using System;
using Jellyfin.Plugin.Enigma2;
using System.IO;
using System.Reflection;
using System.Security.Claims;
using System.Text.Json.Nodes;
using System.Threading;
using System.Linq;
using Jellyfin.Data;
using Jellyfin.Database.Implementations.Entities;
using Jellyfin.Database.Implementations.Enums;
using Jellyfin.Plugin.Enigma2.Configuration;
using MediaBrowser.Common.Configuration;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.LiveTv;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.DependencyInjection;
var time=DateTime.UtcNow;
void Check(bool ok,string name){if(!ok)throw new Exception(name);Console.WriteLine("PASS "+name);}
var entry=new InternetEpg.Entry("Barwy szczęścia",time,"https://ptv-prod.wphcdn.cloud/media/a.jpg");
Check(InternetEpg.Match(new[]{entry},"Barwy szczęścia",time.AddMinutes(5))==entry,"matching channel programme time");
Check(InternetEpg.Match(new[]{entry},"Inny program",time)==null,"reject different title");
Check(InternetEpg.Match(new[]{entry},entry.Title,time.AddMinutes(8))==null,"reject distant emission");
Check(InternetEpg.Match(new[]{entry,entry},entry.Title,time)==null,"reject ambiguous emission");
Check(InternetEpg.ChannelKey("TVP 2 HD")==InternetEpg.ChannelKey("TVP 2"),"HD channel alias");
Check(!InternetEpg.AllowedImage("http://127.0.0.1/a"),"reject local image URL");
Check(!InternetEpg.AllowedImage("https://ptv-prod.wphcdn.cloud.evil.example/a"),"exact artwork provider host");
Check(InternetEpg.AllowedImage(entry.Image),"real provider image");
var prefs=new ChannelPreferences{FavoriteIds=new[]{Guid.NewGuid().ToString(),"../other-user"},DefaultView="invalid"};prefs.Validate();
Check(prefs.FavoriteIds.Length==1 && prefs.DefaultView=="all","preference input validation");
var legacyConfiguration=(PluginConfiguration)new System.Xml.Serialization.XmlSerializer(typeof(PluginConfiguration)).Deserialize(new StringReader("<PluginConfiguration><HostName>receiver</HostName></PluginConfiguration>"));
Check(legacyConfiguration.PreferH264ForWebLiveTv,"legacy configuration defaults to web H264 preference");
var ownedChannel=new LiveTvChannel{Id=Guid.NewGuid(),ServiceName="Enigma2"};
var policy=WebPlaybackPolicy.For(ownedChannel,true);
Check(policy.IsEnigmaChannel&&policy.PreferH264,"web codec policy recognizes native Enigma service");
policy=WebPlaybackPolicy.For(ownedChannel,false);
Check(policy.IsEnigmaChannel&&!policy.PreferH264,"disabled web codec policy preserves native negotiation");
Check(!WebPlaybackPolicy.For(new LiveTvChannel{ServiceName="OtherProvider"},true).PreferH264&&!WebPlaybackPolicy.For(new Video{ServiceName="Enigma2"},true).PreferH264&&!WebPlaybackPolicy.For(null,true).PreferH264,"web codec policy excludes other providers, movies and missing items");
var policyUser=new User("policy-test","test-auth","test-reset");policyUser.SetPermission(PermissionKind.EnableLiveTvAccess,true);
var userManager=DispatchProxy.Create<IUserManager,PolicyUserProxy>();((PolicyUserProxy)(object)userManager).Current=policyUser;
var libraryManager=DispatchProxy.Create<ILibraryManager,PolicyLibraryProxy>();var libraryProxy=(PolicyLibraryProxy)(object)libraryManager;libraryProxy.Current=policyUser;libraryProxy.Item=ownedChannel;
var policyContext=new DefaultHttpContext();policyContext.User=new ClaimsPrincipal(new ClaimsIdentity(new[]{new Claim("Jellyfin-UserId",policyUser.Id.ToString())},"test"));policyContext.Request.QueryString=new QueryString("?userId="+Guid.NewGuid());
var policyController=new PreferencesController(null,null,null,null,libraryManager,userManager){ControllerContext=new ControllerContext{HttpContext=policyContext}};
