[CHANGE] Adding playlist 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

@@ -0,0 +1,17 @@
+@using Manager.App.Models.System
+@using Manager.App.Services.System
+
+@inject ISnackbar Snackbar
+@inject ClientService ClientService
+@inject NavigationManager NavigationManager
+
+<MudText>Video data</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>
+    <MudTextField Label="Video id" @bind-Value="@_videoId"/>
+</MudStack>
+<MudStack>
+    <MudButton OnClick="NavigateToVideo">Get data</MudButton>
+</MudStack>

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

@@ -0,0 +1,40 @@
+using Manager.App.Models.System;
+using Microsoft.AspNetCore.Components;
+using Microsoft.AspNetCore.Components.Web;
+using MudBlazor;
+
+namespace Manager.App.Components.Application.Dev;
+
+public partial class DevelopmentVideo : ComponentBase
+{
+    private YouTubeClientItem? _selectedClient;
+    private string _videoId = "";
+    
+    private async Task<IEnumerable<YouTubeClientItem>> SearchClientsAsync(string? search, CancellationToken cancellationToken)
+    {
+        var searchResults = await ClientService.GetClientsAsync(search, cancellationToken: cancellationToken);
+        return !searchResults.IsSuccess ? [] : searchResults.Value;
+    }
+    
+    private void NavigateToVideo(MouseEventArgs obj)
+    {
+        if (_selectedClient == null)
+        {
+            Snackbar.Add("No client selected!", Severity.Warning);
+            return;
+        }
+
+        if (string.IsNullOrWhiteSpace(_videoId))
+        {
+            Snackbar.Add("No video ID set!", Severity.Warning);
+            return;
+        }
+
+        if (_videoId.Length != 11)
+        {
+            Snackbar.Add("Video ID needs to have an length of 11 chars!", Severity.Warning);
+        }
+
+        NavigationManager.NavigateTo($"/video/{_videoId}?clientId={_selectedClient.Id}");
+    }
+}

Manager.App/Components/Dialogs/AccountDialog.razor

@@ -27,44 +27,66 @@
 
                     <MudStack Row Spacing="2" Style="height: 100%">
                         <MudPaper Elevation="0" Outlined Class="pa-2" Style="width: 50%;">
-                            <MudText>Import cookies</MudText>
+                            <MudText>Import cookies (Netscape Cookie format)</MudText>
-                            <MudText Typo="Typo.caption">@($"{ImportCookies.Count} cookie(s) imported")</MudText>
+                            <MudStack Spacing="2">
-                            <MudForm @bind-IsValid="@_cookieImportTextValid">
+                                <MudStack Row Spacing="2">
-                                <MudTextField @bind-Value="@_cookieDomain" Immediate Required Label="Domain"
+                                    <MudFileUpload T="IBrowserFile" Accept=".txt" FilesChanged="UploadFiles">
-                                              RequiredError="Domain is required."/>
+                                        <ActivatorContent>
+                                            <MudButton Variant="Variant.Filled"
+                                                       Color="Color.Primary"
+                                                       StartIcon="@Icons.Material.Filled.CloudUpload">
+                                                Upload cookie txt
+                                            </MudButton>
+                                        </ActivatorContent>
+                                    </MudFileUpload>
+                                    <MudButton Variant="Variant.Outlined"
+                                               OnClick="ParseCookies" Disabled="@(string.IsNullOrWhiteSpace(_cookieText))">Import
+                                    </MudButton>
+                                </MudStack>
+                                @if (MissingCookies.Any())
+                                {
+                                    <MudPaper Class="pa-2" Elevation="0" Outlined>
+                                        <MudAlert Severity="Severity.Warning" Square Class="mb-2 mt-3">Some required cookies are not found, add the following cookie(s) to continue.</MudAlert>
+                                        <MudChipSet T="string" ReadOnly>
+                                            @foreach (var missingCookieName in MissingCookies)
+                                            {
+                                                <MudChip Variant="Variant.Text" Color="Color.Info">@missingCookieName</MudChip>
+                                            }
+                                        </MudChipSet>
+                                    </MudPaper>
+                                }
                                 <MudTextField Class="my-2" Lines="4" AutoGrow @bind-Value="@_cookieText" Immediate
-                                              Required Label="Cookies" Variant="Variant.Outlined"
+                                              Required Label="Cookies" Variant="Variant.Outlined"/>
-                                              Placeholder="EXAMPLE: Cookie1=Value1; Cookie2=Value2;"
+                            </MudStack>
-                                              Validation="@(new Func<string, string?>(ValidateCookieText))"/>
-                                <MudButton Variant="Variant.Outlined" Disabled="@(!_cookieImportTextValid)"
-                                           OnClick="ParseCookies">Import
-                                </MudButton>
-                            </MudForm>
                         </MudPaper>
 
                         <MudDataGrid Items="ImportCookies" Dense Elevation="0" Outlined Style="width: 50%;">
-                            <Header>
+                            <ToolBarContent>
-                                <MudStack Class="ma-2">
+                                <MudText>Cookies</MudText>
-                                    <MudText>Cookies</MudText>
+                                <MudSpacer />
-                                </MudStack>
+                                <MudText Typo="Typo.caption">@($"{ImportCookies.Count} cookie(s)")</MudText>
-                            </Header>
+                            </ToolBarContent>
                             <Columns>
                                 <TemplateColumn Title="Name">
                                     <CellTemplate>
-                                        <MudTextField Variant="Variant.Text" @bind-Value="@context.Item.Name"
+                                        <MudText>@context.Item.Name</MudText>
-                                                      Immediate/>
                                     </CellTemplate>
                                 </TemplateColumn>
                                 <TemplateColumn Title="Domain">
                                     <CellTemplate>
-                                        <MudTextField Variant="Variant.Text" @bind-Value="@context.Item.Domain"
+                                        <MudText>@context.Item.Domain</MudText>
-                                                      Immediate/>
+                                    </CellTemplate>
+                                </TemplateColumn>
+                                <TemplateColumn Title="Expires">
+                                    <CellTemplate>
+                                        <MudText>@context.Item.Expires</MudText>
                                     </CellTemplate>
                                 </TemplateColumn>
                                 <TemplateColumn Title="Value">
                                     <CellTemplate>
-                                        <MudTextField Variant="Variant.Text" @bind-Value="@context.Item.Value"
+                                        <MudTooltip Text="@context.Item.Value">
-                                                      Immediate/>
+                                            <MudText Style="white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 250px;">@context.Item.Value</MudText>
+                                        </MudTooltip>
                                     </CellTemplate>
                                 </TemplateColumn>
                             </Columns>

Manager.App/Components/Dialogs/AccountDialog.razor.cs

@@ -1,7 +1,12 @@
 using System.Net;
+using System.Net.Mime;
+using System.Text;
 using Manager.App.Models.Library;
 using Manager.YouTube;
+using Manager.YouTube.Constants;
+using Manager.YouTube.Parsers;
 using Microsoft.AspNetCore.Components;
+using Microsoft.AspNetCore.Components.Forms;
 using MudBlazor;
 
 namespace Manager.App.Components.Dialogs
@@ -12,12 +17,11 @@ namespace Manager.App.Components.Dialogs
         [Parameter] public string DefaultUserAgent { get; set; } = "";
         private ClientChannel? ClientChannel { get; set; }
         private CookieCollection ImportCookies { get; set; } = [];
+        private IEnumerable<string> MissingCookies => CookieConstants.RequiredCookiesNames.Where(req => !ImportCookies.Select(c => c.Name).ToHashSet().Contains(req)).ToList();
         private bool _isLoading;
         private AccountImportSteps _steps = AccountImportSteps.Authenticate;
 
-        private bool _cookieImportTextValid;
         private string _cookieText = "";
-        private string _cookieDomain = ".youtube.com";
         
         private bool CanSave()
         {
@@ -70,13 +74,40 @@ namespace Manager.App.Components.Dialogs
             }
             await InvokeAsync(StateHasChanged);
         }
-
+        
-        private void ParseCookies()
+        private async Task UploadFiles(IBrowserFile? file)
         {
+            if (file == null)
+            {
+                SnackbarService.Add("File is null!", Severity.Error);
+                return;
+            }
+
+            if (file.ContentType != MediaTypeNames.Text.Plain)
+            {
+                SnackbarService.Add($"File uploaded with unsupported content type: {file.ContentType}", Severity.Warning);
+                return;
+            }
+            
+            _isLoading = true;
+            var streamReader = new StreamReader(file.OpenReadStream(), Encoding.UTF8);
+            _cookieText = await streamReader.ReadToEndAsync();
+            _isLoading = false;
+            await InvokeAsync(StateHasChanged);
+        }
+
+        private async Task ParseCookies()
+        {
+            if (string.IsNullOrEmpty(_cookieText))
+            {
+                return;
+            }
+
             try
             {
                 ImportCookies.Clear();
-                ImportCookies.Add(ParseCookieHeader(_cookieText, _cookieDomain));
+                var parsedCookies = await CookieTxtParser.ParseAsync(new MemoryStream(Encoding.UTF8.GetBytes(_cookieText)), CookieConstants.RequiredCookiesNames.ToHashSet());
+                ImportCookies.Add(parsedCookies);
                 _cookieText = string.Empty;
             }
             catch (Exception e)
@@ -94,50 +125,6 @@ namespace Manager.App.Components.Dialogs
             _steps = AccountImportSteps.Authenticate;
             StateHasChanged();
         }
-
-        private static string? ValidateCookieText(string text)
-        {
-            if (string.IsNullOrWhiteSpace(text))
-                return "Cookies are required";
-
-            var pairs = text.Split(';', StringSplitOptions.RemoveEmptyEntries);
-            foreach (var pair in pairs)
-            {
-                if (!pair.Contains('=')) return "Invalid.";
-                var key = pair[..pair.IndexOf('=')].Trim();
-                if (string.IsNullOrEmpty(key)) return "Invalid.";
-            }
-
-            return null;
-        }
-
-        public static CookieCollection ParseCookieHeader(string cookieHeader, string domain = "")
-        {
-            var collection = new CookieCollection();
-
-            if (string.IsNullOrWhiteSpace(cookieHeader))
-                return collection;
-
-            var cookies = cookieHeader.Split(';', StringSplitOptions.RemoveEmptyEntries);
-
-            foreach (var cookieStr in cookies)
-            {
-                var parts = cookieStr.Split('=', 2);
-                if (parts.Length != 2) continue;
-                
-                var name = parts[0].Trim();
-                var value = parts[1].Trim();
-
-                var cookie = new Cookie(name, value)
-                {
-                    Path = "/",
-                    Domain = domain
-                };
-                collection.Add(cookie);
-            }
-
-            return collection;
-        }
         
         private async Task BuildClient()
         {

Manager.App/Components/Layout/NavMenu.razor

@@ -2,9 +2,10 @@
 <MudNavMenu>
     <MudNavLink Href="/" Icon="@Icons.Material.Filled.Home" Match="NavLinkMatch.All">Home</MudNavLink>
     <MudNavGroup Title="Library" Expanded Icon="@Icons.Custom.Brands.YouTube" IconColor="Color.Error">
+        <MudNavLink Href="/Search" Icon="@Icons.Material.Filled.Search" Match="NavLinkMatch.All" Disabled>Search</MudNavLink>
         <MudNavLink Href="/Accounts" Icon="@Icons.Material.Filled.AccountBox" Match="NavLinkMatch.All">Accounts</MudNavLink>
         <MudNavLink Href="/Channels" Icon="@Icons.Material.Filled.AccountCircle" Match="NavLinkMatch.All">Channels</MudNavLink>
-        <MudNavLink Href="/Playlists" Icon="@Icons.Material.Filled.ViewList" Match="NavLinkMatch.All">Playlists</MudNavLink>
+        <MudNavLink Href="/Playlists" Icon="@Icons.Material.Filled.ViewList" Match="NavLinkMatch.All" Disabled>Playlists</MudNavLink>
         <MudNavLink Href="/Library" Icon="@Icons.Material.Filled.Info" Match="NavLinkMatch.All" IconColor="Color.Info">Info</MudNavLink>
     </MudNavGroup>
     <MudNavGroup Title="Application" Expanded Icon="@Icons.Material.Filled.SettingsSystemDaydream" IconColor="Color.Primary">

Manager.App/Components/Pages/Accounts.razor.cs

@@ -50,7 +50,6 @@ public partial class Accounts : ComponentBase
                 await _table.ReloadServerData();
             }
             Snackbar.Add($"Client {clientChannel.Channel?.Handle ?? clientChannel.YouTubeClient.Id} saved!", Severity.Success);
-            ClientService.AddClient(clientChannel.YouTubeClient);
         }
         else
         {

Manager.App/Components/Pages/Channels.razor

@@ -8,7 +8,7 @@
 <MudStack Spacing="2">
     <MudTable @ref="@_table" ServerData="ServerReload">
         <ToolBarContent>
-            <MudText Typo="Typo.h6">Channels stored in the library</MudText>
+            <MudText Typo="Typo.h6">Channels</MudText>
             <MudSpacer />
             <MudTextField T="string" ValueChanged="@(s=>OnSearch(s))" Placeholder="Search" Adornment="Adornment.Start" DebounceInterval="300"
                           AdornmentIcon="@Icons.Material.Filled.Search" IconSize="Size.Medium" Class="mt-0"></MudTextField>

