else
                {
                    _timerProvider.AddOrUpdate(timer, false);
                }
            }
            ActiveRecordingInfo activeRecordingInfo;

            if (_activeRecordings.TryGetValue(timerId, out activeRecordingInfo))
            {
                activeRecordingInfo.Timer = timer;
                activeRecordingInfo.CancellationTokenSource.Cancel();
            }
        }

        public Task CancelTimerAsync(string timerId, CancellationToken cancellationToken)
        {
            CancelTimerInternal(timerId, false);
            return Task.FromResult(true);
        }

        public Task DeleteRecordingAsync(string recordingId, CancellationToken cancellationToken)
        {
            return Task.FromResult(true);
        }

        public Task CreateSeriesTimerAsync(SeriesTimerInfo info, CancellationToken cancellationToken)
        {
            throw new NotImplementedException();
        }

        public Task CreateTimerAsync(TimerInfo info, CancellationToken cancellationToken)
        {
            throw new NotImplementedException();
        }

        public Task<string> CreateTimer(TimerInfo timer, CancellationToken cancellationToken)
        {
            var existingTimer = string.IsNullOrWhiteSpace(timer.ProgramId) ?
                null :
                _timerProvider.GetTimerByProgramId(timer.ProgramId);

            if (existingTimer != null)
            {
                if (existingTimer.Status == RecordingStatus.Cancelled ||
                    existingTimer.Status == RecordingStatus.Completed)
                {
                    existingTimer.Status = RecordingStatus.New;
                    existingTimer.IsManual = true;
                    _timerProvider.Update(existingTimer);
                    return Task.FromResult(existingTimer.Id);
                }
                else
                {
                    throw new ArgumentException("A scheduled recording already exists for this program.");
                }
            }

            timer.Id = Guid.NewGuid().ToString("N");

            LiveTvProgram programInfo = null;

            if (!string.IsNullOrWhiteSpace(timer.ProgramId))
            {
                programInfo = GetProgramInfoFromCache(timer);
            }
            if (programInfo == null)
            {
                _logger.Info("Unable to find program with Id {0}. Will search using start date", timer.ProgramId);
                programInfo = GetProgramInfoFromCache(timer.ChannelId, timer.StartDate);
            }

            if (programInfo != null)
            {
                CopyProgramInfoToTimerInfo(programInfo, timer);
            }

            timer.IsManual = true;
            _timerProvider.Add(timer);
            return Task.FromResult(timer.Id);
        }

        public async Task<string> CreateSeriesTimer(SeriesTimerInfo info, CancellationToken cancellationToken)
        {
            info.Id = Guid.NewGuid().ToString("N");

            // populate info.seriesID
            var program = GetProgramInfoFromCache(info.ProgramId);

            if (program != null)
            {
                info.SeriesId = program.ExternalSeriesId;
            }
            else
            {
                throw new InvalidOperationException("SeriesId for program not found");
            }

            // If any timers have already been manually created, make sure they don't get cancelled
            var existingTimers = (await GetTimersAsync(CancellationToken.None).ConfigureAwait(false))
                .Where(i =>
                {
                    if (string.Equals(i.ProgramId, info.ProgramId, StringComparison.OrdinalIgnoreCase) && !string.IsNullOrWhiteSpace(info.ProgramId))
                    {
                        return true;
                    }

                    if (string.Equals(i.SeriesId, info.SeriesId, StringComparison.OrdinalIgnoreCase) && !string.IsNullOrWhiteSpace(info.SeriesId))
                    {
                        return true;
                    }

                    return false;
                })
                .ToList();

            _seriesTimerProvider.Add(info);

            foreach (var timer in existingTimers)
            {
                timer.SeriesTimerId = info.Id;
                timer.IsManual = true;

                _timerProvider.AddOrUpdate(timer, false);
            }

            await UpdateTimersForSeriesTimer(info, true, false).ConfigureAwait(false);

            return info.Id;
        }

        public async Task UpdateSeriesTimerAsync(SeriesTimerInfo info, CancellationToken cancellationToken)
        {
            var instance = _seriesTimerProvider.GetAll().FirstOrDefault(i => string.Equals(i.Id, info.Id, StringComparison.OrdinalIgnoreCase));

            if (instance != null)
            {
                instance.ChannelId = info.ChannelId;
                instance.Days = info.Days;
                instance.EndDate = info.EndDate;
                instance.IsPostPaddingRequired = info.IsPostPaddingRequired;
                instance.IsPrePaddingRequired = info.IsPrePaddingRequired;
                instance.PostPaddingSeconds = info.PostPaddingSeconds;
                instance.PrePaddingSeconds = info.PrePaddingSeconds;
                instance.Priority = info.Priority;
                instance.RecordAnyChannel = info.RecordAnyChannel;
                instance.RecordAnyTime = info.RecordAnyTime;
                instance.RecordNewOnly = info.RecordNewOnly;
                instance.SkipEpisodesInLibrary = info.SkipEpisodesInLibrary;
                instance.KeepUpTo = info.KeepUpTo;
                instance.KeepUntil = info.KeepUntil;
                instance.StartDate = info.StartDate;

                _seriesTimerProvider.Update(instance);

                await UpdateTimersForSeriesTimer(instance, true, true).ConfigureAwait(false);
            }
        }

        public Task UpdateTimerAsync(TimerInfo updatedTimer, CancellationToken cancellationToken)
        {
            var existingTimer = _timerProvider.GetTimer(updatedTimer.Id);

            if (existingTimer == null)
            {
                throw new ResourceNotFoundException();
            }

            // Only update if not currently active
            ActiveRecordingInfo activeRecordingInfo;
            if (!_activeRecordings.TryGetValue(updatedTimer.Id, out activeRecordingInfo))
            {
                existingTimer.PrePaddingSeconds = updatedTimer.PrePaddingSeconds;
                existingTimer.PostPaddingSeconds = updatedTimer.PostPaddingSeconds;
                existingTimer.IsPostPaddingRequired = updatedTimer.IsPostPaddingRequired;
                existingTimer.IsPrePaddingRequired = updatedTimer.IsPrePaddingRequired;

                _timerProvider.Update(existingTimer);
            }

            return Task.FromResult(true);
        }

        private void UpdateExistingTimerWithNewMetadata(TimerInfo existingTimer, TimerInfo updatedTimer)
        {
            // Update the program info but retain the status
            existingTimer.ChannelId = updatedTimer.ChannelId;
            existingTimer.CommunityRating = updatedTimer.CommunityRating;
            existingTimer.EndDate = updatedTimer.EndDate;
            existingTimer.EpisodeNumber = updatedTimer.EpisodeNumber;
            existingTimer.EpisodeTitle = updatedTimer.EpisodeTitle;
            existingTimer.Genres = updatedTimer.Genres;
            existingTimer.HomePageUrl = updatedTimer.HomePageUrl;
            existingTimer.IsKids = updatedTimer.IsKids;
            existingTimer.IsNews = updatedTimer.IsNews;
            existingTimer.IsMovie = updatedTimer.IsMovie;
            existingTimer.IsSeries = updatedTimer.IsSeries;
            existingTimer.IsLive = updatedTimer.IsLive;
            existingTimer.IsPremiere = updatedTimer.IsPremiere;
            existingTimer.IsProgramSeries = updatedTimer.IsProgramSeries;
            existingTimer.IsRepeat = updatedTimer.IsRepeat;
            existingTimer.IsSports = updatedTimer.IsSports;
            existingTimer.Name = updatedTimer.Name;
            existingTimer.OfficialRating = updatedTimer.OfficialRating;
            existingTimer.OriginalAirDate = updatedTimer.OriginalAirDate;
            existingTimer.Overview = updatedTimer.Overview;
            existingTimer.ProductionYear = updatedTimer.ProductionYear;
            existingTimer.ProgramId = updatedTimer.ProgramId;
            existingTimer.SeasonNumber = updatedTimer.SeasonNumber;
            existingTimer.StartDate = updatedTimer.StartDate;
            existingTimer.ShowId = updatedTimer.ShowId;
        }

        public Task<ImageStream> GetChannelImageAsync(string channelId, CancellationToken cancellationToken)
        {
            throw new NotImplementedException();
        }

        public Task<ImageStream> GetRecordingImageAsync(string recordingId, CancellationToken cancellationToken)
        {
            throw new NotImplementedException();
        }

        public Task<ImageStream> GetProgramImageAsync(string programId, string channelId, CancellationToken cancellationToken)
        {
            throw new NotImplementedException();
        }

        public async Task<IEnumerable<RecordingInfo>> GetRecordingsAsync(CancellationToken cancellationToken)
        {
            return new List<RecordingInfo>();
        }

        public string GetActiveRecordingPath(string id)
        {
            ActiveRecordingInfo info;

            if (_activeRecordings.TryGetValue(id, out info))
            {
                return info.Path;
            }
            return null;
        }

        public IEnumerable<ActiveRecordingInfo> GetAllActiveRecordings()
        {
            return _activeRecordings.Values.Where(i => i.Timer.Status == RecordingStatus.InProgress && !i.CancellationTokenSource.IsCancellationRequested);
        }

        public ActiveRecordingInfo GetActiveRecordingInfo(string path)
        {
            if (string.IsNullOrWhiteSpace(path))
            {
                return null;
            }

            foreach (var recording in _activeRecordings.Values)
            {
                if (string.Equals(recording.Path, path, StringComparison.Ordinal) && !recording.CancellationTokenSource.IsCancellationRequested)
                {
                    var timer = recording.Timer;
                    if (timer.Status != RecordingStatus.InProgress)
                    {
                        return null;
                    }
                    return recording;
                }
            }
            return null;
        }

        public Task<IEnumerable<TimerInfo>> GetTimersAsync(CancellationToken cancellationToken)
        {
            var excludeStatues = new List<RecordingStatus>
            {
                RecordingStatus.Completed
            };

            var timers = _timerProvider.GetAll()
                .Where(i => !excludeStatues.Contains(i.Status));

            return Task.FromResult(timers);
        }

        public Task<SeriesTimerInfo> GetNewTimerDefaultsAsync(CancellationToken cancellationToken, ProgramInfo program = null)
        {
            var config = GetConfiguration();

            var defaults = new SeriesTimerInfo()
            {
                PostPaddingSeconds = Math.Max(config.PostPaddingSeconds, 0),
                PrePaddingSeconds = Math.Max(config.PrePaddingSeconds, 0),
                RecordAnyChannel = false,
                RecordAnyTime = true,
                RecordNewOnly = true,

