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using MediaBrowser.Common.Net;
using MediaBrowser.Controller.Session;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Serialization;
using MediaBrowser.Model.Session;
using MediaBrowser.Model.System;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Net;
using System.Threading;
using System.Threading.Tasks;
namespace Emby.Server.Implementations.Session
{
public class HttpSessionController : ISessionController
{
private readonly IHttpClient _httpClient;
private readonly IJsonSerializer _json;
private readonly ISessionManager _sessionManager;
public SessionInfo Session { get; private set; }
private readonly string _postUrl;
public HttpSessionController(IHttpClient httpClient,
IJsonSerializer json,
SessionInfo session,
string postUrl, ISessionManager sessionManager)
{
_httpClient = httpClient;
_json = json;
Session = session;
_postUrl = postUrl;
_sessionManager = sessionManager;
}
private string PostUrl => string.Format("http://{0}{1}", Session.RemoteEndPoint, _postUrl);
public bool IsSessionActive => (DateTime.UtcNow - Session.LastActivityDate).TotalMinutes <= 5;
public bool SupportsMediaControl => true;
private Task SendMessage(string name, string messageId, CancellationToken cancellationToken)
{
return SendMessage(name, messageId, new Dictionary<string, string>(), cancellationToken);
}
private Task SendMessage(string name, string messageId, Dictionary<string, string> args, CancellationToken cancellationToken)
{
args["messageId"] = messageId;
var url = PostUrl + "/" + name + ToQueryString(args);
return SendRequest(new HttpRequestOptions
{
Url = url,
CancellationToken = cancellationToken,
BufferContent = false
});
}
private Task SendPlayCommand(PlayRequest command, string messageId, CancellationToken cancellationToken)
{
var dict = new Dictionary<string, string>();
dict["ItemIds"] = string.Join(",", command.ItemIds.Select(i => i.ToString("N")).ToArray());
if (command.StartPositionTicks.HasValue)
{
dict["StartPositionTicks"] = command.StartPositionTicks.Value.ToString(CultureInfo.InvariantCulture);
}
if (command.AudioStreamIndex.HasValue)
{
dict["AudioStreamIndex"] = command.AudioStreamIndex.Value.ToString(CultureInfo.InvariantCulture);
}
if (command.SubtitleStreamIndex.HasValue)
{
dict["SubtitleStreamIndex"] = command.SubtitleStreamIndex.Value.ToString(CultureInfo.InvariantCulture);
}
if (command.StartIndex.HasValue)
{
dict["StartIndex"] = command.StartIndex.Value.ToString(CultureInfo.InvariantCulture);
}
if (!string.IsNullOrEmpty(command.MediaSourceId))
{
dict["MediaSourceId"] = command.MediaSourceId;
}
return SendMessage(command.PlayCommand.ToString(), messageId, dict, cancellationToken);
}
private Task SendPlaystateCommand(PlaystateRequest command, string messageId, CancellationToken cancellationToken)
{
var args = new Dictionary<string, string>();
if (command.Command == PlaystateCommand.Seek)
{
if (!command.SeekPositionTicks.HasValue)
{
throw new ArgumentException("SeekPositionTicks cannot be null");
}
args["SeekPositionTicks"] = command.SeekPositionTicks.Value.ToString(CultureInfo.InvariantCulture);
}
return SendMessage(command.Command.ToString(), messageId, args, cancellationToken);
}
private string[] _supportedMessages = new string[] { };
public Task SendMessage<T>(string name, string messageId, T data, ISessionController[] allControllers, CancellationToken cancellationToken)
{
if (!IsSessionActive)
{
return Task.CompletedTask;
}
if (string.Equals(name, "Play", StringComparison.OrdinalIgnoreCase))
{
return SendPlayCommand(data as PlayRequest, messageId, cancellationToken);
}
if (string.Equals(name, "PlayState", StringComparison.OrdinalIgnoreCase))
{
return SendPlaystateCommand(data as PlaystateRequest, messageId, cancellationToken);
}
if (string.Equals(name, "GeneralCommand", StringComparison.OrdinalIgnoreCase))
{
var command = data as GeneralCommand;
return SendMessage(command.Name, messageId, command.Arguments, cancellationToken);
}
if (!_supportedMessages.Contains(name, StringComparer.OrdinalIgnoreCase))
{
return Task.CompletedTask;
}
var url = PostUrl + "/" + name;
url += "?messageId=" + messageId;
var options = new HttpRequestOptions
{
Url = url,
CancellationToken = cancellationToken,
BufferContent = false
};
if (data != null)
{
if (typeof(T) == typeof(string))
{
var str = data as string;
if (!string.IsNullOrEmpty(str))
{
options.RequestContent = str;
options.RequestContentType = "application/json";
}
}
else
{
options.RequestContent = _json.SerializeToString(data);
options.RequestContentType = "application/json";
}
}
return SendRequest(options);
}
private async Task SendRequest(HttpRequestOptions options)
{
using (var response = await _httpClient.Post(options).ConfigureAwait(false))
{
}
}
private static string ToQueryString(Dictionary<string, string> nvc)
{
var array = (from item in nvc
select string.Format("{0}={1}", WebUtility.UrlEncode(item.Key), WebUtility.UrlEncode(item.Value)))
.ToArray();
var args = string.Join("&", array);
if (string.IsNullOrEmpty(args))
{
return args;
}
return "?" + args;
}
}
}
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