upd

PepperBot/Application/Interfaces/ITelegramNotifier.cs

@@ -12,7 +12,7 @@ public interface ITelegramNotifier
     /// <summary>
     /// Уведомление о скидке в конкретный Telegram-чат (личная/персональная рассылка).
     /// </summary>
-    Task NotifyDealToChatAsync(Deal deal, string chatId, CancellationToken cancellationToken);
+    Task NotifyDealToChatAsync(Deal deal, string chatId, string? selectionRule, CancellationToken cancellationToken);
 
     /// <summary>
     /// Запустить обработку входящих сообщений Telegram и регистрацию подписок.

PepperBot/Application/Services/DealService.cs

@@ -85,7 +85,7 @@ public class DealService
                     continue;
                 }
 
-                var isMatch = IsMatch(searchableText, keywords);
+                var isMatch = IsMatch(searchableText, keywords, out var matchedKeyword);
                 Logger.Debug(
                     "Результат фильтрации скидки {DealId} по подписке {SubscriptionId}: {IsMatch}. Текст: \"{Text}\"; ключевые слова: {Keywords}",
                     deal.Id,
@@ -96,7 +96,9 @@ public class DealService
 
                 if (isMatch)
                 {
-                    await _notifier.NotifyDealToChatAsync(deal, subscription.ChatId, cancellationToken);
+                    var selectionRule =
+                        $"совпадение по ключевому слову \"{matchedKeyword}\" (подписка [{subscription.Id}]: {subscription.Keywords})";
+                    await _notifier.NotifyDealToChatAsync(deal, subscription.ChatId, selectionRule, cancellationToken);
                 }
             }
         }
@@ -111,8 +113,9 @@ public class DealService
             .ToList();
     }
 
-    private static bool IsMatch(string text, List<string> keywords)
+    private static bool IsMatch(string text, List<string> keywords, out string matchedKeyword)
     {
+        matchedKeyword = string.Empty;
         if (keywords.Count == 0)
         {
             return false;
@@ -122,6 +125,7 @@ public class DealService
         {
             if (text.Contains(keyword, StringComparison.OrdinalIgnoreCase))
             {
+                matchedKeyword = keyword;
                 return true;
             }
         }

PepperBot/Infrastructure/Telegram/TelegramNotifier.cs

@@ -50,17 +50,17 @@ public class TelegramNotifier : ITelegramNotifier
             return Task.CompletedTask;
         }
 
-        return SendDealAsync(deal, _broadcastChatId, cancellationToken);
+        return SendDealAsync(deal, _broadcastChatId, selectionRule: null, cancellationToken);
     }
 
-    public Task NotifyDealToChatAsync(Deal deal, string chatId, CancellationToken cancellationToken)
+    public Task NotifyDealToChatAsync(Deal deal, string chatId, string? selectionRule, CancellationToken cancellationToken)
     {
         if (string.IsNullOrWhiteSpace(chatId))
         {
             return Task.CompletedTask;
         }
 
-        return SendDealAsync(deal, chatId, cancellationToken);
+        return SendDealAsync(deal, chatId, selectionRule, cancellationToken);
     }
 
     public Task StartAsync(CancellationToken cancellationToken)
@@ -92,10 +92,8 @@ public class TelegramNotifier : ITelegramNotifier
         if (update.Type == UpdateType.CallbackQuery)
         {
             await HandleCallbackQueryAsync(botClient, update.CallbackQuery!, cancellationToken);
-        {
             return;
         }
-        }
 
         if (update.Type != UpdateType.Message)
         {
@@ -256,11 +254,17 @@ public class TelegramNotifier : ITelegramNotifier
         return Task.CompletedTask;
     }
 
-    private async Task SendDealAsync(Deal deal, string chatId, CancellationToken cancellationToken)
+    private async Task SendDealAsync(Deal deal, string chatId, string? selectionRule, CancellationToken cancellationToken)
     {
         var textBuilder = new StringBuilder();
         textBuilder.AppendLine($"🔥 {deal.Title}");
 
+        if (!string.IsNullOrWhiteSpace(selectionRule))
+        {
+            textBuilder.AppendLine($"Правило отбора: {selectionRule}");
+            textBuilder.AppendLine();
+        }
+
         if (deal.CurrentPrice is not null)
         {
             textBuilder.AppendLine($"Цена: {deal.CurrentPrice:0.##} ₽");