Check(policyController.GetWebPlaybackPolicy(ownedChannel.Id).Value.IsEnigmaChannel&&libraryProxy.Calls==1,"web policy uses native user-filtered lookup for authenticated owner");
libraryProxy.Item=null;policy=policyController.GetWebPlaybackPolicy(ownedChannel.Id).Value;Check(!policy.IsEnigmaChannel&&!policy.PreferH264,"native visibility denial leaves web profile unchanged");
policyUser.SetPermission(PermissionKind.EnableLiveTvAccess,false);Check(policyController.GetWebPlaybackPolicy(ownedChannel.Id).Result is ForbidResult&&libraryProxy.Calls==2,"web policy denies user without live TV permission before item lookup");
((PolicyUserProxy)(object)userManager).Current=null;Check(policyController.GetWebPlaybackPolicy(ownedChannel.Id).Result is UnauthorizedResult&&libraryProxy.Calls==2,"web policy rejects deleted user without unrestricted native lookup");
policyContext.User=new ClaimsPrincipal();Check(policyController.GetWebPlaybackPolicy(ownedChannel.Id).Result is UnauthorizedResult,"web policy requires authenticated user claim");
var folder=Path.Combine(Path.GetTempPath(),"decoder-tests-"+Guid.NewGuid().ToString("N"));
var paths=DispatchProxy.Create<IApplicationPaths,PathsProxy>();((PathsProxy)(object)paths).Folder=folder;
try
{
 Directory.CreateDirectory(folder);var config=Path.Combine(folder,"Jellyfin.Plugin.Enigma2.xml");
 var registration=new ServiceCollection().AddSingleton(paths);new ServiceRegistrator().RegisterServices(registration,null);
 Check(!System.Linq.Enumerable.Any(registration,x=>x.ServiceType==typeof(MediaBrowser.Controller.Channels.IChannel)),"startup before Plugin.Instance: recordings disabled by default");
 File.WriteAllText(config,"<PluginConfiguration><EnableVuRecordings>true</EnableVuRecordings></PluginConfiguration>");
 registration=new ServiceCollection().AddSingleton(paths);new ServiceRegistrator().RegisterServices(registration,null);
 Check(System.Linq.Enumerable.Any(registration,x=>x.ServiceType==typeof(MediaBrowser.Controller.Channels.IChannel)),"startup recordings enabled from persisted configuration");
 File.WriteAllText(config,"<PluginConfiguration><EnableVuRecordings>false</EnableVuRecordings></PluginConfiguration>");
 Check(!ServiceRegistrator.VuRecordingsEnabled(config),"explicit recordings disabled");
 var store=new PreferencesStore(paths);var user=Guid.NewGuid();var a=Guid.NewGuid().ToString("N");var b=Guid.NewGuid().ToString("N");
 await store.Save(user,new ChannelPreferences{HiddenIds=new[]{a},OrderedIds=new[]{b,a}},CancellationToken.None);
 var provider=new ServiceCollection().AddLogging().AddSingleton(store).BuildServiceProvider();
 async System.Threading.Tasks.Task<JsonNode> Request(Guid current,string query)
 {
  var app=new ApplicationBuilder(provider);
  new NativeChannelFilter().Configure(next=>next.Run(async ctx=>{
   Check(!ctx.Request.Headers.ContainsKey("Accept-Encoding"),"native buffered JSON is uncompressed");
   Check(!ctx.Request.Query.ContainsKey("Limit"),"pagination applied after native permission query");
   ctx.User=new ClaimsPrincipal(new ClaimsIdentity(new[]{new Claim("Jellyfin-UserId",current.ToString())},"test"));
   ctx.Response.ContentType="application/json";
   await ctx.Response.WriteAsync(new JsonObject{["Items"]=new JsonArray(new JsonObject{["Id"]=a},new JsonObject{["Id"]=b}),["TotalRecordCount"]=2}.ToJsonString());
  }))(app);
  var context=new DefaultHttpContext{RequestServices=provider};context.Request.Headers.AcceptEncoding="gzip, br";context.Request.Method="GET";context.Request.Path="/LiveTv/Channels";context.Request.QueryString=new QueryString(query);context.Response.Body=new MemoryStream();
