using NATS.Server.Mqtt;

namespace NATS.Server.Mqtt.Tests.Mqtt;

public class MqttModelParityBatch3Tests
{
    [Fact]
    public void Mqtt_helper_models_cover_go_core_shapes()
    {
        var jsa = new MqttJsa
        {
            AccountName = "A",
            ReplyPrefix = "$MQTT.JSA.A",
            Domain = "D1",
        };

        var pubMsg = new MqttJsPubMsg
        {
            Subject = "$MQTT.msgs.s1",
            Payload = new byte[] { 1, 2, 3 },
            ReplyTo = "$MQTT.JSA.A.reply",
        };

        var delete = new MqttRetMsgDel
        {
            Topic = "devices/x",
            Sequence = 123,
        };

        var persisted = new MqttPersistedSession
        {
            ClientId = "c1",
            LastPacketId = 7,
            MaxAckPending = 1024,
        };

        var retainedRef = new MqttRetainedMessageRef
        {
            StreamSequence = 88,
            Subject = "$MQTT.rmsgs.devices/x",
        };

        var sub = new MqttSub
        {
            Filter = "devices/+",
            Qos = 1,
            JsDur = "DUR-c1",
            Prm = true,
            Reserved = false,
        };

        var filter = new MqttFilter
        {
            Filter = "devices/#",
            Qos = 1,
            TopicToken = "devices",
        };

        var parsedHeader = new MqttParsedPublishNatsHeader
        {
            Subject = "devices/x",
            Mapped = "devices.y",
            IsPublish = true,
            IsPubRel = false,
        };

        jsa.AccountName.ShouldBe("A");
        pubMsg.Payload.ShouldBe(new byte[] { 1, 2, 3 });
        delete.Sequence.ShouldBe(123UL);
        persisted.MaxAckPending.ShouldBe(1024);
        retainedRef.StreamSequence.ShouldBe(88UL);
        sub.JsDur.ShouldBe("DUR-c1");
        filter.TopicToken.ShouldBe("devices");
        parsedHeader.IsPublish.ShouldBeTrue();
    }

    [Fact]
    public void Retained_message_model_includes_origin_flags_and_source_fields()
    {
        var msg = new MqttRetainedMessage(
            Topic: "devices/x",
            Payload: new byte[] { 0x41, 0x42 },
            Origin: "origin-a",
            Flags: 0b_0000_0011,
            Source: "src-a");

        msg.Topic.ShouldBe("devices/x");
        msg.Origin.ShouldBe("origin-a");
        msg.Flags.ShouldBe((byte)0b_0000_0011);
        msg.Source.ShouldBe("src-a");
    }
}