Refactor bumper template background management: rename background upload endpoint to reflect new functionality, update related command and handler to use image ID instead of extension, and adjust data models to support image references. Remove obsolete background handling code and enhance UI components for improved image selection and display.

backend/src/TeleWave.Application/Broadcast/Bumpers/ClearBumperTemplateBackgroundCommandHandler.cs

@@ -5,10 +5,8 @@ using TeleWave.Application.Common.Models;
 
 namespace TeleWave.Application.Broadcast.Bumpers;
 
-public sealed class ClearBumperTemplateBackgroundCommandHandler(
-    IAppDbContext dbContext,
-    IBumperTemplateStorage storage
-) : ICommandHandler<ClearBumperTemplateBackgroundCommand, Result>
+public sealed class ClearBumperTemplateBackgroundCommandHandler(IAppDbContext dbContext)
+    : ICommandHandler<ClearBumperTemplateBackgroundCommand, Result>
 {
     public async Task<Result> Handle(
         ClearBumperTemplateBackgroundCommand command,
@@ -25,8 +23,8 @@ public sealed class ClearBumperTemplateBackgroundCommandHandler(
         if (template is null)
             return Result.Failure(ChannelErrors.BumperTemplateNotFound);
 
+        // Отвязываем фон; сама картинка остаётся в галерее.
         template.ClearBackgroundImage();
-        storage.DeleteBackground(command.TemplateId);
         return Result.Success();
     }
 }

backend/src/TeleWave.Application/Broadcast/Bumpers/RenderBumperPreviewQueryHandler.cs

@@ -12,6 +12,7 @@ public sealed class RenderBumperPreviewQueryHandler(
     IAppDbContext dbContext,
     IBumperRenderer renderer,
     IBumperTemplateStorage storage,
+    IImageStore imageStore,
     IOptions<BumperOptions> bumperOptions,
     IOptions<StreamingOptions> streamingOptions
 ) : IQueryHandler<RenderBumperPreviewQuery, Result<Guid>>
@@ -40,6 +41,18 @@ public sealed class RenderBumperPreviewQueryHandler(
 
         var (fromName, toName) = await SampleNamesAsync(channel, cancellationToken);
 
+        // Фон блока — из общего реестра по id.
+        string? backgroundPath = null;
+        if (template.BackgroundImageId is { } bgId)
+        {
+            var bgExt = await dbContext.Images.AsNoTracking()
+                .Where(i => i.Id == bgId)
+                .Select(i => i.FileExtension)
+                .FirstOrDefaultAsync(cancellationToken);
+            if (bgExt is not null)
+                backgroundPath = imageStore.ResolvePath(bgId, bgExt);
+        }
+
         var seconds =
             template.AudioDurationSeconds is { } d and > 0 ? d : DefaultBumperDurationSeconds;
         var aligned = (int)(
@@ -59,7 +72,7 @@ public sealed class RenderBumperPreviewQueryHandler(
             fromName,
             channel.BumperNextLabel,
             toName,
-            storage.BackgroundPath(template.Id, template.BackgroundImageExtension),
+            backgroundPath,
             storage.AudioPath(template.Id, template.AudioExtension),
             // Постер зависит от конкретного «следующего» шоу — в превью не подставляем.
             null

backend/src/TeleWave.Application/Broadcast/Bumpers/SetBumperTemplateBackgroundCommand.cs

@@ -3,9 +3,9 @@ using TeleWave.Application.Common.Models;
 
 namespace TeleWave.Application.Broadcast.Bumpers;
 
-/// <summary>Отметить загруженную фон-картинку блока (расширение — с точкой).</summary>
+/// <summary>Привязать фон-картинку блока по ссылке на изображение из реестра (галерея).</summary>
 public sealed record SetBumperTemplateBackgroundCommand(
     Guid ChannelId,
     Guid TemplateId,
-    string Extension
+    Guid ImageId
 ) : ICommand<Result>;

backend/src/TeleWave.Application/Broadcast/Bumpers/SetBumperTemplateBackgroundCommandHandler.cs

@@ -23,7 +23,7 @@ public sealed class SetBumperTemplateBackgroundCommandHandler(IAppDbContext dbCo
         if (template is null)
             return Result.Failure(ChannelErrors.BumperTemplateNotFound);
 
-        template.SetBackgroundImage(command.Extension);
+        template.SetBackgroundImage(command.ImageId);
         return Result.Success();
     }
 }