Manager.App/Components/Pages/Development.razor

@@ -6,4 +6,10 @@
     <MudTabPanel Text="Authentication">
         <AuthenticationHasher />
     </MudTabPanel>
+    <MudTabPanel Text="Video">
+        <DevelopmentVideo />
+    </MudTabPanel>
+    <MudTabPanel Text="Cipher">
+        <CipherDev />
+    </MudTabPanel>
 </MudTabs>

Manager.App/Components/Pages/Library.razor

@@ -26,6 +26,18 @@
             <td>Library size:</td>
             <td>@($"{Suffix.BytesToSizeSuffix(_libraryInformation.TotalSizeBytes)} ({_libraryInformation.TotalSizeBytes} bytes)")</td>
         </tr>
+        <tr>
+            <td>Drive total size:</td>
+            <td>@($"{Suffix.BytesToSizeSuffix(_libraryInformation.DriveTotalSpaceBytes)} ({_libraryInformation.DriveTotalSpaceBytes} bytes)")</td>
+        </tr>
+        <tr>
+            <td>Drive used space:</td>
+            <td>@($"{Suffix.BytesToSizeSuffix(_libraryInformation.DriveUsedSpaceBytes)} ({_libraryInformation.DriveUsedSpaceBytes} bytes)")</td>
+        </tr>
+        <tr>
+            <td>Drive free space available:</td>
+            <td>@($"{Suffix.BytesToSizeSuffix(_libraryInformation.DriveFreeSpaceBytes)} ({_libraryInformation.DriveFreeSpaceBytes} bytes)")</td>
+        </tr>
         
         <tr>
             <td>Total media:</td>

Manager.App/Components/Pages/Services.razor

@@ -7,7 +7,7 @@
 
 <PageTitle>Services</PageTitle>
 
-<MudDataGrid T="ExtendedBackgroundService" Items="@_backgroundServices" Filterable QuickFilter="@QuickFilter">
+<MudDataGrid T="ExtendedBackgroundService" Items="@_backgroundServices" Filterable QuickFilter="@QuickFilter" Dense>
     <ToolBarContent>
         <MudText Typo="Typo.h6">Services</MudText>
         <MudSpacer/>
@@ -20,16 +20,19 @@
         <PropertyColumn Property="x => x.Description" Title="Description"/>
         <PropertyColumn Property="x => x.State" Title="Status"/>
         <PropertyColumn Property="x => x.ExecuteInterval" Title="Execute interval"/>
-        <TemplateColumn>
+        <TemplateColumn Title="Actions">
             <CellTemplate>
-                <MudStack Row Spacing="2">
+                <MudMenu Icon="@Icons.Material.Filled.MoreVert"
-                    <MudButton Disabled="@(context.Item?.State == ServiceState.Paused)"
+                         AriaLabel="Actions">
-                               OnClick="@(() => { context.Item?.Pause(); })" Variant="Variant.Outlined">Pause
+                    @foreach (var action in context.Item?.Actions ?? [])
-                    </MudButton>
+                    {
-                    <MudButton Disabled="@(context.Item?.State == ServiceState.Running)"
+                        <MudMenuItem OnClick="@action.Action" Disabled="@(!action.IsEnabled())">
-                               OnClick="@(() => { context.Item?.Resume(); })" Variant="Variant.Outlined">Resume
+                            <MudTooltip Text="@action.Description">
-                    </MudButton>
+                                <span>@action.Id</span>
-                </MudStack>
+                            </MudTooltip>
+                        </MudMenuItem>
+                    }
+                </MudMenu>
             </CellTemplate>
         </TemplateColumn>
     </Columns>

Manager.App/Components/Pages/Video.razor

@@ -0,0 +1,244 @@
+@page "/Video/{VideoId}"
+@using Manager.App.Services.System
+
+@inject ISnackbar Snackbar
+@inject ClientService ClientService
+@inject CacheService Cache
+
+<ForcedLoadingOverlay Visible="_loading"/>
+@if (!_loading && _video != null)
+{
+    <MudStack Spacing="2">
+        <MudCard>
+            @{
+                var thumbnailUrl = _video.Thumbnails.OrderByDescending(t => t.Width).FirstOrDefault()?.Url;
+            }
+            @if (!string.IsNullOrWhiteSpace(thumbnailUrl))
+            {
+                <MudCardMedia Image="@Cache.CreateCacheUrl(thumbnailUrl)" Height="500"/>
+            }
+            <MudCardContent>
+                <MudText Typo="Typo.h5">@_video.Title</MudText>
+                <MudText Typo="Typo.body2">@_video.Description</MudText>
+            </MudCardContent>
+        </MudCard>
+        <MudExpansionPanels MultiExpansion>
+            <MudExpansionPanel Text="Info" Expanded>
+                <MudStack Spacing="2" Row Wrap="Wrap.Wrap">
+                    @* Info *@
+                    <MudSimpleTable Bordered Dense Elevation="0" Outlined Square Hover>
+                        <tbody>
+                        <tr>
+                            <td>Video ID:</td>
+                            <td>@_video.VideoId</td>
+                        </tr>
+                        <tr>
+                            <td>Title:</td>
+                            <td>@_video.Title</td>
+                        </tr>
+                        <tr>
+                            <td>Description:</td>
+                            <td>@_video.Description</td>
+                        </tr>
+                        <tr>
+                            <td>HashTags:</td>
+                            <td>@foreach (var hashtag in _video.HashTags)
+                                {
+                                    <MudChip T="string" Variant="Variant.Text" Color="Color.Info">@hashtag</MudChip>
+                                }
+                            </td>
+                        </tr>
+                        <tr>
+                            <td>View count:</td>
+                            <td>@_video.ViewCount</td>
+                        </tr>
+                        <tr>
+                            <td>Like count:</td>
+                            <td>@_video.LikeCount</td>
+                        </tr>
+                        <tr>
+                            <td>Channel ID:</td>
+                            <td>@_video.ChannelId</td>
+                        </tr>
+                        <tr>
+                            <td>Author:</td>
+                            <td>@_video.Author</td>
+                        </tr>
+                        <tr>
+                            <td>Playability status:</td>
+                            <td>@_video.PlayabilityStatus</td>
+                        </tr>
+                        <tr>
+                            <td>Length seconds:</td>
+                            <td>@_video.LengthSeconds</td>
+                        </tr>
+                        <tr>
+                            <td>Keywords:</td>
+                            <td>@foreach (var keyword in _video.Keywords)
+                                {
+                                    <MudChip T="string" Variant="Variant.Text">@keyword</MudChip>
+                                }
+                            </td>
+                        </tr>
+                        <tr>
+                            <td>Publish date:</td>
+                            <td>@_video.PublishDate</td>
+                        </tr>
+                        <tr>
+                            <td>Upload date:</td>
+                            <td>@_video.UploadDate</td>
+                        </tr>
+                        <tr>
+                            <td>Category:</td>
+                            <td>@_video.Category</td>
+                        </tr>
+                        </tbody>
+                    </MudSimpleTable>
+                    @* Boolean values *@
+                    <MudSimpleTable Bordered Dense Elevation="0" Outlined Square Hover>
+                        <tbody>
+                        <tr>
+                            <td>Is owner viewing:</td>
+                            <td>@_video.IsOwnerViewing</td>
+                        </tr>
+                        <tr>
+                            <td>Allow rating:</td>
+                            <td>@_video.AllowRating</td>
+                        </tr>
+                        <tr>
+                            <td>Is crawlable:</td>
+                            <td>@_video.IsCrawlable</td>
+                        </tr>
+                        <tr>
+                            <td>Is private:</td>
+                            <td>@_video.IsPrivate</td>
+                        </tr>
+                        <tr>
+                            <td>Is unplugged corpus:</td>
+                            <td>@_video.IsUnpluggedCorpus</td>
+                        </tr>
+                        <tr>
+                            <td>Is live:</td>
+                            <td>@_video.IsLive</td>
+                        </tr>
+                        <tr>
+                            <td>Is family save:</td>
+                            <td>@_video.IsFamilySave</td>
+                        </tr>
+                        <tr>
+                            <td>Is unlisted:</td>
+                            <td>@_video.IsUnlisted</td>
+                        </tr>
+                        <tr>
+                            <td>Has Ypc metadata:</td>
+                            <td>@_video.HasYpcMetadata</td>
+                        </tr>
+                        <tr>
+                            <td>Is shorts eligible:</td>
+                            <td>@_video.IsShortsEligible</td>
+                        </tr>
+                        </tbody>
+                    </MudSimpleTable>
+                </MudStack>
+            </MudExpansionPanel>
+            <MudExpansionPanel Text="Streaming data">
+                @if (_video.StreamingData == null)
+                {
+                    <MudAlert Severity="Severity.Info">No streaming data available!</MudAlert>
+                }
+                else
+                {
+                    <MudStack Spacing="2" Row Wrap="Wrap.Wrap">
+                        <MudStack>
+                            <MudText Typo="Typo.h5">Adaptive Formats</MudText>
+                            <MudTable Items="@_video.StreamingData.AdaptiveFormats">
+                                <HeaderContent>
+                                    <MudTh>Id</MudTh>
+                                    <MudTh>Mime type</MudTh>
+                                    <MudTh>Bitrate</MudTh>
+                                    <MudTh>Resolution</MudTh>
+                                    <MudTh>Last modified (UNIX epoch)</MudTh>
+                                    <MudTh>Quality</MudTh>
+                                    <MudTh>FPS</MudTh>
+                                </HeaderContent>
+                                <RowTemplate>
+                                    <MudTd>@context.Itag</MudTd>
+                                    <MudTd>@context.MimeType</MudTd>
+                                    <MudTd>@context.Bitrate</MudTd>
+                                    <MudTd>@($"{context.Width}x{context.Height}")</MudTd>
+                                    <MudTd>@context.LastModified</MudTd>
+                                    <MudTd>@context.Quality</MudTd>
+                                    <MudTd>@context.Fps</MudTd>
+                                </RowTemplate>
+                            </MudTable>
+                        </MudStack>
+                        <MudStack>
+                            <MudText Typo="Typo.h5">Formats</MudText>
+                            <MudTable Items="@_video.StreamingData.Formats">
+                                <HeaderContent>
+                                    <MudTh>Id</MudTh>
+                                    <MudTh>Mime type</MudTh>
+                                    <MudTh>Bitrate</MudTh>
+                                    <MudTh>Resolution</MudTh>
+                                    <MudTh>Last modified (UNIX epoch)</MudTh>
+                                    <MudTh>Quality</MudTh>
+                                    <MudTh>FPS</MudTh>
+                                </HeaderContent>
+                                <RowTemplate>
+                                    <MudTd>@context.Itag</MudTd>
+                                    <MudTd>@context.MimeType</MudTd>
+                                    <MudTd>@context.Bitrate</MudTd>
+                                    <MudTd>@($"{context.Width}x{context.Height}")</MudTd>
+                                    <MudTd>@context.LastModified</MudTd>
+                                    <MudTd>@context.Quality</MudTd>
+                                    <MudTd>@context.Fps</MudTd>
+                                </RowTemplate>
+                            </MudTable>
+                        </MudStack>
+                    </MudStack>
+                }
+            </MudExpansionPanel>
+            <MudExpansionPanel Text="Player config">
+                @if (_video.PlayerConfig == null)
+                {
+                    <MudAlert Severity="Severity.Info">No player config available!</MudAlert>
+                }
+                else
+                {
+                    <MudSimpleTable Bordered Dense Elevation="0" Outlined Square Hover>
+                        <tbody>
+                        <tr>
+                            <td>Audio loudness DB:</td>
+                            <td>@_video.PlayerConfig.AudioLoudnessDb</td>
+                        </tr>
+                        <tr>
+                            <td>Audio perceptual loudness DB:</td>
+                            <td>@_video.PlayerConfig.AudioPerceptualLoudnessDb</td>
+                        </tr>
+                        <tr>
+                            <td>Audio enable per format loudness:</td>
+                            <td>@_video.PlayerConfig.AudioLoudnessDb</td>
+                        </tr>
+                        <tr>
+                            <td>Max bitrate:</td>
+                            <td>@_video.PlayerConfig.MaxBitrate</td>
+                        </tr>
+                        <tr>
+                            <td>Max read ahead time MS:</td>
+                            <td>@_video.PlayerConfig.MaxReadAheadMediaTimeMs</td>
+                        </tr>
+                        <tr>
+                            <td>Min read ahead time MS:</td>
+                            <td>@_video.PlayerConfig.MinReadAheadMediaTimeMs</td>
+                        </tr>
+                        <tr>
+                            <td>Read ahead growth rate MS:</td>
+                            <td>@_video.PlayerConfig.ReadAheadGrowthRateMs</td>
+                        </tr>
+                        </tbody>
+                    </MudSimpleTable>
+                }
+            </MudExpansionPanel>
+        </MudExpansionPanels>
+    </MudStack>
+}