                Days = new List<DayOfWeek>
                {
                    DayOfWeek.Sunday,
                    DayOfWeek.Monday,
                    DayOfWeek.Tuesday,
                    DayOfWeek.Wednesday,
                    DayOfWeek.Thursday,
                    DayOfWeek.Friday,
                    DayOfWeek.Saturday
                }
            };

            if (program != null)
            {
                defaults.SeriesId = program.SeriesId;
                defaults.ProgramId = program.Id;
                defaults.RecordNewOnly = !program.IsRepeat;
            }

            defaults.SkipEpisodesInLibrary = defaults.RecordNewOnly;
            defaults.KeepUntil = KeepUntil.UntilDeleted;

            return Task.FromResult(defaults);
        }

        public Task<IEnumerable<SeriesTimerInfo>> GetSeriesTimersAsync(CancellationToken cancellationToken)
        {
            return Task.FromResult((IEnumerable<SeriesTimerInfo>)_seriesTimerProvider.GetAll());
        }

        private bool IsListingProviderEnabledForTuner(ListingsProviderInfo info, string tunerHostId)
        {
            if (info.EnableAllTuners)
            {
                return true;
            }

            if (string.IsNullOrWhiteSpace(tunerHostId))
            {
                throw new ArgumentNullException("tunerHostId");
            }

            return info.EnabledTuners.Contains(tunerHostId, StringComparer.OrdinalIgnoreCase);
        }

        public async Task<IEnumerable<ProgramInfo>> GetProgramsAsync(string channelId, DateTime startDateUtc, DateTime endDateUtc, CancellationToken cancellationToken)
        {
            var channels = await GetChannelsAsync(true, cancellationToken).ConfigureAwait(false);
            var channel = channels.First(i => string.Equals(i.Id, channelId, StringComparison.OrdinalIgnoreCase));

            foreach (var provider in GetListingProviders())
            {
                if (!IsListingProviderEnabledForTuner(provider.Item2, channel.TunerHostId))
                {
                    _logger.Debug("Skipping getting programs for channel {0}-{1} from {2}-{3}, because it's not enabled for this tuner.", channel.Number, channel.Name, provider.Item1.Name, provider.Item2.ListingsId ?? string.Empty);
                    continue;
                }

                _logger.Debug("Getting programs for channel {0}-{1} from {2}-{3}", channel.Number, channel.Name, provider.Item1.Name, provider.Item2.ListingsId ?? string.Empty);

                var epgChannel = await GetEpgChannelFromTunerChannel(provider.Item1, provider.Item2, channel, cancellationToken).ConfigureAwait(false);

                List<ProgramInfo> programs;

                if (epgChannel == null)
                {
                    _logger.Debug("EPG channel not found for tuner channel {0}-{1} from {2}-{3}", channel.Number, channel.Name, provider.Item1.Name, provider.Item2.ListingsId ?? string.Empty);
                    programs = new List<ProgramInfo>();
                }
                else
                {
                    programs = (await provider.Item1.GetProgramsAsync(provider.Item2, epgChannel.Id, startDateUtc, endDateUtc, cancellationToken)
                           .ConfigureAwait(false)).ToList();
                }

                // Replace the value that came from the provider with a normalized value
                foreach (var program in programs)
                {
                    program.ChannelId = channelId;

                    if (provider.Item2.EnableNewProgramIds)
                    {
                        program.Id += "_" + channelId;
                    }
                }

                if (programs.Count > 0)
                {
                    return programs;
                }
            }

            return new List<ProgramInfo>();
        }

        private List<Tuple<IListingsProvider, ListingsProviderInfo>> GetListingProviders()
        {
            return GetConfiguration().ListingProviders
                .Select(i =>
                {
                    var provider = _liveTvManager.ListingProviders.FirstOrDefault(l => string.Equals(l.Type, i.Type, StringComparison.OrdinalIgnoreCase));

                    return provider == null ? null : new Tuple<IListingsProvider, ListingsProviderInfo>(provider, i);
                })
                .Where(i => i != null)
                .ToList();
        }

        public Task<MediaSourceInfo> GetRecordingStream(string recordingId, string streamId, CancellationToken cancellationToken)
        {
            throw new NotImplementedException();
        }

        private readonly SemaphoreSlim _liveStreamsSemaphore = new SemaphoreSlim(1, 1);
        private readonly List<ILiveStream> _liveStreams = new List<ILiveStream>();

        public async Task<MediaSourceInfo> GetChannelStream(string channelId, string streamId, CancellationToken cancellationToken)
        {
            var result = await GetChannelStreamWithDirectStreamProvider(channelId, streamId, cancellationToken).ConfigureAwait(false);

            return result.Item1;
        }

        public async Task<Tuple<MediaSourceInfo, IDirectStreamProvider>> GetChannelStreamWithDirectStreamProvider(string channelId, string streamId, CancellationToken cancellationToken)
        {
            var result = await GetChannelStreamInternal(channelId, streamId, cancellationToken).ConfigureAwait(false);

            return new Tuple<MediaSourceInfo, IDirectStreamProvider>(result.Item2, result.Item1 as IDirectStreamProvider);
        }

        private MediaSourceInfo CloneMediaSource(MediaSourceInfo mediaSource, bool enableStreamSharing)
        {
            var json = _jsonSerializer.SerializeToString(mediaSource);
            mediaSource = _jsonSerializer.DeserializeFromString<MediaSourceInfo>(json);

            mediaSource.Id = Guid.NewGuid().ToString("N") + "_" + mediaSource.Id;

            //if (mediaSource.DateLiveStreamOpened.HasValue && enableStreamSharing)
            //{
            //    var ticks = (DateTime.UtcNow - mediaSource.DateLiveStreamOpened.Value).Ticks - TimeSpan.FromSeconds(10).Ticks;
            //    ticks = Math.Max(0, ticks);
            //    mediaSource.Path += "?t=" + ticks.ToString(CultureInfo.InvariantCulture) + "&s=" + mediaSource.DateLiveStreamOpened.Value.Ticks.ToString(CultureInfo.InvariantCulture);
            //}

            return mediaSource;
        }

        public async Task<ILiveStream> GetLiveStream(string uniqueId)
        {
            await _liveStreamsSemaphore.WaitAsync().ConfigureAwait(false);

            try
            {
                return _liveStreams
                    .FirstOrDefault(i => string.Equals(i.UniqueId, uniqueId, StringComparison.OrdinalIgnoreCase));
            }
            finally
            {
                _liveStreamsSemaphore.Release();
            }

        }

        private async Task<Tuple<ILiveStream, MediaSourceInfo, ITunerHost>> GetChannelStreamInternal(string channelId, string streamId, CancellationToken cancellationToken)
        {
            _logger.Info("Streaming Channel " + channelId);

            await _liveStreamsSemaphore.WaitAsync(cancellationToken).ConfigureAwait(false);

            try
            {
                var result = _liveStreams.FirstOrDefault(i => string.Equals(i.OriginalStreamId, streamId, StringComparison.OrdinalIgnoreCase));

                if (result != null && result.EnableStreamSharing)
                {
                    var openedMediaSource = CloneMediaSource(result.OpenedMediaSource, result.EnableStreamSharing);
                    result.SharedStreamIds.Add(openedMediaSource.Id);

                    _logger.Info("Live stream {0} consumer count is now {1}", streamId, result.ConsumerCount);

                    return new Tuple<ILiveStream, MediaSourceInfo, ITunerHost>(result, openedMediaSource, result.TunerHost);
                }

                foreach (var hostInstance in _liveTvManager.TunerHosts)
                {
                    try
                    {
                        result = await hostInstance.GetChannelStream(channelId, streamId, cancellationToken).ConfigureAwait(false);

                        var openedMediaSource = CloneMediaSource(result.OpenedMediaSource, result.EnableStreamSharing);

                        result.SharedStreamIds.Add(openedMediaSource.Id);
                        _liveStreams.Add(result);

                        result.TunerHost = hostInstance;
                        result.OriginalStreamId = streamId;

