namespace ZB.MOM.WW.OtOpcUa.Driver.AbLegacy.IntegrationTests;

/// <summary>
///     Crosses the PCCC compose profiles with both AbLegacy transports so each integration test runs
///     once on libplctag and once on the native managed stack.
/// </summary>
/// <remarks>
///     Preserves the <c>AB_LEGACY_COMPOSE_PROFILE</c> filter the smoke theory always applied: when set,
///     <see cref="KnownProfiles.All"/> is narrowed to that profile <b>before</b> it is crossed with the
///     transports, so the rows match the running container. Unset, every family is crossed because each
///     has its own port and skips itself when unreachable — <b>unless</b> <c>AB_LEGACY_ENDPOINT</c> pins
///     one device, in which case the family is a property of that device and cannot be detected, so only
///     the default SLC500 profile is crossed (set <c>AB_LEGACY_COMPOSE_PROFILE</c> to pick another).
/// </remarks>
public static class TransportMatrix
{
    /// <summary>Both transports, for tests that are not parameterised by profile.</summary>
    public static IReadOnlyList<AbLegacyTransport> AllTransports { get; } =
        [AbLegacyTransport.Libplctag, AbLegacyTransport.Native];

    /// <summary>Gets <c>(profile, transport)</c> rows for every selected profile × both transports.</summary>
    public static IEnumerable<object[]> Profiles
    {
        get
        {
            var only = Environment.GetEnvironmentVariable("AB_LEGACY_COMPOSE_PROFILE");
            if (string.IsNullOrEmpty(only) &&
                Environment.GetEnvironmentVariable("AB_LEGACY_ENDPOINT") is { Length: > 0 })
                only = KnownProfiles.Slc500.ComposeProfile;
            return from p in KnownProfiles.All
                   where string.IsNullOrEmpty(only) ||
                         string.Equals(p.ComposeProfile, only, StringComparison.OrdinalIgnoreCase)
                   from t in AllTransports
                   select new object[] { p, t };
        }
    }

    /// <summary>Gets one row per transport.</summary>
    public static IEnumerable<object[]> Transports =>
        AllTransports.Select(t => new object[] { t });
}