using FluentAssertions;
using Marathon.Domain.Entities;
using Marathon.Domain.Enums;
using Marathon.Domain.ValueObjects;

namespace Marathon.Domain.Tests.Entities;

public sealed class OddsSnapshotTests
{
    private static readonly EventId SampleEventId = new("26456117");
    private static readonly DateTimeOffset SampleCapturedAt = DateTimeOffset.UtcNow;
    private static readonly IReadOnlyList<Bet> OneBet =
    [
        new Bet(MatchScope.Instance, BetType.Win, Side.Side1, null, new OddsRate(1.85m)),
    ];

    [Fact]
    public void Constructor_CreatesInstance_WhenBetsIsNonEmpty()
    {
        var snapshot = new OddsSnapshot(SampleEventId, SampleCapturedAt, OddsSource.PreMatch, OneBet);
        snapshot.EventId.Should().Be(SampleEventId);
        snapshot.Bets.Should().HaveCount(1);
    }

    [Fact]
    public void Constructor_ThrowsArgumentException_WhenBetsIsEmpty()
    {
        var act = () => new OddsSnapshot(SampleEventId, SampleCapturedAt, OddsSource.PreMatch, []);
        act.Should().Throw<ArgumentException>()
            .WithParameterName("bets");
    }

    [Fact]
    public void Constructor_ThrowsArgumentNullException_WhenEventIdIsNull()
    {
        var act = () => new OddsSnapshot(null!, SampleCapturedAt, OddsSource.PreMatch, OneBet);
        act.Should().Throw<ArgumentNullException>()
            .WithParameterName("eventId");
    }

    [Fact]
    public void Constructor_ThrowsArgumentNullException_WhenBetsIsNull()
    {
        var act = () => new OddsSnapshot(SampleEventId, SampleCapturedAt, OddsSource.PreMatch, null!);
        act.Should().Throw<ArgumentNullException>()
            .WithParameterName("bets");
    }

    [Fact]
    public void OddsSnapshot_IsImmutable_NoSettablePublicProperties()
    {
        var snapshotType = typeof(OddsSnapshot);
        var settableProperties = snapshotType.GetProperties()
            .Where(p => p.CanWrite && p.GetSetMethod(nonPublic: false) is not null)
            .ToList();

        settableProperties.Should().BeEmpty("OddsSnapshot must be immutable.");
    }
}