                        _logger.Info("Returning mediasource streamId {0}, mediaSource.Id {1}, mediaSource.LiveStreamId {2}",
                            streamId, openedMediaSource.Id, openedMediaSource.LiveStreamId);

                        return new Tuple<ILiveStream, MediaSourceInfo, ITunerHost>(result, openedMediaSource, hostInstance);
                    }
                    catch (FileNotFoundException)
                    {
                    }
                    catch (OperationCanceledException)
                    {
                    }
                }
            }
            finally
            {
                _liveStreamsSemaphore.Release();
            }

            throw new Exception("Tuner not found.");
        }

        public async Task<List<MediaSourceInfo>> GetChannelStreamMediaSources(string channelId, CancellationToken cancellationToken)
        {
            if (string.IsNullOrWhiteSpace(channelId))
            {
                throw new ArgumentNullException("channelId");
            }

            foreach (var hostInstance in _liveTvManager.TunerHosts)
            {
                try
                {
                    var sources = await hostInstance.GetChannelStreamMediaSources(channelId, cancellationToken).ConfigureAwait(false);

                    if (sources.Count > 0)
                    {
                        return sources;
                    }
                }
                catch (NotImplementedException)
                {

                }
            }

            throw new NotImplementedException();
        }

        public async Task<List<MediaSourceInfo>> GetRecordingStreamMediaSources(string recordingId, CancellationToken cancellationToken)
        {
            ActiveRecordingInfo info;

            recordingId = recordingId.Replace("recording", string.Empty);

            if (_activeRecordings.TryGetValue(recordingId, out info))
            {
                var stream = new MediaSourceInfo
                {
                    Path = _appHost.GetLocalApiUrl("127.0.0.1") + "/LiveTv/LiveRecordings/" + recordingId + "/stream",
                    Id = recordingId,
                    SupportsDirectPlay = false,
                    SupportsDirectStream = true,
                    SupportsTranscoding = true,
                    IsInfiniteStream = true,
                    RequiresOpening = false,
                    RequiresClosing = false,
                    Protocol = MediaBrowser.Model.MediaInfo.MediaProtocol.Http,
                    BufferMs = 0,
                    IgnoreDts = true,
                    IgnoreIndex = true
                };

                var isAudio = false;
                await new LiveStreamHelper(_mediaEncoder, _logger).AddMediaInfoWithProbe(stream, isAudio, cancellationToken).ConfigureAwait(false);

                return new List<MediaSourceInfo>
                {
                    stream
                };
            }

            throw new FileNotFoundException();
        }

        public async Task<List<MediaSourceInfo>> GetRecordingStreamMediaSources(ActiveRecordingInfo info, CancellationToken cancellationToken)
        {
            var stream = new MediaSourceInfo
            {
                Path = _appHost.GetLocalApiUrl("127.0.0.1") + "/LiveTv/LiveRecordings/" + info.Id + "/stream",
                Id = info.Id,
                SupportsDirectPlay = false,
                SupportsDirectStream = true,
                SupportsTranscoding = true,
                IsInfiniteStream = true,
                RequiresOpening = false,
                RequiresClosing = false,
                Protocol = MediaBrowser.Model.MediaInfo.MediaProtocol.Http,
                BufferMs = 0,
                IgnoreDts = true,
                IgnoreIndex = true
            };

            var isAudio = false;
            await new LiveStreamHelper(_mediaEncoder, _logger).AddMediaInfoWithProbe(stream, isAudio, cancellationToken).ConfigureAwait(false);

            return new List<MediaSourceInfo>
            {
                stream
            };
        }

        public async Task CloseLiveStream(string id, CancellationToken cancellationToken)
        {
            // Ignore the consumer id
            //id = id.Substring(id.IndexOf('_') + 1);

            await _liveStreamsSemaphore.WaitAsync(cancellationToken).ConfigureAwait(false);

            try
            {
                var stream = _liveStreams.FirstOrDefault(i => i.SharedStreamIds.Contains(id));
                if (stream != null)
                {
                    stream.SharedStreamIds.Remove(id);

                    _logger.Info("Live stream {0} consumer count is now {1}", id, stream.ConsumerCount);

                    if (stream.ConsumerCount <= 0)
                    {
                        _liveStreams.Remove(stream);

                        _logger.Info("Closing live stream {0}", id);

                        await stream.Close().ConfigureAwait(false);
                        _logger.Info("Live stream {0} closed successfully", id);
                    }
                }
                else
                {
                    _logger.Warn("Live stream not found: {0}, unable to close", id);
                }
            }
            catch (OperationCanceledException)
            {
            }
            catch (Exception ex)
            {
                _logger.ErrorException("Error closing live stream", ex);
            }
            finally
            {
                _liveStreamsSemaphore.Release();
            }
        }

        public Task RecordLiveStream(string id, CancellationToken cancellationToken)
        {
            return Task.FromResult(0);
        }

        public Task ResetTuner(string id, CancellationToken cancellationToken)
        {
            return Task.FromResult(0);
        }

        async void _timerProvider_TimerFired(object sender, GenericEventArgs<TimerInfo> e)
        {
            var timer = e.Argument;

            _logger.Info("Recording timer fired.");

            try
            {
                var recordingEndDate = timer.EndDate.AddSeconds(timer.PostPaddingSeconds);

                if (recordingEndDate <= DateTime.UtcNow)
                {
                    _logger.Warn("Recording timer fired for updatedTimer {0}, Id: {1}, but the program has already ended.", timer.Name, timer.Id);
                    OnTimerOutOfDate(timer);
                    return;
                }

                var registration = await _liveTvManager.GetRegistrationInfo("dvr").ConfigureAwait(false);
                if (!registration.IsValid)
                {
                    _logger.Warn("Emby Premiere required to use Emby DVR.");
                    OnTimerOutOfDate(timer);
                    return;
                }

                var activeRecordingInfo = new ActiveRecordingInfo
                {
                    CancellationTokenSource = new CancellationTokenSource(),
                    Timer = timer,
                    Id = timer.Id
                };

                if (_activeRecordings.TryAdd(timer.Id, activeRecordingInfo))
                {
                    await RecordStream(timer, recordingEndDate, activeRecordingInfo, activeRecordingInfo.CancellationTokenSource.Token).ConfigureAwait(false);
                }
                else
                {
                    _logger.Info("Skipping RecordStream because it's already in progress.");
                }
            }
            catch (OperationCanceledException)
            {

            }
            catch (Exception ex)
            {
                _logger.ErrorException("Error recording stream", ex);
            }
        }

        private string GetRecordingPath(TimerInfo timer, out string seriesPath)
        {
            var recordPath = RecordingPath;
            var config = GetConfiguration();
            seriesPath = null;

            if (timer.IsProgramSeries)
            {
                var customRecordingPath = config.SeriesRecordingPath;
                var allowSubfolder = true;
                if (!string.IsNullOrWhiteSpace(customRecordingPath))
                {
                    allowSubfolder = string.Equals(customRecordingPath, recordPath, StringComparison.OrdinalIgnoreCase);
                    recordPath = customRecordingPath;
                }

                if (allowSubfolder && config.EnableRecordingSubfolders)
                {
                    recordPath = Path.Combine(recordPath, "Series");
                }

                var folderName = _fileSystem.GetValidFilename(timer.Name).Trim();

                // Can't use the year here in the folder name because it is the year of the episode, not the series.
                recordPath = Path.Combine(recordPath, folderName);

                seriesPath = recordPath;

                if (timer.SeasonNumber.HasValue)
                {
                    folderName = string.Format("Season {0}", timer.SeasonNumber.Value.ToString(CultureInfo.InvariantCulture));
                    recordPath = Path.Combine(recordPath, folderName);
                }
            }
            else if (timer.IsMovie)
            {
                var customRecordingPath = config.MovieRecordingPath;
                var allowSubfolder = true;
                if (!string.IsNullOrWhiteSpace(customRecordingPath))
                {
                    allowSubfolder = string.Equals(customRecordingPath, recordPath, StringComparison.OrdinalIgnoreCase);
                    recordPath = customRecordingPath;
                }

                if (allowSubfolder && config.EnableRecordingSubfolders)
                {
                    recordPath = Path.Combine(recordPath, "Movies");
                }

                var folderName = _fileSystem.GetValidFilename(timer.Name).Trim();
                if (timer.ProductionYear.HasValue)
                {
                    folderName += " (" + timer.ProductionYear.Value.ToString(CultureInfo.InvariantCulture) + ")";
                }
                recordPath = Path.Combine(recordPath, folderName);
            }
            else if (timer.IsKids)
            {
                if (config.EnableRecordingSubfolders)
                {
                    recordPath = Path.Combine(recordPath, "Kids");
                }

                var folderName = _fileSystem.GetValidFilename(timer.Name).Trim();
                if (timer.ProductionYear.HasValue)
                {
                    folderName += " (" + timer.ProductionYear.Value.ToString(CultureInfo.InvariantCulture) + ")";
                }
                recordPath = Path.Combine(recordPath, folderName);
            }
            else if (timer.IsSports)
            {
                if (config.EnableRecordingSubfolders)
                {
                    recordPath = Path.Combine(recordPath, "Sports");
                }
                recordPath = Path.Combine(recordPath, _fileSystem.GetValidFilename(timer.Name).Trim());
            }
            else
            {
                if (config.EnableRecordingSubfolders)
                {
                    recordPath = Path.Combine(recordPath, "Other");
                }
                recordPath = Path.Combine(recordPath, _fileSystem.GetValidFilename(timer.Name).Trim());
            }

            var recordingFileName = _fileSystem.GetValidFilename(RecordingHelper.GetRecordingName(timer)).Trim() + ".ts";

            return Path.Combine(recordPath, recordingFileName);
        }

        private async Task RecordStream(TimerInfo timer, DateTime recordingEndDate,
            ActiveRecordingInfo activeRecordingInfo, CancellationToken cancellationToken)
        {
            if (timer == null)
            {
                throw new ArgumentNullException("timer");
            }

