lg_backend/langguanApi/Service/AlertService.cs

using langguanApi.Extensions.AutoDI;
using langguanApi.Model;
using langguanApi.Model.Dto;
using langguanApi.Model.Entity;
using Npoi.Mapper;
using System.Linq.Expressions;

namespace langguanApi.Service
{
    [ServiceInjection(InjectionType.Transient)]
    public class AlertService : BaseService<Alert>
    {
        public AlertService(IConfiguration config) : base(config, nameof(Alert))
        {
        }
        /// <summary>
        /// 新加
        /// </summary>
        /// <param name="input"></param>
        /// <returns></returns>
        public async Task<ApiResult> Add(Alert input)
        {
            if (input != null)
            {
                await base.CreateAsync(input);
                return new ApiResult { code = 0, msg = "" };
            }
            return new ApiResult { code = -1, msg = "" }; ;
        }
        /// <summary>
        /// 首页数据,最近7天的
        /// </summary>
        /// <returns></returns>
        public async Task<object> IndexData()
        {
            Expression<Func<Alert, bool>> exp = filter => filter.CreateDateTime >= DateTime.Now.AddDays(-7) && filter.IsDelete == false;
            return (await base.GetListWithExp(exp)).OrderByDescending(s => s.CreateDateTime);
        }
        public async Task<byte[]> ExportData(DateTime start, DateTime end)
        {
            Expression<Func<Alert, bool>> exp = filter => filter.CreateDateTime >= start
            && filter.CreateDateTime <= end
            && filter.IsDelete == false;
            var list = await base.GetListWithExp(exp);
            var mapper = new Mapper();
            mapper.Map<Alert>("报警开始时间", s => s.CreateDateTime.ToString("yyyy-MM-dd HH:mm:ss"))
            .Map<Alert>("设备名称", s => s.deviceName)
            // .Map<Alert>("工序", s => s.)
            .Map<Ledger>("新能源", s => s.NewCar ? "是" : "否")
            .Map<Ledger>("燃油车", s => s.Emissions)
            .Map<Ledger>("出厂日间 ", s => s.OutTime)
             .Format<Alert>("yyyy-MM-dd HH:mm:ss", s => s.CreateDateTime);
            MemoryStream stream = new MemoryStream();
            mapper.Save(stream, list.ToList(), sheetName: "sheet1", leaveOpen: true);
            return stream.ToArray();
        }
        /// <summary>
        /// 分页取数据
        /// </summary>
        /// <param name="input"></param>
        /// <returns></returns>
        public async Task<object> GetPage(reqpage input)
        {
            Expression<Func<Alert, bool>> exp = filter => filter.IsDelete == false;
            return await base.GetPager(new ReqPaing()
            {
                pageSize = input.pageSize,
                current = input.current
            }, exp);
        }
    }
}