using NUnit.Framework;
using SVSim.EmulatedEntrypoint.Services;

namespace SVSim.UnitTests.Services;

public class ShadowverseSessionServiceTests
{
    /// <summary>
    /// Fixture captured live from a fresh signup against this server. The client computed this
    /// exact SID locally and sent it on the next /check/game_start request. Pinning the formula
    /// here means any future refactor of <see cref="ShadowverseSessionService.ComputeClientSessionId"/>
    /// that drifts from <c>Cute/Cryptographer.MakeMd5(viewerId + udid)</c> will fail this test
    /// before the user discovers it as a decrypt failure on game_start.
    /// </summary>
    [Test]
    public void ComputeClientSessionId_matches_captured_fixture()
    {
        var svc = new ShadowverseSessionService();
        const long viewerId = 1;
        var udid = new System.Guid("62747917-93bc-454c-abb4-ef423b3c9317");

        string sid = svc.ComputeClientSessionId(viewerId, udid);

        Assert.That(sid, Is.EqualTo("dc4aac79d35fe15dfb6262e0071bb03c"));
    }

    [Test]
    public void StoreSessionForViewer_makes_sid_resolvable_to_udid()
    {
        var svc = new ShadowverseSessionService();
        const long viewerId = 1;
        var udid = new System.Guid("62747917-93bc-454c-abb4-ef423b3c9317");

        svc.StoreSessionForViewer(viewerId, udid);

        Assert.That(svc.GetUdidFromSessionId("dc4aac79d35fe15dfb6262e0071bb03c"), Is.EqualTo(udid));
    }
}