            LiveTvProgram programInfo = null;

            if (!string.IsNullOrWhiteSpace(timer.ProgramId))
            {
                programInfo = GetProgramInfoFromCache(timer);
            }
            if (programInfo == null)
            {
                _logger.Info("Unable to find program with Id {0}. Will search using start date", timer.ProgramId);
                programInfo = GetProgramInfoFromCache(timer.ChannelId, timer.StartDate);
            }

            if (programInfo != null)
            {
                CopyProgramInfoToTimerInfo(programInfo, timer);
                //activeRecordingInfo.Program = programInfo;
            }

            string seriesPath = null;
            var recordPath = GetRecordingPath(timer, out seriesPath);
            var recordingStatus = RecordingStatus.New;

            string liveStreamId = null;

            try
            {
                var recorder = await GetRecorder().ConfigureAwait(false);

                var allMediaSources = await GetChannelStreamMediaSources(timer.ChannelId, CancellationToken.None).ConfigureAwait(false);

                _logger.Info("Opening recording stream from tuner provider");
                var liveStreamInfo = await GetChannelStreamInternal(timer.ChannelId, allMediaSources[0].Id, CancellationToken.None)
                            .ConfigureAwait(false);

                var mediaStreamInfo = liveStreamInfo.Item2;
                liveStreamId = mediaStreamInfo.Id;

                // HDHR doesn't seem to release the tuner right away after first probing with ffmpeg
                //await Task.Delay(3000, cancellationToken).ConfigureAwait(false);

                recordPath = recorder.GetOutputPath(mediaStreamInfo, recordPath);
                recordPath = EnsureFileUnique(recordPath, timer.Id);

                _libraryMonitor.ReportFileSystemChangeBeginning(recordPath);
                activeRecordingInfo.Path = recordPath;

                var duration = recordingEndDate - DateTime.UtcNow;

                _logger.Info("Beginning recording. Will record for {0} minutes.", duration.TotalMinutes.ToString(CultureInfo.InvariantCulture));

                _logger.Info("Writing file to path: " + recordPath);

                Action onStarted = async () =>
                {
                    timer.Status = RecordingStatus.InProgress;
                    _timerProvider.AddOrUpdate(timer, false);

                    await SaveRecordingMetadata(timer, recordPath, seriesPath).ConfigureAwait(false);
                    TriggerRefresh(recordPath);
                    EnforceKeepUpTo(timer, seriesPath);
                };

                await recorder.Record(liveStreamInfo.Item1 as IDirectStreamProvider, mediaStreamInfo, recordPath, duration, onStarted, cancellationToken).ConfigureAwait(false);

                recordingStatus = RecordingStatus.Completed;
                _logger.Info("Recording completed: {0}", recordPath);
            }
            catch (OperationCanceledException)
            {
                _logger.Info("Recording stopped: {0}", recordPath);
                recordingStatus = RecordingStatus.Completed;
            }
            catch (Exception ex)
            {
                _logger.ErrorException("Error recording to {0}", ex, recordPath);
                recordingStatus = RecordingStatus.Error;
            }

            if (!string.IsNullOrWhiteSpace(liveStreamId))
            {
                try
                {
                    await CloseLiveStream(liveStreamId, CancellationToken.None).ConfigureAwait(false);
                }
                catch (Exception ex)
                {
                    _logger.ErrorException("Error closing live stream", ex);
                }
            }

            TriggerRefresh(recordPath);
            _libraryMonitor.ReportFileSystemChangeComplete(recordPath, false);

            ActiveRecordingInfo removed;
            _activeRecordings.TryRemove(timer.Id, out removed);

            if (recordingStatus != RecordingStatus.Completed && DateTime.UtcNow < timer.EndDate && timer.RetryCount < 10)
            {
                const int retryIntervalSeconds = 60;
                _logger.Info("Retrying recording in {0} seconds.", retryIntervalSeconds);

                timer.Status = RecordingStatus.New;
                timer.StartDate = DateTime.UtcNow.AddSeconds(retryIntervalSeconds);
                timer.RetryCount++;
                _timerProvider.AddOrUpdate(timer);
            }
            else if (_fileSystem.FileExists(recordPath))
            {
                timer.RecordingPath = recordPath;
                timer.Status = RecordingStatus.Completed;
                _timerProvider.AddOrUpdate(timer, false);
                OnSuccessfulRecording(timer, recordPath);
            }
            else
            {
                _timerProvider.Delete(timer);
            }
        }

        private void TriggerRefresh(string path)
        {
            _logger.Info("Triggering refresh on {0}", path);

            var item = GetAffectedBaseItem(_fileSystem.GetDirectoryName(path));

            if (item != null)
            {
                _logger.Info("Refreshing recording parent {0}", item.Path);

                _providerManager.QueueRefresh(item.Id, new MetadataRefreshOptions(_fileSystem)
                {
                    ValidateChildren = true,
                    RefreshPaths = new List<string>
                    {
                        path,
                        _fileSystem.GetDirectoryName(path),
                        _fileSystem.GetDirectoryName(_fileSystem.GetDirectoryName(path))
                    }

                }, RefreshPriority.High);
            }
        }

        private BaseItem GetAffectedBaseItem(string path)
        {
            BaseItem item = null;

            var parentPath = _fileSystem.GetDirectoryName(path);

            while (item == null && !string.IsNullOrEmpty(path))
            {
                item = _libraryManager.FindByPath(path, null);

                path = _fileSystem.GetDirectoryName(path);
            }

            if (item != null)
            {
                if (item.GetType() == typeof(Folder) && string.Equals(item.Path, parentPath, StringComparison.OrdinalIgnoreCase))
                {
                    var parentItem = item.GetParent();
                    if (parentItem != null && !(parentItem is AggregateFolder))
                    {
                        item = parentItem;
                    }
                }
            }

            return item;
        }

        private async void EnforceKeepUpTo(TimerInfo timer, string seriesPath)
        {
            if (string.IsNullOrWhiteSpace(timer.SeriesTimerId))
            {
                return;
            }
            if (string.IsNullOrWhiteSpace(seriesPath))
            {
                return;
            }

            var seriesTimerId = timer.SeriesTimerId;
            var seriesTimer = _seriesTimerProvider.GetAll().FirstOrDefault(i => string.Equals(i.Id, seriesTimerId, StringComparison.OrdinalIgnoreCase));

            if (seriesTimer == null || seriesTimer.KeepUpTo <= 1)
            {
                return;
            }

            if (_disposed)
            {
                return;
            }

            await _recordingDeleteSemaphore.WaitAsync().ConfigureAwait(false);

            try
            {
                if (_disposed)
                {
                    return;
                }

                var timersToDelete = _timerProvider.GetAll()
                    .Where(i => i.Status == RecordingStatus.Completed && !string.IsNullOrWhiteSpace(i.RecordingPath))
                    .Where(i => string.Equals(i.SeriesTimerId, seriesTimerId, StringComparison.OrdinalIgnoreCase))
                    .OrderByDescending(i => i.EndDate)
                    .Where(i => _fileSystem.FileExists(i.RecordingPath))
                    .Skip(seriesTimer.KeepUpTo - 1)
                    .ToList();

                await DeleteLibraryItemsForTimers(timersToDelete).ConfigureAwait(false);

                var librarySeries = _libraryManager.FindByPath(seriesPath, true) as Folder;

                if (librarySeries == null)
                {
                    return;
                }

                var episodesToDelete = (librarySeries.GetItemList(new InternalItemsQuery
                {
                    OrderBy = new[] { new Tuple<string, SortOrder>(ItemSortBy.DateCreated, SortOrder.Descending) },
                    IsVirtualItem = false,
                    IsFolder = false,
                    Recursive = true,
                    DtoOptions = new DtoOptions(true)

                }))
                    .Where(i => i.LocationType == LocationType.FileSystem && _fileSystem.FileExists(i.Path))
                    .Skip(seriesTimer.KeepUpTo - 1)
                    .ToList();

                foreach (var item in episodesToDelete)
                {
                    try
                    {
                        await _libraryManager.DeleteItem(item, new DeleteOptions
                        {
                            DeleteFileLocation = true

