using MediaBrowser.Controller.Channels;
using MediaBrowser.Controller.LiveTv;
using MediaBrowser.Controller.Plugins;
using MediaBrowser.Controller;
using Microsoft.Extensions.DependencyInjection;
using System.Net.Http;
using Jellyfin.Plugin.Enigma2.Helpers;
using MediaBrowser.Common.Configuration;
using System.IO;
using System.Linq;
using System.Xml;
using System.Xml.Linq;

namespace Jellyfin.Plugin.Enigma2
{
    public class ServiceRegistrator : IPluginServiceRegistrator
    {
        /// <inheritdoc />
        public void RegisterServices(IServiceCollection serviceCollection, IServerApplicationHost applicationHost)
        {
            serviceCollection.AddSingleton<InternetEpg>();
            serviceCollection.AddSingleton<LiveStreamProbe>();
            serviceCollection.AddSingleton<LiveStreamRelay>();
            serviceCollection.AddHttpContextAccessor();
            serviceCollection.AddSingleton<StartupMessages>();
            serviceCollection.AddSingleton<ContinuityStreams>();
            serviceCollection.AddSingleton<PlaybackFeedback>();
            serviceCollection.AddSingleton<PreferencesStore>();
            serviceCollection.AddTransient<Microsoft.AspNetCore.Hosting.IStartupFilter, NativeChannelFilter>();
            serviceCollection.AddSingleton<ILiveTvService, LiveTvService>();
            serviceCollection.AddSingleton<ChannelSyncTask>();
            serviceCollection.AddSingleton<MediaBrowser.Model.Tasks.IScheduledTask>(provider => provider.GetRequiredService<ChannelSyncTask>());
            // Jellyfin registers services before constructing Plugin.Instance.
            var paths = serviceCollection.Last(x => x.ServiceType == typeof(IApplicationPaths)).ImplementationInstance as IApplicationPaths;
            if (VuRecordingsEnabled(Path.Combine(paths.PluginConfigurationsPath, "Jellyfin.Plugin.Enigma2.xml")))
                serviceCollection.AddSingleton<IChannel, RecordingsChannel>();
        }

        public static bool VuRecordingsEnabled(string configurationPath)
        {
            if (!File.Exists(configurationPath)) return false;
            using var reader = XmlReader.Create(configurationPath, new XmlReaderSettings { DtdProcessing = DtdProcessing.Prohibit, XmlResolver = null });
            var value = XDocument.Load(reader).Root?.Element("EnableVuRecordings")?.Value;
            return bool.TryParse(value, out var enabled) && enabled;
        }
    }
}