hn_zw_back_main/Service/Ammeter/EmeterEnergyChangeService.cs

using Entity.Ammeter;
using HybirdFrameworkCore.Autofac.Attribute;
using OfficeOpenXml.FormulaParsing.Excel.Functions.DateTime;
using Repository.Ammeter;
using SqlSugar;

namespace Service.Ammeter;

[Scope("SingleInstance")]
public class EmeterEnergyChangeService : BaseServices<EmeterEnergyChange>
{
    private readonly EmeterEnergyChangeRepository _emeterEnergyChangeRep;

    public EmeterEnergyChangeService(EmeterEnergyChangeRepository emeterEnergyChangeRep)
    {
        _emeterEnergyChangeRep = emeterEnergyChangeRep;
        BaseDal = emeterEnergyChangeRep;
    }
    
    /// <summary>
    /// 获取交流电表实时数据
    /// </summary>
    /// <returns></returns>
    public async Task<List<EmeterEnergyChange>> GetEnergyMeterRealTime(string endTime)
    {
        // 将传入的时间参数转换为DateTime类型
        DateTime endDateTime = DateTime.Parse(endTime);
    
        // 根据传入的时间参数计算1分钟的时间
        DateTime startDateTime = endDateTime.AddMinutes(-1);

        List<EmeterEnergyChange> list = await _emeterEnergyChangeRep.QueryListByClauseAsync(i => i.UploadTime>=startDateTime);
        
        return list
            .GroupBy(e => e.Code)
            .Select(g => g.OrderByDescending(e => e.UploadTime).First())
            .ToList();
    }
}