[CHANGE] Added jint. Reworking decipher functionality

Manager.App/Components/Application/Dev/CipherDev.razor

@@ -0,0 +1,13 @@
+@using Manager.App.Models.System
+@using Manager.App.Services.System
+
+@inject ISnackbar Snackbar
+@inject ClientService ClientService
+
+<MudText>Cipher manager</MudText>
+<MudStack Row Spacing="2">
+    <MudAutocomplete T="YouTubeClientItem" Label="Client" @bind-Value="@_selectedClient" SearchFunc="SearchClientsAsync" ToStringFunc="@(i => i == null ? "null?" : $"{i.Name} ({i.Handle})")"
+                     Variant="Variant.Outlined" ShowProgressIndicator ProgressIndicatorColor="Color.Primary">
+    </MudAutocomplete>
+    <MudButton OnClick="ExecCipher">Exec</MudButton>
+</MudStack>

Manager.App/Components/Application/Dev/CipherDev.razor.cs

@@ -0,0 +1,43 @@
+using Manager.App.Models.System;
+using Manager.YouTube.Util.Cipher;
+using Microsoft.AspNetCore.Components;
+using Microsoft.AspNetCore.Components.Web;
+using MudBlazor;
+
+namespace Manager.App.Components.Application.Dev;
+
+public partial class CipherDev : ComponentBase
+{
+    private YouTubeClientItem? _selectedClient;
+    
+    private async Task ExecCipher(MouseEventArgs obj)
+    {
+        if (_selectedClient == null)
+        {
+            Snackbar.Add("No client selected", Severity.Warning);
+            return;
+        }
+
+        var ytClientResult = await ClientService.LoadClientByIdAsync(_selectedClient.Id);
+        if (!ytClientResult.IsSuccess)
+        {
+            Snackbar.Add(ytClientResult.Error?.Description ?? "Failed to get the client!", Severity.Error);
+            return;
+        }
+
+        var ytClient = ytClientResult.Value;
+        if (ytClient.State == null)
+        {
+            Snackbar.Add("Client state is null!", Severity.Warning);
+            return;
+        }
+
+        var decoder = await CipherManager.GetDecoderAsync(ytClient.State, ytClient);
+    }
+    
+    private async Task<IEnumerable<YouTubeClientItem>> SearchClientsAsync(string? search, CancellationToken cancellationToken)
+    {
+        var searchResults = await ClientService.GetClientsAsync(search, cancellationToken: cancellationToken);
+        return !searchResults.IsSuccess ? [] : searchResults.Value;
+    }
+}

Manager.App/Components/Application/Dev/DevelopmentVideo.razor

@@ -5,7 +5,7 @@
 @inject ClientService ClientService
 
 <MudText>Video data</MudText>
-<MudStack Spacing="2">
+<MudStack Row Spacing="2">
     <MudAutocomplete T="YouTubeClientItem" Label="Client" @bind-Value="@_selectedClient" SearchFunc="SearchClientsAsync" ToStringFunc="@(i => i == null ? "null?" : $"{i.Name} ({i.Handle})")"
                      Variant="Variant.Outlined" ShowProgressIndicator ProgressIndicatorColor="Color.Primary">
     </MudAutocomplete>

Manager.App/Components/Pages/Development.razor

@@ -9,4 +9,7 @@
     <MudTabPanel Text="Video">
         <DevelopmentVideo />
     </MudTabPanel>
+    <MudTabPanel Text="Cipher">
+        <CipherDev />
+    </MudTabPanel>
 </MudTabs>

Manager.App/Services/LibraryService.cs

@@ -144,7 +144,7 @@ public class LibraryService : ILibraryService
         try
         {
             await using var context = await _dbContextFactory.CreateDbContextAsync(cancellationToken);
-            var channel = await context.Channels
+            var channel = await context.Channels.AsSplitQuery()
                 .Include(c => c.ClientAccount)
                     .ThenInclude(p => p!.HttpCookies)
                 .Include(f => f.Files)

Manager.YouTube/Interpreter/JavaScriptEngineManager.cs

@@ -0,0 +1,58 @@
+using System.Text;
+using DotBased.Monads;
+
+namespace Manager.YouTube.Interpreter;
+
+public class JavaScriptEngineManager
+{
+    private readonly PlayerEngineCollection _engines = [];
+    
+    public async Task<Result<PlayerEngine>> GetPlayerEngine(string playerUrl)
+    {
+        if (string.IsNullOrEmpty(playerUrl))
+        {
+            return ResultError.Fail("player url is empty or null!");
+        }
+
+        var version = GetScriptVersion(playerUrl);
+        
+        if (_engines.TryGetValue(version, out var engine))
+        {
+            return engine;
+        }
+
+        var playerJsSourceResult = await DownloadPlayerScriptAsync(playerUrl);
+        if (!playerJsSourceResult.IsSuccess)
+        {
+            return playerJsSourceResult.Error ?? ResultError.Fail("Download player script failed!");
+        }
+
+        return new PlayerEngine(version, playerJsSourceResult.Value);
+    }
+    
+    private static string GetScriptVersion(string relativePlayerUrl)
+    {
+        var split = relativePlayerUrl.Split('/', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
+        var v = split[2];
+        var lang = split[4];
+        return $"{v}-{lang}";
+    }
+
+    private static async Task<Result<string>> DownloadPlayerScriptAsync(string relativeUrl, YouTubeClient? client = null)
+    {
+        var downloadRequest = new HttpRequestMessage(HttpMethod.Get, new Uri($"{NetworkService.Origin}/{relativeUrl}"));
+        var downloadResponse = await NetworkService.DownloadBytesAsync(downloadRequest, client);
+        if (!downloadResponse.IsSuccess)
+        {
+            return downloadResponse.Error ?? ResultError.Fail($"Failed to download script from url: {relativeUrl}");
+        }
+
+        var playerJs = Encoding.UTF8.GetString(downloadResponse.Value.Data);
+        if (string.IsNullOrWhiteSpace(playerJs))
+        {
+            return ResultError.Fail("Script value is empty!");
+        }
+        
+        return playerJs;
+    }
+}

