using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace JiShe.CollectBus.Kafka.Consumer
{
    public interface IConsumerService
    {
        Task SubscribeAsync<TKey, TValue>(string topic, Func<TKey, TValue, Task<bool>> messageHandler, string? groupId=null) where TKey : notnull where TValue : class;

        /// <summary>
        /// 订阅消息
        /// </summary>
        /// <typeparam name="TValue"></typeparam>
        /// <param name="topic"></param>
        /// <param name="messageHandler"></param>
        /// <returns></returns>
        Task SubscribeAsync<TValue>(string topic, Func<TValue, Task<bool>> messageHandler, string? groupId = null) where TValue : class;

        Task SubscribeAsync<TKey, TValue>(string[] topics, Func<TKey, TValue, Task<bool>> messageHandler, string? groupId) where TKey : notnull where TValue : class;


        /// <summary>
        /// 订阅消息
        /// </summary>
        /// <typeparam name="TKey"></typeparam>
        /// <typeparam name="TValue"></typeparam>
        /// <param name="topics"></param>
        /// <param name="messageHandler"></param>
        /// <returns></returns>
        Task SubscribeAsync<TValue>(string[] topics, Func<TValue, Task<bool>> messageHandler, string? groupId = null) where TValue : class;

        void Unsubscribe<TKey, TValue>() where TKey : notnull where TValue : class;
    }
}