using Omika.Core.Domain.Exceptions;
using Omika.Core.Domain.ValueObjects;

namespace Omika.Tests.Domain;

/// <summary>
/// Tests de l'objet de valeur <see cref="DateTimeRange"/>.
/// </summary>
public class DateTimeRangeTests
{
    [Fact]
    public void DateTimeRange_RejectsEndBeforeStart()
    {
        var start = new DateTime(2026, 1, 10, 9, 0, 0);
        var end = new DateTime(2026, 1, 10, 8, 0, 0);

        Assert.Throws<DomainValidationException>(() => new DateTimeRange(start, end));
    }

    [Fact]
    public void DateTimeRange_AcceptsEqualDates()
    {
        var instant = new DateTime(2026, 1, 10, 9, 0, 0);
        var range = new DateTimeRange(instant, instant);

        Assert.Equal(TimeSpan.Zero, range.Duration);
    }

    [Fact]
    public void DateTimeRange_ComputesDurationAndContains()
    {
        var range = new DateTimeRange(
            new DateTime(2026, 1, 10, 9, 0, 0),
            new DateTime(2026, 1, 10, 11, 30, 0));

        Assert.Equal(TimeSpan.FromMinutes(150), range.Duration);
        Assert.True(range.Contains(new DateTime(2026, 1, 10, 10, 0, 0)));
        Assert.False(range.Contains(new DateTime(2026, 1, 10, 12, 0, 0)));
    }

    [Fact]
    public void DateTimeRange_DetectsOverlap()
    {
        var a = new DateTimeRange(
            new DateTime(2026, 1, 10, 9, 0, 0),
            new DateTime(2026, 1, 10, 11, 0, 0));
        var b = new DateTimeRange(
            new DateTime(2026, 1, 10, 10, 0, 0),
            new DateTime(2026, 1, 10, 12, 0, 0));
        var c = new DateTimeRange(
            new DateTime(2026, 1, 10, 13, 0, 0),
            new DateTime(2026, 1, 10, 14, 0, 0));

        Assert.True(a.Overlaps(b));
        Assert.False(a.Overlaps(c));
    }
}