dolittle/DotNET.SDK

// Copyright (c) Dolittle. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.

using Dolittle.SDK.Concepts;

namespace Dolittle.SDK.Events;

/// <summary>
/// Represents a version of an aggregate root as a natural number, corresponding to the number of events the Aggregate Root has applied to an Event Source.
/// </summary>
public record AggregateRootVersion(ulong Value) : ConceptAs<ulong>(Value)
{
    /// <summary>
    /// The initial version of an aggregate root that has applied no events.
    /// </summary>
    public static readonly AggregateRootVersion Initial = 0;

    /// <summary>
    /// Implicitly convert a <see cref="ulong"/> to an <see cref="AggregateRootVersion"/>.
    /// </summary>
    /// <param name="number">The number.</param>
    public static implicit operator AggregateRootVersion(ulong number) => new(number);
}