Manager.App/Components/Pages/Video.razor.cs

@@ -0,0 +1,48 @@
+using Manager.YouTube.Models;
+using Microsoft.AspNetCore.Components;
+using MudBlazor;
+
+namespace Manager.App.Components.Pages;
+
+public partial class Video : ComponentBase
+{
+    [Parameter]
+    public required string VideoId { get; set; }
+
+    [SupplyParameterFromQuery(Name = "clientId")]
+    public string ClientId { get; set; } = "";
+
+    private bool _loading = true;
+    private YouTubeVideo? _video;
+
+    protected override async Task OnInitializedAsync()
+    {
+        if (string.IsNullOrEmpty(VideoId))
+        {
+            Snackbar.Add("Video id is null or empty!", Severity.Error);
+            _loading = false;
+            return;
+        }
+
+        var clientResult = await ClientService.LoadClientByIdAsync(ClientId);
+        if (!clientResult.IsSuccess)
+        {
+            Snackbar.Add(clientResult.Error?.Description ?? "Failed to load client!", Severity.Error);
+            _loading = false;
+            return;
+        }
+
+        var client = clientResult.Value;
+        
+        var videoResult = await client.GetVideoByIdAsync(VideoId);
+        if (!videoResult.IsSuccess)
+        {
+            Snackbar.Add(videoResult.Error?.Description ?? "Failed to get video.", Severity.Error);
+            _loading = false;
+            return;
+        }
+
+        _video = videoResult.Value;
+        _loading = false;
+    }
+}

Manager.App/Models/Library/LibraryInformation.cs

@@ -8,4 +8,7 @@ public record LibraryInformation
     public long TotalMedia { get; set; }
     public long TotalChannels { get; set; }
     public long TotalSizeBytes { get; set; }
+    public long DriveTotalSpaceBytes { get; set; }
+    public long DriveFreeSpaceBytes { get; set; }
+    public long DriveUsedSpaceBytes { get; set; }
 }

Manager.App/Models/System/YouTubeClientItem.cs

@@ -0,0 +1,16 @@
+using Manager.App.Models.Library;
+
+namespace Manager.App.Models.System;
+
+public class YouTubeClientItem : AccountListView
+{
+    public YouTubeClientItem(AccountListView accountListView)
+    {
+        Id = accountListView.Id;
+        Name = accountListView.Name;
+        Handle = accountListView.Handle;
+        HasCookies = accountListView.HasCookies;
+        AvatarFileId = accountListView.AvatarFileId;
+    }
+    public bool IsLoaded { get; set; }
+}

Manager.App/Services/ExtendedBackgroundService.cs

@@ -7,52 +7,91 @@ public abstract class ExtendedBackgroundService(string name, string description,
     : BackgroundService
 {
     private TaskCompletionSource _resumeSignal = new(TaskCreationOptions.RunContinuationsAsynchronously);
+    private readonly List<ServiceAction> _actions = [];
+    private TaskCompletionSource? _manualContinue;
+    
     public ServiceState State { get; private set; } = ServiceState.Stopped;
     public CircularBuffer<ServiceEvent> ProgressEvents { get; } = new(500);
     public string Name { get; } = name;
-    public string Description { get; set; } = description;
+    public string Description { get; } = description;
-    public TimeSpan ExecuteInterval { get; set; } = executeInterval ?? TimeSpan.FromMinutes(1);
+    public TimeSpan ExecuteInterval { get; } = executeInterval ?? TimeSpan.FromSeconds(5);
+
+    public IReadOnlyList<ServiceAction> Actions => _actions;
+
+    protected void AddActions(IEnumerable<ServiceAction> actions)
+    {
+        _actions.AddRange(actions);
+    }
 
     protected sealed override async Task ExecuteAsync(CancellationToken stoppingToken)
     {
         State = ServiceState.Running;
         logger.LogInformation("Initializing background service: {ServiceName}", Name);
+        
+        _actions.AddRange(
+        [
+            new ServiceAction("Start", "Start the service (after the service is stopped of faulted.)", Start, () => State is ServiceState.Stopped or ServiceState.Faulted),
+            new ServiceAction("Pause", "Pause the service", Pause, () => State != ServiceState.Paused),
+            new ServiceAction("Resume", "Resume the service", Resume, () => State != ServiceState.Running)
+        ]);
+        
         await InitializeAsync(stoppingToken);
         
-        try
+        while (!stoppingToken.IsCancellationRequested)
         {
-            logger.LogInformation("Running background service: {ServiceName}", Name);
+            if (State == ServiceState.Running)
-            while (!stoppingToken.IsCancellationRequested)
             {
-                if (State == ServiceState.Paused)
+                try
                 {
-                    _resumeSignal = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously);
+                    logger.LogInformation("Started running background service: {ServiceName}", Name);
-                    await _resumeSignal.Task.WaitAsync(stoppingToken);
+                    while (!stoppingToken.IsCancellationRequested)
-                }
+                    {
+                        if (State == ServiceState.Paused)
+                        {
+                            _resumeSignal = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously);
+                            await _resumeSignal.Task.WaitAsync(stoppingToken);
+                        }
 
-                await ExecuteServiceAsync(stoppingToken);
+                        await ExecuteServiceAsync(stoppingToken);
-                
+
-                await Task.Delay(ExecuteInterval, stoppingToken);
+                        await Task.Delay(ExecuteInterval, stoppingToken);
+                    }
+                }
+                catch (OperationCanceledException e)
+                {
+                    logger.LogInformation(e, "Service {ServiceName} received cancellation", Name);
+                }
+                catch (Exception e)
+                {
+                    State = ServiceState.Faulted;
+                    logger.LogError(e, "Background service {ServiceName} faulted!", Name);
+                    LogEvent("Error executing background service.", LogSeverity.Error);
+                }
+                finally
+                {
+                    State = ServiceState.Stopped;
+                }
             }
-        }
+            
-        catch (Exception e)
+            _manualContinue = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously);
-        {
+            var delayTask = Task.Delay(TimeSpan.FromMinutes(5), stoppingToken);
-            if (e is not OperationCanceledException)
+            await Task.WhenAny(delayTask, _manualContinue.Task);
-            {
+            _manualContinue = null;
-                State = ServiceState.Faulted;
-                logger.LogError(e,"Background service {ServiceName} faulted!", Name);
-                throw;
-            }
-            logger.LogInformation(e,"Service {ServiceName} received cancellation", Name);
-        }
-        finally
-        {
-            State = ServiceState.Stopped;
         }
     }
 
     protected void LogEvent(string message, LogSeverity severity = LogSeverity.Info) => ProgressEvents.Add(new ServiceEvent(string.Intern(Name), message, DateTime.UtcNow, severity));
 
+    public void Start()
+    {
+        if (State is ServiceState.Stopped or ServiceState.Faulted)
+        {
+            State = ServiceState.Running;
+            _manualContinue?.TrySetResult();
+            LogEvent("Started service.");
+        }
+    }
+
     public void Pause()
     {
         if (State == ServiceState.Running)
@@ -94,4 +133,6 @@ public enum ServiceState
     Paused
 }
 
-public record struct ServiceEvent(string Source, string Message, DateTime DateUtc, LogSeverity Severity);
+public record struct ServiceEvent(string Source, string Message, DateTime DateUtc, LogSeverity Severity);
+
+public record ServiceAction(string Id, string Description, Action Action, Func<bool> IsEnabled);

Manager.App/Services/ILibraryService.cs

@@ -8,7 +8,6 @@ namespace Manager.App.Services;
 
 public interface ILibraryService
 {
-    public Task<Result> FetchChannelImagesAsync(InnertubeChannel innertubeChannel);
     public Task<Result> SaveClientAsync(ClientAccountEntity client, CancellationToken cancellationToken = default);
     public Task<Result<LibraryFile>> GetFileByIdAsync(Guid id, CancellationToken cancellationToken = default);
     public Task<Result<ChannelEntity>> GetChannelByIdAsync(string id, CancellationToken cancellationToken = default);

Manager.App/Services/LibraryService.cs

@@ -16,7 +16,6 @@ namespace Manager.App.Services;
 public class LibraryService : ILibraryService
 {
     private readonly ILogger<LibraryService> _logger;
-    private readonly LibrarySettings _librarySettings;
     private readonly IDbContextFactory<LibraryDbContext> _dbContextFactory;
     private readonly DirectoryInfo _libraryDirectory;
     private readonly CacheService _cacheService;
@@ -24,38 +23,13 @@ public class LibraryService : ILibraryService
     public LibraryService(ILogger<LibraryService> logger, IOptions<LibrarySettings> librarySettings, IDbContextFactory<LibraryDbContext> contextFactory, CacheService cacheService)
     {
         _logger = logger;
-        _librarySettings = librarySettings.Value;
+        var librarySettings1 = librarySettings.Value;
         _dbContextFactory = contextFactory;
         _cacheService = cacheService;
-        _libraryDirectory = Directory.CreateDirectory(_librarySettings.Path);
+        _libraryDirectory = Directory.CreateDirectory(librarySettings1.Path);
         logger.LogDebug("Library directory: {LibraryWorkingDir}", _libraryDirectory.FullName);
-        Directory.CreateDirectory(Path.Combine(_librarySettings.Path, LibraryConstants.Directories.SubDirMedia));
+        Directory.CreateDirectory(Path.Combine(librarySettings1.Path, LibraryConstants.Directories.SubDirMedia));
-        Directory.CreateDirectory(Path.Combine(_librarySettings.Path, LibraryConstants.Directories.SubDirChannels));
+        Directory.CreateDirectory(Path.Combine(librarySettings1.Path, LibraryConstants.Directories.SubDirChannels));
-    }
-    
-    public async Task<Result> FetchChannelImagesAsync(InnertubeChannel innertubeChannel)
-    {
-        try
-        {
-            await using var context = await _dbContextFactory.CreateDbContextAsync();
-            
-            await AddWebImagesAsync(context, innertubeChannel.AvatarImages, innertubeChannel.Id, "avatars", LibraryConstants.FileTypes.ChannelAvatar, LibraryConstants.Directories.SubDirChannels);
-            await AddWebImagesAsync(context, innertubeChannel.BannerImages, innertubeChannel.Id, "banners", LibraryConstants.FileTypes.ChannelBanner, LibraryConstants.Directories.SubDirChannels);
-
-            if (!context.ChangeTracker.HasChanges())
-            {
-                _logger.LogInformation("No changes detected. Skipping.");
-                return Result.Success();
-            }
-
-            await context.SaveChangesAsync();
-        }
-        catch (Exception e)
-        {
-            return HandleException(e);
-        }
-        
-        return Result.Success();
     }
 
     private async Task AddWebImagesAsync(LibraryDbContext context, List<WebImage> images, string foreignKey, string libSubDir, string fileType, string subDir)
@@ -127,6 +101,7 @@ public class LibraryService : ILibraryService
             }
             else
             {
+                context.HttpCookies.RemoveRange(context.HttpCookies.Where(x => x.ClientId == client.Id));
                 context.ClientAccounts.Add(dbClient);
             }
 
@@ -169,9 +144,9 @@ 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)
+                    .ThenInclude(p => p!.HttpCookies)
                 .Include(f => f.Files)
                 .FirstOrDefaultAsync(c => c.Id == id, cancellationToken);
             
@@ -191,13 +166,7 @@ public class LibraryService : ILibraryService
     public async Task<Result> SaveChannelAsync(InnertubeChannel innertubeChannel, CancellationToken cancellationToken = default)
     {
         try
-        {
+        { 
-            var imagesResult = await FetchChannelImagesAsync(innertubeChannel);
-            if (!imagesResult.IsSuccess)
-            {
-                return ResultError.Fail("Failed to fetch channel images!");
-            }
-            
             await using var context = await _dbContextFactory.CreateDbContextAsync(cancellationToken);
             
             var channelResult = await GetChannelByIdAsync(innertubeChannel.Id, cancellationToken);
@@ -228,7 +197,7 @@ public class LibraryService : ILibraryService
                 return ResultError.Error(e);
             }
             
-            if (context.Channels.Any(c => c.Id == innertubeChannel.Id))
+            if (channelResult.IsSuccess)
             {
                 context.Channels.Update(channelEntity);
             }
@@ -237,6 +206,9 @@ public class LibraryService : ILibraryService
                 context.Channels.Add(channelEntity);
             }
             
+            await AddWebImagesAsync(context, innertubeChannel.AvatarImages, innertubeChannel.Id, "avatars", LibraryConstants.FileTypes.ChannelAvatar, LibraryConstants.Directories.SubDirChannels);
+            await AddWebImagesAsync(context, innertubeChannel.BannerImages, innertubeChannel.Id, "banners", LibraryConstants.FileTypes.ChannelBanner, LibraryConstants.Directories.SubDirChannels);
+            
             var changed = await context.SaveChangesAsync(cancellationToken);
             return changed <= 0 ? ResultError.Fail("Failed to save channel!") : Result.Success();
         }
@@ -251,6 +223,7 @@ public class LibraryService : ILibraryService
         try
         {
             await using var context = await _dbContextFactory.CreateDbContextAsync(cancellationToken);
+            var libraryDriveInfo = GetLibraryDriveInfo(_libraryDirectory);
             var libInfo = new LibraryInformation
             {
                 LibraryPath = _libraryDirectory.FullName,
@@ -258,7 +231,10 @@ public class LibraryService : ILibraryService
                 LastModifiedUtc = _libraryDirectory.LastWriteTimeUtc,
                 TotalChannels = await context.Channels.CountAsync(cancellationToken: cancellationToken),
                 TotalMedia = await context.Media.CountAsync(cancellationToken: cancellationToken),
-                TotalSizeBytes = GetDirectorySize(_libraryDirectory)
+                TotalSizeBytes = GetDirectorySize(_libraryDirectory),
+                DriveTotalSpaceBytes = libraryDriveInfo.totalSpace,
+                DriveFreeSpaceBytes = libraryDriveInfo.freeSpace,
+                DriveUsedSpaceBytes = libraryDriveInfo.usedSpace
             };
             return libInfo;
         }
@@ -380,6 +356,20 @@ public class LibraryService : ILibraryService
         }
     }
 