  await app.Build()(context);Check(context.Request.Headers.AcceptEncoding=="gzip, br","restore compression request header");context.Response.Body.Position=0;return await JsonNode.ParseAsync(context.Response.Body);
 }
 var result=await Request(user,"?Limit=1");Check((int)result["TotalRecordCount"]==1&&(string)result["Items"][0]["Id"]==b,"native hidden and channel order");
 result=await Request(user,"?Limit=0");Check(result["Items"].AsArray().Count==0&&(int)result["TotalRecordCount"]==1,"native zero-limit count");
 result=await Request(Guid.NewGuid(),"?StartIndex=1&Limit=1");Check((int)result["TotalRecordCount"]==2&&(string)result["Items"][0]["Id"]==b,"native user preference isolation and pagination");
 result=await Request(user,"?UserId="+Guid.NewGuid()+"&Limit=1");Check((int)result["TotalRecordCount"]==1,"query cannot replace authenticated preference owner");
 result=await Request(user,"?DecoderIncludeHidden=true&Limit=2");Check((int)result["TotalRecordCount"]==2,"preference editor can restore hidden channels");
}
finally { if(Directory.Exists(folder))Directory.Delete(folder,true); }
var probeJson="""{"streams":[{"index":0,"codec_type":"video","codec_name":"h264","width":1920,"height":1080,"field_order":"tt","avg_frame_rate":"25/1"},{"index":1,"codec_type":"audio","codec_name":"mp2","channels":2,"sample_rate":"48000"}]}""";
var calls=0;
var sharedProbe=new LiveStreamProbe(async (url,token)=>{Interlocked.Increment(ref calls);await System.Threading.Tasks.Task.Delay(100,token);return probeJson;});
var probes=await System.Threading.Tasks.Task.WhenAll(System.Linq.Enumerable.Range(0,4).Select(_=>sharedProbe.Get("channel",CancellationToken.None)));
Check(calls==1&&probes.All(x=>x.Count==2),"four simultaneous requests share one upstream probe");
Check(probes[0][0].Index==0&&probes[0][0].IsInterlaced&&probes[0][0].AverageFrameRate==25,"real stream indexes and interlacing preserved");
await sharedProbe.Get("channel",CancellationToken.None);Check(calls==1,"successful probe cached");
using(var cancelled=new CancellationTokenSource(20))
{
 var abandoned=sharedProbe.Get("another",cancelled.Token);var surviving=sharedProbe.Get("another",CancellationToken.None);
 try{await abandoned;throw new Exception("cancellation expected");}catch(OperationCanceledException){}
 Check((await surviving).Count==2&&calls==2,"one cancelled caller does not break shared probe");
}
var failingCalls=0;
var stalled=new LiveStreamProbe(async (url,token)=>{Interlocked.Increment(ref failingCalls);await System.Threading.Tasks.Task.Delay(10000,token);return probeJson;},TimeSpan.FromMilliseconds(100));
var watch=System.Diagnostics.Stopwatch.StartNew();
for(var i=0;i<2;i++)try{await stalled.Get("stalled",CancellationToken.None);throw new Exception("failure expected");}catch(InvalidOperationException){}
Check(watch.Elapsed.TotalSeconds<2&&failingCalls==1,"stalled source bounded and failed retries coalesced");
try{LiveStreamProbe.Parse("{\"streams\":[]}");throw new Exception("invalid video expected");}catch(InvalidOperationException){}
Check(true,"empty source rejected before playback");
var liveVideo=LiveStreamProbe.ParseLiveMetadata(probes[0][0]);
Check(liveVideo.Index==-1&&liveVideo.IsInterlaced&&liveVideo.AverageFrameRate==25&&probes[0][0].Index==0,"live automatic mapping preserves metadata without mutating cached probe");
await AdaptiveProbeTests.Run(Check);
await RelayStartupTests.Run(Check);
var relayHandler=new RelayHandler();
