feat: add session capacity waitlist

src/GmRelay.Shared/Rendering/SessionBatchRenderer.cs

@@ -3,8 +3,8 @@ using Telegram.Bot.Types.ReplyMarkups;
 
 namespace GmRelay.Shared.Rendering;
 
-public sealed record SessionBatchDto(Guid SessionId, DateTime ScheduledAt, string Status);
-public sealed record ParticipantBatchDto(Guid SessionId, string DisplayName, string? TelegramUsername);
+public sealed record SessionBatchDto(Guid SessionId, DateTime ScheduledAt, string Status, int? MaxPlayers);
+public sealed record ParticipantBatchDto(Guid SessionId, string DisplayName, string? TelegramUsername, string RegistrationStatus);
 
 public static class SessionBatchRenderer
 {
@@ -22,10 +22,17 @@ public static class SessionBatchRenderer
 
         foreach (var session in activeSessions)
         {
-            var sessionPlayers = participants.Where(p => p.SessionId == session.SessionId).ToList();
+            var sessionPlayers = participants
+                .Where(p => p.SessionId == session.SessionId && p.RegistrationStatus == ParticipantRegistrationStatus.Active)
+                .ToList();
+            var waitlistedPlayers = participants
+                .Where(p => p.SessionId == session.SessionId && p.RegistrationStatus == ParticipantRegistrationStatus.Waitlisted)
+                .ToList();
             
             messageText += $"📅 <b>{session.ScheduledAt.FormatMoscow()}</b>\n";
-            messageText += $"👥 Игроки ({sessionPlayers.Count}):\n";
+            messageText += session.MaxPlayers.HasValue
+                ? $"👥 Места: {sessionPlayers.Count}/{session.MaxPlayers.Value}\n"
+                : $"👥 Игроки ({sessionPlayers.Count}):\n";
             
             if (sessionPlayers.Count > 0)
             {
@@ -36,6 +43,12 @@ public static class SessionBatchRenderer
                 messageText += "  <i>Пока никто не записался</i>\n";
             }
 
+            if (waitlistedPlayers.Count > 0)
+            {
+                messageText += $"⏳ Лист ожидания ({waitlistedPlayers.Count}):\n";
+                messageText += string.Join("\n", waitlistedPlayers.Select(p => $"  ⏱ {(p.TelegramUsername != null ? "@" + p.TelegramUsername : p.DisplayName)}")) + "\n";
+            }
+
             if (SessionStatus.IsCancelled(session.Status))
             {
                 messageText += "❌ <i>Сессия отменена</i>\n\n";
@@ -46,13 +59,27 @@ public static class SessionBatchRenderer
                 var dateTitle = session.ScheduledAt.FormatMoscowShort();
                 buttons.Add(new[]
                 {
-                    InlineKeyboardButton.WithCallbackData($"✋ На {dateTitle}", $"join_session:{session.SessionId}"),
+                    InlineKeyboardButton.WithCallbackData(GetJoinButtonText(session, sessionPlayers.Count, dateTitle), $"join_session:{session.SessionId}"),
                     InlineKeyboardButton.WithCallbackData($"❌ Отменить {dateTitle} (ГМ)", $"cancel_session:{session.SessionId}"),
                     InlineKeyboardButton.WithCallbackData($"⏰ (ГМ)", $"reschedule_session:{session.SessionId}")
-                });
+                }
+                .Concat(SessionCapacityRules.CanPromoteWaitlistedPlayer(session.MaxPlayers, sessionPlayers.Count, waitlistedPlayers.Count)
+                    ? [InlineKeyboardButton.WithCallbackData($"⬆️ Из ожидания {dateTitle} (ГМ)", $"promote_waitlist:{session.SessionId}")]
+                    : [])
+                .ToArray());
             }
         }
 
         return (messageText, new InlineKeyboardMarkup(buttons));
     }
+
+    private static string GetJoinButtonText(SessionBatchDto session, int activePlayers, string dateTitle)
+    {
+        if (session.MaxPlayers.HasValue && activePlayers >= session.MaxPlayers.Value)
+        {
+            return $"⏳ В лист ожидания {dateTitle}";
+        }
+
+        return $"✋ На {dateTitle}";
+    }
 }