+    private (long totalSpace, long freeSpace, long usedSpace) GetLibraryDriveInfo(DirectoryInfo dir)
+    {
+        try
+        {
+            var drive = new DriveInfo(dir.FullName);
+            return (drive.TotalSize, drive.AvailableFreeSpace, drive.TotalSize - drive.AvailableFreeSpace);
+        }
+        catch (Exception e)
+        {
+            _logger.LogError(e, "Error while getting directory free space.");
+            throw;
+        }
+    }
+
     private ResultError HandleException(Exception exception)
     {
         if (exception is OperationCanceledException)

Manager.App/Services/System/CacheService.cs

@@ -2,6 +2,7 @@ using System.Security.Cryptography;
 using System.Text;
 using DotBased.Logging;
 using DotBased.Monads;
+using DotBased.Utilities;
 using Manager.Data.Contexts;
 using Manager.Data.Entities.Cache;
 using Manager.YouTube;
@@ -10,23 +11,45 @@ using Microsoft.EntityFrameworkCore.Infrastructure;
 
 namespace Manager.App.Services.System;
 
-public class CacheService(ILogger<CacheService> logger, IHostEnvironment environment) : ExtendedBackgroundService(nameof(CacheService), "Manages caching.", logger, TimeSpan.FromHours(5))
+public class CacheService(ILogger<CacheService> logger, IHostEnvironment environment)
+    : ExtendedBackgroundService(nameof(CacheService), "Manages caching.", logger, TimeSpan.FromHours(5))
 {
     private DirectoryInfo? _cacheDirectory;
     private PooledDbContextFactory<CacheDbContext>? _dbContextFactory;
     private const string DataSubDir = "data";
-    
+    private const int CacheMaxAgeDays = 1;
+    private readonly SemaphoreSlim _cacheSemaphoreSlim = new(1, 1);
+
     protected override Task InitializeAsync(CancellationToken stoppingToken)
     {
         _cacheDirectory = new DirectoryInfo(Path.Combine(Directory.GetCurrentDirectory(), "cache"));
         _cacheDirectory.Create();
         Directory.CreateDirectory(Path.Combine(_cacheDirectory.FullName, DataSubDir));
         LogEvent($"Cache directory: {_cacheDirectory.FullName}");
-        
+
+        AddActions([
+            new ServiceAction("Clear cache", "Manually clear cache", () =>
+            {
+                LogEvent("Manual cache clear requested.");
+                _ = Task.Run(async () =>
+                {
+                    try
+                    {
+                        await ClearCacheAsync(stoppingToken);
+                    }
+                    catch (Exception e)
+                    {
+                        logger.LogError(e, "Error clearing cache manually!");
+                        LogEvent("Error manually clearing cache.", LogSeverity.Error);
+                    }
+                }, stoppingToken);
+            }, () => true)
+        ]);
+
         var dbContextOptionsBuilder = new DbContextOptionsBuilder<CacheDbContext>();
         dbContextOptionsBuilder.UseSqlite($"Data Source={Path.Combine(_cacheDirectory.FullName, "cache_index.db")}");
         _dbContextFactory = new PooledDbContextFactory<CacheDbContext>(dbContextOptionsBuilder.Options);
-        
+
         return Task.CompletedTask;
     }
 
@@ -72,20 +95,24 @@ public class CacheService(ILogger<CacheService> logger, IHostEnvironment environ
             }
 
             await using var context = await _dbContextFactory.CreateDbContextAsync(cancellationToken);
-            
+
             var urlKeyBytes = SHA1.HashData(Encoding.UTF8.GetBytes(url));
             var urlKey = Convert.ToHexString(urlKeyBytes);
-            var cacheEntity = await context.Cache.FirstOrDefaultAsync(c => c.Id == urlKey, cancellationToken: cancellationToken);
+            var cacheEntity =
+                await context.Cache.FirstOrDefaultAsync(c => c.Id == urlKey, cancellationToken: cancellationToken);
             if (cacheEntity == null)
             {
-                var downloadResult = await NetworkService.DownloadBytesAsync(new HttpRequestMessage(HttpMethod.Get, url));
+                var downloadResult =
+                    await NetworkService.DownloadBytesAsync(new HttpRequestMessage(HttpMethod.Get, url));
                 if (!downloadResult.IsSuccess)
                 {
                     LogEvent($"Failed to download from url: {url}");
                     return ResultError.Fail("Download failed.");
                 }
+
                 var download = downloadResult.Value;
-                await using var downloadFile = File.Create(Path.Combine(_cacheDirectory.FullName, DataSubDir, $"{urlKey}.cache"));
+                await using var downloadFile =
+                    File.Create(Path.Combine(_cacheDirectory.FullName, DataSubDir, $"{urlKey}.cache"));
                 await downloadFile.WriteAsync(download.Data.AsMemory(0, download.Data.Length), cancellationToken);
 
                 cacheEntity = new CacheEntity
@@ -96,7 +123,7 @@ public class CacheService(ILogger<CacheService> logger, IHostEnvironment environ
                     ContentType = download.ContentType,
                     OriginalFileName = download.FileName,
                 };
-                
+
                 context.Cache.Add(cacheEntity);
                 var saved = await context.SaveChangesAsync(cancellationToken);
                 if (saved <= 0)
@@ -126,58 +153,71 @@ public class CacheService(ILogger<CacheService> logger, IHostEnvironment environ
 
     private async Task ClearCacheAsync(CancellationToken cancellationToken)
     {
-        if (_dbContextFactory == null)
+        if (!await _cacheSemaphoreSlim.WaitAsync(0, cancellationToken))
         {
-            throw new InvalidOperationException("No DbContext factory configured.");
+            LogEvent("The cache cleaning task is already running. Skipping this call.", LogSeverity.Warning);
-        }
-
-        if (_cacheDirectory == null)
-        {
-            throw new InvalidOperationException("No cache directory configured.");
-        }
-
-        await using var dbContext = await _dbContextFactory.CreateDbContextAsync(cancellationToken);
-        
-        var toRemove = dbContext.Cache.Where(c => c.CachedAtUtc < DateTime.UtcNow.AddDays(-1));
-        if (!toRemove.Any())
-        {
-            LogEvent("No items found to purge from cache.");
             return;
         }
 
-        var totalToRemove = toRemove.Count();
+        try
-        LogEvent($"Found {totalToRemove} cache items that are older than 1 day(s)");
-        
-        var deleted = new List<CacheEntity>();
-        foreach (var entity in toRemove)
         {
-            var pathToFile = Path.Combine(_cacheDirectory.FullName, DataSubDir, $"{entity.Id}.cache");
+            if (_dbContextFactory == null)
-            if (!File.Exists(pathToFile))
+                throw new InvalidOperationException("No DbContext factory configured.");
+
+            if (_cacheDirectory == null)
+                throw new InvalidOperationException("No cache directory configured.");
+
+            await using var dbContext = await _dbContextFactory.CreateDbContextAsync(cancellationToken);
+
+            var toRemove = dbContext.Cache.Where(c => c.CachedAtUtc < DateTime.UtcNow.AddDays(-CacheMaxAgeDays));
+            if (!toRemove.Any())
             {
+                LogEvent($"No items older than {CacheMaxAgeDays} day(s) found to clear from cache.");
+                return;
+            }
+
+            var totalToRemove = toRemove.Count();
+            LogEvent($"Found {totalToRemove} cache items that are older than 1 day(s)");
+
+            var deleted = new List<CacheEntity>();
+            long totalBytesRemoved = 0;
+            foreach (var entity in toRemove)
+            {
+                var pathToFile = Path.Combine(_cacheDirectory.FullName, DataSubDir, $"{entity.Id}.cache");
+                if (!File.Exists(pathToFile))
+                {
+                    deleted.Add(entity);
+                    totalBytesRemoved += entity.ContentLength;
+                    continue;
+                }
+
+                try
+                {
+                    File.Delete(pathToFile);
+                }
+                catch (Exception e)
+                {
+                    logger.LogError(e, "Failed to delete cache entity with id: {EntityId}. Skipping cache entity...",
+                        entity.Id);
+                    continue;
+                }
+
+                totalBytesRemoved += entity.ContentLength;
                 deleted.Add(entity);
-                continue;
             }
 
-            try
+            dbContext.RemoveRange(deleted);
-            {
+            var dbDeleted = await dbContext.SaveChangesAsync(cancellationToken);
-                File.Delete(pathToFile);
+
-            }
+            if (dbDeleted < deleted.Count)
-            catch (Exception e)
+                LogEvent("Could not delete all files from cache.", LogSeverity.Warning);
-            {
+
-                logger.LogError(e, "Failed to delete cache entity with id: {EntityId}. Skipping cache entity...", entity.Id);
+            LogEvent($"Removed {dbDeleted}/{totalToRemove} items from cache. Total of {Suffix.BytesToSizeSuffix(totalBytesRemoved)} removed from disk.");
-                continue;
-            }
-            deleted.Add(entity);
         }
-        
+        finally
-        dbContext.RemoveRange(deleted);
-        var dbDeleted = await dbContext.SaveChangesAsync(cancellationToken);
-        if (dbDeleted < deleted.Count)
         {
-            LogEvent("Could not delete all files from cache.", LogSeverity.Warning);
+            _cacheSemaphoreSlim.Release();
         }
-
-        LogEvent($"Removed {dbDeleted}/{totalToRemove} items");
     }
 }
 

Manager.App/Services/System/ClientService.cs

@@ -1,6 +1,7 @@
 using System.Net;
 using DotBased.Logging;
 using DotBased.Monads;
+using Manager.App.Models.System;
 using Manager.Data.Entities.LibraryContext;
 using Manager.YouTube;
 
@@ -30,26 +31,48 @@ public class ClientService(IServiceScopeFactory scopeFactory, ILogger<ClientServ
         }
     }
     
-    private async void CancellationRequested()
+    private void CancellationRequested()
     {
         foreach (var client in _loadedClients)
         {
-            await SaveClientAsync(client);
             client.Dispose();
         }
     }
 
-    public async Task<Result> AddClientByIdAsync(string id, CancellationToken stoppingToken = default)
+    public async Task<ListResult<YouTubeClientItem>> GetClientsAsync(string? search, int offset = 0, int limit = 10, CancellationToken cancellationToken = default)
     {
         if (_libraryService == null)
         {
             return ResultError.Fail("Library service is not initialized!.");
         }
+
+        var accountsResult = await _libraryService.GetAccountsAsync(search, offset, limit, cancellationToken);
+        if (!accountsResult.IsSuccess)
+        {
+            return accountsResult.Error ?? ResultError.Fail("Failed to get accounts!");
+        }
+
+        var comparedClients = accountsResult.Value.Select(x => new YouTubeClientItem(x)
+            { Id = x.Id, IsLoaded = _loadedClients.Contains(x.Id) }).ToList();
+        return new ListResultReturn<YouTubeClientItem>(comparedClients, accountsResult.Total);
+    }
+
+    public async Task<Result<YouTubeClient>> LoadClientByIdAsync(string id, CancellationToken cancellationToken = default)
+    {
+        if (_loadedClients.TryGetValue(id, out var client))
+        {
+            return client;
+        }
         
-        var clientResult = await _libraryService.GetChannelByIdAsync(id, stoppingToken);
+        if (_libraryService == null)
+        {
+            return ResultError.Fail("Library service is not initialized!.");
+        }
+
+        var clientResult = await _libraryService.GetChannelByIdAsync(id, cancellationToken);
         if (!clientResult.IsSuccess)
         {
-            return clientResult;
+            return clientResult.Error ?? ResultError.Fail("Failed to load channel from database!");
         }
 
         var clientAcc = clientResult.Value.ClientAccount;
@@ -79,18 +102,8 @@ public class ClientService(IServiceScopeFactory scopeFactory, ILogger<ClientServ
             return ytClientResult;
         }
 
-        AddClient(ytClientResult.Value);
+        _loadedClients.Add(ytClientResult.Value);
-        return Result.Success();
+        return ytClientResult.Value;
-    }
-
-    public void AddClient(YouTubeClient client)
-    {
-        if (_loadedClients.Contains(client))
-        {
-            return;
-        }
-
-        _loadedClients.Add(client);
     }
 
     public async Task<Result> SaveClientAsync(YouTubeClient client, CancellationToken cancellationToken = default)
@@ -105,9 +118,11 @@ public class ClientService(IServiceScopeFactory scopeFactory, ILogger<ClientServ
             LogEvent("Failed to store client no ID!", LogSeverity.Warning);
             return ResultError.Fail("Client does not have an ID, cannot save to library database!");
         }
+        
+        _loadedClients.Add(client);
 
         List<HttpCookieEntity> httpCookies = [];
-        httpCookies.AddRange(client.CookieContainer.GetAllCookies()
+        httpCookies.AddRange(client.CookieContainer.GetAllCookies().Where(c => c.Expires != DateTime.MinValue)
         .ToList()
         .Select(cookie => new HttpCookieEntity
         {

