using Nonemm.Contests.Rules;
using Nonemm.Core;
using Nonemm.Core.Country;

namespace Nonemm.Session.Tests;

public class QsoEditorTests
{
    private const string Countries = """
        Germany:                  14:  28:  EU:   51.00:  -10.00:   -1.0:  DL:
            DL,DK,DJ;
        Japan:                    25:  45:  AS:   36.40: -138.38:   -9.0:  JA:
            JA,JH,JR;
        """;

    private static readonly StationInfo Me = new()
    {
        Callsign = "DL1ABC",
        CqZone = 14,
        ItuZone = 28,
        Continent = "EU",
        CountryPrefix = "DL",
    };

    private static QsoEditor CqWw() =>
        new(new CqWorldWide(ModeCategory.Cw), Me, CountryFile.Parse(Countries));

    private static QsoEditor Sweeps() =>
        new(new Sweepstakes(ModeCategory.Cw), Me, CountryFile.Parse(Countries));

    private static Qso Contact() => new()
    {
        Id = "1",
        TimestampUtc = new DateTime(2026, 5, 30, 12, 34, 56, DateTimeKind.Utc),
        Call = Callsign.Parse("JA1XYZ"),
        Frequency = Frequency.FromKilohertz(14_025),
        Mode = Modes.Cw,
        ContestName = "CQWW",
        SentReport = "599",
        ReceivedReport = "599",
        Zone = 25,
        CountryPrefix = "JA",
        Continent = "AS",
    };

    [Fact]
    public void TheColumnsFollowTheContestExchange()
    {
        IReadOnlyList<QsoField> fields = [.. CqWw().Columns.Select(c => c.Field)];

        Assert.Contains(QsoField.Zone, fields);
        Assert.DoesNotContain(QsoField.Section, fields);
        Assert.DoesNotContain(QsoField.SentNumber, fields);
    }

    /// Sweepstakes counts serial numbers, so the log shows the one we sent.
    [Fact]
    public void AContestWithSerialNumbersGetsASentNumberColumn() =>
        Assert.Contains(QsoField.SentNumber, Sweeps().Columns.Select(c => c.Field));

    [Fact]
    public void ChangingTheCallLooksTheCountryUpAgain()
    {
        QsoEdit edit = CqWw().Apply(Contact(), QsoField.Call, "dl2xyz");

        Assert.True(edit.IsAccepted);
        Assert.Equal("DL2XYZ", edit.Result!.Call.Text);
        Assert.Equal("DL", edit.Result.CountryPrefix);
        Assert.Equal("EU", edit.Result.Continent);
        Assert.Equal("DL2", edit.Result.WpxPrefix);
    }

    [Theory]
    [InlineData("12345")]
    [InlineData("AB")]
    [InlineData("JA1XY Z")]
    public void ATextThatIsNotShapedLikeACallIsRefused(string text)
    {
        QsoEdit edit = CqWw().Apply(Contact(), QsoField.Call, text);

        Assert.False(edit.IsAccepted);
        Assert.Contains("callsign", edit.Error);
    }

    [Fact]
    public void ARefusedEditReturnsNoContact() =>
        Assert.Null(CqWw().Apply(Contact(), QsoField.Zone, "41").Result);

    [Theory]
    [InlineData("40", true)]
    [InlineData("1", true)]
    [InlineData("41", false)]
    [InlineData("0", false)]
    [InlineData("two", false)]
    public void CqZonesRunFromOneToForty(string text, bool accepted) =>
        Assert.Equal(accepted, CqWw().Apply(Contact(), QsoField.Zone, text).IsAccepted);

    [Fact]
    public void AnUnknownSectionIsRefused() =>
        Assert.False(Sweeps().Apply(Contact(), QsoField.Section, "ZZ").IsAccepted);

    [Fact]
    public void ASectionIsStoredUpperCase() =>
        Assert.Equal("STX", Sweeps().Apply(Contact(), QsoField.Section, "stx").Result!.Section);

    [Fact]
    public void ACommentKeepsTheCaseItWasTypedIn() =>
        Assert.Equal("Nice signal", CqWw().Apply(Contact(), QsoField.Comment, "Nice signal").Result!.Comment);

    [Fact]
    public void ClearingAFieldIsAllowed() =>
        Assert.Equal(0, CqWw().Apply(Contact(), QsoField.Zone, "").Result!.Zone);

    [Fact]
    public void TheTimeIsReadAsUtc()
    {
        QsoEdit edit = CqWw().Apply(Contact(), QsoField.Time, "2026-05-30 13:00:00");

        Assert.Equal(new DateTime(2026, 5, 30, 13, 0, 0, DateTimeKind.Utc), edit.Result!.TimestampUtc);
    }

    [Fact]
    public void AFrequencyIsTypedInKilohertz() =>
        Assert.Equal(
            21_005_000,
            CqWw().Apply(Contact(), QsoField.Frequency, "21005").Result!.Frequency.Hertz);

    [Fact]
    public void AModeTheLoggerDoesNotKnowIsRefused() =>
        Assert.False(CqWw().Apply(Contact(), QsoField.Mode, "SSTV").IsAccepted);

    [Fact]
    public void AnEmptyNumberReadsBackAsAnEmptyColumn() =>
        Assert.Equal("", QsoEditor.Read(Contact() with { Zone = 0 }, QsoField.Zone));
}