Add dynamic background images for servers

Moonlight/App/Database/Entities/Image.cs

@@ -20,4 +20,5 @@ public class Image
     public List<DockerImage> DockerImages { get; set; } = new();
     public List<ImageVariable> Variables { get; set; } = new();
     public string TagsJson { get; set; } = "";
+    public string BackgroundImageUrl { get; set; } = "";
 }

Moonlight/App/Database/Migrations/20230609202138_AddBackgroundImageUrlImage.cs

@@ -0,0 +1,29 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Moonlight.App.Database.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddBackgroundImageUrlImage : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "BackgroundImageUrl",
+                table: "Images",
+                type: "longtext",
+                nullable: false)
+                .Annotation("MySql:CharSet", "utf8mb4");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "BackgroundImageUrl",
+                table: "Images");
+        }
+    }
+}

Moonlight/App/Database/Migrations/DataContextModelSnapshot.cs

@@ -132,6 +132,10 @@ namespace Moonlight.App.Database.Migrations
                     b.Property<int>("Allocations")
                         .HasColumnType("int");
 
+                    b.Property<string>("BackgroundImageUrl")
+                        .IsRequired()
+                        .HasColumnType("longtext");
+
                     b.Property<string>("ConfigFiles")
                         .IsRequired()
                         .HasColumnType("longtext");

Moonlight/App/Http/Controllers/Api/Moonlight/ResourcesController.cs

@@ -47,6 +47,29 @@ public class ResourcesController : Controller
         return NotFound();
     }
     
+    [HttpGet("background/{name}")]
+    public async Task<ActionResult> GetBackground([FromRoute] string name)
+    {
+        if (name.Contains(".."))
+        {
+            await SecurityLogService.Log(SecurityLogType.PathTransversal, x =>
+            {
+                x.Add<string>(name);
+            });
+            
+            return NotFound();
+        }
+
+        if (System.IO.File.Exists(PathBuilder.File("storage", "resources", "public", "background", name)))
+        {
+            var fs = new FileStream(PathBuilder.File("storage", "resources", "public", "background", name), FileMode.Open);
+        
+            return File(fs, MimeTypes.GetMimeType(name), name);
+        }
+
+        return NotFound();
+    }
+
     [HttpGet("bucket/{bucket}/{name}")]
     public async Task<ActionResult> GetBucket([FromRoute] string bucket, [FromRoute] string name)
     {

Moonlight/App/Services/Files/ResourceService.cs

@@ -16,6 +16,11 @@ public class ResourceService
         return $"{AppUrl}/api/moonlight/resources/images/{name}";
     }
     
+    public string BackgroundImage(string name)
+    {
+        return $"{AppUrl}/api/moonlight/resources/background/{name}";
+    }
+
     public string Avatar(User user)
     {
         return $"{AppUrl}/api/moonlight/avatar/{user.Id}";

Moonlight/App/Services/Sessions/DynamicBackgroundService.cs

@@ -0,0 +1,33 @@
+using Logging.Net;
+using Moonlight.App.Services.Files;
+
+namespace Moonlight.App.Services.Sessions;
+
+public class DynamicBackgroundService
+{
+    public EventHandler OnBackgroundImageChanged { get; set; }
+    public string BackgroundImageUrl { get; private set; }
+    private string DefaultBackgroundImageUrl;
+
+    public DynamicBackgroundService(ResourceService resourceService)
+    {
+        DefaultBackgroundImageUrl = resourceService.BackgroundImage("main.jpg");
+        BackgroundImageUrl = DefaultBackgroundImageUrl;
+    }
+
+    public Task Change(string url)
+    {
+        BackgroundImageUrl = url;
+        OnBackgroundImageChanged?.Invoke(this, null!);
+
+        return Task.CompletedTask;
+    }
+
+    public Task Reset()
+    {
+        BackgroundImageUrl = DefaultBackgroundImageUrl;
+        OnBackgroundImageChanged?.Invoke(this, null!);
+
+        return Task.CompletedTask;
+    }
+}

Moonlight/Moonlight.csproj

@@ -74,6 +74,7 @@
     <Folder Include="App\ApiClients\CloudPanel\Resources\" />
     <Folder Include="App\Http\Middleware" />
     <Folder Include="storage\backups\" />
+    <Folder Include="storage\resources\public\background\" />
   </ItemGroup>
 
 </Project>

Moonlight/Program.cs

@@ -134,6 +134,7 @@ namespace Moonlight
             builder.Services.AddScoped<ReCaptchaService>();
             builder.Services.AddScoped<IpBanService>();
             builder.Services.AddSingleton<OAuth2Service>();
+            builder.Services.AddScoped<DynamicBackgroundService>();
 
             builder.Services.AddScoped<SubscriptionService>();
             builder.Services.AddScoped<SubscriptionAdminService>();

