using Nonemm.Core;

namespace Nonemm.Contests;

/// Reading the exchange back out of a logged contact, one entry box at a time.
/// `ExchangeSlots.Apply` in `Nonemm.Session` puts the values in.
public static class QsoExchange
{
    /// What the contact holds for one exchange box, or an empty string for a
    /// box it holds nothing for.
    public static string ValueOf(Qso qso, ExchangeSlot slot) => slot switch
    {
        ExchangeSlot.SentReport => qso.SentReport,
        ExchangeSlot.SentNumber => Digits(qso.SentNumber),
        ExchangeSlot.ReceivedReport => qso.ReceivedReport,
        ExchangeSlot.SerialNumber => Digits(qso.ReceivedNumber),
        ExchangeSlot.Zone => Digits(qso.Zone),
        ExchangeSlot.Section => qso.Section,
        ExchangeSlot.Check => Digits(qso.Check),
        ExchangeSlot.Precedence => qso.Precedence,
        ExchangeSlot.Exchange1 => qso.Exchange1,
        ExchangeSlot.MiscText => qso.MiscText,
        ExchangeSlot.Name => qso.Name,
        ExchangeSlot.Qth => qso.Qth,
        ExchangeSlot.GridSquare => qso.GridSquare,
        ExchangeSlot.Power => qso.Power,
        ExchangeSlot.Comment => qso.Comment,
        _ => "",
    };

    private static string Digits(int value) => value > 0 ? value.ToString() : "";
}