using Nonemm.Core;

namespace Nonemm.Spotting;

/// One station on the bandmap.
public sealed record Spot(
    Callsign Call,
    Frequency Frequency,
    DateTime AtUtc,
    SpotSource Source,
    string Spotter = "",
    string Comment = "")
{
    /// Where the station is listening when it is working split, read out of the
    /// comment. Zero when it is not.
    public Frequency Qsx { get; init; }

    /// False for a mark on the bandmap that is not a station. Nothing judges
    /// one, nothing offers it as a call to work, and space does not take it
    /// into the callsign box.
    public bool IsStation { get; init; } = true;

    /// N1MM's Mark button leaves one of these where the radio is, to say the
    /// frequency is busy and not to come back to it. The label is N1MM's, and
    /// carries the time the mark was left.
    public static Spot Mark(Frequency where, DateTime atUtc, string spotter = "") =>
        new(
            Callsign.Parse($"Busy@{atUtc:HH:mm:ss}"),
            where,
            atUtc,
            SpotSource.Operator,
            spotter,
            "Non-Counting Station")
        {
            IsStation = false,
        };

    /// The computer on the network that put the spot on the bandmap, or empty
    /// for a spot that came from the cluster.
    public string Computer { get; init; } = "";

    /// A spot an operator put on a bandmap, here or on another computer, as
    /// opposed to one from the cluster.
    public bool IsLocal => Source == SpotSource.Operator && IsStation;

    /// The pseudospot that marks where the operator is running. It is drawn on
    /// the bandmap and is never added to it.
    public bool IsCqFrequency { get; init; }

    public static Spot CqFrequency(Frequency where, DateTime atUtc) =>
        new(Callsign.Parse("CQ Frequency"), where, atUtc, SpotSource.Operator)
        {
            IsStation = false,
            IsCqFrequency = true,
        };

    public bool IsSplit => Qsx.Hertz > 0;

    public Band? Band => Bands.ForFrequency(Frequency);
}