using System.Linq;
using System.Threading.Tasks;
using Abp.Dependency;
using Abp.Domain.Repositories;
using Abp.EntityFramework.Repositories;
using WeOnlineApp.Authorization.Roles;

namespace WeOnlineApp.CommonManager.Sqls
{
    public class SqlManager : ISqlManager, ISingletonDependency
    {
        public SqlManager(IRepository<Role> repository)
        {
            Repository = repository;
        }

        private IRepository<Role> Repository { get; }


        /// <summary>
        /// 执行给定的命令
        /// </summary>
        /// <param name="sql">命令字符串</param>
        /// <param name="parameters">要应用于命令字符串的参数</param>
        /// <returns>执行命令后由数据库返回的结果</returns>
        public int Execute(string sql, params object[] parameters)
        {
            return Repository.GetDbContext().Database.ExecuteSqlCommand(sql, parameters);
        }

        public async Task<int> ExecuteAsync(string sql, params object[] parameters)
        {
            return await Repository.GetDbContext().Database.ExecuteSqlCommandAsync(sql, parameters);
        }

        /// <summary>
        /// 创建一个原始 SQL 查询，该查询将返回给定泛型类型的元素。
        /// </summary>
        /// <typeparam name="T">查询所返回对象的类型</typeparam>
        /// <param name="sql">SQL 查询字符串</param>
        /// <param name="parameters">要应用于 SQL 查询字符串的参数</param>
        /// <returns></returns>
        public IQueryable<T> SqlQuery<T>(string sql, params object[] parameters)
        {
            return Repository.GetDbContext().Database.SqlQuery<T>(sql, parameters).AsQueryable();
        }
        public async Task<IQueryable<T>> SqlQueryAsync<T>(string sql, params object[] parameters)
        {
            var result = Repository.GetDbContext().Database.SqlQuery<T>(sql, parameters).AsQueryable();
            return await Task.FromResult(result);
        }
    }
}