Manager.Data/Contexts/AuditInterceptor.cs

@@ -56,7 +56,7 @@ public class AuditInterceptor : SaveChangesInterceptor
                     break;
                 case EntityState.Modified:
                     audits.AddRange(allowedProperties
-                            .Where(p => p.IsModified)
+                            .Where(p => p.IsModified && !Equals(p.OriginalValue, p.CurrentValue))
                             .Select(p => CreateAudit(entry, p, entry.State, primaryKey))
                     );
                     break;
@@ -82,7 +82,7 @@ public class AuditInterceptor : SaveChangesInterceptor
             EntityName = entry.Entity.GetType().Name,
             EntityId = primaryKey ?? "Unknown",
             PropertyName = prop.Metadata.Name,
-            OldValue = SerializeValue(prop.OriginalValue),
+            OldValue = changeType == EntityState.Added ? null : SerializeValue(prop.OriginalValue),
             NewValue = SerializeValue(prop.CurrentValue),
             ModifiedUtc = DateTime.UtcNow,
             ChangedBy = "SYSTEM",

Manager.YouTube/Constants/CookieConstants.cs

@@ -0,0 +1,22 @@
+namespace Manager.YouTube.Constants;
+
+public static class CookieConstants
+{
+    public static readonly IReadOnlyCollection<string> RequiredCookiesNames = new HashSet<string>
+    {
+        "SID",
+        "SIDCC",
+        "HSID",
+        "SSID",
+        "APISID",
+        "SAPISID",
+        "__Secure-1PAPISID",
+        "__Secure-1PSID",
+        "__Secure-1PSIDCC",
+        "__Secure-1PSIDTS",
+        "__Secure-3PAPISID",
+        "__Secure-3PSID",
+        "__Secure-3PSIDCC",
+        "__Secure-3PSIDTS"
+    };
+}

Manager.YouTube/Interpreter/JavaScriptEngineManager.cs

@@ -0,0 +1,58 @@
+using System.Text;
+using DotBased.Monads;
+
+namespace Manager.YouTube.Interpreter;
+
+public static class JavaScriptEngineManager
+{
+    private static readonly PlayerEngineCollection Engines = [];
+    
+    public static 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/ClientState.cs

@@ -35,6 +35,9 @@ public class ClientState : AdditionalJsonData
     [JsonPropertyName("SERVER_VERSION")]
     public string? ServerVersion { get; set; }
 
+    [JsonPropertyName("PLAYER_JS_URL")]
+    public string? PlayerJsUrl { get; set; }
+
     [JsonPropertyName("INNERTUBE_CONTEXT")]
     public InnerTubeContext? InnerTubeContext { get; set; }
 

Manager.YouTube/Models/Innertube/ColorInfo.cs

@@ -0,0 +1,13 @@
+using System.Text.Json.Serialization;
+
+namespace Manager.YouTube.Models.Innertube;
+
+public class ColorInfo
+{
+    [JsonPropertyName("primaries")]
+    public string Primaries { get; set; } = "";
+    [JsonPropertyName("transferCharacteristics")]
+    public string TransferCharacteristics { get; set; } = "";
+    [JsonPropertyName("matrixCoefficients")]
+    public string MatrixCoefficients { get; set; } = "";
+}

Manager.YouTube/Models/Innertube/Range.cs

@@ -0,0 +1,11 @@
+using System.Text.Json.Serialization;
+
+namespace Manager.YouTube.Models.Innertube;
+
+public class Range
+{
+    [JsonPropertyName("start")]
+    public uint Start { get; set; }
+    [JsonPropertyName("end")]
+    public uint End { get; set; }
+}

Manager.YouTube/Models/Innertube/StoryBoard.cs

@@ -0,0 +1,8 @@
+namespace Manager.YouTube.Models.Innertube;
+
+public class StoryBoard
+{
+    public string Spec { get; set; } = "";
+    public int RecommendedLevel { get; set; }
+    public int HighResolutionRecommendedLevel { get; set; }
+}

Manager.YouTube/Models/Innertube/StreamingData.cs

@@ -0,0 +1,18 @@
+using System.Text.Json.Serialization;
+using Manager.YouTube.Util.Converters;
+
+namespace Manager.YouTube.Models.Innertube;
+
+public class StreamingData
+{
+    public DateTime FetchedUtc { get; set; } = DateTime.UtcNow;
+    [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; } = [];
+    [JsonPropertyName("adaptiveFormats")]
+    public List<StreamingFormat> AdaptiveFormats { get; set; } = [];
+}

Manager.YouTube/Models/Innertube/StreamingFormat.cs

@@ -0,0 +1,59 @@
+using System.Text.Json.Serialization;
+
+namespace Manager.YouTube.Models.Innertube;
+
+public class StreamingFormat
+{
+    [JsonPropertyName("itag")]
+    public int Itag { get; set; }
+    [JsonPropertyName("url")]
+    public string? Url { get; set; }
+    [JsonPropertyName("mimeType")]
+    public string MimeType { get; set; } = "";
+    [JsonPropertyName("bitrate")]
+    public uint Bitrate { get; set; }
+    [JsonPropertyName("width")]
+    public uint? Width { get; set; }
+    [JsonPropertyName("height")]
+    public uint? Height { get; set; }
+    [JsonPropertyName("initRange")]
+    public Range? InitRange { get; set; }
+    [JsonPropertyName("indexRange")]
+    public Range? IndexRange { get; set; }
+    [JsonPropertyName("lastModified")]
+    public long LastModified { get; set; }
+    [JsonPropertyName("contentLength")]
+    public long ContentLength { get; set; }
+    [JsonPropertyName("quality")]
+    public string Quality { get; set; } = "";
+    [JsonPropertyName("xtags")]
+    public string? Xtags { get; set; }
+    [JsonPropertyName("fps")]
+    public uint Fps { get; set; }
+    [JsonPropertyName("qualityLabel")]
+    public string QualityLabel { get; set; } = "";
+    [JsonPropertyName("projectionType")]
+    public string ProjectionType { get; set; } = "";
+    [JsonPropertyName("averagebitrate")]
+    public uint? AverageBitrate { get; set; }
+    [JsonPropertyName("highReplication")]
+    public bool? HighReplication { get; set; }
+    [JsonPropertyName("colorInfo")]
+    public ColorInfo? ColorInfo { get; set; }
+    [JsonPropertyName("audioQuality")]
+    public string? AudioQuality { get; set; } = "";
+    [JsonPropertyName("approxDurationMs")]
+    public long ApproxDurationMs { get; set; }
+    [JsonPropertyName("audioSampleRate")]
+    public int? AudioSampleRate { get; set; }
+    [JsonPropertyName("audioChannels")]
+    public int? AudioChannels { get; set; }
+    [JsonPropertyName("loudnessDb")]
+    public double? LoudnessDb { get; set; }
+    [JsonPropertyName("isDrc")]
+    public bool? IsDrc { get; set; }
+    [JsonPropertyName("signatureCipher")]
+    public string? SignatureCipher { get; set; }
+    [JsonPropertyName("qualityOrdinal")]
+    public string QualityOrdinal { get; set; } = "";
+}

Manager.YouTube/Models/Innertube/WebImage.cs

@@ -1,8 +1,13 @@
+using System.Text.Json.Serialization;
+
 namespace Manager.YouTube.Models.Innertube;
 
 public class WebImage
 {
+    [JsonPropertyName("width")]
     public int Width { get; set; }
+    [JsonPropertyName("height")]
     public int Height { get; set; }
+    [JsonPropertyName("url")]
     public string Url { get; set; } = "";
 }

Manager.YouTube/Models/Parser/YouTubeVideoData.cs

@@ -0,0 +1,9 @@
+using System.Text.Json.Nodes;
+
+namespace Manager.YouTube.Models.Parser;
+
+public class YouTubeVideoData
+{
+    public JsonNode? YouTubePlayerData { get; set; }
+    public JsonNode? YouTubeInitialData { get; set; }
+}

Manager.YouTube/Models/PlayerConfig.cs

@@ -0,0 +1,12 @@
+namespace Manager.YouTube.Models;
+
+public class PlayerConfig
+{
+    public double AudioLoudnessDb { get; set; }
+    public double AudioPerceptualLoudnessDb { get; set; }
+    public bool AudioEnablePerFormatLoudness { get; set; }
+    public uint MaxBitrate { get; set; }
+    public uint MaxReadAheadMediaTimeMs { get; set; }
+    public uint MinReadAheadMediaTimeMs { get; set; }
+    public uint ReadAheadGrowthRateMs { get; set; }
+}

Manager.YouTube/Models/Playlist/PlaylistVideo.cs

@@ -0,0 +1,13 @@
+using Manager.YouTube.Models.Innertube;
+
+namespace Manager.YouTube.Models.Playlist;
+
+public class PlaylistVideo
+{
+    public required string VideoId { get; set; }
+    public List<WebImage> Thumbnails { get; set; } = [];
+    public required string Title { get; set; }
+    public required string Author { get; set; }
+    public long LengthSeconds { get; set; }
+    public bool IsPlayable { get; set; }
+}

Manager.YouTube/Models/YouTubePlaylist.cs

@@ -0,0 +1,19 @@
+using Manager.YouTube.Models.Playlist;
+
+namespace Manager.YouTube.Models;
+
+public class YouTubePlaylist
+{
+    public required string Id { get; set; }
+    public required string Title { get; set; }
+    public required string Description { get; set; }
+    public required string Owner { get; set; }
+    public required string OwnerId { get; set; }
+    public bool NoIndex { get; set; }
+    public bool Unlisted { get; set; }
+    public bool CanReorder { get; set; }
+    public bool IsEditable { get; set; }
+    public List<PlaylistVideo> Videos { get; set; } = [];
+
+    public string? ContinuationToken { get; set; }
+}

Manager.YouTube/Models/YouTubeVideo.cs

@@ -0,0 +1,38 @@
+using Manager.YouTube.Models.Innertube;
+
+namespace Manager.YouTube.Models;
+
+public class YouTubeVideo
+{
+    public required string VideoId { get; set; }
+    public string Title { get; set; } = "";
+    public string Description { get; set; } = "";
+    public string[] HashTags { get; set; } = [];
+    public long ViewCount { get; set; }
+    public long LikeCount { get; set; }
+    public string ChannelId { get; set; } = "";
+    public string Author { get; set; } = "";
+    public string PlayabilityStatus { get; set; } = "";
+    public long LengthSeconds { get; set; }
+    public string[] Keywords { get; set; } = [];
+    public bool IsOwnerViewing { get; set; }
+    public bool AllowRating { get; set; }
+    public bool IsCrawlable { get; set; }
+    public bool IsPrivate { get; set; }
+    public bool IsUnpluggedCorpus { get; set; }
+    public bool IsLive { get; set; }
+    public bool IsFamilySave { get; set; }
+    public string[] AvailableCountries { get; set; } = [];
+    public bool IsUnlisted { get; set; }
+    public bool HasYpcMetadata { get; set; }
+    public DateTime PublishDate { get; set; }
+    public DateTime UploadDate { get; set; }
+    public bool IsShortsEligible { get; set; }
+    public string Category { get; set; } = "";
+
+    public StreamingData? StreamingData { get; set; }
+    public List<WebImage> Thumbnails { get; set; } = [];
+
+    public PlayerConfig? PlayerConfig { get; set; }
+    public StoryBoard? StoryBoard { get; set; }
+}

Manager.YouTube/NetworkService.cs

@@ -8,7 +8,7 @@ public static class NetworkService
     public const string Origin = "https://www.youtube.com";
     private static readonly HttpClient HttpClient = new();
 
-    public static async Task<Result<string>> MakeRequestAsync(HttpRequestMessage request, YouTubeClient client, bool skipAuthenticationHeader = false)
+    public static async Task<Result<string>> MakeRequestAsync(HttpRequestMessage request, YouTubeClient client, bool skipAuthenticationHeader = false, CancellationToken cancellationToken = default)
     {
         request.Headers.Add("Origin", Origin);
         request.Headers.UserAgent.ParseAdd(client.UserAgent);
@@ -19,8 +19,8 @@ public static class NetworkService
 
         try
         {
-            var response = await client.HttpClient.SendAsync(request);
+            var response = await client.HttpClient.SendAsync(request, cancellationToken);
-            var contentString = await response.Content.ReadAsStringAsync();
+            var contentString = await response.Content.ReadAsStringAsync(cancellationToken);
             if (!response.IsSuccessStatusCode)
             {
                 return ResultError.Fail(contentString);