                        }).ConfigureAwait(false);
                    }
                    catch (Exception ex)
                    {
                        _logger.ErrorException("Error deleting item", ex);
                    }
                }
            }
            finally
            {
                _recordingDeleteSemaphore.Release();
            }
        }

        private readonly SemaphoreSlim _recordingDeleteSemaphore = new SemaphoreSlim(1, 1);
        private async Task DeleteLibraryItemsForTimers(List<TimerInfo> timers)
        {
            foreach (var timer in timers)
            {
                if (_disposed)
                {
                    return;
                }

                try
                {
                    await DeleteLibraryItemForTimer(timer).ConfigureAwait(false);
                }
                catch (Exception ex)
                {
                    _logger.ErrorException("Error deleting recording", ex);
                }
            }
        }

        private async Task DeleteLibraryItemForTimer(TimerInfo timer)
        {
            var libraryItem = _libraryManager.FindByPath(timer.RecordingPath, false);

            if (libraryItem != null)
            {
                await _libraryManager.DeleteItem(libraryItem, new DeleteOptions
                {
                    DeleteFileLocation = true

                }).ConfigureAwait(false);
            }
            else
            {
                try
                {
                    _fileSystem.DeleteFile(timer.RecordingPath);
                }
                catch (IOException)
                {

                }
            }

            _timerProvider.Delete(timer);
        }

        private string EnsureFileUnique(string path, string timerId)
        {
            var originalPath = path;
            var index = 1;

            while (FileExists(path, timerId))
            {
                var parent = _fileSystem.GetDirectoryName(originalPath);
                var name = Path.GetFileNameWithoutExtension(originalPath);
                name += " - " + index.ToString(CultureInfo.InvariantCulture);

                path = Path.ChangeExtension(Path.Combine(parent, name), Path.GetExtension(originalPath));
                index++;
            }

            return path;
        }

        private bool FileExists(string path, string timerId)
        {
            if (_fileSystem.FileExists(path))
            {
                return true;
            }

            var hasRecordingAtPath = _activeRecordings
                .Values
                .ToList()
                .Any(i => string.Equals(i.Path, path, StringComparison.OrdinalIgnoreCase) && !string.Equals(i.Timer.Id, timerId, StringComparison.OrdinalIgnoreCase));

            if (hasRecordingAtPath)
            {
                return true;
            }
            return false;
        }

        private async Task<IRecorder> GetRecorder()
        {
            var config = GetConfiguration();

            var regInfo = await _liveTvManager.GetRegistrationInfo("dvr").ConfigureAwait(false);

            if (regInfo.IsValid)
            {
                if (config.EnableRecordingEncoding)
                {
                    return new EncodedRecorder(_logger, _fileSystem, _mediaEncoder, _config.ApplicationPaths, _jsonSerializer, config, _httpClient, _processFactory, _config);
                }

                return new DirectRecorder(_logger, _httpClient, _fileSystem);

                //var options = new LiveTvOptions
                //{
                //    EnableOriginalAudioWithEncodedRecordings = true,
                //    RecordedVideoCodec = "copy",
                //    RecordingEncodingFormat = "ts"
                //};
                //return new EncodedRecorder(_logger, _fileSystem, _mediaEncoder, _config.ApplicationPaths, _jsonSerializer, options, _httpClient, _processFactory, _config);
            }

            throw new InvalidOperationException("Emby DVR Requires an active Emby Premiere subscription.");
        }

        private void OnSuccessfulRecording(TimerInfo timer, string path)
        {
            //if (timer.IsProgramSeries && GetConfiguration().EnableAutoOrganize)
            //{
            //    try
            //    {
            //        // this is to account for the library monitor holding a lock for additional time after the change is complete.
            //        // ideally this shouldn't be hard-coded
            //        await Task.Delay(30000).ConfigureAwait(false);

            //        var organize = new EpisodeFileOrganizer(_organizationService, _config, _fileSystem, _logger, _libraryManager, _libraryMonitor, _providerManager);

            //        var result = await organize.OrganizeEpisodeFile(path, _config.GetAutoOrganizeOptions(), false, CancellationToken.None).ConfigureAwait(false);

            //        if (result.Status == FileSortingStatus.Success)
            //        {
            //            return;
            //        }
            //    }
            //    catch (Exception ex)
            //    {
            //        _logger.ErrorException("Error processing new recording", ex);
            //    }
            //}
            PostProcessRecording(timer, path);
        }

        private void PostProcessRecording(TimerInfo timer, string path)
        {
            var options = GetConfiguration();
            if (string.IsNullOrWhiteSpace(options.RecordingPostProcessor))
            {
                return;
            }

            try
            {
                var process = _processFactory.Create(new ProcessOptions
                {
                    Arguments = GetPostProcessArguments(path, options.RecordingPostProcessorArguments),
                    CreateNoWindow = true,
                    EnableRaisingEvents = true,
                    ErrorDialog = false,
                    FileName = options.RecordingPostProcessor,
                    IsHidden = true,
                    UseShellExecute = false
                });

                _logger.Info("Running recording post processor {0} {1}", process.StartInfo.FileName, process.StartInfo.Arguments);

                process.Exited += Process_Exited;
                process.Start();
            }
            catch (Exception ex)
            {
                _logger.ErrorException("Error running recording post processor", ex);
            }
        }

        private string GetPostProcessArguments(string path, string arguments)
        {
            return arguments.Replace("{path}", path, StringComparison.OrdinalIgnoreCase);
        }

        private void Process_Exited(object sender, EventArgs e)
        {
            var process = (IProcess)sender;
            try
            {
                _logger.Info("Recording post-processing script completed with exit code {0}", process.ExitCode);
            }
            catch
            {

            }

            process.Dispose();
        }

        private async Task SaveRecordingImage(string recordingPath, LiveTvProgram program, ItemImageInfo image)
        {
            if (!image.IsLocalFile)
            {
                image = await _libraryManager.ConvertImageToLocal(program, image, 0).ConfigureAwait(false);
            }

            string imageSaveFilenameWithoutExtension = null;

            switch (image.Type)
            {
                case ImageType.Primary:

                    if (program.IsSeries)
                    {
                        imageSaveFilenameWithoutExtension = Path.GetFileNameWithoutExtension(recordingPath) + "-thumb";
                    }
                    else
                    {
                        imageSaveFilenameWithoutExtension = "poster";
                    }

                    break;
                case ImageType.Logo:
                    imageSaveFilenameWithoutExtension = "logo";
                    break;
                case ImageType.Thumb:
                    imageSaveFilenameWithoutExtension = "landscape";
                    break;
                case ImageType.Backdrop:
                    imageSaveFilenameWithoutExtension = "fanart";
                    break;
                default:
                    break;
            }

            if (string.IsNullOrWhiteSpace(imageSaveFilenameWithoutExtension))
            {
                return;
            }

            var imageSavePath = Path.Combine(_fileSystem.GetDirectoryName(recordingPath), imageSaveFilenameWithoutExtension);

            // preserve original image extension
            imageSavePath = Path.ChangeExtension(imageSavePath, Path.GetExtension(image.Path));

            _fileSystem.CopyFile(image.Path, imageSavePath, true);
        }

        private async Task SaveRecordingImages(string recordingPath, LiveTvProgram program)
        {
            var image = program.GetImageInfo(ImageType.Primary, 0);

            if (image != null && program.IsMovie)
            {
                try
                {
                    await SaveRecordingImage(recordingPath, program, image).ConfigureAwait(false);
                }
                catch (Exception ex)
                {
                    _logger.ErrorException("Error saving recording image", ex);
                }
            }

            if (!program.IsSeries)
            {
                image = program.GetImageInfo(ImageType.Backdrop, 0);
                if (image != null)
                {
                    try
                    {
                        await SaveRecordingImage(recordingPath, program, image).ConfigureAwait(false);
                    }
                    catch (Exception ex)
                    {
                        _logger.ErrorException("Error saving recording image", ex);
                    }
                }

                image = program.GetImageInfo(ImageType.Thumb, 0);
                if (image != null)
                {
                    try
                    {
                        await SaveRecordingImage(recordingPath, program, image).ConfigureAwait(false);
                    }
                    catch (Exception ex)
                    {
                        _logger.ErrorException("Error saving recording image", ex);
                    }
                }

                image = program.GetImageInfo(ImageType.Logo, 0);
                if (image != null)
                {
                    try
                    {
                        await SaveRecordingImage(recordingPath, program, image).ConfigureAwait(false);
                    }
                    catch (Exception ex)
                    {
                        _logger.ErrorException("Error saving recording image", ex);
                    }
                }
            }
        }

        private async Task SaveRecordingMetadata(TimerInfo timer, string recordingPath, string seriesPath)
        {
            try
            {
                var program = string.IsNullOrWhiteSpace(timer.ProgramId) ? null : _libraryManager.GetItemList(new InternalItemsQuery
                {
                    IncludeItemTypes = new[] { typeof(LiveTvProgram).Name },
                    Limit = 1,
                    ExternalId = timer.ProgramId,
                    DtoOptions = new DtoOptions(true)

                }).FirstOrDefault() as LiveTvProgram;

