lg_backend/langguanApi/Service/AlertService.cs

using langguanApi.Extensions.AutoDI;
using langguanApi.Model;
using langguanApi.Model.Dto;
using langguanApi.Model.Entity;
using Mapster;
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(AddAlertDto input)
        {
            if (input != null)
            {
                var entity = input.Adapt<Alert>();
                await base.CreateAsync(entity);
                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(int num = 50)
        {
            Expression<Func<Alert, bool>> exp = filter => filter.IsDelete == false;
            return (await base.GetListWithExp(exp))
                .OrderByDescending(s => s.CreateDateTime)
                .Take(num)
                .Select(s => new
                {
                    s.AlertContent,
                    s.deviceName,
                    s.CreateDateTime
                }).ToList();
        }
        /// <summary>
        ///导出数据
        /// </summary>
        /// <param name="start"></param>
        /// <param name="end"></param>
        /// <returns></returns>
        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)).OrderByDescending(s => s.CreateDateTime).ToList();
            if (list.Any())
            {
                var mapper = new Mapper();
                mapper.Map<Alert>("报警开始时间", s => s.CreateDateTime)
                .Map<Alert>("设备名称", s => s.deviceName)
                // .Map<Alert>("工序", s => s.)
                .Map<Alert>("内容", s => s.AlertContent)
                 .Format<Alert>("yyyy-MM-dd HH:mm:ss", s => s.CreateDateTime);
                MemoryStream stream = new MemoryStream();
                mapper.Save(stream, list, sheetName: "sheet1", leaveOpen: true);
                return stream.ToArray();
            }
            return null;
        }
        /// <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);
        }
    }
}