using Nonemm.Contests.Multipliers;
using Nonemm.Core;

namespace Nonemm.Contests.Rules;

/// ARRL November Sweepstakes. A station counts once for the whole contest
/// whatever the band, and the multiplier is the ARRL or RAC section.
public sealed class Sweepstakes : Contest
{
    private readonly ModeCategory mode;

    public Sweepstakes(ModeCategory mode) => this.mode = mode;

    public string Name => mode == ModeCategory.Cw ? "SSCW" : "SSSSB";

    public string DisplayName => $"ARRL Sweepstakes {ModeLabel()}";

    public string CabrilloName => mode == ModeCategory.Cw ? "ARRL-SS-CW" : "ARRL-SS-SSB";

    public IReadOnlyList<ExchangeField> ExchangeFieldsFor(StationInfo me) =>
    [
        new ExchangeField("Nr", ExchangeSlot.SerialNumber, ExchangeFieldKind.Number),
        new ExchangeField("Prec", ExchangeSlot.Precedence, ExchangeFieldKind.Precedence),
        new ExchangeField("Ck", ExchangeSlot.Check, ExchangeFieldKind.Check),
        new ExchangeField("Sec", ExchangeSlot.Section, ExchangeFieldKind.ArrlSection),
    ];

    public IReadOnlyList<string> MultiplierNames => ["Sections"];

    public DupeScope DupeScope => DupeScope.Once;

    public bool HasSerialNumbers => true;

    public IReadOnlyList<ModeCategory> Modes => [mode];

    public string SentExchangeFor(StationInfo me) =>
        $"{me.Precedence} {me.Callsign} {me.Check:00} {me.ArrlSection}";

    public int PointsFor(QsoContext qso) => 2;

    public IReadOnlyList<Multiplier> MultipliersFor(QsoContext qso)
    {
        string section = qso.Qso.Section.Trim().ToUpperInvariant();
        return ArrlSections.IsSection(section) ? [new Multiplier(1, section, "")] : [];
    }

    public int TotalScore(ScoreTally tally, ContestEntry entry) => tally.Points * tally.TotalMultipliers;

    /// Sweepstakes puts the callsign after the serial number and precedence
    /// rather than first, which is why the writer takes the whole column list.
    public CabrilloExchange CabrilloExchange(Qso qso, StationInfo me, ContestEntry entry) =>
        new(
            [
                new CabrilloField($"{qso.SentNumber}", 4),
                new CabrilloField(me.Precedence, 1),
                new CabrilloField(me.Callsign, 13),
                new CabrilloField($"{me.Check:00}", 2),
                new CabrilloField(me.ArrlSection, 3),
            ],
            [
                new CabrilloField($"{qso.ReceivedNumber}", 4),
                new CabrilloField(qso.Precedence, 1),
                new CabrilloField(qso.Call.Text, 13),
                new CabrilloField($"{qso.Check:00}", 2),
                new CabrilloField(qso.Section, 3),
            ]);

    private string ModeLabel() => mode == ModeCategory.Cw ? "CW" : "SSB";
}