Implement BumperEndpoints and remove deprecated bumper-related functionality

Added new BumperEndpoints to the API for managing bumper templates and variants, enhancing the channel management capabilities. Removed outdated bumper-related commands and handlers from the application, streamlining the codebase and improving maintainability. Updated ChannelEndpoints to reflect these changes and ensure proper routing for the new endpoints.

backend/tests/TeleWave.Application.Tests/Validators/ValidatorTests.cs

@@ -11,44 +11,57 @@ namespace TeleWave.Application.Tests.Validators;
 public class ValidatorTests
 {
     [Fact]
-    public void UpdateBumperTextVariant_ChecksLengthsAndWeight()
+    public void UpdateBumperVariant_ChecksNameWeightAndLines()
     {
-        var v = new UpdateBumperTextVariantCommandValidator();
+        var v = new UpdateBumperVariantCommandValidator();
 
-        var good = new UpdateBumperTextVariantCommand(
+        var good = new UpdateBumperVariantCommand(
             Guid.NewGuid(),
             Guid.NewGuid(),
-            Guid.NewGuid(),
-            "Name",
-            BumperTextKind.NowNext,
-            "NOW",
-            "NEXT",
-            "l1",
-            "l2",
-            BumperTrigger.Both,
-            3
+            new BumperVariantInput(
+                "Name",
+                BumperTrigger.Both,
+                BumperBackground.NextPoster,
+                3,
+                [new BumperLineDto(BumperLineStyle.Title, BumperLineColor.Text, "{next.title}")]
+            )
         );
         Assert.True(v.Validate(good).IsValid);
 
-        Assert.False(v.Validate(good with { Name = "" }).IsValid);
-        Assert.False(v.Validate(good with { Weight = -1 }).IsValid);
-        Assert.False(v.Validate(good with { Line1 = new string('x', 121) }).IsValid);
+        Assert.False(v.Validate(Patch(good, input => input with { Name = "" })).IsValid);
+        Assert.False(v.Validate(Patch(good, input => input with { Weight = -1 })).IsValid);
+        Assert.False(
+            v.Validate(
+                Patch(
+                    good,
+                    input =>
+                        input with
+                        {
+                            Lines =
+                            [
+                                new BumperLineDto(
+                                    BumperLineStyle.Title,
+                                    BumperLineColor.Text,
+                                    new string('x', 121)
+                                ),
+                            ],
+                        }
+                )
+            ).IsValid
+        );
     }
 
+    private static UpdateBumperVariantCommand Patch(
+        UpdateBumperVariantCommand command,
+        Func<BumperVariantInput, BumperVariantInput> change
+    ) => command with { Input = change(command.Input) };
+
     [Fact]
     public void UpdateChannelSettings_ChecksRanges()
     {
         var v = new UpdateChannelSettingsCommandValidator();
-        var bumper = new BumperSettingsInput(BumperFont.Sans, BumperSelection.WeightedRandom);
 
-        var good = new UpdateChannelSettingsCommand(
-            Guid.NewGuid(),
-            "Name",
-            true,
-            true,
-            bumper,
-            null
-        );
+        var good = new UpdateChannelSettingsCommand(Guid.NewGuid(), "Name", true, null);
         Assert.True(v.Validate(good).IsValid);
 
         Assert.False(v.Validate(good with { Name = "" }).IsValid);