Add InterstitialGroups service and enhance SlotWriter and related components for interstitial handling

Introduced the InterstitialGroups service to manage interstitial group logic, preventing their inclusion in slots and fallback groups. Updated the SlotWriter class to utilize this service, ensuring proper validation during slot creation and updates. Enhanced error handling for interstitial groups in the ImportGridCommandHandler and UpdateTemplateCommandHandler, providing warnings instead of failures when interstitials are detected. Updated related tests to verify the correct behavior of these changes, ensuring robust handling of interstitials in the scheduling process.

backend/tests/TeleWave.Application.Tests/Programming/TemplateEditingTests.cs

@@ -87,7 +87,7 @@ public class TemplateEditingTests
     private static async Task<Guid> AddSlotAsync(Fixture f, SlotInput input)
     {
         await using var db = f.Db.New();
-        var created = await new CreateSlotCommandHandler(new SlotWriter(db)).Handle(
+        var created = await new CreateSlotCommandHandler(GroupServices.Slots(db)).Handle(
             new CreateSlotCommand(f.LayerId, input),
             CancellationToken.None
         );
@@ -116,7 +116,7 @@ public class TemplateEditingTests
         var f = await SeedAsync();
         await using var db = f.Db.New();
 
-        var result = await new CreateSlotCommandHandler(new SlotWriter(db)).Handle(
+        var result = await new CreateSlotCommandHandler(GroupServices.Slots(db)).Handle(
             new CreateSlotCommand(Guid.NewGuid(), Input(groupId: f.GroupId)),
             CancellationToken.None
         );
@@ -151,7 +151,7 @@ public class TemplateEditingTests
         var f = await SeedAsync();
         await using var db = f.Db.New();
 
-        var result = await new CreateSlotCommandHandler(new SlotWriter(db)).Handle(
+        var result = await new CreateSlotCommandHandler(GroupServices.Slots(db)).Handle(
             new CreateSlotCommand(f.LayerId, Input(groupId: null)),
             CancellationToken.None
         );
@@ -165,7 +165,7 @@ public class TemplateEditingTests
         var f = await SeedAsync();
         await using var db = f.Db.New();
 
-        var result = await new CreateSlotCommandHandler(new SlotWriter(db)).Handle(
+        var result = await new CreateSlotCommandHandler(GroupServices.Slots(db)).Handle(
             new CreateSlotCommand(f.LayerId, Input(groupId: Guid.NewGuid())),
             CancellationToken.None
         );
@@ -179,7 +179,7 @@ public class TemplateEditingTests
         var f = await SeedAsync();
         await using var db = f.Db.New();
 
-        var result = await new CreateSlotCommandHandler(new SlotWriter(db)).Handle(
+        var result = await new CreateSlotCommandHandler(GroupServices.Slots(db)).Handle(
             new CreateSlotCommand(f.LayerId, Input(kind: SlotKind.Repeat)),
             CancellationToken.None
         );
@@ -211,7 +211,7 @@ public class TemplateEditingTests
         await AddSlotAsync(f, Input(groupId: f.GroupId));
 
         await using var db = f.Db.New();
-        var result = await new CreateSlotCommandHandler(new SlotWriter(db)).Handle(
+        var result = await new CreateSlotCommandHandler(GroupServices.Slots(db)).Handle(
             new CreateSlotCommand(
                 f.LayerId,
                 Input(title: "Второй", start: new TimeOnly(21, 0), groupId: f.GroupId)
@@ -228,7 +228,7 @@ public class TemplateEditingTests
         var f = await SeedAsync();
         await using var db = f.Db.New();
 
-        var result = await new UpdateSlotCommandHandler(new SlotWriter(db)).Handle(
+        var result = await new UpdateSlotCommandHandler(GroupServices.Slots(db)).Handle(
             new UpdateSlotCommand(Guid.NewGuid(), Input(groupId: f.GroupId)),
             CancellationToken.None
         );
@@ -245,7 +245,7 @@ public class TemplateEditingTests
         await using (var db = f.Db.New())
         {
             // Сдвиг внутрь собственного интервала: слот не должен пересечься сам с собой.
-            var result = await new UpdateSlotCommandHandler(new SlotWriter(db)).Handle(
+            var result = await new UpdateSlotCommandHandler(GroupServices.Slots(db)).Handle(
                 new UpdateSlotCommand(
                     slotId,
                     Input(title: "Ночное кино", start: new TimeOnly(21, 0), groupId: f.GroupId)
@@ -270,7 +270,7 @@ public class TemplateEditingTests
 
         await using (var db = f.Db.New())
         {
-            var missing = await new DeleteSlotCommandHandler(new SlotWriter(db)).Handle(
+            var missing = await new DeleteSlotCommandHandler(GroupServices.Slots(db)).Handle(
                 new DeleteSlotCommand(Guid.NewGuid()),
                 CancellationToken.None
             );
@@ -279,7 +279,7 @@ public class TemplateEditingTests
 
         await using (var db = f.Db.New())
         {
-            var deleted = await new DeleteSlotCommandHandler(new SlotWriter(db)).Handle(
+            var deleted = await new DeleteSlotCommandHandler(GroupServices.Slots(db)).Handle(
                 new DeleteSlotCommand(slotId),
                 CancellationToken.None
             );
@@ -407,7 +407,10 @@ public class TemplateEditingTests
         var f = await SeedAsync();
         await using var db = f.Db.New();
 
-        var result = await new UpdateTemplateCommandHandler(db).Handle(
+        var result = await new UpdateTemplateCommandHandler(
+            db,
+            GroupServices.Interstitials(db)
+        ).Handle(
             new UpdateTemplateCommand(Guid.NewGuid(), "Сетка", null, null, null),
             CancellationToken.None
         );
@@ -421,7 +424,10 @@ public class TemplateEditingTests
         var f = await SeedAsync();
         await using var db = f.Db.New();
 
-        var result = await new UpdateTemplateCommandHandler(db).Handle(
+        var result = await new UpdateTemplateCommandHandler(
+            db,
+            GroupServices.Interstitials(db)
+        ).Handle(
             new UpdateTemplateCommand(f.TemplateId, "Сетка", Guid.NewGuid(), null, null),
             CancellationToken.None
         );
@@ -447,7 +453,10 @@ public class TemplateEditingTests
 
         await using (var db = f.Db.New())
         {
-            var result = await new UpdateTemplateCommandHandler(db).Handle(
+            var result = await new UpdateTemplateCommandHandler(
+                db,
+                GroupServices.Interstitials(db)
+            ).Handle(
                 new UpdateTemplateCommand(f.TemplateId, "  Новая сетка  ", f.GroupId, null, rules),
                 CancellationToken.None
             );