using iWareCommon.Utils;
using iWareLog.ORM;
using iWareLog.Report.Helper;
using System;
using System.Collections.Generic;
using System.Linq;

namespace iWareLog.Report.Service
{
    public class AlertService
    {
        private static object Lock = new object();

        private static AlertService Instance = null;

        /// <summary>
        /// 获取单例的方法
        /// </summary>
        /// <returns>单例实体</returns>
        public static AlertService GetInstance()
        {

            if (Instance == null)
            {
                lock (Lock)
                {
                    if (Instance == null)
                    {
                        Instance = new AlertService();
                    }
                }
            }
            return Instance;
        }



        /// <summary>
        /// 查询时间内故障出现次数，总时间，以设备分组
        /// </summary>
        /// <param name="start"></param>
        /// <param name="end"></param>
        /// <returns></returns>
        public List<AlertHelper> GetAlertByMachine(DateTime start, DateTime end)
        {
            using (DbModelLog context = new DbModelLog())
            {
                try
                {
                    string sql = "SELECT  name,COUNT(equipid) as devalertcount, sum(DATEDIFF(SECOND,createtime,finishtime)) as datediffs FROM DEVAlert  WHERE createtime >= @p0 and createtime < @p1 group by name";
                    List<AlertHelper> data = context.Database.SqlQuery<AlertHelper>(sql, start, end).ToList();
                    return data;
                }
                catch (Exception ex)
                {
                    LogTextHelper.WriteLine("AlertService", "GetAlertByMachine", ex.ToString());
                    return null;
                }
            }
        }

        /// <summary>
        /// 查询时间内故障出现次数，总时间,以故障代码分组
        /// </summary>
        /// <param name="start"></param>
        /// <param name="end"></param>
        /// <returns></returns>
        public List<AlertHelper> GetAlertByAlertCode(DateTime start, DateTime end)
        {
            using (DbModelLog context = new DbModelLog())
            {
                try
                {
                    string sql = "SELECT alertcode, COUNT(alertcode) as alertcount, sum(DATEDIFF(SECOND,createtime,finishtime)) as datediffs FROM DEVAlert  WHERE createtime >= @p0 and createtime < @p1 group by alertcode";
                    List<AlertHelper> data = context.Database.SqlQuery<AlertHelper>(sql, start, end).ToList();
                    return data;
                }
                catch (Exception ex)
                {
                    LogTextHelper.WriteLine("AlertService", "GetAlertByAlertCode", ex.ToString());
                    return null;
                }
            }
        }

    }
}