using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Threading.Tasks;
using Hncore.Infrastructure.Data;
using Microsoft.EntityFrameworkCore;

namespace Hncore.Infrastructure.DDD
{
    public interface IQuery<TEntity,TId> where TEntity : IEntity<TId>
    {
        TEntity GetOne(Expression<Func<TEntity, bool>> condition);
        
        Task<TEntity> GetOneAsync(Expression<Func<TEntity, bool>> condition);

        PageData<TEntity> GetList(Expression<Func<TEntity, bool>> condition, int pagesize, int pageindex, bool istotal);
        
        Task<PageData<TEntity>> GetListAsync(Expression<Func<TEntity, bool>> condition, int pagesize, int pageindex, bool istotal);

        List<TEntity> GetList(Expression<Func<TEntity, bool>> condition);
        
        Task<List<TEntity>> GetListAsync(Expression<Func<TEntity, bool>> condition);

        bool Exists(Expression<Func<TEntity, bool>> condition);
        
        Task<bool> ExistsAsync(Expression<Func<TEntity, bool>> condition);

        List<TEntity> TopN(Expression<Func<TEntity, bool>> condition, int topN);
        
        Task<List<TEntity>> TopNAsync(Expression<Func<TEntity, bool>> condition, int topN);

        IQueryable<TEntity> GetListQueryable(Expression<Func<TEntity, bool>> condition);

        IQueryable<TEntity> GetQueryable();

        DbContext DbContext();
      
    }
}