                // dummy this up
                if (program == null)
                {
                    program = new LiveTvProgram
                    {
                        Name = timer.Name,
                        HomePageUrl = timer.HomePageUrl,
                        Overview = timer.Overview,
                        Genres = timer.Genres,
                        CommunityRating = timer.CommunityRating,
                        OfficialRating = timer.OfficialRating,
                        ProductionYear = timer.ProductionYear,
                        PremiereDate = timer.OriginalAirDate,
                        IndexNumber = timer.EpisodeNumber,
                        ParentIndexNumber = timer.SeasonNumber
                    };
                }

                if (timer.IsSports)
                {
                    AddGenre(program.Genres, "Sports");
                }
                if (timer.IsKids)
                {
                    AddGenre(program.Genres, "Kids");
                    AddGenre(program.Genres, "Children");
                }
                if (timer.IsNews)
                {
                    AddGenre(program.Genres, "News");
                }

                if (timer.IsProgramSeries)
                {
                    SaveSeriesNfo(timer, seriesPath);
                    SaveVideoNfo(timer, recordingPath, program, false);
                }
                else if (!timer.IsMovie || timer.IsSports || timer.IsNews)
                {
                    SaveVideoNfo(timer, recordingPath, program, true);
                }
                else
                {
                    SaveVideoNfo(timer, recordingPath, program, false);
                }

                await SaveRecordingImages(recordingPath, program).ConfigureAwait(false);
            }
            catch (Exception ex)
            {
                _logger.ErrorException("Error saving nfo", ex);
            }
        }

        private void SaveSeriesNfo(TimerInfo timer, string seriesPath)
        {
            var nfoPath = Path.Combine(seriesPath, "tvshow.nfo");

            if (_fileSystem.FileExists(nfoPath))
            {
                return;
            }

            using (var stream = _fileSystem.GetFileStream(nfoPath, FileOpenMode.Create, FileAccessMode.Write, FileShareMode.Read))
            {
                var settings = new XmlWriterSettings
                {
                    Indent = true,
                    Encoding = Encoding.UTF8,
                    CloseOutput = false
                };

                using (XmlWriter writer = XmlWriter.Create(stream, settings))
                {
                    writer.WriteStartDocument(true);
                    writer.WriteStartElement("tvshow");

                    if (!string.IsNullOrWhiteSpace(timer.Name))
                    {
                        writer.WriteElementString("title", timer.Name);
                    }

                    if (!string.IsNullOrEmpty(timer.OfficialRating))
                    {
                        writer.WriteElementString("mpaa", timer.OfficialRating);
                    }

                    foreach (var genre in timer.Genres)
                    {
                        writer.WriteElementString("genre", genre);
                    }

                    writer.WriteEndElement();
                    writer.WriteEndDocument();
                }
            }
        }

        public const string DateAddedFormat = "yyyy-MM-dd HH:mm:ss";
        private void SaveVideoNfo(TimerInfo timer, string recordingPath, BaseItem item, bool lockData)
        {
            var nfoPath = Path.ChangeExtension(recordingPath, ".nfo");

            if (_fileSystem.FileExists(nfoPath))
            {
                return;
            }

            using (var stream = _fileSystem.GetFileStream(nfoPath, FileOpenMode.Create, FileAccessMode.Write, FileShareMode.Read))
            {
                var settings = new XmlWriterSettings
                {
                    Indent = true,
                    Encoding = Encoding.UTF8,
                    CloseOutput = false
                };

                var options = _config.GetNfoConfiguration();

                using (XmlWriter writer = XmlWriter.Create(stream, settings))
                {
                    writer.WriteStartDocument(true);

                    if (timer.IsProgramSeries)
                    {
                        writer.WriteStartElement("episodedetails");

                        if (!string.IsNullOrWhiteSpace(timer.EpisodeTitle))
                        {
                            writer.WriteElementString("title", timer.EpisodeTitle);
                        }

                        if (item.PremiereDate.HasValue)
                        {
                            var formatString = options.ReleaseDateFormat;

                            writer.WriteElementString("aired", item.PremiereDate.Value.ToLocalTime().ToString(formatString));
                        }

                        if (item.IndexNumber.HasValue)
                        {
                            writer.WriteElementString("episode", item.IndexNumber.Value.ToString(CultureInfo.InvariantCulture));
                        }

                        if (item.ParentIndexNumber.HasValue)
                        {
                            writer.WriteElementString("season", item.ParentIndexNumber.Value.ToString(CultureInfo.InvariantCulture));
                        }
                    }
                    else
                    {
                        writer.WriteStartElement("movie");

                        if (!string.IsNullOrWhiteSpace(item.Name))
                        {
                            writer.WriteElementString("title", item.Name);
                        }

                        if (!string.IsNullOrWhiteSpace(item.OriginalTitle))
                        {
                            writer.WriteElementString("originaltitle", item.OriginalTitle);
                        }

                        if (item.PremiereDate.HasValue)
                        {
                            var formatString = options.ReleaseDateFormat;

                            writer.WriteElementString("premiered", item.PremiereDate.Value.ToLocalTime().ToString(formatString));
                            writer.WriteElementString("releasedate", item.PremiereDate.Value.ToLocalTime().ToString(formatString));
                        }
                    }

                    writer.WriteElementString("dateadded", DateTime.UtcNow.ToLocalTime().ToString(DateAddedFormat));

                    if (item.ProductionYear.HasValue)
                    {
                        writer.WriteElementString("year", item.ProductionYear.Value.ToString(CultureInfo.InvariantCulture));
                    }

                    if (!string.IsNullOrEmpty(item.OfficialRating))
                    {
                        writer.WriteElementString("mpaa", item.OfficialRating);
                    }

                    var overview = (item.Overview ?? string.Empty)
                        .StripHtml()
                        .Replace("&quot;", "'");

                    writer.WriteElementString("plot", overview);

                    if (lockData)
                    {
                        writer.WriteElementString("lockdata", true.ToString().ToLower());
                    }

                    if (item.CommunityRating.HasValue)
                    {
                        writer.WriteElementString("rating", item.CommunityRating.Value.ToString(CultureInfo.InvariantCulture));
                    }

                    foreach (var genre in item.Genres)
                    {
                        writer.WriteElementString("genre", genre);
                    }

                    if (!string.IsNullOrWhiteSpace(item.HomePageUrl))
                    {
                        writer.WriteElementString("website", item.HomePageUrl);
                    }

                    var people = item.Id == Guid.Empty ? new List<PersonInfo>() : _libraryManager.GetPeople(item);

                    var directors = people
                        .Where(i => IsPersonType(i, PersonType.Director))
                        .Select(i => i.Name)
                        .ToList();

                    foreach (var person in directors)
                    {
                        writer.WriteElementString("director", person);
                    }

                    var writers = people
                        .Where(i => IsPersonType(i, PersonType.Writer))
                        .Select(i => i.Name)
                        .Distinct(StringComparer.OrdinalIgnoreCase)
                        .ToList();

                    foreach (var person in writers)
                    {
                        writer.WriteElementString("writer", person);
                    }

                    foreach (var person in writers)
                    {
                        writer.WriteElementString("credits", person);
                    }

                    var tmdbCollection = item.GetProviderId(MetadataProviders.TmdbCollection);

                    if (!string.IsNullOrEmpty(tmdbCollection))
                    {
                        writer.WriteElementString("collectionnumber", tmdbCollection);
                    }

                    var imdb = item.GetProviderId(MetadataProviders.Imdb);
                    if (!string.IsNullOrEmpty(imdb))
                    {
                        if (item is Series)
                        {
                            writer.WriteElementString("imdb_id", imdb);
                        }
                        else
                        {
                            writer.WriteElementString("imdbid", imdb);
                        }
                    }

                    var tvdb = item.GetProviderId(MetadataProviders.Tvdb);
                    if (!string.IsNullOrEmpty(tvdb))
                    {
                        writer.WriteElementString("tvdbid", tvdb);
                    }

                    var tmdb = item.GetProviderId(MetadataProviders.Tmdb);
                    if (!string.IsNullOrEmpty(tmdb))
                    {
                        writer.WriteElementString("tmdbid", tmdb);
                    }

                    if (item.CriticRating.HasValue)
                    {
                        writer.WriteElementString("criticrating", item.CriticRating.Value.ToString(CultureInfo.InvariantCulture));
                    }

                    if (!string.IsNullOrWhiteSpace(item.Tagline))
                    {
                        writer.WriteElementString("tagline", item.Tagline);
                    }

                    foreach (var studio in item.Studios)
                    {
                        writer.WriteElementString("studio", studio);
                    }

                    writer.WriteEndElement();
                    writer.WriteEndDocument();
                }
            }
        }

        private static bool IsPersonType(PersonInfo person, string type)
        {
            return string.Equals(person.Type, type, StringComparison.OrdinalIgnoreCase) || string.Equals(person.Role, type, StringComparison.OrdinalIgnoreCase);
        }

        private void AddGenre(List<string> genres, string genre)
        {
            if (!genres.Contains(genre, StringComparer.OrdinalIgnoreCase))
            {
                genres.Add(genre);
            }
        }

        private LiveTvProgram GetProgramInfoFromCache(string programId)
        {
            var query = new InternalItemsQuery
            {
                ItemIds = new[] { _liveTvManager.GetInternalProgramId(Name, programId).ToString("N") },
                Limit = 1,
                DtoOptions = new DtoOptions()
            };

            return _libraryManager.GetItemList(query).Cast<LiveTvProgram>().FirstOrDefault();
        }

        private LiveTvProgram GetProgramInfoFromCache(TimerInfo timer)
        {
            return GetProgramInfoFromCache(timer.ProgramId, timer.ChannelId);
        }

        private LiveTvProgram GetProgramInfoFromCache(string programId, string channelId)
        {
            return GetProgramInfoFromCache(programId);
        }

