Initial commit: GM-Relay Telegram Bot

2026-04-13 13:52:49 +03:00
commit 9db4bee2f6
51 changed files with 3407 additions and 0 deletions
@@ -0,0 +1,103 @@
+using Dapper;
+using GmRelay.Bot.Domain;
+using Npgsql;
+using Telegram.Bot;
+
+namespace GmRelay.Bot.Features.Reminders.SendJoinLink;
+
+// ── DTOs ─────────────────────────────────────────────────────────────
+
+internal sealed record JoinLinkSession(
+    Guid Id,
+    string Title,
+    string JoinLink,
+    DateTime ScheduledAt,
+    long TelegramChatId);
+
+internal sealed record ConfirmedPlayer(
+    long TelegramId,
+    string DisplayName,
+    string? TelegramUsername);
+
+// ── Handler ──────────────────────────────────────────────────────────
+
+/// <summary>
+/// Sends the join link to the group chat at T-5min, tagging all confirmed players.
+/// Called by SessionSchedulerService.
+/// </summary>
+public sealed class SendJoinLinkHandler(
+    NpgsqlDataSource dataSource,
+    ITelegramBotClient bot,
+    ILogger<SendJoinLinkHandler> logger)
+{
+    public async Task HandleAsync(Guid sessionId, CancellationToken ct)
+    {
+        await using var connection = await dataSource.OpenConnectionAsync(ct);
+
+        // 1. Load session
+        var session = await connection.QuerySingleOrDefaultAsync<JoinLinkSession>(
+            """
+            SELECT s.id, s.title, s.join_link AS JoinLink, s.scheduled_at AS ScheduledAt,
+                   g.telegram_chat_id AS TelegramChatId
+            FROM sessions s
+            JOIN game_groups g ON g.id = s.group_id
+            WHERE s.id = @SessionId
+              AND s.status = @Confirmed
+              AND s.link_message_id IS NULL
+            """,
+            new { SessionId = sessionId, Confirmed = SessionStatus.Confirmed });
+
+        if (session is null)
+        {
+            logger.LogWarning("Session {SessionId} not eligible for join link", sessionId);
+            return;
+        }
+
+        // 2. Load confirmed players
+        var players = (await connection.QueryAsync<ConfirmedPlayer>(
+            """
+            SELECT p.telegram_id    AS TelegramId,
+                   p.display_name    AS DisplayName,
+                   p.telegram_username AS TelegramUsername
+            FROM session_participants sp
+            JOIN players p ON p.id = sp.player_id
+            WHERE sp.session_id = @SessionId
+              AND sp.rsvp_status = @Confirmed
+            """,
+            new { SessionId = sessionId, Confirmed = RsvpStatus.Confirmed })).ToList();
+
+        // 3. Build message with player mentions
+        var mentions = string.Join(", ", players.Select(p =>
+            p.TelegramUsername is not null ? $"@{p.TelegramUsername}" : p.DisplayName));
+
+        var text = $"""
+            🎮 Игра «{session.Title}» начинается через 5 минут!
+
+            🔗 Ссылка на подключение:
+            {session.JoinLink}
+
+            Участники: {mentions}
+
+            Хорошей игры! 🎲
+            """;
+
+        // 4. Send
+        var message = await bot.SendMessage(
+            chatId: session.TelegramChatId,
+            text: text,
+            cancellationToken: ct);
+
+        // 5. Mark as sent (idempotent — link_message_id IS NULL guard in query)
+        await connection.ExecuteAsync(
+            """
+            UPDATE sessions
+            SET    link_message_id = @MessageId, updated_at = now()
+            WHERE  id = @SessionId AND link_message_id IS NULL
+            """,
+            new { SessionId = sessionId, MessageId = message.MessageId });
+
+        logger.LogInformation(
+            "Join link sent for session {SessionId} ({Title}), message_id={MessageId}",
+            sessionId, session.Title, message.MessageId);
+    }
+}