feat: add campaign templates and recurring schedules

src/GmRelay.Bot/Features/Sessions/CreateSession/CreateSessionHandler.cs

@@ -42,11 +42,19 @@ public sealed class CreateSessionHandler(
                 cancellationToken: cancellationToken);
         }
 
+        foreach (var recurringInput in parseResult.InvalidRecurringInputs)
+        {
+            await botClient.SendMessage(
+                message.Chat.Id,
+                $"⚠️ Предупреждение: некорректный повтор расписания '{recurringInput}'. Укажите число игр 1-52 и шаг 1-365 дней.",
+                cancellationToken: cancellationToken);
+        }
+
         if (!parseResult.IsValid)
         {
             await botClient.SendMessage(
                 chatId: message.Chat.Id,
-                text: "❌ Не удалось распознать формат. Пожалуйста, используйте шаблон:\n\n/newsession\nНазвание: My Game\nВремя: 15.05.2026 19:30\nВремя: 22.05.2026 19:30\nМест: 4\nСсылка: https://link",
+                text: "❌ Не удалось распознать формат. Пожалуйста, используйте шаблон:\n\n/newsession\nНазвание: My Game\nВремя: 15.05.2026 19:30\nВремя: 22.05.2026 19:30\nМест: 4\nСсылка: https://link\n\nДля повтора можно указать одну дату и строки:\nИгр: 4\nИнтервал: 7",
                 cancellationToken: cancellationToken);
             return;
         }

src/GmRelay.Bot/Features/Sessions/CreateSession/NewSessionCommandParser.cs

@@ -9,17 +9,21 @@ internal sealed record NewSessionParseResult(
     IReadOnlyList<DateTimeOffset> ScheduledTimes,
     IReadOnlyList<string> PastTimeInputs,
     IReadOnlyList<string> InvalidTimeInputs,
-    IReadOnlyList<string> InvalidSeatLimitInputs)
+    IReadOnlyList<string> InvalidSeatLimitInputs,
+    IReadOnlyList<string> InvalidRecurringInputs)
 {
     public bool IsValid =>
         !string.IsNullOrWhiteSpace(Title) &&
         !string.IsNullOrWhiteSpace(Link) &&
         ScheduledTimes.Count > 0 &&
-        InvalidSeatLimitInputs.Count == 0;
+        InvalidSeatLimitInputs.Count == 0 &&
+        InvalidRecurringInputs.Count == 0;
 }
 
 internal static class NewSessionCommandParser
 {
+    private const int MaxRecurringSessionCount = 52;
+    private const int MaxRecurringIntervalDays = 365;
     private const string TitlePrefix = "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435:";
     private const string TimePrefix = "\u0412\u0440\u0435\u043c\u044f:";
     private const string LinkPrefix = "\u0421\u0441\u044b\u043b\u043a\u0430:";
@@ -29,16 +33,30 @@ internal static class NewSessionCommandParser
         "\u041b\u0438\u043c\u0438\u0442:",
         "\u041c\u0430\u043a\u0441\u0438\u043c\u0443\u043c:"
     ];
+    private static readonly string[] RecurringCountPrefixes =
+    [
+        "\u0418\u0433\u0440:",
+        "\u0421\u0435\u0441\u0441\u0438\u0439:",
+        "\u041f\u043e\u0432\u0442\u043e\u0440\u043e\u0432:"
+    ];
+    private static readonly string[] RecurringIntervalPrefixes =
+    [
+        "\u0428\u0430\u0433:",
+        "\u0418\u043d\u0442\u0435\u0440\u0432\u0430\u043b:"
+    ];
 
     public static NewSessionParseResult Parse(string? text, DateTimeOffset nowUtc)
     {
         string? title = null;
         string? link = null;
         int? maxPlayers = null;
+        int? recurringCount = null;
+        var recurringIntervalDays = 7;
         var scheduledTimes = new List<DateTimeOffset>();
         var pastTimeInputs = new List<string>();
         var invalidTimeInputs = new List<string>();
         var invalidSeatLimitInputs = new List<string>();
+        var invalidRecurringInputs = new List<string>();
 
         foreach (var line in (text ?? string.Empty).Split('\n', StringSplitOptions.TrimEntries))
         {
@@ -71,6 +89,42 @@ internal static class NewSessionCommandParser
                 continue;
             }
 
+            var recurringCountPrefix = RecurringCountPrefixes.FirstOrDefault(prefix =>
+                line.StartsWith(prefix, StringComparison.OrdinalIgnoreCase));
+            if (recurringCountPrefix is not null)
+            {
+                var recurringInput = line[recurringCountPrefix.Length..].Trim();
+                if (int.TryParse(recurringInput, out var parsedCount) &&
+                    parsedCount is >= 1 and <= MaxRecurringSessionCount)
+                {
+                    recurringCount = parsedCount;
+                }
+                else
+                {
+                    invalidRecurringInputs.Add(recurringInput);
+                }
+
+                continue;
+            }
+
+            var recurringIntervalPrefix = RecurringIntervalPrefixes.FirstOrDefault(prefix =>
+                line.StartsWith(prefix, StringComparison.OrdinalIgnoreCase));
+            if (recurringIntervalPrefix is not null)
+            {
+                var recurringInput = line[recurringIntervalPrefix.Length..].Trim();
+                if (int.TryParse(recurringInput, out var parsedInterval) &&
+                    parsedInterval is >= 1 and <= MaxRecurringIntervalDays)
+                {
+                    recurringIntervalDays = parsedInterval;
+                }
+                else
+                {
+                    invalidRecurringInputs.Add(recurringInput);
+                }
+
+                continue;
+            }
+
             if (!line.StartsWith(TimePrefix, StringComparison.OrdinalIgnoreCase))
             {
                 continue;
@@ -92,6 +146,14 @@ internal static class NewSessionCommandParser
             scheduledTimes.Add(scheduledAt);
         }
 
+        if (recurringCount.HasValue && scheduledTimes.Count == 1)
+        {
+            var firstScheduledTime = scheduledTimes[0];
+            scheduledTimes = Enumerable.Range(0, recurringCount.Value)
+                .Select(index => firstScheduledTime.AddDays(recurringIntervalDays * index))
+                .ToList();
+        }
+
         return new NewSessionParseResult(
             title,
             link,
@@ -99,6 +161,7 @@ internal static class NewSessionCommandParser
             scheduledTimes,
             pastTimeInputs,
             invalidTimeInputs,
-            invalidSeatLimitInputs);
+            invalidSeatLimitInputs,
+            invalidRecurringInputs);
     }
 }