        private LiveTvProgram GetProgramInfoFromCache(string channelId, DateTime startDateUtc)
        {
            var query = new InternalItemsQuery
            {
                IncludeItemTypes = new string[] { typeof(LiveTvProgram).Name },
                Limit = 1,
                DtoOptions = new DtoOptions(true)
                {
                    EnableImages = false
                },
                MinStartDate = startDateUtc.AddMinutes(-3),
                MaxStartDate = startDateUtc.AddMinutes(3),
                OrderBy = new[] { new Tuple<string, SortOrder>(ItemSortBy.StartDate, SortOrder.Ascending) }
            };

            if (!string.IsNullOrWhiteSpace(channelId))
            {
                query.ChannelIds = new[] { _liveTvManager.GetInternalChannelId(Name, channelId).ToString("N") };
            }

            return _libraryManager.GetItemList(query).Cast<LiveTvProgram>().FirstOrDefault();
        }

        private LiveTvOptions GetConfiguration()
        {
            return _config.GetConfiguration<LiveTvOptions>("livetv");
        }

        private bool ShouldCancelTimerForSeriesTimer(SeriesTimerInfo seriesTimer, TimerInfo timer)
        {
            if (timer.IsManual)
            {
                return false;
            }

            if (!seriesTimer.RecordAnyTime)
            {
                if (Math.Abs(seriesTimer.StartDate.TimeOfDay.Ticks - timer.StartDate.TimeOfDay.Ticks) >= TimeSpan.FromMinutes(5).Ticks)
                {
                    return true;
                }
            }

            //if (!seriesTimer.Days.Contains(timer.StartDate.ToLocalTime().DayOfWeek))
            //{
            //    return true;
            //}

            if (seriesTimer.RecordNewOnly && timer.IsRepeat)
            {
                return true;
            }

            if (!seriesTimer.RecordAnyChannel && !string.Equals(timer.ChannelId, seriesTimer.ChannelId, StringComparison.OrdinalIgnoreCase))
            {
                return true;
            }

            return seriesTimer.SkipEpisodesInLibrary && IsProgramAlreadyInLibrary(timer);
        }

        private void HandleDuplicateShowIds(List<TimerInfo> timers)
        {
            foreach (var timer in timers.Skip(1))
            {
                // TODO: Get smarter, prefer HD, etc

                timer.Status = RecordingStatus.Cancelled;
                _timerProvider.Update(timer);
            }
        }

        private void SearchForDuplicateShowIds(List<TimerInfo> timers)
        {
            var groups = timers.ToLookup(i => i.ShowId ?? string.Empty).ToList();

            foreach (var group in groups)
            {
                if (string.IsNullOrWhiteSpace(group.Key))
                {
                    continue;
                }

                var groupTimers = group.ToList();

                if (groupTimers.Count < 2)
                {
                    continue;
                }

                HandleDuplicateShowIds(groupTimers);
            }
        }

        private async Task UpdateTimersForSeriesTimer(SeriesTimerInfo seriesTimer, bool updateTimerSettings, bool deleteInvalidTimers)
        {
            var allTimers = GetTimersForSeries(seriesTimer)
                .ToList();

            var registration = await _liveTvManager.GetRegistrationInfo("seriesrecordings").ConfigureAwait(false);

            var enabledTimersForSeries = new List<TimerInfo>();

            if (registration.IsValid)
            {
                foreach (var timer in allTimers)
                {
                    var existingTimer = _timerProvider.GetTimer(timer.Id);

                    if (existingTimer == null)
                    {
                        existingTimer = string.IsNullOrWhiteSpace(timer.ProgramId)
                            ? null
                            : _timerProvider.GetTimerByProgramId(timer.ProgramId);
                    }

                    if (existingTimer == null)
                    {
                        if (ShouldCancelTimerForSeriesTimer(seriesTimer, timer))
                        {
                            timer.Status = RecordingStatus.Cancelled;
                        }
                        else
                        {
                            enabledTimersForSeries.Add(timer);
                        }
                        _timerProvider.Add(timer);
                    }
                    else
                    {
                        // Only update if not currently active - test both new timer and existing in case Id's are different
                        // Id's could be different if the timer was created manually prior to series timer creation
                        ActiveRecordingInfo activeRecordingInfo;
                        if (!_activeRecordings.TryGetValue(timer.Id, out activeRecordingInfo) && !_activeRecordings.TryGetValue(existingTimer.Id, out activeRecordingInfo))
                        {
                            UpdateExistingTimerWithNewMetadata(existingTimer, timer);

                            // Needed by ShouldCancelTimerForSeriesTimer
                            timer.IsManual = existingTimer.IsManual;

                            if (ShouldCancelTimerForSeriesTimer(seriesTimer, timer))
                            {
                                existingTimer.Status = RecordingStatus.Cancelled;
                            }

                            if (existingTimer.Status != RecordingStatus.Cancelled)
                            {
                                enabledTimersForSeries.Add(existingTimer);
                            }

                            if (updateTimerSettings)
                            {
                                existingTimer.KeepUntil = seriesTimer.KeepUntil;
                                existingTimer.IsPostPaddingRequired = seriesTimer.IsPostPaddingRequired;
                                existingTimer.IsPrePaddingRequired = seriesTimer.IsPrePaddingRequired;
                                existingTimer.PostPaddingSeconds = seriesTimer.PostPaddingSeconds;
                                existingTimer.PrePaddingSeconds = seriesTimer.PrePaddingSeconds;
                                existingTimer.Priority = seriesTimer.Priority;
                            }

                            existingTimer.SeriesTimerId = seriesTimer.Id;
                            _timerProvider.Update(existingTimer);
                        }
                    }
                }
            }

            SearchForDuplicateShowIds(enabledTimersForSeries);

            if (deleteInvalidTimers)
            {
                var allTimerIds = allTimers
                    .Select(i => i.Id)
                    .ToList();

                var deleteStatuses = new List<RecordingStatus>
                {
                    RecordingStatus.New
                };

                var deletes = _timerProvider.GetAll()
                    .Where(i => string.Equals(i.SeriesTimerId, seriesTimer.Id, StringComparison.OrdinalIgnoreCase))
                    .Where(i => !allTimerIds.Contains(i.Id, StringComparer.OrdinalIgnoreCase) && i.StartDate > DateTime.UtcNow)
                    .Where(i => deleteStatuses.Contains(i.Status))
                    .ToList();

                foreach (var timer in deletes)
                {
                    CancelTimerInternal(timer.Id, false);
                }
            }
        }

        private IEnumerable<TimerInfo> GetTimersForSeries(SeriesTimerInfo seriesTimer)
        {
            if (seriesTimer == null)
            {
                throw new ArgumentNullException("seriesTimer");
            }

            if (string.IsNullOrWhiteSpace(seriesTimer.SeriesId))
            {
                return new List<TimerInfo>();
            }

            var query = new InternalItemsQuery
            {
                IncludeItemTypes = new string[] { typeof(LiveTvProgram).Name },
                ExternalSeriesId = seriesTimer.SeriesId,
                DtoOptions = new DtoOptions(true)
                {
                    EnableImages = false
                },
                MinEndDate = DateTime.UtcNow
            };

            if (!seriesTimer.RecordAnyChannel)
            {
                query.ChannelIds = new[] { _liveTvManager.GetInternalChannelId(Name, seriesTimer.ChannelId).ToString("N") };
            }

            var tempChannelCache = new Dictionary<string, LiveTvChannel>();

            return _libraryManager.GetItemList(query).Cast<LiveTvProgram>().Select(i => CreateTimer(i, seriesTimer, tempChannelCache));
        }

        private TimerInfo CreateTimer(LiveTvProgram parent, SeriesTimerInfo seriesTimer, Dictionary<string, LiveTvChannel> tempChannelCache)
        {
            string channelId = seriesTimer.RecordAnyChannel ? null : seriesTimer.ChannelId;

            if (string.IsNullOrWhiteSpace(channelId) && !string.IsNullOrWhiteSpace(parent.ChannelId))
            {
                LiveTvChannel channel;

                if (!tempChannelCache.TryGetValue(parent.ChannelId, out channel))
                {
                    channel = _libraryManager.GetItemList(new InternalItemsQuery
                    {
                        IncludeItemTypes = new string[] { typeof(LiveTvChannel).Name },
                        ItemIds = new[] { parent.ChannelId },
                        DtoOptions = new DtoOptions()

                    }).Cast<LiveTvChannel>().FirstOrDefault();

                    if (channel != null && !string.IsNullOrWhiteSpace(channel.ExternalId))
                    {
                        tempChannelCache[parent.ChannelId] = channel;
                    }
                }

                if (channel != null || tempChannelCache.TryGetValue(parent.ChannelId, out channel))
                {
                    channelId = channel.ExternalId;
                }
            }

            var timer = new TimerInfo
            {
                ChannelId = channelId,
                Id = (seriesTimer.Id + parent.ExternalId).GetMD5().ToString("N"),
                StartDate = parent.StartDate,
                EndDate = parent.EndDate.Value,
                ProgramId = parent.ExternalId,
                PrePaddingSeconds = seriesTimer.PrePaddingSeconds,
                PostPaddingSeconds = seriesTimer.PostPaddingSeconds,
                IsPostPaddingRequired = seriesTimer.IsPostPaddingRequired,
                IsPrePaddingRequired = seriesTimer.IsPrePaddingRequired,
                KeepUntil = seriesTimer.KeepUntil,
                Priority = seriesTimer.Priority,
                Name = parent.Name,
                Overview = parent.Overview,
                SeriesId = parent.ExternalSeriesId,
                SeriesTimerId = seriesTimer.Id,
                ShowId = parent.ShowId
            };

