AnsonBot/AnsonBot.Bot/ServerModule.cs

using AnsonBot.Core;
using Discord.Interactions;

namespace AnsonBot.Bot;

public class ServerModule : InteractionModuleBase<SocketInteractionContext>
{
    private readonly IRconService _rcon;
    private readonly PlayerTrackerService _tracker;

    public ServerModule(IRconService rcon, PlayerTrackerService tracker)
    {
        _rcon = rcon;
        _tracker = tracker;
    }

    [SlashCommand("players", "Show who's online in Palworld")]
    public async Task PlayersAsync()
    {
        await DeferAsync();

        try
        {
            // Live call so the list is current rather than up to a poll stale.
            var raw = await _rcon.SendAsync("ShowPlayers");
            var online = ShowPlayersParser.Parse(raw);

            if (online.Count == 0)
            {
                await FollowupAsync("Nobody's online.");
                return;
            }

            var sessions = (await _tracker.GetOpenSessionsAsync())
                .ToDictionary(s => s.PlayerId);

            var lines = online.Select(p =>
                sessions.TryGetValue(p.Id, out var s)
                    ? $"• {p.Name} — {Humanize.Duration(DateTime.UtcNow - s.StartedUtc)}"
                    // Joined since the last poll, so no session row exists yet.
                    : $"• {p.Name} — just joined");

            await FollowupAsync($"**{online.Count} online:**\n{string.Join("\n", lines)}");
        }
        catch
        {
            await FollowupAsync("Couldn't reach the Palworld server.", ephemeral: true);
        }
    }
}