jellyfin-server/MediaBrowser.Providers/Movies/MovieUpdatesPrescanTask.cs
2014-02-11 23:29:13 -05:00

248 lines
9.2 KiB
C#

using MediaBrowser.Common.IO;
using MediaBrowser.Common.Net;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.Movies;
using MediaBrowser.Controller.Library;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Logging;
using MediaBrowser.Model.Serialization;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Providers.Movies
{
public class MovieUpdatesPreScanTask : ILibraryPostScanTask
{
/// <summary>
/// The updates URL
/// </summary>
private const string UpdatesUrl = "http://api.themoviedb.org/3/movie/changes?start_date={0}&api_key={1}&page={2}";
/// <summary>
/// The _HTTP client
/// </summary>
private readonly IHttpClient _httpClient;
/// <summary>
/// The _logger
/// </summary>
private readonly ILogger _logger;
/// <summary>
/// The _config
/// </summary>
private readonly IServerConfigurationManager _config;
private readonly IJsonSerializer _json;
private readonly IFileSystem _fileSystem;
private readonly ILibraryManager _libraryManager;
/// <summary>
/// Initializes a new instance of the <see cref="MovieUpdatesPreScanTask"/> class.
/// </summary>
/// <param name="logger">The logger.</param>
/// <param name="httpClient">The HTTP client.</param>
/// <param name="config">The config.</param>
/// <param name="json">The json.</param>
public MovieUpdatesPreScanTask(ILogger logger, IHttpClient httpClient, IServerConfigurationManager config, IJsonSerializer json, IFileSystem fileSystem, ILibraryManager libraryManager)
{
_logger = logger;
_httpClient = httpClient;
_config = config;
_json = json;
_fileSystem = fileSystem;
_libraryManager = libraryManager;
}
protected readonly CultureInfo UsCulture = new CultureInfo("en-US");
/// <summary>
/// Runs the specified progress.
/// </summary>
/// <param name="progress">The progress.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
public async Task Run(IProgress<double> progress, CancellationToken cancellationToken)
{
if (!_config.Configuration.EnableTmdbUpdates)
{
progress.Report(100);
return;
}
var path = MovieDbProvider.GetMoviesDataPath(_config.CommonApplicationPaths);
Directory.CreateDirectory(path);
var timestampFile = Path.Combine(path, "time.txt");
var timestampFileInfo = new FileInfo(timestampFile);
// Don't check for updates every single time
if (timestampFileInfo.Exists && (DateTime.UtcNow - _fileSystem.GetLastWriteTimeUtc(timestampFileInfo)).TotalDays < 7)
{
return;
}
// Find out the last time we queried tvdb for updates
var lastUpdateTime = timestampFileInfo.Exists ? File.ReadAllText(timestampFile, Encoding.UTF8) : string.Empty;
var existingDirectories = Directory.EnumerateDirectories(path).Select(Path.GetFileName).ToList();
if (!string.IsNullOrEmpty(lastUpdateTime))
{
long lastUpdateTicks;
if (long.TryParse(lastUpdateTime, NumberStyles.Any, UsCulture, out lastUpdateTicks))
{
var lastUpdateDate = new DateTime(lastUpdateTicks, DateTimeKind.Utc);
// They only allow up to 14 days of updates
if ((DateTime.UtcNow - lastUpdateDate).TotalDays > 13)
{
lastUpdateDate = DateTime.UtcNow.AddDays(-13);
}
var updatedIds = await GetIdsToUpdate(lastUpdateDate, 1, cancellationToken).ConfigureAwait(false);
var existingDictionary = existingDirectories.ToDictionary(i => i, StringComparer.OrdinalIgnoreCase);
var idsToUpdate = updatedIds.Where(i => !string.IsNullOrWhiteSpace(i) && existingDictionary.ContainsKey(i));
await UpdateMovies(idsToUpdate, progress, cancellationToken).ConfigureAwait(false);
}
}
File.WriteAllText(timestampFile, DateTime.UtcNow.Ticks.ToString(UsCulture), Encoding.UTF8);
progress.Report(100);
}
/// <summary>
/// Gets the ids to update.
/// </summary>
/// <param name="lastUpdateTime">The last update time.</param>
/// <param name="page">The page.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task{IEnumerable{System.String}}.</returns>
private async Task<IEnumerable<string>> GetIdsToUpdate(DateTime lastUpdateTime, int page, CancellationToken cancellationToken)
{
bool hasMorePages;
var list = new List<string>();
// First get last time
using (var stream = await _httpClient.Get(new HttpRequestOptions
{
Url = string.Format(UpdatesUrl, lastUpdateTime.ToString("yyyy-MM-dd"), MovieDbProvider.ApiKey, page),
CancellationToken = cancellationToken,
EnableHttpCompression = true,
ResourcePool = MovieDbProvider.Current.MovieDbResourcePool,
AcceptHeader = MovieDbProvider.AcceptHeader
}).ConfigureAwait(false))
{
var obj = _json.DeserializeFromStream<RootObject>(stream);
var data = obj.results.Select(i => i.id.ToString(UsCulture));
list.AddRange(data);
hasMorePages = page < obj.total_pages;
}
if (hasMorePages)
{
var more = await GetIdsToUpdate(lastUpdateTime, page + 1, cancellationToken).ConfigureAwait(false);
list.AddRange(more);
}
return list;
}
/// <summary>
/// Updates the movies.
/// </summary>
/// <param name="ids">The ids.</param>
/// <param name="progress">The progress.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
private async Task UpdateMovies(IEnumerable<string> ids, IProgress<double> progress, CancellationToken cancellationToken)
{
var list = ids.ToList();
var numComplete = 0;
// Gather all movies into a lookup by tmdb id
var allMovies = _libraryManager.RootFolder.RecursiveChildren
.Where(i => i is Movie || i is Trailer)
.Where(i => !string.IsNullOrEmpty(i.GetProviderId(MetadataProviders.Tmdb)))
.ToLookup(i => i.GetProviderId(MetadataProviders.Tmdb));
foreach (var id in list)
{
// Find the preferred language(s) for the movie in the library
var languages = allMovies[id]
.Select(i => i.GetPreferredMetadataLanguage())
.Distinct(StringComparer.OrdinalIgnoreCase)
.ToList();
foreach (var language in languages)
{
try
{
await UpdateMovie(id, language, cancellationToken).ConfigureAwait(false);
}
catch (Exception ex)
{
_logger.ErrorException("Error updating tmdb movie id {0}, language {1}", ex, id, language);
}
}
numComplete++;
double percent = numComplete;
percent /= list.Count;
percent *= 100;
progress.Report(percent);
}
}
/// <summary>
/// Updates the movie.
/// </summary>
/// <param name="id">The id.</param>
/// <param name="preferredMetadataLanguage">The preferred metadata language.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
private Task UpdateMovie(string id, string preferredMetadataLanguage, CancellationToken cancellationToken)
{
_logger.Info("Updating movie from tmdb " + id + ", language " + preferredMetadataLanguage);
return MovieDbProvider.Current.DownloadMovieInfo(id, preferredMetadataLanguage, cancellationToken);
}
class Result
{
public int id { get; set; }
public bool? adult { get; set; }
}
class RootObject
{
public List<Result> results { get; set; }
public int page { get; set; }
public int total_pages { get; set; }
public int total_results { get; set; }
public RootObject()
{
results = new List<Result>();
}
}
}
}