Manager.YouTube/Parsers/CookieTxtParser.cs

@@ -0,0 +1,53 @@
+using System.Net;
+
+namespace Manager.YouTube.Parsers;
+
+public static class CookieTxtParser
+{
+    public static async Task<CookieCollection> ParseAsync(Stream stream, HashSet<string>? allowedCookies = null)
+    {
+        var cookieCollection = new CookieCollection();
+        
+        using var reader = new StreamReader(stream);
+        while (await reader.ReadLineAsync() is { } line)
+        {
+            if (string.IsNullOrWhiteSpace(line) || line.StartsWith('#'))
+            {
+                continue;
+            }
+
+            var lineParts = line.Split('\t');
+            if (lineParts.Length < 7)
+            {
+                continue;
+            }
+
+            var domain = lineParts[0];
+            //var includeSubdomains = lineParts[1].Equals("TRUE", StringComparison.OrdinalIgnoreCase);
+            var path = lineParts[2];
+            var secure = lineParts[3].Equals("TRUE", StringComparison.OrdinalIgnoreCase);
+            var unixExpiry = long.TryParse(lineParts[4], out var exp) ? exp : 0;
+            var name = lineParts[5];
+            var value = lineParts[6];
+            
+            if (!allowedCookies?.Contains(name) ?? false)
+            {
+                continue;
+            }
+
+            var cookie = new Cookie(name, value, path, domain)
+            {
+                Secure = secure
+            };
+            
+            if (unixExpiry is > 0 and < int.MaxValue)
+            {
+                cookie.Expires = DateTimeOffset.FromUnixTimeSeconds(unixExpiry).DateTime;
+            }
+
+            cookieCollection.Add(cookie);
+        }
+
+        return cookieCollection;
+    }
+}

Manager.YouTube/Parsers/HtmlParser.cs

@@ -1,5 +1,7 @@
+using System.Text.Json.Nodes;
 using DotBased.Monads;
 using HtmlAgilityPack;
+using Manager.YouTube.Models.Parser;
 
 namespace Manager.YouTube.Parsers;
 
@@ -31,7 +33,57 @@ public static class HtmlParser
 
         return (json, isPremiumUser);
     }
-    
+
+    public static Result<YouTubeVideoData> GetVideoDataFromHtml(string html)
+    {
+        if (string.IsNullOrWhiteSpace(html))
+        {
+            return ResultError.Fail("html cannot be empty!");
+        }
+        var htmlDocument = new HtmlDocument();
+        htmlDocument.LoadHtml(html);
+
+        const string initialYoutubeData = "var ytInitialPlayerResponse = {";
+        var initialPlayerDataNode = htmlDocument.DocumentNode.SelectSingleNode($"//script[contains(., '{initialYoutubeData}')]");
+        if (string.IsNullOrWhiteSpace(initialPlayerDataNode.InnerText))
+        {
+            return ResultError.Fail("Could not find {initialPlayerData} in html script nodes!");
+        }
+        var initialPlayerDataString = ExtractJson(initialPlayerDataNode.InnerText, "var ytInitialPlayerResponse = ");
+        if (string.IsNullOrWhiteSpace(initialPlayerDataString))
+        {
+            return ResultError.Fail("Failed to extract initial player date from JSON.");
+        }
+        var parsedPlayerInitialData = JsonNode.Parse(initialPlayerDataString);
+        
+        const string initialData = "var ytInitialData = {";
+        var initialDataNode = htmlDocument.DocumentNode.SelectSingleNode($"//script[contains(., '{initialData}')]");
+        if (string.IsNullOrWhiteSpace(initialDataNode.InnerText))
+        {
+            return ResultError.Fail("Could not find {initialData} in html script nodes!");
+        }
+        
+        var initialDataJsonString = ExtractJson(initialDataNode.InnerText, "var ytInitialData = ");
+        if (string.IsNullOrWhiteSpace(initialDataJsonString))
+        {
+            return ResultError.Fail("Failed to extract initial player date from JSON.");
+        }
+        var parsedInitialData = JsonNode.Parse(initialDataJsonString);
+
+        try
+        {
+            return new YouTubeVideoData
+            {
+                YouTubePlayerData = parsedPlayerInitialData,
+                YouTubeInitialData = parsedInitialData
+            };
+        }
+        catch (Exception e)
+        {
+            return ResultError.Error(e, "Could not parse youtube player data.");
+        }
+    }
+
     static string? ExtractJson(string input, string marker)
     {
         var start = input.IndexOf(marker, StringComparison.Ordinal);

Manager.YouTube/Parsers/Json/JsonParser.cs

@@ -1,4 +1,6 @@
+using System.Text;
 using System.Text.Json;
+using System.Text.Json.Nodes;
 using Manager.YouTube.Models.Innertube;
 
 namespace Manager.YouTube.Parsers.Json;
@@ -9,4 +11,81 @@ public static class JsonParser
         array
             .Select(image => new WebImage { Width = image.GetProperty("width").GetInt32(), Height = image.GetProperty("height").GetInt32(), Url = image.GetProperty("url").GetString() ?? "" })
             .ToList();
+    
+    public static string ExtractTextOrHtml(JsonNode? node)
+    {
+        if (node is not JsonObject nodeObj)
+        {
+            return "";
+        }
+
+        // Case 1: Simple text (no formatting)
+        if (nodeObj.TryGetPropertyValue("simpleText", out var simpleText))
+            return simpleText?.GetValue<string>() ?? string.Empty;
+
+        // Case 2: Runs (formatted text segments)
+        if (nodeObj.TryGetPropertyValue("runs", out var runs) && runs != null && runs.GetValueKind() == JsonValueKind.Array)
+        {
+            var sb = new StringBuilder();
+
+            foreach (var runNode in runs.AsArray())
+            {
+                if (runNode is not JsonObject run)
+                {
+                    continue;
+                }
+
+                var text = runNode["text"]?.GetValue<string>() ?? string.Empty;
+                var formatted = System.Net.WebUtility.HtmlEncode(text);
+
+                var bold = run.TryGetPropertyValue("bold", out var boldNode) && boldNode is JsonValue bv && bv.GetValue<bool>();
+
+                var italic = run.TryGetPropertyValue("italic", out var italicNode) && italicNode is JsonValue iv && iv.GetValue<bool>();
+
+                var underline = run.TryGetPropertyValue("underline", out var underlineNode) && underlineNode is JsonValue uv && uv.GetValue<bool>();
+
+                var strikethrough = run.TryGetPropertyValue("strikethrough", out var strikeNode) && strikeNode is JsonValue sv && sv.GetValue<bool>();
+
+                if (bold) formatted = $"<b>{formatted}</b>";
+                if (italic) formatted = $"<i>{formatted}</i>";
+                if (underline) formatted = $"<u>{formatted}</u>";
+                if (strikethrough) formatted = $"<s>{formatted}</s>";
+
+                if (run.TryGetPropertyValue("navigationEndpoint", out var nav) && nav is JsonObject navObj &&
+                    navObj.TryGetPropertyValue("url", out var urlProp))
+                {
+                    var url = urlProp?.GetValue<string>();
+                    if (!string.IsNullOrEmpty(url))
+                        formatted = $"<a href=\"{url}\">{formatted}</a>";
+                }
+
+                if (run.TryGetPropertyValue("emoji", out var emoji) && emoji is JsonObject emojiObj)
+                {
+                    if (emojiObj.TryGetPropertyValue("url", out var emojiUrl))
+                    {
+                        var src = emojiUrl?.GetValue<string>();
+                        if (!string.IsNullOrEmpty(src))
+                            formatted = $"<img src=\"{src}\" alt=\"{text}\" class=\"emoji\" />";
+                    }
+                }
+
+                sb.Append(formatted);
+            }
+
+            return sb.ToString();
+        }
+
+        return string.Empty;
+    }
+
+    public static List<WebImage> ExtractWebImages(JsonNode? node)
+    {
+        if (node == null)
+        {
+            return [];
+        }
+
+        var thumbnailsArray = node["thumbnails"];
+        return thumbnailsArray?.Deserialize<List<WebImage>>() ?? [];
+    }
 }

Manager.YouTube/Parsers/Json/VideoJsonParser.cs

@@ -0,0 +1,35 @@
+using System.Text.Json;
+using DotBased.Logging;
+using DotBased.Monads;
+using Manager.YouTube.Models;
+using Manager.YouTube.Models.Parser;
+using Manager.YouTube.Util.Converters;
+
+namespace Manager.YouTube.Parsers.Json;
+
+public static class VideoJsonParser
+{
+    private static readonly JsonSerializerOptions VideoParserOptions = new() { Converters = { new YouTubeVideoJsonConverter() } };
+    private static readonly ILogger Logger = LogService.RegisterLogger(typeof(VideoJsonParser), "Video JSON parser");
+    
+    public static Result<YouTubeVideo> ParseVideoData(YouTubeVideoData videoData)
+    {
+        if (videoData.YouTubePlayerData == null)
+        {
+            return ResultError.Fail("No initial video data found!");
+        }
+
+        YouTubeVideo? video;
+        try
+        {
+            video = videoData.YouTubePlayerData.Deserialize<YouTubeVideo>(VideoParserOptions);
+        }
+        catch (Exception e)
+        {
+            Logger.Error(e, "Failed to parse video data");
+            return ResultError.Fail("Failed to parse video data");
+        }
+        
+        return video != null? video : ResultError.Fail("Failed to parse video data!");
+    }
+}

Manager.YouTube/Util/Cipher/CipherDecoder.cs

@@ -0,0 +1,125 @@
+using System.Collections.Frozen;
+using System.Text;
+using System.Text.RegularExpressions;
+using Manager.YouTube.Util.Cipher.Operations;
+
+namespace Manager.YouTube.Util.Cipher;
+
+public partial class CipherDecoder
+{
+    public required string Version { get; init; }
+    public readonly IReadOnlySet<ICipherOperation> Operations;
+
+    private CipherDecoder(IEnumerable<ICipherOperation> operations)
+    {
+        Operations = operations.ToFrozenSet();
+        if (Operations.Count == 0)
+        {
+            throw new ArgumentNullException(nameof(operations), "No decipher operations given.");
+        }
+    }
+
+    public static async Task<CipherDecoder> CreateAsync(string relativeUrl, string version, YouTubeClient? client = null)
+    {
+        var operations = await GetCipherOperations(relativeUrl, client);
+        var decoder = new CipherDecoder(operations)
+        {
+            Version = version
+        };
+        return decoder;
+    }
+
+    public string Decipher(string? signatureCipher)
+    {
+        if (string.IsNullOrEmpty(signatureCipher))
+        {
+            return "";
+        }
+
+        var urlBuilder = new StringBuilder();
+
+        var indexStart = signatureCipher.IndexOf("s=", StringComparison.Ordinal);
+        var indexEnd = signatureCipher.IndexOf("&", StringComparison.Ordinal);
+        var signature = signatureCipher.Substring(indexStart, indexEnd);
+
+        indexStart = signatureCipher.IndexOf("&sp", StringComparison.Ordinal);
+        indexEnd = signatureCipher.IndexOf("&url", StringComparison.Ordinal);
+        var spParam = signatureCipher.Substring(indexStart, indexEnd - indexStart);
+
+        indexStart = signatureCipher.IndexOf("&url", StringComparison.Ordinal);
+        var videoUrl = signatureCipher[indexStart..];
+
+
+        signature = signature[(signature.IndexOf('=') + 1)..];
+        spParam = spParam[(spParam.IndexOf('=') + 1)..];
+        videoUrl = videoUrl[(videoUrl.IndexOf('=') + 1)..];
+        if (string.IsNullOrWhiteSpace(signature))
+        {
+            throw new InvalidOperationException("Invalid signature.");
+        }
+        var signatureDeciphered = Operations.Aggregate(signature, (acc, op) => op.Decipher(acc));
+
+        urlBuilder.Append(videoUrl);
+        urlBuilder.Append($"&{spParam}=");
+        urlBuilder.Append(signatureDeciphered);
+        return urlBuilder.ToString();
+    }
+
+    private static async Task<IEnumerable<ICipherOperation>> GetCipherOperations(string relativeUrl, YouTubeClient? client = null)
+    {
+        var downloadRequest = new HttpRequestMessage(HttpMethod.Get, new Uri($"{NetworkService.Origin}/{relativeUrl}"));
+        var downloadResponse = await NetworkService.DownloadBytesAsync(downloadRequest, client);
+        if (!downloadResponse.IsSuccess)
+        {
+            return [];
+        }
+
+        var playerJs = Encoding.UTF8.GetString(downloadResponse.Value.Data);
+        if (string.IsNullOrWhiteSpace(playerJs))
+        {
+            return [];
+        }
+        
+        var functionBody = FunctionBodyRegex().Match(playerJs).Groups[0].ToString();
+        var definitionBody = DefinitionBodyRegex().Match(functionBody).Groups[1].Value;
+        var decipherDefinition = Regex.Match(playerJs, $@"var\s+{definitionBody}=\{{(\w+:function\(\w+(,\w+)?\)\{{(.*?)\}}),?\}};", RegexOptions.Singleline).Groups[0].ToString();
+
+        SortedSet<ICipherOperation> operations = [];
+        foreach (var statement in functionBody.Split(';'))
+        {
+            // Get the name of the function called in this statement
+            var calledFuncName = StatementFunctionNameRegex().Match(statement).Groups[1].Value;
+            if (string.IsNullOrWhiteSpace(calledFuncName))
+                continue;
+
+            if (Regex.IsMatch(decipherDefinition, $@"{Regex.Escape(calledFuncName)}:\bfunction\b\([a],b\).(\breturn\b)?.?\w+\."))
+            {
+                var index = int.Parse(OperationIndexRegex().Match(statement).Groups[1].Value);
+                operations.Add(new CipherSlice(index));
+            }
+            else if (Regex.IsMatch(decipherDefinition, $@"{Regex.Escape(calledFuncName)}:\bfunction\b\(\w+\,\w\).\bvar\b.\bc=a\b"))
+            {
+                var index = int.Parse(OperationIndexRegex().Match(statement).Groups[1].Value);
+                operations.Add(new CipherSwap(index));
+            }
+            else if (Regex.IsMatch(decipherDefinition, $@"{Regex.Escape(calledFuncName)}:\bfunction\b\(\w+\)"))
+            {
+                operations.Add(new CipherReverse());
+            }
+        }
+
+        return operations;
+    }
+
+    
+    [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();
+    
+    
+    [GeneratedRegex(@"\(\w+,(\d+)\)")]
+    private static partial Regex OperationIndexRegex();
+    [GeneratedRegex(@"\w+(?:.|\[)(\""?\w+(?:\"")?)\]?\(")]
+    private static partial Regex StatementFunctionNameRegex();
+}

