Initial commit: GM-Relay Telegram Bot
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using Dapper;
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using GmRelay.Bot.Domain;
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using Npgsql;
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using Telegram.Bot;
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using Telegram.Bot.Types;
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using Telegram.Bot.Types.ReplyMarkups;
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namespace GmRelay.Bot.Features.Sessions.RescheduleSession;
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// ── DTOs ─────────────────────────────────────────────────────────────
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internal sealed record AwaitingProposalDto(
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Guid Id, Guid SessionId, string Title, DateTime CurrentScheduledAt,
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Guid BatchId, int? BatchMessageId, long TelegramChatId);
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internal sealed record VoteParticipantDto(Guid PlayerId, string DisplayName, string? TelegramUsername);
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// ── Handler ──────────────────────────────────────────────────────────
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/// <summary>
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/// Handles text input from the GM who has an AwaitingTime proposal.
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/// Parses the new time, creates a voting message, and tags all participants.
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/// If no participants are registered, reschedules immediately.
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/// </summary>
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public sealed class HandleRescheduleTimeInputHandler(
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NpgsqlDataSource dataSource,
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ITelegramBotClient bot,
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ILogger<HandleRescheduleTimeInputHandler> logger)
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{
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/// <summary>
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/// Attempts to handle a text message as reschedule time input.
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/// Returns true if it was handled (i.e. user had an AwaitingTime proposal).
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/// </summary>
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public async Task<bool> TryHandleAsync(Message message, CancellationToken ct)
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{
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if (message.From is null || string.IsNullOrWhiteSpace(message.Text))
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return false;
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var gmTelegramId = message.From.Id;
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var chatId = message.Chat.Id;
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var text = message.Text.Trim();
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await using var connection = await dataSource.OpenConnectionAsync(ct);
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// 1. Check if this GM has an AwaitingTime proposal in this chat
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var proposal = await connection.QuerySingleOrDefaultAsync<AwaitingProposalDto>(
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"""
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SELECT rp.id AS Id, rp.session_id AS SessionId, s.title AS Title, s.scheduled_at AS CurrentScheduledAt,
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s.batch_id AS BatchId, s.batch_message_id AS BatchMessageId,
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g.telegram_chat_id AS TelegramChatId
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FROM reschedule_proposals rp
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JOIN sessions s ON s.id = rp.session_id
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JOIN game_groups g ON g.id = s.group_id
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WHERE rp.proposed_by = @GmId
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AND rp.status = 'AwaitingTime'
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AND g.telegram_chat_id = @ChatId
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ORDER BY rp.created_at DESC
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LIMIT 1
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""",
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new { GmId = gmTelegramId, ChatId = chatId });
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if (proposal is null)
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return false;
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// 2. Parse the new time
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if (!MoscowTime.TryParseMoscow(text, out var newTime))
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{
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await bot.SendMessage(
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chatId: chatId,
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text: "⚠️ Не удалось распознать время. Используйте формат: <code>ДД.ММ.ГГГГ ЧЧ:ММ</code>\nНапример: <code>25.04.2026 19:30</code>",
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parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
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cancellationToken: ct);
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return true;
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}
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if (newTime <= DateTimeOffset.UtcNow)
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{
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await bot.SendMessage(
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chatId: chatId,
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text: "⚠️ Новое время должно быть в будущем. Попробуйте снова.",
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cancellationToken: ct);
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return true;
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}
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// 3. Load participants (non-GM) signed up for this session
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var participants = (await connection.QueryAsync<VoteParticipantDto>(
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"""
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SELECT p.id AS PlayerId, p.display_name AS DisplayName, p.telegram_username AS TelegramUsername
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FROM session_participants sp
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JOIN players p ON p.id = sp.player_id
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WHERE sp.session_id = @SessionId AND sp.is_gm = false
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""",
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new { proposal.SessionId })).ToList();
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// 4. If no participants — reschedule immediately
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if (participants.Count == 0)
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{
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await RescheduleImmediately(connection, proposal, newTime, chatId, ct);
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await TryDeleteMessage(chatId, message.MessageId, ct);
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return true;
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}
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// 5. Create voting message
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await using var transaction = await connection.BeginTransactionAsync(ct);
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// Update proposal with proposed time and Voting status
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await connection.ExecuteAsync(
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"""
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UPDATE reschedule_proposals
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SET proposed_at = @ProposedAt, status = 'Voting', vote_chat_id = @ChatId
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WHERE id = @Id
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""",
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new { ProposedAt = newTime, ChatId = chatId, Id = proposal.Id },
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transaction);
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await transaction.CommitAsync(ct);
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// Build voting message text
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var voteText = BuildVotingMessage(proposal.Title, proposal.CurrentScheduledAt, newTime, participants, []);
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var keyboard = new InlineKeyboardMarkup([
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[
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InlineKeyboardButton.WithCallbackData("✅ Согласен", $"reschedule_vote:yes:{proposal.Id}"),
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InlineKeyboardButton.WithCallbackData("❌ Против", $"reschedule_vote:no:{proposal.Id}")
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]
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]);
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var voteMsg = await bot.SendMessage(
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chatId: chatId,
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text: voteText,
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parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
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replyMarkup: keyboard,
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cancellationToken: ct);
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// Store vote message ID
