using System;
using System.Collections.Generic;

namespace Svrnty.CQRS.Events.ConsumerGroups.Abstractions;

/// <summary>
/// Information about a consumer in a consumer group.
/// </summary>
public record ConsumerInfo
{
    /// <summary>
    /// The consumer ID.
    /// </summary>
    public required string ConsumerId { get; init; }

    /// <summary>
    /// The consumer group ID.
    /// </summary>
    public required string GroupId { get; init; }

    /// <summary>
    /// The last heartbeat timestamp from this consumer.
    /// </summary>
    public required DateTimeOffset LastHeartbeat { get; init; }

    /// <summary>
    /// When the consumer was first registered.
    /// </summary>
    public required DateTimeOffset RegisteredAt { get; init; }

    /// <summary>
    /// Optional metadata about the consumer (e.g., hostname, version).
    /// </summary>
    public IReadOnlyDictionary<string, string>? Metadata { get; init; }
}