jellyfin/Emby.Server.Implementations/LiveTv/Listings/XmlTvListingsProvider.cs
2018-12-30 22:49:09 +01:00

304 lines
12 KiB
C#

using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Emby.XmlTv.Classes;
using Emby.XmlTv.Entities;
using MediaBrowser.Common.Extensions;
using MediaBrowser.Common.Net;
using MediaBrowser.Common.Progress;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.LiveTv;
using MediaBrowser.Model.Dto;
using MediaBrowser.Model.IO;
using MediaBrowser.Model.LiveTv;
using Microsoft.Extensions.Logging;
namespace Jellyfin.Server.Implementations.LiveTv.Listings
{
public class XmlTvListingsProvider : IListingsProvider
{
private readonly IServerConfigurationManager _config;
private readonly IHttpClient _httpClient;
private readonly ILogger _logger;
private readonly IFileSystem _fileSystem;
private readonly IZipClient _zipClient;
public XmlTvListingsProvider(IServerConfigurationManager config, IHttpClient httpClient, ILogger logger, IFileSystem fileSystem, IZipClient zipClient)
{
_config = config;
_httpClient = httpClient;
_logger = logger;
_fileSystem = fileSystem;
_zipClient = zipClient;
}
public string Name
{
get { return "XmlTV"; }
}
public string Type
{
get { return "xmltv"; }
}
private string GetLanguage(ListingsProviderInfo info)
{
if (!string.IsNullOrWhiteSpace(info.PreferredLanguage))
{
return info.PreferredLanguage;
}
return _config.Configuration.PreferredMetadataLanguage;
}
private async Task<string> GetXml(string path, CancellationToken cancellationToken)
{
_logger.LogInformation("xmltv path: {path}", path);
if (!path.StartsWith("http", StringComparison.OrdinalIgnoreCase))
{
return UnzipIfNeeded(path, path);
}
string cacheFilename = DateTime.UtcNow.DayOfYear.ToString(CultureInfo.InvariantCulture) + "-" + DateTime.UtcNow.Hour.ToString(CultureInfo.InvariantCulture) + ".xml";
string cacheFile = Path.Combine(_config.ApplicationPaths.CachePath, "xmltv", cacheFilename);
if (_fileSystem.FileExists(cacheFile))
{
return UnzipIfNeeded(path, cacheFile);
}
_logger.LogInformation("Downloading xmltv listings from {path}", path);
string tempFile = await _httpClient.GetTempFile(new HttpRequestOptions
{
CancellationToken = cancellationToken,
Url = path,
Progress = new SimpleProgress<Double>(),
DecompressionMethod = CompressionMethod.Gzip,
// It's going to come back gzipped regardless of this value
// So we need to make sure the decompression method is set to gzip
EnableHttpCompression = true,
UserAgent = "Emby/3.0"
}).ConfigureAwait(false);
_fileSystem.CreateDirectory(_fileSystem.GetDirectoryName(cacheFile));
_fileSystem.CopyFile(tempFile, cacheFile, true);
return UnzipIfNeeded(path, cacheFile);
}
private string UnzipIfNeeded(string originalUrl, string file)
{
string ext = Path.GetExtension(originalUrl.Split('?')[0]);
if (string.Equals(ext, ".gz", StringComparison.OrdinalIgnoreCase))
{
try
{
string tempFolder = ExtractGz(file);
return FindXmlFile(tempFolder);
}
catch (Exception ex)
{
_logger.LogError(ex, "Error extracting from gz file {file}", file);
}
try
{
string tempFolder = ExtractFirstFileFromGz(file);
return FindXmlFile(tempFolder);
}
catch (Exception ex)
{
_logger.LogError(ex, "Error extracting from zip file {file}", file);
}
}
return file;
}
private string ExtractFirstFileFromGz(string file)
{
using (var stream = _fileSystem.OpenRead(file))
{
string tempFolder = Path.Combine(_config.ApplicationPaths.TempDirectory, Guid.NewGuid().ToString());
_fileSystem.CreateDirectory(tempFolder);
_zipClient.ExtractFirstFileFromGz(stream, tempFolder, "data.xml");
return tempFolder;
}
}
private string ExtractGz(string file)
{
using (var stream = _fileSystem.OpenRead(file))
{
string tempFolder = Path.Combine(_config.ApplicationPaths.TempDirectory, Guid.NewGuid().ToString());
_fileSystem.CreateDirectory(tempFolder);
_zipClient.ExtractAllFromGz(stream, tempFolder, true);
return tempFolder;
}
}
private string FindXmlFile(string directory)
{
return _fileSystem.GetFiles(directory, true)
.Where(i => string.Equals(i.Extension, ".xml", StringComparison.OrdinalIgnoreCase))
.Select(i => i.FullName)
.FirstOrDefault();
}
public async Task<IEnumerable<ProgramInfo>> GetProgramsAsync(ListingsProviderInfo info, string channelId, DateTime startDateUtc, DateTime endDateUtc, CancellationToken cancellationToken)
{
if (string.IsNullOrWhiteSpace(channelId))
{
throw new ArgumentNullException("channelId");
}
/*
if (!await EmbyTV.EmbyTVRegistration.Instance.EnableXmlTv().ConfigureAwait(false))
{
var length = endDateUtc - startDateUtc;
if (length.TotalDays > 1)
{
endDateUtc = startDateUtc.AddDays(1);
}
}*/
_logger.LogDebug("Getting xmltv programs for channel {id}", channelId);