Manager.YouTube/Interpreter/PlayerEngine.cs

@@ -0,0 +1,42 @@
+using DotBased.Logging;
+using Jint;
+
+namespace Manager.YouTube.Interpreter;
+
+public class PlayerEngine
+{
+    public string Version { get; set; }
+    public Engine JsEngine { get; set; }
+    private ILogger Logger { get; set; }
+
+    public PlayerEngine(string version, string script)
+    {
+        if (string.IsNullOrEmpty(version))
+        {
+            throw new ArgumentNullException(nameof(version));
+        }
+
+        if (string.IsNullOrEmpty(script))
+        {
+            throw new ArgumentNullException(nameof(script));
+        }
+
+        Logger = LogService.RegisterLogger(typeof(PlayerEngine), version);
+        Version = version;
+        JsEngine = new Engine().Execute(script).SetValue("log", new Action<object>(obj =>
+        {
+            var logStr = obj.ToString();
+            if (string.IsNullOrEmpty(logStr))
+            {
+                return;
+            }
+            Logger.Information(logStr);
+        }));
+        
+    }
+
+    public void InitializePlayer()
+    {
+        JsEngine.Execute("createPlayer");
+    }
+}

Manager.YouTube/Interpreter/PlayerEngineCollection.cs

@@ -0,0 +1,11 @@
+using System.Collections.ObjectModel;
+
+namespace Manager.YouTube.Interpreter;
+
+public class PlayerEngineCollection : KeyedCollection<string, PlayerEngine>
+{
+    protected override string GetKeyForItem(PlayerEngine item)
+    {
+        return item.Version;
+    }
+}

Manager.YouTube/Manager.YouTube.csproj

@@ -9,6 +9,7 @@
     <ItemGroup>
       <PackageReference Include="DotBased" Version="1.0.0" />
       <PackageReference Include="HtmlAgilityPack" Version="1.12.2" />
+      <PackageReference Include="Jint" Version="4.4.1" />
     </ItemGroup>
 
 </Project>

Manager.YouTube/Models/Innertube/StreamingData.cs

@@ -1,4 +1,5 @@
 using System.Text.Json.Serialization;
+using Manager.YouTube.Util.Converters;
 
 namespace Manager.YouTube.Models.Innertube;
 
@@ -8,6 +9,7 @@ public class StreamingData
     [JsonPropertyName("expiresInSeconds")]
     public int ExpiresInSeconds { get; set; }
     [JsonPropertyName("serverAbrStreamingUrl")]
+    [JsonConverter(typeof(JsonUrlEscapeConverter))]
     public string ServerAbrStreamingUrl { get; set; } = "";
     [JsonPropertyName("formats")]
     public List<StreamingFormat> Formats { get; set; } = [];

Manager.YouTube/Util/Cipher/CipherDecoder.cs

@@ -112,7 +112,7 @@ public partial class CipherDecoder
     }
 
     
-    [GeneratedRegex(@"(\w+)=function\(\w+\){(\w+)=\2\.split\(\x22{2}\);.*?return\s+\2\.join\(\x22{2}\)}")]
+    [GeneratedRegex(@"([A-Za-z_$][A-Za-z0-9_$]*)=function\([A-Za-z_$][A-Za-z0-9_$]*\)\{\s*([A-Za-z_$][A-Za-z0-9_$]*)=\2\.split\(\x22\x22\);[\s\S]*?return\s+\2\.join\(\x22\x22\)\s*\}")]
     private static partial Regex FunctionBodyRegex();
     [GeneratedRegex("([\\$_\\w]+).\\w+\\(\\w+,\\d+\\);")]
     private static partial Regex DefinitionBodyRegex();

Manager.YouTube/Util/Converters/JsonUrlEscapeConverter.cs

@@ -0,0 +1,27 @@
+using System.Text.Json;
+using System.Text.Json.Serialization;
+using System.Text.RegularExpressions;
+
+namespace Manager.YouTube.Util.Converters;
+
+public partial class JsonUrlEscapeConverter : JsonConverter<string>
+{
+    public override string? Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+    {
+        var url = reader.GetString();
+        if (string.IsNullOrWhiteSpace(url))
+        {
+            return url;
+        }
+
+        return UrlPatternRegex().IsMatch(url) ? Uri.UnescapeDataString(url) : url;
+    }
+
+    public override void Write(Utf8JsonWriter writer, string value, JsonSerializerOptions options)
+    {
+        writer.WriteStringValue(value);
+    }
+
+    [GeneratedRegex("^(https?|ftp)://", RegexOptions.IgnoreCase | RegexOptions.Compiled, "nl-NL")]
+    private static partial Regex UrlPatternRegex();
+}