GmRelayBot/src/GmRelay.Bot/Infrastructure/Telegram/TelegramSessionBatchRenderer.cs

// NOTE: duplicated in GmRelay.Web/Services/TelegramSessionBatchRenderer.cs
using GmRelay.Shared.Domain;
using GmRelay.Shared.Rendering;
using Telegram.Bot.Types.ReplyMarkups;

namespace GmRelay.Bot.Infrastructure.Telegram;

public static class TelegramSessionBatchRenderer
{
    public static (string Text, InlineKeyboardMarkup Markup) Render(SessionBatchViewModel view)
    {
        var messageText = $"🎲 <b>Новые игры:</b> {System.Net.WebUtility.HtmlEncode(view.Title)}\n\n" +
                          $"<b>Расписание:</b>\n\n";

        var buttons = new List<InlineKeyboardButton[]>();

        foreach (var session in view.Sessions)
        {
            messageText += $"📅 <b>{session.ScheduledAt.FormatMoscow()}</b>\n";
            messageText += session.MaxPlayers.HasValue
                ? $"👥 Места: {session.ActivePlayerCount}/{session.MaxPlayers.Value}\n"
                : $"👥 Игроки ({session.ActivePlayerCount}):\n";

            if (session.ActivePlayers.Count > 0)
            {
                messageText += string.Join("\n", session.ActivePlayers.Select(p =>
                    $"  👤 {(p.TelegramUsername != null ? "@" + p.TelegramUsername : p.DisplayName)}")) + "\n";
            }
            else
            {
                messageText += "  <i>Пока никто не записался</i>\n";
            }

            if (session.WaitlistedPlayers.Count > 0)
            {
                messageText += $"⏳ Лист ожидания ({session.WaitlistedPlayers.Count}):\n";
                messageText += string.Join("\n", session.WaitlistedPlayers.Select(p =>
                    $"  ⏱ {(p.TelegramUsername != null ? "@" + p.TelegramUsername : p.DisplayName)}")) + "\n";
            }

            if (GmRelay.Shared.Domain.SessionStatus.IsCancelled(session.Status))
            {
                messageText += "❌ <i>Сессия отменена</i>\n\n";
            }
            else
            {
                messageText += "\n";
                var actionRow = session.AvailableActions
                    .Select(a => InlineKeyboardButton.WithCallbackData(a.Label, $"{a.ActionKey}:{a.SessionId}"))
                    .ToArray();
                if (actionRow.Length > 0)
                    buttons.Add(actionRow);
            }
        }

        return (messageText, new InlineKeyboardMarkup(buttons));
    }
}