Moonlight/Shared/Layouts/MainLayout.razor

@@ -20,6 +20,7 @@
 @inject ToastService ToastService
 @inject SmartTranslateService SmartTranslateService
 @inject IpBanService IpBanService
+@inject DynamicBackgroundService DynamicBackgroundService
 
 <GlobalErrorBoundary>
     @{
@@ -56,7 +57,7 @@
                     <Sidebar></Sidebar>
                     <div class="app-main flex-column flex-row-fluid" id="kt_app_main">
                         <div class="d-flex flex-column flex-column-fluid">
-                            <div id="kt_app_content" class="app-content flex-column-fluid">
+                            <div id="kt_app_content" class="app-content flex-column-fluid" style="background-position: center; background-size: cover; background-repeat: no-repeat; background-attachment: fixed; background-image: url('@(DynamicBackgroundService.BackgroundImageUrl)')">
                                 <div id="kt_app_content_container" class="app-container container-fluid">
                                     <div class="mt-10">
                                         <SoftErrorBoundary>
@@ -189,6 +190,11 @@
         {
             try
             {
+                DynamicBackgroundService.OnBackgroundImageChanged += async (_, _) =>
+                {
+                    await InvokeAsync(StateHasChanged);
+                };
+                
                 IsIpBanned = await IpBanService.IsBanned();
                 
                 if(IsIpBanned)
@@ -211,7 +217,13 @@
 
                 await SessionService.Register();
 
-                NavigationManager.LocationChanged += (sender, args) => { SessionService.Refresh(); };
+                NavigationManager.LocationChanged += async (_, _) =>
+                {
+                    SessionService.Refresh();
+
+                    if (!NavigationManager.Uri.Contains("/server/"))
+                        await DynamicBackgroundService.Reset();
+                };
 
                 if (User != null)
                 {

Moonlight/Shared/Views/Admin/Servers/Images/Edit.razor

@@ -38,6 +38,16 @@
                     </label>
                     <textarea @bind="Image.Description" type="text" class="form-control"></textarea>
                 </div>
+                <div class="mb-10">
+                    <label class="form-label">
+                        <TL>Background image url</TL>
+                    </label>
+                    <input 
+                        @bind="Image.BackgroundImageUrl"
+                        type="text"
+                        class="form-control"
+                        placeholder="@(SmartTranslateService.Translate("Leave empty for the default background image"))">
+                </div>
             </div>
         </div>
         <div class="col-xl-6 mb-5 mb-xl-10">

Moonlight/Shared/Views/Index.razor

@@ -125,7 +125,8 @@
     </div>
 </div>
 
-<!--d-flex flex-row mb-5-->
+<div class="row">
+    <div class="col">
         <div class="card mb-5">
             <div class="card-header card-header-stretch">
                 <div class="card-title d-flex align-items-center">
@@ -173,14 +174,15 @@
                                 <TL>Create a domain</TL>
                             </a>
                             <span class="text-gray-400 fw-semibold d-block fs-6">
-                        <TL>Make your servvices accessible throught your own domain</TL>
+                                <TL>Make your services accessible through your own domain</TL>
                             </span>
                         </div>
                     </div>
                 </div>
             </div>
         </div>
-
+    </div>
+    <div class="col">
         <div class="card mb-5">
             <div class="card-header card-header-stretch">
                 <div class="card-title d-flex align-items-center">
@@ -235,6 +237,8 @@
                 </div>
             </div>
         </div>
+    </div>
+</div>
 </LazyLoader>
 
 @code

Moonlight/Shared/Views/Server/Index.razor

@@ -10,6 +10,7 @@
 @using Moonlight.App.Helpers.Wings.Enums
 @using Moonlight.App.Repositories
 @using Moonlight.App.Services
+@using Moonlight.App.Services.Sessions
 @using Moonlight.Shared.Components.Xterm
 @using Moonlight.Shared.Components.ServerControl
 @using Newtonsoft.Json
@@ -20,6 +21,7 @@
 @inject EventSystem Event
 @inject ServerService ServerService
 @inject NavigationManager NavigationManager
+@inject DynamicBackgroundService DynamicBackgroundService
 
 @implements IDisposable
 
@@ -291,6 +293,11 @@
 
                     return Task.CompletedTask;
                 });
+
+                if (string.IsNullOrEmpty(Image.BackgroundImageUrl))
+                    await DynamicBackgroundService.Reset();
+                else
+                    await DynamicBackgroundService.Change(Image.BackgroundImageUrl);
             }
         }
         else