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await connection.ExecuteAsync(
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"UPDATE reschedule_proposals SET vote_message_id = @MsgId WHERE id = @Id",
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new { MsgId = voteMsg.MessageId, Id = proposal.Id });
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logger.LogInformation("Reschedule voting started for session {SessionId}, proposal {ProposalId}", proposal.SessionId, proposal.Id);
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// Delete GM's time input message
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await TryDeleteMessage(chatId, message.MessageId, ct);
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return true;
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}
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private async Task RescheduleImmediately(
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NpgsqlConnection connection, AwaitingProposalDto proposal,
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DateTimeOffset newTime, long chatId, CancellationToken ct)
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{
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await using var transaction = await connection.BeginTransactionAsync(ct);
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await connection.ExecuteAsync(
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"""
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UPDATE sessions SET scheduled_at = @NewTime, status = 'Planned', updated_at = now()
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WHERE id = @SessionId
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""",
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new { NewTime = newTime, proposal.SessionId },
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transaction);
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await connection.ExecuteAsync(
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"UPDATE reschedule_proposals SET proposed_at = @NewTime, status = 'Approved' WHERE id = @Id",
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new { NewTime = newTime, Id = proposal.Id },
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transaction);
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await transaction.CommitAsync(ct);
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await bot.SendMessage(
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chatId: chatId,
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text: $"✅ Сессия «{proposal.Title}» перенесена!\n\n📅 Новое время: <b>{newTime.ToOffset(TimeSpan.FromHours(3)).ToString("d MMMM yyyy, HH:mm", System.Globalization.CultureInfo.GetCultureInfo("ru-RU"))}</b> (МСК)\n\n<i>Участников нет — голосование не требуется.</i>",
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parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
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cancellationToken: ct);
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// Re-render batch message with updated time
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await TryUpdateBatchMessage(proposal, ct);
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logger.LogInformation("Session {SessionId} rescheduled immediately (no participants)", proposal.SessionId);
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}
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internal static string BuildVotingMessage(
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string title, DateTime currentTime, DateTimeOffset newTime,
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IReadOnlyList<VoteParticipantDto> participants,
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IReadOnlyCollection<Guid> approvedPlayerIds)
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{
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var lines = new List<string>
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{
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$"🔄 <b>Перенос сессии «{System.Net.WebUtility.HtmlEncode(title)}»</b>",
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"",
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$"📅 Текущее время: <b>{currentTime.FormatMoscow()}</b> (МСК)",
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$"📅 Новое время: <b>{newTime.ToOffset(TimeSpan.FromHours(3)).ToString("d MMMM yyyy, HH:mm", System.Globalization.CultureInfo.GetCultureInfo("ru-RU"))}</b> (МСК)",
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"",
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"Для переноса нужно согласие всех участников:"
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};
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foreach (var p in participants)
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{
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var name = p.TelegramUsername is not null ? $"@{p.TelegramUsername}" : p.DisplayName;
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var icon = approvedPlayerIds.Contains(p.PlayerId) ? "✅" : "⏳";
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lines.Add($" {icon} {name}");
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}
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lines.Add("");
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lines.Add($"Голоса: {approvedPlayerIds.Count}/{participants.Count} ✅");
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return string.Join("\n", lines);
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}
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private async Task TryUpdateBatchMessage(AwaitingProposalDto proposal, CancellationToken ct)
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{
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try
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{
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await using var conn = await dataSource.OpenConnectionAsync(ct);
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var batchSessions = (await conn.QueryAsync<GmRelay.Bot.Features.Sessions.CreateSession.SessionBatchDto>(
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"SELECT id AS SessionId, scheduled_at AS ScheduledAt, status AS Status FROM sessions WHERE batch_id = @BatchId ORDER BY scheduled_at",
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new { proposal.BatchId })).ToList();
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var batchParticipants = (await conn.QueryAsync<GmRelay.Bot.Features.Sessions.CreateSession.ParticipantBatchDto>(
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"""
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SELECT sp.session_id AS SessionId, p.display_name AS DisplayName, p.telegram_username AS TelegramUsername
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FROM session_participants sp
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JOIN players p ON sp.player_id = p.id
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JOIN sessions s ON sp.session_id = s.id
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WHERE s.batch_id = @BatchId AND sp.is_gm = false
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ORDER BY sp.responded_at ASC, p.created_at ASC
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""",
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new { proposal.BatchId })).ToList();
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if (proposal.BatchMessageId.HasValue)
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{
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var renderResult = GmRelay.Bot.Features.Sessions.CreateSession.SessionBatchRenderer.Render(
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proposal.Title, batchSessions, batchParticipants);
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await bot.EditMessageText(
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chatId: proposal.TelegramChatId,
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messageId: proposal.BatchMessageId.Value,
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text: renderResult.Text,
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parseMode: Telegram.Bot.Types.Enums.ParseMode.Html,
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replyMarkup: renderResult.Markup,
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cancellationToken: ct);
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}
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else
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{
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logger.LogWarning("No batch_message_id stored for session {SessionId}, cannot edit batch message in-place", proposal.SessionId);
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}
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}
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catch (Exception ex)
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{
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logger.LogWarning(ex, "Failed to update batch message after immediate reschedule for session {SessionId}", proposal.SessionId);
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}
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}
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private async Task TryDeleteMessage(long chatId, int messageId, CancellationToken ct)
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{
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try
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{
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await bot.DeleteMessage(chatId, messageId, cancellationToken: ct);
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}
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catch (Exception ex)
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{
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logger.LogWarning(ex, "Failed to delete message {MessageId} in chat {ChatId}", messageId, chatId);
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}
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}
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}
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