using Nonemm.Core;
using Nonemm.Core.Country;
using Nonemm.Spotting;

namespace Nonemm.Session.Tests;

public class InfoLinesTests
{
    private static readonly CountryFile Countries = CountryFile.Parse(
        """
        Slovak Republic:         15:  28:  EU:   48.67:   -19.50:    -1.0:  OM:
            OM;
        United States:           05:  08:  NA:   37.60:    91.87:     5.0:  K:
            K,W;
        """);

    [Fact]
    public void TheCountryLineNamesTheContinentAndTheZoneTheContestCounts()
    {
        CountryLookup country = Countries.Find("OM3XYZ")!;

        Assert.Equal("OM: EU/Slovak Republic, Zn 15", InfoLines.Country(country, usesItuZones: false));
        Assert.Equal("OM: EU/Slovak Republic, Zn 28", InfoLines.Country(country, usesItuZones: true));
    }

    [Fact]
    public void ABearingPutsKilometresFirstOutsideNorthAmerica()
    {
        StationPath path = new(38, 9156, null, null);

        Assert.Equal("Hdg 38° LP 218° 9156km 5689mi", InfoLines.Bearing(path, isNorthAmerica: false));
        Assert.Equal("Hdg 38° LP 218° 5689mi 9156km", InfoLines.Bearing(path, isNorthAmerica: true));
    }

    [Fact]
    public void ASunriseWithinTheHourIsSaidSo()
    {
        CountryLookup country = Countries.Find("OM3XYZ")!;
        (DateTime rise, _) = SunTimes.For(country.Latitude, country.Longitude, new DateTime(2026, 8, 28))!.Value;

        SunLine line = InfoLines.Sun(country, rise.AddMinutes(-20));

        Assert.True(line.IsSoon);
        Assert.Contains("[Sunrise in 20 minutes]", line.Text);
    }

    [Fact]
    public void ASunsetThatHasJustPassedIsSaidSo()
    {
        CountryLookup country = Countries.Find("OM3XYZ")!;
        (_, DateTime set) = SunTimes.For(country.Latitude, country.Longitude, new DateTime(2026, 8, 28))!.Value;

        SunLine line = InfoLines.Sun(country, set.AddMinutes(10));

        Assert.Contains("[Sunset was 10 minutes ago]", line.Text);
    }

    [Fact]
    public void HisTimeIsLeftOutForACountryWithManyTimeZones()
    {
        DateTime noon = new(2026, 8, 28, 12, 0, 0, DateTimeKind.Utc);

        Assert.Contains("His time: 1300(Fri)", InfoLines.Sun(Countries.Find("OM3XYZ")!, noon).Text);
        Assert.DoesNotContain("His time", InfoLines.Sun(Countries.Find("W1AW")!, noon).Text);
    }

    [Fact]
    public void ASpotShowsHowManyMinutesAgoItWasMade()
    {
        DateTime now = new(2026, 8, 28, 12, 10, 30, DateTimeKind.Utc);
        Spot spot = new(
            Callsign.Parse("K1ABC"),
            Frequency.FromKilohertz(14032.3),
            now.AddMinutes(-3),
            SpotSource.Cluster,
            "W8WWV-#",
            "CW 25 dB");

        Assert.Equal("K1ABC - 14032.3 [W8WWV-# @ -3 min] - CW 25 dB", InfoLines.Spot(spot, now));
    }
}