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using MediaBrowser.Common.Extensions;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Notifications;
using MediaBrowser.Model.Configuration;
using MediaBrowser.Model.Logging;
using MediaBrowser.Model.Notifications;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Server.Implementations.Notifications
{
public class NotificationManager : INotificationManager
{
private readonly ILogger _logger;
private readonly IUserManager _userManager;
private readonly IServerConfigurationManager _config;
private INotificationService[] _services;
private INotificationTypeFactory[] _typeFactories;
public NotificationManager(ILogManager logManager, IUserManager userManager, IServerConfigurationManager config)
{
_userManager = userManager;
_config = config;
_logger = logManager.GetLogger(GetType().Name);
}
public Task SendNotification(NotificationRequest request, CancellationToken cancellationToken)
{
var notificationType = request.NotificationType;
var options = string.IsNullOrWhiteSpace(notificationType) ?
null :
_config.Configuration.NotificationOptions.GetOptions(notificationType);
var users = GetUserIds(request, options).Select(i => _userManager.GetUserById(new Guid(i)));
var title = GetTitle(request, options);
var tasks = _services.Where(i => IsEnabled(i, notificationType))
.Select(i => SendNotification(request, i, users, title, cancellationToken));
return Task.WhenAll(tasks);
}
private Task SendNotification(NotificationRequest request,
INotificationService service,
IEnumerable<User> users,
string title,
CancellationToken cancellationToken)
{
users = users.Where(i => IsEnabledForUser(service, i))
.ToList();
var tasks = users.Select(i => SendNotification(request, service, title, i, cancellationToken));
return Task.WhenAll(tasks);
}
private IEnumerable<string> GetUserIds(NotificationRequest request, NotificationOption options)
{
if (request.SendToUserMode.HasValue)
{
switch (request.SendToUserMode.Value)
{
case SendToUserType.Admins:
return _userManager.Users.Where(i => i.Configuration.IsAdministrator)
.Select(i => i.Id.ToString("N"));
case SendToUserType.All:
return _userManager.Users.Select(i => i.Id.ToString("N"));
case SendToUserType.Custom:
return request.UserIds;
default:
throw new ArgumentException("Unrecognized SendToUserMode: " + request.SendToUserMode.Value);
}
}
if (options != null)
{
switch (options.SendToUserMode)
{
case SendToUserType.Admins:
return _userManager.Users.Where(i => i.Configuration.IsAdministrator)
.Select(i => i.Id.ToString("N"));
case SendToUserType.All:
return _userManager.Users.Select(i => i.Id.ToString("N"));
case SendToUserType.Custom:
return options.SendToUsers;
default:
throw new ArgumentException("Unrecognized SendToUserMode: " + options.SendToUserMode);
}
}
return new List<string>();
}
private async Task SendNotification(NotificationRequest request,
INotificationService service,
string title,
User user,
CancellationToken cancellationToken)
{
var notification = new UserNotification
{
Date = request.Date,
Description = request.Description,
Level = request.Level,
Name = title,
Url = request.Url,
User = user
};
_logger.Debug("Sending notification via {0} to user {1}", service.Name, user.Name);
try
{
await service.SendNotification(notification, cancellationToken).ConfigureAwait(false);
}
catch (Exception ex)
{
_logger.ErrorException("Error sending notification to {0}", ex, service.Name);
}
}
private string GetTitle(NotificationRequest request, NotificationOption options)
{
var title = request.Name;
// If empty, grab from options
if (string.IsNullOrEmpty(title))
{
if (!string.IsNullOrEmpty(request.NotificationType))
{
if (options != null)
{
title = options.Title;
}
}
}
// If still empty, grab default
if (string.IsNullOrEmpty(title))
{
if (!string.IsNullOrEmpty(request.NotificationType))
{
var info = GetNotificationTypes().FirstOrDefault(i => string.Equals(i.Type, request.NotificationType, StringComparison.OrdinalIgnoreCase));
if (info != null)
{
title = info.DefaultTitle;
}
}
}
title = title ?? string.Empty;
foreach (var pair in request.Variables)
{
var token = "{" + pair.Key + "}";
title = title.Replace(token, pair.Value, StringComparison.OrdinalIgnoreCase);
}
return title;
}
private bool IsEnabledForUser(INotificationService service, User user)
{
try
{
return service.IsEnabledForUser(user);
}
catch (Exception ex)
{
_logger.ErrorException("Error in IsEnabledForUser", ex);
return false;
}
}
private bool IsEnabled(INotificationService service, string notificationType)
{
return string.IsNullOrEmpty(notificationType) ||
_config.Configuration.NotificationOptions.IsServiceEnabled(service.Name, notificationType);
}
public void AddParts(IEnumerable<INotificationService> services, IEnumerable<INotificationTypeFactory> notificationTypeFactories)
{
_services = services.ToArray();
_typeFactories = notificationTypeFactories.ToArray();
}
public IEnumerable<NotificationTypeInfo> GetNotificationTypes()
{
var list = _typeFactories.Select(i =>
{
try
{
return i.GetNotificationTypes().ToList();
}
catch (Exception ex)
{
_logger.ErrorException("Error in GetNotificationTypes", ex);
return new List<NotificationTypeInfo>();
}
}).SelectMany(i => i).ToList();
foreach (var i in list)
{
i.Enabled = _config.Configuration.NotificationOptions.IsEnabled(i.Type);
}
return list;
}
public IEnumerable<NotificationServiceInfo> GetNotificationServices()
{
return _services.Select(i => new NotificationServiceInfo
{
Name = i.Name,
Id = i.Name.GetMD5().ToString("N")
}).OrderBy(i => i.Name);
}
}
}
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