using TeleWave.Domain.Broadcast;
using Xunit;

namespace TeleWave.Domain.Tests.Broadcast;

public class ProgrammingOverrideTests
{
    private static readonly DateTimeOffset Epoch = new(2026, 1, 1, 0, 0, 0, TimeSpan.Zero);

    private static Channel NewChannel() => Channel.Create("c", "c", Epoch);

    [Fact]
    public void OneTime_Covers_OnlyInsideWindow()
    {
        var ovr = NewChannel()
            .AddOverride(OverrideMode.Exclusive, Epoch.AddHours(1), Epoch.AddHours(3));

        Assert.False(ovr.Covers(Epoch.AddMinutes(59)));
        Assert.True(ovr.Covers(Epoch.AddHours(1)));
        Assert.True(ovr.Covers(Epoch.AddHours(2)));
        Assert.False(ovr.Covers(Epoch.AddHours(3))); // конец исключается
    }

    [Fact]
    public void AddShow_AttachesWithWeight()
    {
        var ovr = NewChannel().AddOverride(OverrideMode.Boost, Epoch, Epoch.AddHours(1));
        var showId = Guid.NewGuid();

        var os = ovr.AddShow(showId, 4);

        Assert.Equal(showId, os.ShowId);
        Assert.Equal(4, os.Weight);
        Assert.Single(ovr.Shows);
    }

    [Fact]
    public void Weekly_Covers_MatchingDayAndMinuteWindow()
    {
        // Epoch = 2026-01-01 — четверг (DayOfWeek=4).
        var day = (int)Epoch.UtcDateTime.DayOfWeek;
        var ovr = NewChannel().AddWeeklyOverride(OverrideMode.Exclusive, day, 600, 720); // 10:00–12:00

        Assert.True(ovr.Covers(Epoch.AddMinutes(600))); // 10:00 того же дня
        Assert.True(ovr.Covers(Epoch.AddMinutes(719))); // 11:59
        Assert.False(ovr.Covers(Epoch.AddMinutes(720))); // 12:00 — конец исключается
        Assert.False(ovr.Covers(Epoch.AddMinutes(599))); // 09:59
    }

    [Fact]
    public void Weekly_Covers_NextWeekSameDay()
    {
        var day = (int)Epoch.UtcDateTime.DayOfWeek;
        var ovr = NewChannel().AddWeeklyOverride(OverrideMode.Exclusive, day, 0, 1440);

        Assert.True(ovr.Covers(Epoch.AddDays(7).AddHours(5)));
        Assert.False(ovr.Covers(Epoch.AddDays(1).AddHours(5))); // другой день недели
    }
}