jellyfin/MediaBrowser.Server.Implementations/Library/UserDataManager.cs
2015-02-17 13:42:46 -05:00

267 lines
8.6 KiB
C#

using System.Collections.Generic;
using MediaBrowser.Common.Events;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.Audio;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Persistence;
using MediaBrowser.Model.Dto;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Logging;
using System;
using System.Collections.Concurrent;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Server.Implementations.Library
{
/// <summary>
/// Class UserDataManager
/// </summary>
public class UserDataManager : IUserDataManager
{
public event EventHandler<UserDataSaveEventArgs> UserDataSaved;
private readonly ConcurrentDictionary<string, UserItemData> _userData = new ConcurrentDictionary<string, UserItemData>();
private readonly ILogger _logger;
private readonly IServerConfigurationManager _config;
public UserDataManager(ILogManager logManager, IServerConfigurationManager config)
{
_config = config;
_logger = logManager.GetLogger(GetType().Name);
}
/// <summary>
/// Gets or sets the repository.
/// </summary>
/// <value>The repository.</value>
public IUserDataRepository Repository { get; set; }
public async Task SaveUserData(Guid userId, IHasUserData item, UserItemData userData, UserDataSaveReason reason, CancellationToken cancellationToken)
{
if (userData == null)
{
throw new ArgumentNullException("userData");
}
if (item == null)
{
throw new ArgumentNullException("item");
}
if (userId == Guid.Empty)
{
throw new ArgumentNullException("userId");
}
cancellationToken.ThrowIfCancellationRequested();
var key = item.GetUserDataKey();
try
{
await Repository.SaveUserData(userId, key, userData, cancellationToken).ConfigureAwait(false);
var newValue = userData;
// Once it succeeds, put it into the dictionary to make it available to everyone else
_userData.AddOrUpdate(GetCacheKey(userId, key), newValue, delegate { return newValue; });
}
catch (Exception ex)
{
_logger.ErrorException("Error saving user data", ex);
throw;
}
EventHelper.FireEventIfNotNull(UserDataSaved, this, new UserDataSaveEventArgs
{
Key = key,
UserData = userData,
SaveReason = reason,
UserId = userId,
Item = item
}, _logger);
}
/// <summary>
/// Save the provided user data for the given user. Batch operation. Does not fire any events or update the cache.
/// </summary>
/// <param name="userId"></param>
/// <param name="userData"></param>
/// <param name="cancellationToken"></param>
/// <returns></returns>
public async Task SaveAllUserData(Guid userId, IEnumerable<UserItemData> userData, CancellationToken cancellationToken)
{
if (userData == null)
{
throw new ArgumentNullException("userData");
}
if (userId == Guid.Empty)
{
throw new ArgumentNullException("userId");
}
cancellationToken.ThrowIfCancellationRequested();
try
{
await Repository.SaveAllUserData(userId, userData, cancellationToken).ConfigureAwait(false);
}
catch (Exception ex)
{
_logger.ErrorException("Error saving user data", ex);
throw;
}
}
/// <summary>
/// Retrieve all user data for the given user
/// </summary>
/// <param name="userId"></param>
/// <returns></returns>
public IEnumerable<UserItemData> GetAllUserData(Guid userId)
{
if (userId == Guid.Empty)
{
throw new ArgumentNullException("userId");
}
return Repository.GetAllUserData(userId);
}
/// <summary>
/// Gets the user data.
/// </summary>
/// <param name="userId">The user id.</param>
/// <param name="key">The key.</param>
/// <returns>Task{UserItemData}.</returns>
public UserItemData GetUserData(Guid userId, string key)
{
if (userId == Guid.Empty)
{
throw new ArgumentNullException("userId");
}
if (string.IsNullOrEmpty(key))
{
throw new ArgumentNullException("key");
}
return _userData.GetOrAdd(GetCacheKey(userId, key), keyName => GetUserDataFromRepository(userId, key));
}
public UserItemData GetUserDataFromRepository(Guid userId, string key)
{
var data = Repository.GetUserData(userId, key);
return data;
}
/// <summary>
/// Gets the internal key.
/// </summary>
/// <param name="userId">The user id.</param>
/// <param name="key">The key.</param>
/// <returns>System.String.</returns>
private string GetCacheKey(Guid userId, string key)
{
return userId + key;
}
public UserItemDataDto GetUserDataDto(IHasUserData item, User user)
{
var userData = GetUserData(user.Id, item.GetUserDataKey());
var dto = GetUserItemDataDto(userData);
item.FillUserDataDtoValues(dto, userData, user);
return dto;
}
/// <summary>
/// Converts a UserItemData to a DTOUserItemData
/// </summary>
/// <param name="data">The data.</param>
/// <returns>DtoUserItemData.</returns>
/// <exception cref="System.ArgumentNullException"></exception>
private UserItemDataDto GetUserItemDataDto(UserItemData data)
{
if (data == null)
{
throw new ArgumentNullException("data");
}
return new UserItemDataDto
{
IsFavorite = data.IsFavorite,
Likes = data.Likes,
PlaybackPositionTicks = data.PlaybackPositionTicks,
PlayCount = data.PlayCount,
Rating = data.Rating,
Played = data.Played,
LastPlayedDate = data.LastPlayedDate,
Key = data.Key
};
}
public bool UpdatePlayState(BaseItem item, UserItemData data, long? reportedPositionTicks)
{
var playedToCompletion = false;
var positionTicks = reportedPositionTicks ?? item.RunTimeTicks ?? 0;
var hasRuntime = item.RunTimeTicks.HasValue && item.RunTimeTicks > 0;
// If a position has been reported, and if we know the duration
if (positionTicks > 0 && hasRuntime)
{
var pctIn = Decimal.Divide(positionTicks, item.RunTimeTicks.Value) * 100;
// Don't track in very beginning
if (pctIn < _config.Configuration.MinResumePct)
{
positionTicks = 0;
}
// If we're at the end, assume completed
else if (pctIn > _config.Configuration.MaxResumePct || positionTicks >= item.RunTimeTicks.Value)
{
positionTicks = 0;
data.Played = playedToCompletion = true;
}
else
{
// Enforce MinResumeDuration
var durationSeconds = TimeSpan.FromTicks(item.RunTimeTicks.Value).TotalSeconds;
if (durationSeconds < _config.Configuration.MinResumeDurationSeconds)
{
positionTicks = 0;
data.Played = playedToCompletion = true;
}
}
}
else if (!hasRuntime)
{
// If we don't know the runtime we'll just have to assume it was fully played
data.Played = playedToCompletion = true;
positionTicks = 0;
}
if (item is Audio)
{
positionTicks = 0;
}
data.PlaybackPositionTicks = positionTicks;
return playedToCompletion;
}
}
}