Manager.YouTube/Util/Cipher/CipherDecoderCollection.cs

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

Manager.YouTube/Util/Cipher/CipherManager.cs

@@ -0,0 +1,47 @@
+using DotBased.Logging;
+using DotBased.Monads;
+using Manager.YouTube.Models.Innertube;
+
+namespace Manager.YouTube.Util.Cipher;
+
+public static class CipherManager
+{
+    private static readonly CipherDecoderCollection LoadedCiphers = [];
+    private static readonly ILogger Logger = LogService.RegisterLogger(typeof(CipherManager));
+
+    public static async Task<Result<CipherDecoder>> GetDecoderAsync(ClientState clientState, YouTubeClient? client = null)
+    {
+        var relativePlayerJsUrl = clientState.PlayerJsUrl;
+        if (string.IsNullOrEmpty(relativePlayerJsUrl))
+        {
+            return ResultError.Fail("Could not get player js url.");
+        }
+        var version = GetCipherVersion(relativePlayerJsUrl);
+
+        Logger.Debug($"Getting cipher decoder for version: {version}");
+        if (LoadedCiphers.TryGetValue(version, out var cipher))
+        {
+            return cipher;
+        }
+        
+        try
+        {
+            var decoder = await CipherDecoder.CreateAsync(relativePlayerJsUrl, version, client);
+            LoadedCiphers.Add(decoder);
+        }
+        catch (Exception e)
+        {
+            Logger.Error(e, "Could not create cipher decoder. Version: {DecoderVersion}", version);
+        }
+        
+        return ResultError.Fail($"Could not create cipher decoder for {relativePlayerJsUrl} (v: {version})");
+    }
+
+    private static string GetCipherVersion(string relativePlayerUrl)
+    {
+        var split = relativePlayerUrl.Split('/', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
+        var v = split[2];
+        var lang = split[4];
+        return $"{v}_{lang}";
+    }
+}

Manager.YouTube/Util/Cipher/Operations/CipherReverse.cs

@@ -0,0 +1,18 @@
+using System.Text;
+
+namespace Manager.YouTube.Util.Cipher.Operations;
+
+public class CipherReverse : ICipherOperation
+{
+    public string Decipher(string cipherSignature)
+    {
+        var buffer = new StringBuilder(cipherSignature.Length);
+
+        for (var i = cipherSignature.Length - 1; i >= 0; i--)
+        {
+            buffer.Append(cipherSignature[i]);
+        }
+
+        return buffer.ToString();
+    }
+}

Manager.YouTube/Util/Cipher/Operations/CipherSlice.cs

@@ -0,0 +1,6 @@
+namespace Manager.YouTube.Util.Cipher.Operations;
+
+public class CipherSlice(int indexToSlice) : ICipherOperation
+{
+    public string Decipher(string cipherSignature) => cipherSignature[indexToSlice..];
+}

Manager.YouTube/Util/Cipher/Operations/CipherSwap.cs

@@ -0,0 +1,12 @@
+using System.Text;
+
+namespace Manager.YouTube.Util.Cipher.Operations;
+
+public class CipherSwap(int indexToSwap) : ICipherOperation
+{
+    public string Decipher(string cipherSignature) => new StringBuilder(cipherSignature)
+    {
+        [0] = cipherSignature[indexToSwap],
+        [indexToSwap] = cipherSignature[0]
+    }.ToString();
+}

Manager.YouTube/Util/Cipher/Operations/ICipherOperation.cs

@@ -0,0 +1,6 @@
+namespace Manager.YouTube.Util.Cipher.Operations;
+
+public interface ICipherOperation
+{
+    string Decipher(string cipherSignature);
+}

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();
+}

Manager.YouTube/Util/Converters/NumericJsonConverter.cs

@@ -0,0 +1,39 @@
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace Manager.YouTube.Util.Converters;
+
+public class NumericJsonConverter<T> : JsonConverter<T> where T : struct, IConvertible
+{
+    public override T Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+    {
+        try
+        {
+            if (reader.TokenType == JsonTokenType.Number)
+            {
+                // Direct numeric value
+                return (T)Convert.ChangeType(reader.GetDouble(), typeof(T));
+            }
+
+            if (reader.TokenType == JsonTokenType.String)
+            {
+                var str = reader.GetString();
+                if (string.IsNullOrWhiteSpace(str))
+                    throw new JsonException("Empty string cannot be converted to a number.");
+
+                return (T)Convert.ChangeType(str, typeof(T));
+            }
+
+            throw new JsonException($"Unexpected token {reader.TokenType} for type {typeof(T)}.");
+        }
+        catch (Exception ex)
+        {
+            throw new JsonException($"Error converting value to {typeof(T)}.", ex);
+        }
+    }
+
+    public override void Write(Utf8JsonWriter writer, T value, JsonSerializerOptions options)
+    {
+        writer.WriteNumberValue(Convert.ToDouble(value));
+    }
+}

Manager.YouTube/Util/Converters/YouTubeVideoJsonConverter.cs

@@ -0,0 +1,121 @@
+using System.Runtime.Serialization;
+using System.Text.Json;
+using System.Text.Json.Nodes;
+using System.Text.Json.Serialization;
+using DotBased.Logging;
+using Manager.YouTube.Models;
+using Manager.YouTube.Models.Innertube;
+using Manager.YouTube.Parsers.Json;
+
+namespace Manager.YouTube.Util.Converters;
+
+public class YouTubeVideoJsonConverter : JsonConverter<YouTubeVideo>
+{
+    private readonly ILogger _logger = LogService.RegisterLogger<YouTubeVideoJsonConverter>();
+    private readonly JsonSerializerOptions _serializerOptions = new()
+    {
+        Converters = {
+            new NumericJsonConverter<int>(),
+            new NumericJsonConverter<uint>(),
+            new NumericJsonConverter<long>(),
+            new NumericJsonConverter<double>(),
+            new NumericJsonConverter<decimal>() },
+        PropertyNameCaseInsensitive = true
+    };
+
+    public override YouTubeVideo Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+    {
+        var node = JsonNode.Parse(ref reader);
+        if (node == null)
+        {
+            throw new SerializationException("Failed to parse JSON reader.");
+        }
+        
+        var rootObject = node.AsObject();
+        
+        var playabilityStatus = rootObject["playabilityStatus"];
+        var streamingDataJson = rootObject["streamingData"];
+        var videoDetails = rootObject["videoDetails"];
+        var playerConfigJson = rootObject["playerConfig"];
+        var microformat = rootObject["microformat"]?["playerMicroformatRenderer"];
+        
+        var videoId = videoDetails?["videoId"]?.GetValue<string>() ?? microformat?["externalVideoId"]?.GetValue<string>();
+        if (string.IsNullOrEmpty(videoId))
+        {
+            throw new SerializationException("Failed to get videoId");
+        }
+        
+        var thumbnails = JsonParser.ExtractWebImages(videoDetails?["thumbnail"]);
+        thumbnails.AddRange(JsonParser.ExtractWebImages(microformat?["thumbnail"]));
+
+        var streamingData = streamingDataJson.Deserialize<StreamingData>(_serializerOptions);
+        var playerConfig = ExtractPlayerConfig(playerConfigJson);
+        
+        var video = new YouTubeVideo
+        {
+            VideoId = videoId,
+            Title = JsonParser.ExtractTextOrHtml(microformat?["title"]),
+            Description = JsonParser.ExtractTextOrHtml(microformat?["description"]),
+            ViewCount = long.TryParse(microformat?["viewCount"]?.GetValue<string>(), out var viewCountParsed) ? viewCountParsed : -1,
+            LikeCount = long.TryParse(microformat?["likeCount"]?.GetValue<string>(), out var likeCountParsed) ? likeCountParsed : -1,
+            ChannelId = videoDetails?["channelId"]?.GetValue<string>() ?? "",
+            Author = videoDetails?["author"]?.GetValue<string>() ?? "",
+            PlayabilityStatus = playabilityStatus?["status"]?.GetValue<string>() ?? "",
+            LengthSeconds = long.TryParse(videoDetails?["lengthSeconds"]?.GetValue<string>(), out var lengthSecondsParsed) ? lengthSecondsParsed : -1,
+            Keywords = videoDetails?["keywords"]?.AsArray().Select(v => v?.GetValue<string>() ?? "").ToArray() ?? [],
+            IsOwnerViewing = videoDetails?["isOwnerViewing"]?.GetValue<bool>() ?? false,
+            AllowRating = videoDetails?["allowRating"]?.GetValue<bool>() ?? false,
+            IsCrawlable = videoDetails?["isCrawlable"]?.GetValue<bool>() ?? false,
+            IsPrivate = videoDetails?["isPrivate"]?.GetValue<bool>() ?? false,
+            IsUnpluggedCorpus = videoDetails?["isUnpluggedCorpus"]?.GetValue<bool>() ?? false,
+            IsLive = videoDetails?["isLiveContent"]?.GetValue<bool>() ?? false,
+            IsFamilySave = microformat?["isFamilySave"]?.GetValue<bool>() ?? false,
+            AvailableCountries = microformat?["availableCountries"]?.AsArray().Select(v => v?.GetValue<string>() ?? "").ToArray() ?? [],
+            IsUnlisted = microformat?["isUnlisted"]?.GetValue<bool>() ?? false,
+            HasYpcMetadata = microformat?["hasYpcMetadata"]?.GetValue<bool>() ?? false,
+            PublishDate = DateTime.TryParse(microformat?["publishDate"]?.GetValue<string>(), out var parsedPublishDate) ? parsedPublishDate : DateTime.MinValue,
+            UploadDate = DateTime.TryParse(microformat?["uploadDate"]?.GetValue<string>(), out var parsedUploadDate) ? parsedUploadDate : DateTime.MinValue,
+            IsShortsEligible = microformat?["isShortsEligible"]?.GetValue<bool>() ?? false,
+            Category = microformat?["category"]?.GetValue<string>() ?? "",
+            StreamingData = streamingData,
+            Thumbnails = thumbnails,
+            PlayerConfig = playerConfig
+        };
+        
+        return video;
+    }
+
+    public override void Write(Utf8JsonWriter writer, YouTubeVideo value, JsonSerializerOptions options)
+    {
+        throw new NotImplementedException("Converter only supports reading.");
+    }
+
+    private PlayerConfig? ExtractPlayerConfig(JsonNode? playerConfigNode)
+    {
+        if (playerConfigNode == null)
+        {
+            return null;
+        }
+
+        try
+        {
+            var playerConfigObj = playerConfigNode.AsObject();
+            var playerConfig = new PlayerConfig
+            {
+                AudioLoudnessDb = playerConfigObj["audioConfig"]?["loudnessDb"]?.GetValue<double>() ?? 0,
+                AudioPerceptualLoudnessDb = playerConfigObj["audioConfig"]?["perceptualLoudnessDb"]?.GetValue<double>() ?? 0,
+                AudioEnablePerFormatLoudness = playerConfigObj["audioConfig"]?["enablePerFormatLoudness"]?.GetValue<bool>() ?? false,
+                MaxBitrate = uint.TryParse(playerConfigObj["streamSelectionConfig"]?["maxBitrate"]?.GetValue<string>(), out var parsedMaxBitrate) ? parsedMaxBitrate : 0,
+                MaxReadAheadMediaTimeMs = playerConfigObj["mediaCommonConfig"]?["dynamicReadaheadConfig"]?["maxReadAheadMediaTimeMs"]?.GetValue<uint>() ?? 0,
+                MinReadAheadMediaTimeMs = playerConfigObj["mediaCommonConfig"]?["dynamicReadaheadConfig"]?["minReadAheadMediaTimeMs"]?.GetValue<uint>() ?? 0,
+                ReadAheadGrowthRateMs = playerConfigObj["mediaCommonConfig"]?["dynamicReadaheadConfig"]?["readAheadGrowthRateMs"]?.GetValue<uint>() ?? 0,
+            };
+            return playerConfig;
+        }
+        catch (Exception e)
+        {
+            _logger.Error(e, "Failed to extract player config from JSON.");
+            return null;
+        }
+    }
+}

