using LiveForum.Model.Events;
using System.Threading.Tasks;

namespace LiveForum.IService.Messages
{
    /// <summary>
    /// 消息事件总线接口
    /// 负责发布消息相关事件到队列
    /// </summary>
    public interface IMessageEventBus
    {
        /// <summary>
        /// 发布消息事件
        /// </summary>
        /// <typeparam name="T">事件类型</typeparam>
        /// <param name="eventData">事件数据</param>
        /// <returns></returns>
        Task PublishAsync<T>(T eventData) where T : MessageEventBase;

        /// <summary>
        /// 获取队列长度（用于监控）
        /// </summary>
        /// <param name="queueName">队列名称</param>
        /// <returns></returns>
        Task<long> GetQueueLengthAsync(string queueName);
    }
}