using(var relay=new LiveStreamRelay(new System.Net.Http.HttpClient(relayHandler),8096,TimeSpan.FromMilliseconds(100)))
{
 var address=relay.Register("http://receiver/channel");var id=address.Split('/').Last();
 Check(relay.Register("http://receiver/channel")==address,"one stable relay address for a channel");
 var first=await relay.Subscribe(id,CancellationToken.None);var second=await relay.Subscribe(id,CancellationToken.None);
 var one=await first.Reader.ReadAsync();var two=await second.Reader.ReadAsync();
 Check(relayHandler.Calls==1&&one[0]==0x47&&two[0]==0x47,"two data consumers share one receiver HTTP connection");
 await first.DisposeAsync();Check((await second.Reader.ReadAsync()).Length>0&&relayHandler.Calls==1,"one consumer stopping does not interrupt the other");
 var context=new DefaultHttpContext();context.Connection.RemoteIpAddress=System.Net.IPAddress.Parse("192.0.2.5");
 var controller=new LiveRelayController(relay){ControllerContext=new Microsoft.AspNetCore.Mvc.ControllerContext{HttpContext=context}};
 await controller.Stream(id,CancellationToken.None);Check(context.Response.StatusCode==403,"relay denied to non-loopback clients");
 await second.DisposeAsync();await System.Threading.Tasks.Task.Delay(250);
 Check(System.Text.Json.JsonSerializer.Serialize(relay.Status()).Contains("\"ActiveSources\":0"),"receiver connection released after final consumer");
}
public class PathsProxy : DispatchProxy
{
 public string Folder;
 protected override object Invoke(MethodInfo method,object[] args)=>(method.Name=="get_DataPath" || method.Name=="get_PluginConfigurationsPath")?Folder:null;
}

public class PolicyUserProxy : DispatchProxy
{
 public User Current;
 protected override object Invoke(MethodInfo method,object[] args) => method.Name=="GetUserById"&&Current!=null&&(Guid)args[0]==Current.Id?Current:null;
}
public class PolicyLibraryProxy : DispatchProxy
{
 public User Current;public BaseItem Item;public int Calls;
 protected override object Invoke(MethodInfo method,object[] args)
 {
  if(method.Name!="GetItemById"||args.Length!=2||!ReferenceEquals(args[1],Current))throw new Exception("Expected native item lookup using authenticated User");
  Calls++;return Item;
 }
}

public class RelayHandler : System.Net.Http.HttpMessageHandler
{
 public int Calls;
 protected override System.Threading.Tasks.Task<System.Net.Http.HttpResponseMessage> SendAsync(System.Net.Http.HttpRequestMessage request,CancellationToken token)
 { Interlocked.Increment(ref Calls);return System.Threading.Tasks.Task.FromResult(new System.Net.Http.HttpResponseMessage(System.Net.HttpStatusCode.OK){Content=new System.Net.Http.StreamContent(new PacketStream())}); }
}
public class PacketStream : Stream
{
 public override bool CanRead=>true;public override bool CanSeek=>false;public override bool CanWrite=>false;public override long Length=>throw new NotSupportedException();public override long Position{get=>0;set=>throw new NotSupportedException();}
 public override async System.Threading.Tasks.ValueTask<int> ReadAsync(Memory<byte> buffer,CancellationToken token=default)
 { await System.Threading.Tasks.Task.Delay(10,token);var size=Math.Min(buffer.Length,188*256);size-=size%188;buffer.Span[..size].Clear();for(int i=0;i<size;i+=188)buffer.Span[i]=0x47;return size; }
 public override int Read(byte[] b,int o,int c)=>throw new NotSupportedException();public override void Flush(){}public override long Seek(long o,SeekOrigin s)=>throw new NotSupportedException();public override void SetLength(long n)=>throw new NotSupportedException();public override void Write(byte[] b,int o,int c)=>throw new NotSupportedException();
}