Manager.YouTube/YouTubeClient.cs

@@ -3,7 +3,9 @@ using System.Net.Mime;
 using System.Text;
 using System.Text.Json;
 using System.Text.Json.Nodes;
+using DotBased.Logging;
 using DotBased.Monads;
+using Manager.YouTube.Models;
 using Manager.YouTube.Models.Innertube;
 using Manager.YouTube.Parsers;
 using Manager.YouTube.Parsers.Json;
@@ -13,20 +15,23 @@ namespace Manager.YouTube;
 public sealed class YouTubeClient : IDisposable
 {
     public string Id { get; private set; } = "";
-    public string? UserAgent { get; set; }
+    public string UserAgent { get; private set; }
-    public bool IsAnonymous { get; }
+    public bool IsAnonymous { get; private set; }
     public CookieContainer CookieContainer { get; } = new() { PerDomainCapacity = 50 };
     public ClientState? State { get; private set; }
     public List<string> DatasyncIds { get; } = [];
     public Cookie? SapisidCookie => CookieContainer.GetAllCookies()["SAPISID"];
     public HttpClient HttpClient { get; }
     
-    private YouTubeClient(CookieCollection? cookies, string userAgent)
+    private readonly ILogger _logger;
+    
+    private YouTubeClient(CookieCollection? cookies, string userAgent, ILogger logger)
     {
         if (string.IsNullOrWhiteSpace(userAgent))
         {
             throw new ArgumentNullException(nameof(userAgent));
         }
+        _logger = logger;
         UserAgent = userAgent;
         if (cookies == null || cookies.Count == 0)
         {
@@ -46,10 +51,13 @@ public sealed class YouTubeClient : IDisposable
     /// </summary>
     /// <param name="cookies">The cookies to use for making requests. Empty collection or null for anonymous requests.</param>
     /// <param name="userAgent">The user agent to use for the requests. Only WEB client is supported.</param>
+    /// <param name="logger">The logger that the client is going to use, null will create a new logger.</param>
     /// <returns></returns>
-    public static async Task<Result<YouTubeClient>> CreateAsync(CookieCollection? cookies, string userAgent)
+    public static async Task<Result<YouTubeClient>> CreateAsync(CookieCollection? cookies, string userAgent, ILogger? logger = null)
     {
-        var client = new YouTubeClient(cookies, userAgent);
+        logger ??= LogService.RegisterLogger<YouTubeClient>();
+        
+        var client = new YouTubeClient(cookies, userAgent, logger);
         var clientInitializeResult = await client.FetchClientDataAsync();
         if (!clientInitializeResult.IsSuccess)
         {
@@ -59,96 +67,55 @@ public sealed class YouTubeClient : IDisposable
         return client;
     }
 
-    private HttpClientHandler GetHttpClientHandler()
+    public void SetUserAgent(string userAgent)
     {
-        var clientHandler = new HttpClientHandler
+        if (string.IsNullOrWhiteSpace(userAgent))
         {
-            AutomaticDecompression = DecompressionMethods.Deflate | DecompressionMethods.GZip,
+            _logger.Warning("UserAgent cannot be null or empty!");
-            UseCookies = true,
+            return;
-            CookieContainer = CookieContainer
+        }
-        };
+        UserAgent = userAgent;
-        return clientHandler;
     }
 
-    internal async Task<Result> FetchClientDataAsync()
+    public async Task<Result<YouTubeVideo>> GetVideoByIdAsync(string videoId, CancellationToken cancellationToken = default)
     {
-        if (State is not { LoggedIn: true })
+        if (string.IsNullOrWhiteSpace(videoId))
         {
-            var state = await GetClientStateAsync();
+            return ResultError.Fail("Video id is empty!");
-            if (!state.IsSuccess)
-            {
-                return state;
-            }
         }
 
-        if (string.IsNullOrWhiteSpace(State?.WebPlayerContextConfig?.WebPlayerContext?.DatasyncId))
+        var request = new HttpRequestMessage(HttpMethod.Get, new Uri($"{NetworkService.Origin}/watch?v={videoId}"));
-        {
-            var datasyncResult = await GetDatasyncIds();
-            if (!datasyncResult.IsSuccess)
-            {
-                return datasyncResult;
-            }
-
-            foreach (var id in datasyncResult.Value)
-            {
-                if (DatasyncIds.Contains(id))
-                    continue;
-                DatasyncIds.Add(id);
-            }
-        }
-
-        if (string.IsNullOrWhiteSpace(Id))
-        {
-            var accountInfoResult = await GetCurrentAccountIdAsync();
-            if (!accountInfoResult.IsSuccess)
-            {
-                return accountInfoResult;
-            }
-
-            Id = accountInfoResult.Value;
-        }
-
-        return Result.Success();
-    }
-    
-    private async Task<Result> GetClientStateAsync()
-    {
-        var httpRequest = new HttpRequestMessage
-        {
-            Method = HttpMethod.Get,
-            RequestUri = new Uri(NetworkService.Origin)
-        };
         
-        var result = await NetworkService.MakeRequestAsync(httpRequest, this, true);
+        var videoResponse = await NetworkService.MakeRequestAsync(request, this, true, cancellationToken);
-        if (!result.IsSuccess)
+        if (!videoResponse.IsSuccess && !string.IsNullOrWhiteSpace(videoResponse.Value))
         {
-            return result.Error ?? ResultError.Fail("Request failed!");
+            return videoResponse.Error ?? ResultError.Fail("Request failed!");
         }
 
-        var clientStateResult = HtmlParser.GetStateJson(result.Value);
+        var html = videoResponse.Value;
-        if (clientStateResult is { IsSuccess: false, Error: not null })
-        {
-            return clientStateResult.Error;
-        }
-
-        try
-        {
-            State = JsonSerializer.Deserialize<ClientState>(clientStateResult.Value.Item1);
-        }
-        catch (Exception e)
-        {
-            return ResultError.Error(e, "Error while parsing JSON!");
-        }
-
-
-        if (State == null)
-        {
-            return ResultError.Fail("Unable to parse client state!");
-        }
-
-        State.IsPremiumUser = clientStateResult.Value.Item2;
         
-        return Result.Success();
+        var stateResult = GetClientStateFromHtml(html);
+        var state = stateResult.Value;
+        if (!stateResult.IsSuccess && State != null)
+        {
+            state = State;
+        }
+        
+        var htmlParseResult = HtmlParser.GetVideoDataFromHtml(html);
+        if (!htmlParseResult.IsSuccess)
+        {
+            return htmlParseResult.Error ?? ResultError.Fail("Failed to parse HTML video data!");
+        }
+        
+        var videoParseResult = VideoJsonParser.ParseVideoData(htmlParseResult.Value);
+        if (!videoParseResult.IsSuccess)
+        {
+            return videoParseResult;
+        }
+        
+        //await DecipherSignaturesAsync(videoParseResult.Value, state);
+
+        return videoParseResult.Value;
     }
     
     public async Task<Result<InnertubeChannel>> GetChannelByIdAsync(string channelId)
@@ -231,11 +198,137 @@ public sealed class YouTubeClient : IDisposable
         var rotateRequest = new HttpRequestMessage(HttpMethod.Post, new Uri("https://accounts.youtube.com/RotateCookies"));
         return await NetworkService.MakeRequestAsync(rotateRequest, this, true);
     }
-
+    
     public void Dispose()
     {
         HttpClient.Dispose();
     }
+
+    private async Task<Result> FetchClientDataAsync()
+    {
+        if (State is not { LoggedIn: true })
+        {
+            var stateResult = await GetClientStateAsync();
+            if (!stateResult.IsSuccess)
+            {
+                return stateResult;
+            }
+        }
+
+        if (string.IsNullOrWhiteSpace(State?.WebPlayerContextConfig?.WebPlayerContext?.DatasyncId))
+        {
+            var datasyncResult = await GetDatasyncIdsAsync();
+            if (!datasyncResult.IsSuccess)
+            {
+                return datasyncResult;
+            }
+
+            foreach (var id in datasyncResult.Value)
+            {
+                if (DatasyncIds.Contains(id))
+                    continue;
+                DatasyncIds.Add(id);
+            }
+        }
+
+        if (string.IsNullOrWhiteSpace(Id))
+        {
+            var accountInfoResult = await GetCurrentAccountIdAsync();
+            if (!accountInfoResult.IsSuccess)
+            {
+                return accountInfoResult;
+            }
+
+            Id = accountInfoResult.Value;
+        }
+
+        return Result.Success();
+    }
+    
+    private HttpClientHandler GetHttpClientHandler()
+    {
+        var clientHandler = new HttpClientHandler
+        {
+            AutomaticDecompression = DecompressionMethods.Deflate | DecompressionMethods.GZip,
+            UseCookies = true,
+            CookieContainer = CookieContainer
+        };
+        return clientHandler;
+    }
+    
+    private async Task<Result> GetClientStateAsync()
+    {
+        var httpRequest = new HttpRequestMessage
+        {
+            Method = HttpMethod.Get,
+            RequestUri = new Uri(NetworkService.Origin)
+        };
+        
+        var result = await NetworkService.MakeRequestAsync(httpRequest, this, true);
+        if (!result.IsSuccess)
+        {
+            return result.Error ?? ResultError.Fail("Request failed!");
+        }
+
+        var stateResult = SetClientStateFromHtml(result.Value);
+        if (!stateResult.IsSuccess)
+        {
+            return stateResult;
+        }
+
+        if (State is { LoggedIn: false })
+        {
+            _logger.Warning("Client is not logged in!");
+            return ResultError.Fail("Client login failed!");
+        }
+
+        var cookieRotationResult = await RotateCookiesPageAsync();
+        return !cookieRotationResult.IsSuccess ? cookieRotationResult : Result.Success();
+    }
+
+    private Result SetClientStateFromHtml(string html)
+    {
+        if (string.IsNullOrWhiteSpace(html))
+        {
+            return ResultError.Fail("HTML is empty!!");
+        }
+
+        var clientStateResult = GetClientStateFromHtml(html);
+        if (clientStateResult is { IsSuccess: false, Error: not null })
+        {
+            return clientStateResult.Error;
+        }
+        
+        State = clientStateResult.Value;
+        IsAnonymous = !State.LoggedIn;
+        
+        return Result.Success();
+    }
+
+    private Result<ClientState> GetClientStateFromHtml(string html)
+    {
+        var clientStateResult = HtmlParser.GetStateJson(html);
+        if (clientStateResult is { IsSuccess: false, Error: not null })
+        {
+            return clientStateResult.Error;
+        }
+        
+        ClientState? state;
+        try
+        {
+            state = JsonSerializer.Deserialize<ClientState>(clientStateResult.Value.Item1);
+            if (state != null)
+            {
+                state.IsPremiumUser = clientStateResult.Value.Item2;
+            }
+        }
+        catch (Exception e)
+        {
+            return ResultError.Error(e, "Error while parsing JSON!");
+        }
+        
+        return state == null ? ResultError.Fail("Unable to parse client state!") : state;
+    }
     
     private async Task<Result<string>> GetCurrentAccountIdAsync()
     {
@@ -262,7 +355,7 @@ public sealed class YouTubeClient : IDisposable
         return JsonAccountParser.ParseAccountId(responseResult.Value);
     }
     
-    private async Task<Result<string[]>> GetDatasyncIds()
+    private async Task<Result<string[]>> GetDatasyncIdsAsync()
     {
         if (State is not { LoggedIn: true } || CookieContainer.Count == 0)
         {
@@ -291,4 +384,49 @@ public sealed class YouTubeClient : IDisposable
 
         return ResultError.Fail("Failed to get datasyncIds! Client not logged in.");
     }
+
+    /*private async Task DecipherSignaturesAsync(YouTubeVideo video, ClientState state)
+    {
+        var streamingData = video.StreamingData;
+        if (streamingData == null)
+        {
+            _logger.Debug("No streaming data available, skipping decipher.");
+            return;
+        }
+        
+        if (string.IsNullOrWhiteSpace(state.PlayerJsUrl))
+        {
+            _logger.Warning("No player js url found.");
+        }
+
+        var formatsWithCipher = streamingData.Formats.Concat(streamingData.AdaptiveFormats).Where(x => !string.IsNullOrWhiteSpace(x.SignatureCipher)).ToList();
+        if (formatsWithCipher.Count == 0)
+        {
+            _logger.Debug("Skipping signature decipher, no signatures found to decipher.");
+        }
+
+        if (string.IsNullOrWhiteSpace(streamingData.ServerAbrStreamingUrl))
+        {
+            _logger.Warning("No ABR streaming url available.");
+        }
+
+        var abrStreamUri = new Uri(streamingData.ServerAbrStreamingUrl);
+        var queries = HttpUtility.ParseQueryString(abrStreamUri.Query);
+        var nSig = queries.Get("n");
+
+        if (string.IsNullOrWhiteSpace(nSig))
+        {
+            _logger.Warning("No N signature found.");
+        }
+        
+        /*var jsEngineResult = await JavaScriptEngineManager.GetPlayerEngine(state.PlayerJsUrl ?? "");
+        if (!jsEngineResult.IsSuccess)
+        {
+            _logger.Warning(jsEngineResult.Error?.Description ?? "Failed to get player script engine.");
+            return;
+        }
+
+        var engine = jsEngineResult.Value;
+        engine.InitializePlayer();#1#
+    }*/
 }

Manager.YouTube/YouTubeClientCollection.cs

@@ -8,4 +8,17 @@ public class YouTubeClientCollection : KeyedCollection<string, YouTubeClient>
     {
         return item.Id;
     }
+
+    public new void Add(YouTubeClient client)
+    {
+        if (Items.Contains(client))
+        {
+            var index = Items.IndexOf(client);
+            Items[index] = client;
+        }
+        else
+        {
+            Items.Add(client);
+        }
+    }
 }