using Shouldly;
using ZB.MOM.NatsNet.Server;

namespace ZB.MOM.NatsNet.Server.Tests.ImplBacklog;

public sealed class ConfigReloaderTests
{
    [Fact] // T:2766
    public void ConfigReloadBoolFlags_ShouldSucceed()
    {
        var options = new ServerOptions();
        var errors = new List<Exception>();
        var warnings = new List<Exception>();

        ServerOptions.ParseCluster(
            new Dictionary<string, object?>
            {
                ["no_advertise"] = true,
                ["connect_backoff"] = true,
            },
            options,
            errors,
            warnings);

        errors.ShouldBeEmpty();
        options.Cluster.NoAdvertise.ShouldBeTrue();
        options.Cluster.ConnectBackoff.ShouldBeTrue();
        options.InConfig.TryGetValue("Cluster.NoAdvertise", out var explicitValue).ShouldBeTrue();
        explicitValue.ShouldBeTrue();
    }

    [Fact]
    public void ParseCluster_WithUnknownFieldAndStrictMode_ReturnsError()
    {
        ServerOptions.NoErrOnUnknownFields(false);

        var options = new ServerOptions();
        var errors = new List<Exception>();

        ServerOptions.ParseCluster(
            new Dictionary<string, object?>
            {
                ["unknown_cluster_field"] = true,
            },
            options,
            errors,
            warnings: null);

        errors.Count.ShouldBe(1);
        errors[0].Message.ShouldContain("unknown field");
    }

    [Fact]
    public void ParseCluster_WithUnknownFieldAndRelaxedMode_IgnoresUnknownField()
    {
        ServerOptions.NoErrOnUnknownFields(true);

        try
        {
            var options = new ServerOptions();
            var errors = new List<Exception>();

            ServerOptions.ParseCluster(
                new Dictionary<string, object?>
                {
                    ["unknown_cluster_field"] = true,
                },
                options,
                errors,
                warnings: null);

            errors.ShouldBeEmpty();
        }
        finally
        {
            ServerOptions.NoErrOnUnknownFields(false);
        }
    }
}