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

namespace Platform.Infrastructure.SignalRLayer.Service
{
   public interface ISignalRMessage<T> where T :class
    {
        /// <summary>
        /// 新增
        /// </summary>
        /// <param name="entity"></param>
        /// <returns></returns>
        bool Add(T entity);

        /// <summary>
        /// 更新
        /// </summary>
        /// <param name="entity"></param>
        /// <returns></returns>
        /// 
        bool Update(T entity);

        ///// <summary>
        ///// 删除
        ///// </summary>
        ///// <param name="id"></param>
        ///// <returns></returns>
        //bool Delete(string id);

        /// <summary>
        /// 删除
        /// </summary>
        /// <param name="expression"></param>
        /// <returns></returns>
        bool Delete(Expression<Func<T, bool>> expression);

        /// <summary>
        /// 查询记录条数
        /// </summary>
        /// <returns></returns>
        int GetTotalCount(Expression<Func<T, bool>> expression);

        /// <summary>
        /// 查询所有记录
        /// </summary>
        /// <returns></returns>
        List<T> GetAll();

        List<T> GetAllByCondition(Expression<Func<T, bool>> expression);
        
        List<T> GetAllByCondition(string condition);


        /// <summary>
        /// 查询单条记录
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        T GetSingal(string id);

        /// <summary>
        /// 根据条件查询数据
        /// </summary>
        /// <param name="expression">条件表达式</param>
        /// <returns></returns>
        T GetSingal(Expression<Func<T, bool>> expression);

        T FirstOrDefault(Expression<Func<T, bool>> expression);

        /*
        /// <summary>
        /// 查询单条已读
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        T GetSingalRead(string id);

        /// <summary>
        ///查询所有未读记录
        /// </summary>
        /// <returns></returns>
        List<T> GetAllNoRead();

        /// <summary>
        /// 查询一个人员未读记录
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        List<T> GetAllNoReadById(string id);

        int UpdateStatus(string id);
        */
        //List<T> GetList


    }
}