string path = await GetXml(info.Path, cancellationToken).ConfigureAwait(false);
_logger.LogDebug("Opening XmlTvReader for {path}", path);
var reader = new XmlTvReader(path, GetLanguage(info));
return reader.GetProgrammes(channelId, startDateUtc, endDateUtc, cancellationToken)
.Select(p => GetProgramInfo(p, info));
}
private ProgramInfo GetProgramInfo(XmlTvProgram program, ListingsProviderInfo info)
{
string episodeTitle = program.Episode?.Title;
var programInfo = new ProgramInfo
{
ChannelId = program.ChannelId,
EndDate = program.EndDate.UtcDateTime,
EpisodeNumber = program.Episode?.Episode,
EpisodeTitle = episodeTitle,
Genres = program.Categories,
StartDate = program.StartDate.UtcDateTime,
Name = program.Title,
Overview = program.Description,
ProductionYear = program.CopyrightDate?.Year,
SeasonNumber = program.Episode?.Series,
IsSeries = program.Episode != null,
IsRepeat = program.IsPreviouslyShown && !program.IsNew,
IsPremiere = program.Premiere != null,
IsKids = program.Categories.Any(c => info.KidsCategories.Contains(c, StringComparer.OrdinalIgnoreCase)),
IsMovie = program.Categories.Any(c => info.MovieCategories.Contains(c, StringComparer.OrdinalIgnoreCase)),
IsNews = program.Categories.Any(c => info.NewsCategories.Contains(c, StringComparer.OrdinalIgnoreCase)),
IsSports = program.Categories.Any(c => info.SportsCategories.Contains(c, StringComparer.OrdinalIgnoreCase)),
ImageUrl = program.Icon != null && !String.IsNullOrEmpty(program.Icon.Source) ? program.Icon.Source : null,
HasImage = program.Icon != null && !String.IsNullOrEmpty(program.Icon.Source),
OfficialRating = program.Rating != null && !String.IsNullOrEmpty(program.Rating.Value) ? program.Rating.Value : null,
CommunityRating = program.StarRating,
SeriesId = program.Episode == null ? null : program.Title.GetMD5().ToString("N")
};
if (string.IsNullOrWhiteSpace(program.ProgramId))
{
string uniqueString = (program.Title ?? string.Empty) + (episodeTitle ?? string.Empty) /*+ (p.IceTvEpisodeNumber ?? string.Empty)*/;
if (programInfo.SeasonNumber.HasValue)
{
uniqueString = "-" + programInfo.SeasonNumber.Value.ToString(CultureInfo.InvariantCulture);
}
if (programInfo.EpisodeNumber.HasValue)
{
uniqueString = "-" + programInfo.EpisodeNumber.Value.ToString(CultureInfo.InvariantCulture);
}
programInfo.ShowId = uniqueString.GetMD5().ToString("N");
// If we don't have valid episode info, assume it's a unique program, otherwise recordings might be skipped
if (programInfo.IsSeries
&& !programInfo.IsRepeat
&& (programInfo.EpisodeNumber ?? 0) == 0)
{
programInfo.ShowId = programInfo.ShowId + programInfo.StartDate.Ticks.ToString(CultureInfo.InvariantCulture);
}
}
else
{
programInfo.ShowId = program.ProgramId;
}
// Construct an id from the channel and start date
programInfo.Id = String.Format("{0}_{1:O}", program.ChannelId, program.StartDate);
if (programInfo.IsMovie)
{
programInfo.IsSeries = false;
programInfo.EpisodeNumber = null;
programInfo.EpisodeTitle = null;
}
return programInfo;
}
public Task Validate(ListingsProviderInfo info, bool validateLogin, bool validateListings)
{
// Assume all urls are valid. check files for existence
if (!info.Path.StartsWith("http", StringComparison.OrdinalIgnoreCase) && !_fileSystem.FileExists(info.Path))
{
throw new FileNotFoundException("Could not find the XmlTv file specified:", info.Path);
}
return Task.CompletedTask;
}
public async Task<List<NameIdPair>> GetLineups(ListingsProviderInfo info, string country, string location)
{
// In theory this should never be called because there is always only one lineup
string path = await GetXml(info.Path, CancellationToken.None).ConfigureAwait(false);
_logger.LogDebug("Opening XmlTvReader for {path}", path);
var reader = new XmlTvReader(path, GetLanguage(info));
IEnumerable<XmlTvChannel> results = reader.GetChannels();
// Should this method be async?
return results.Select(c => new NameIdPair() { Id = c.Id, Name = c.DisplayName }).ToList();
}
public async Task<List<ChannelInfo>> GetChannels(ListingsProviderInfo info, CancellationToken cancellationToken)
{
// In theory this should never be called because there is always only one lineup
string path = await GetXml(info.Path, cancellationToken).ConfigureAwait(false);
_logger.LogDebug("Opening XmlTvReader for {path}", path);
var reader = new XmlTvReader(path, GetLanguage(info));
IEnumerable<XmlTvChannel> results = reader.GetChannels();
// Should this method be async?
return results.Select(c => new ChannelInfo
{
Id = c.Id,
Name = c.DisplayName,
ImageUrl = c.Icon != null && !String.IsNullOrEmpty(c.Icon.Source) ? c.Icon.Source : null,
Number = string.IsNullOrWhiteSpace(c.Number) ? c.Id : c.Number
}).ToList();
}
}
}