            CopyProgramInfoToTimerInfo(parent, timer, tempChannelCache);

            return timer;
        }

        private void CopyProgramInfoToTimerInfo(LiveTvProgram programInfo, TimerInfo timerInfo)
        {
            var tempChannelCache = new Dictionary<string, LiveTvChannel>();
            CopyProgramInfoToTimerInfo(programInfo, timerInfo, tempChannelCache);
        }

        private void CopyProgramInfoToTimerInfo(LiveTvProgram programInfo, TimerInfo timerInfo, Dictionary<string, LiveTvChannel> tempChannelCache)
        {
            string channelId = null;

            if (!string.IsNullOrWhiteSpace(programInfo.ChannelId))
            {
                LiveTvChannel channel;

                if (!tempChannelCache.TryGetValue(programInfo.ChannelId, out channel))
                {
                    channel = _libraryManager.GetItemList(new InternalItemsQuery
                    {
                        IncludeItemTypes = new string[] { typeof(LiveTvChannel).Name },
                        ItemIds = new[] { programInfo.ChannelId },
                        DtoOptions = new DtoOptions()

                    }).Cast<LiveTvChannel>().FirstOrDefault();

                    if (channel != null && !string.IsNullOrWhiteSpace(channel.ExternalId))
                    {
                        tempChannelCache[programInfo.ChannelId] = channel;
                    }
                }

                if (channel != null || tempChannelCache.TryGetValue(programInfo.ChannelId, out channel))
                {
                    channelId = channel.ExternalId;
                }
            }

            timerInfo.Name = programInfo.Name;
            timerInfo.StartDate = programInfo.StartDate;
            timerInfo.EndDate = programInfo.EndDate.Value;

            if (!string.IsNullOrWhiteSpace(channelId))
            {
                timerInfo.ChannelId = channelId;
            }

            timerInfo.SeasonNumber = programInfo.ParentIndexNumber;
            timerInfo.EpisodeNumber = programInfo.IndexNumber;
            timerInfo.IsMovie = programInfo.IsMovie;
            timerInfo.IsKids = programInfo.IsKids;
            timerInfo.IsNews = programInfo.IsNews;
            timerInfo.IsSports = programInfo.IsSports;
            timerInfo.ProductionYear = programInfo.ProductionYear;
            timerInfo.EpisodeTitle = programInfo.EpisodeTitle;
            timerInfo.OriginalAirDate = programInfo.PremiereDate;
            timerInfo.IsProgramSeries = programInfo.IsSeries;

            timerInfo.IsSeries = programInfo.IsSeries;
            timerInfo.IsLive = programInfo.IsLive;
            timerInfo.IsPremiere = programInfo.IsPremiere;

            timerInfo.HomePageUrl = programInfo.HomePageUrl;
            timerInfo.CommunityRating = programInfo.CommunityRating;
            timerInfo.Overview = programInfo.Overview;
            timerInfo.OfficialRating = programInfo.OfficialRating;
            timerInfo.IsRepeat = programInfo.IsRepeat;
            timerInfo.SeriesId = programInfo.ExternalSeriesId;
        }

        private bool IsProgramAlreadyInLibrary(TimerInfo program)
        {
            if ((program.EpisodeNumber.HasValue && program.SeasonNumber.HasValue) || !string.IsNullOrWhiteSpace(program.EpisodeTitle))
            {
                var seriesIds = _libraryManager.GetItemIds(new InternalItemsQuery
                {
                    IncludeItemTypes = new[] { typeof(Series).Name },
                    Name = program.Name

                }).Select(i => i.ToString("N")).ToArray();

                if (seriesIds.Length == 0)
                {
                    return false;
                }

                if (program.EpisodeNumber.HasValue && program.SeasonNumber.HasValue)
                {
                    var result = _libraryManager.GetItemIds(new InternalItemsQuery
                    {
                        IncludeItemTypes = new[] { typeof(Episode).Name },
                        ParentIndexNumber = program.SeasonNumber.Value,
                        IndexNumber = program.EpisodeNumber.Value,
                        AncestorIds = seriesIds,
                        IsVirtualItem = false,
                        Limit = 1
                    });

                    if (result.Count > 0)
                    {
                        return true;
                    }
                }
            }

            return false;
        }

        private bool _disposed;
        public void Dispose()
        {
            _disposed = true;
            foreach (var pair in _activeRecordings.ToList())
            {
                pair.Value.CancellationTokenSource.Cancel();
            }
            GC.SuppressFinalize(this);
        }

        public List<VirtualFolderInfo> GetRecordingFolders()
        {
            var list = new List<VirtualFolderInfo>();

            var defaultFolder = RecordingPath;
            var defaultName = "Recordings";

            if (_fileSystem.DirectoryExists(defaultFolder))
            {
                list.Add(new VirtualFolderInfo
                {
                    Locations = new string[] { defaultFolder },
                    Name = defaultName
                });
            }

            var customPath = GetConfiguration().MovieRecordingPath;
            if ((!string.IsNullOrWhiteSpace(customPath) && !string.Equals(customPath, defaultFolder, StringComparison.OrdinalIgnoreCase)) && _fileSystem.DirectoryExists(customPath))
            {
                list.Add(new VirtualFolderInfo
                {
                    Locations = new string[] { customPath },
                    Name = "Recorded Movies",
                    CollectionType = CollectionType.Movies
                });
            }

            customPath = GetConfiguration().SeriesRecordingPath;
            if ((!string.IsNullOrWhiteSpace(customPath) && !string.Equals(customPath, defaultFolder, StringComparison.OrdinalIgnoreCase)) && _fileSystem.DirectoryExists(customPath))
            {
                list.Add(new VirtualFolderInfo
                {
                    Locations = new string[] { customPath },
                    Name = "Recorded Shows",
                    CollectionType = CollectionType.TvShows
                });
            }

            return list;
        }

        private const int TunerDiscoveryDurationMs = 3000;

        public async Task<List<TunerHostInfo>> DiscoverTuners(bool newDevicesOnly, CancellationToken cancellationToken)
        {
            var list = new List<TunerHostInfo>();

            var configuredDeviceIds = GetConfiguration().TunerHosts
               .Where(i => !string.IsNullOrWhiteSpace(i.DeviceId))
               .Select(i => i.DeviceId)
               .ToList();

            foreach (var host in _liveTvManager.TunerHosts)
            {
                var discoveredDevices = await DiscoverDevices(host, TunerDiscoveryDurationMs, cancellationToken).ConfigureAwait(false);

                if (newDevicesOnly)
                {
                    discoveredDevices = discoveredDevices.Where(d => !configuredDeviceIds.Contains(d.DeviceId, StringComparer.OrdinalIgnoreCase))
                            .ToList();
                }
                list.AddRange(discoveredDevices);
            }

            return list;
        }

        public async Task ScanForTunerDeviceChanges(CancellationToken cancellationToken)
        {
            foreach (var host in _liveTvManager.TunerHosts)
            {
                await ScanForTunerDeviceChanges(host, cancellationToken).ConfigureAwait(false);
            }
        }

        private async Task ScanForTunerDeviceChanges(ITunerHost host, CancellationToken cancellationToken)
        {
            var discoveredDevices = await DiscoverDevices(host, TunerDiscoveryDurationMs, cancellationToken).ConfigureAwait(false);

            var configuredDevices = GetConfiguration().TunerHosts
                .Where(i => string.Equals(i.Type, host.Type, StringComparison.OrdinalIgnoreCase))
                .ToList();

            foreach (var device in discoveredDevices)
            {
                var configuredDevice = configuredDevices.FirstOrDefault(i => string.Equals(i.DeviceId, device.DeviceId, StringComparison.OrdinalIgnoreCase));

                if (configuredDevice != null)
                {
                    if (!string.Equals(device.Url, configuredDevice.Url, StringComparison.OrdinalIgnoreCase))
                    {
                        _logger.Info("Tuner url has changed from {0} to {1}", configuredDevice.Url, device.Url);

                        configuredDevice.Url = device.Url;
                        await _liveTvManager.SaveTunerHost(configuredDevice).ConfigureAwait(false);
                    }
                }
            }
        }

        private async Task<List<TunerHostInfo>> DiscoverDevices(ITunerHost host, int discoveryDuationMs, CancellationToken cancellationToken)
        {
            try
            {
                var discoveredDevices = await host.DiscoverDevices(discoveryDuationMs, cancellationToken).ConfigureAwait(false);

                foreach (var device in discoveredDevices)
                {
                    _logger.Info("Discovered tuner device {0} at {1}", host.Name, device.Url);
                }

                return discoveredDevices;
            }
            catch (Exception ex)
            {
                _logger.ErrorException("Error discovering tuner devices", ex);

                return new List<TunerHostInfo>();
            }
        }
    }
    public static class ConfigurationExtension
    {
        public static XbmcMetadataOptions GetNfoConfiguration(this IConfigurationManager manager)
        {
            return manager.GetConfiguration<XbmcMetadataOptions>("xbmcmetadata");
        }
    }
}