using IBigBreenService;
using Microsoft.IdentityModel.Tokens;
using OfficeOpenXml.FormulaParsing.Excel.Functions.DateTime;
using SqlSugar;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using WIDESEA_Common.CommonEnum;
using WIDESEA_Common.LocationEnum;
using WIDESEA_Common.OrderEnum;
using WIDESEA_Common.TaskEnum;
using WIDESEA_Core;
using WIDESEA_Core.BaseRepository;
using WIDESEA_Core.Helper;
using WIDESEA_Model.Models;
using WIDESEA_Model.Models.Basic;

namespace BigGreenService
{
    public class BigGreenService : IBigGreenService
    {
        private readonly IRepository<Dt_StockInfoDetail> _stockInfoDetailRepository;
        private readonly IRepository<Dt_OutboundOrder> _outBoundOrderRepository;
        private readonly IRepository<Dt_LocationInfo> _locationInfoRepository;
        private readonly IRepository<Dt_OutboundOrderDetail> _outBoundOrderDetailRepository;
        private readonly IRepository<Dt_InboundOrderDetail> _inboundOrderDetailRepository;
        private readonly IRepository<Dt_Task_Hty> _taskHtyRepository;
        private readonly IRepository<Dt_Task> _taskRepository;
        private readonly IRepository<Dt_StockInfo> _stockInfoRepository;
        private readonly IRepository<Dt_MaterialExpirationDate> _materialExpirationDateRepository;

        public BigGreenService(IRepository<Dt_StockInfoDetail> stockInfoDetailRepository, IRepository<Dt_OutboundOrder> outBoundOrderRepository, IRepository<Dt_LocationInfo> locationInfoRepository, IRepository<Dt_OutboundOrderDetail> outBoundOrderDetailRepository, IRepository<Dt_InboundOrderDetail> inboundOrderDetailRepository, IRepository<Dt_Task> taskRepository, IRepository<Dt_Task_Hty> taskHtyRepository, IRepository<Dt_StockInfo> stockInfoRepository, IRepository<Dt_MaterialExpirationDate> materialExpirationDateRepository)
        {
            _stockInfoDetailRepository = stockInfoDetailRepository;
            _outBoundOrderRepository = outBoundOrderRepository;
            _locationInfoRepository = locationInfoRepository;
            _outBoundOrderDetailRepository = outBoundOrderDetailRepository;
            _inboundOrderDetailRepository = inboundOrderDetailRepository;
            _taskRepository = taskRepository;
            _taskHtyRepository = taskHtyRepository;
            _stockInfoRepository = stockInfoRepository;
            _materialExpirationDateRepository = materialExpirationDateRepository;
        }
        public WebResponseContent GetBigGreenData()
        {
            //计算总库存数量
            var totalStockQuantity = _stockInfoDetailRepository.Db.Queryable<Dt_StockInfoDetail>().Sum(x => (decimal?)x.StockQuantity) ?? 0;

            //计算待出库订单
            var targetStatus = new List<int>
            {
                (int)OutOrderStatusEnum.出库中,
                (int)OutOrderStatusEnum.未开始
            };
            var unOutBound = _outBoundOrderRepository.Db.Queryable<Dt_OutboundOrder>().Where(x => targetStatus.Contains(x.OrderStatus)).Count();

            //计算库位利用率
            var freeLocation = _locationInfoRepository.Db.Queryable<Dt_LocationInfo>().Where(x => x.LocationStatus == (int)LocationStatusEnum.Free).Count();
            var inStockLocation = _locationInfoRepository.Db.Queryable<Dt_LocationInfo>().Where(x => x.LocationStatus == (int)LocationStatusEnum.InStock || x.LocationStatus == (int)LocationStatusEnum.Pallet).Count();
            int totalLocation = freeLocation + inStockLocation;
            decimal locationUtilizationRate = totalLocation == 0
                ? 0
                : Math.Round((decimal)inStockLocation / totalLocation, 4) * 100;

            //计算入库任务和出库任务完成数量
            var inboundCount = _taskHtyRepository.Db.Queryable<Dt_Task_Hty>().Where(x => x.TaskType >= 500 && x.TaskType < 900 && x.CreateDate.ToString("yyyy-MM-dd") == DateTime.Now.ToString("yyyy-MM-dd")).Count();
            var outboundCount = _taskHtyRepository.Db.Queryable<Dt_Task_Hty>().Where(x => x.TaskType >= 100 && x.TaskType < 500 && x.CreateDate.ToString("yyyy-MM-dd") == DateTime.Now.ToString("yyyy-MM-dd")).Count();

            //计算有货料箱数量
            var inStockPallet = _stockInfoRepository.Db.Queryable<Dt_StockInfo>().Where(x => x.PalletType == (int)PalletTypeEnum.None && !string.IsNullOrEmpty(x.LocationCode)).Count();
            //计算空箱数量
            var freeStockPallet = _stockInfoRepository.Db.Queryable<Dt_StockInfo>().Where(x => x.PalletType == (int)PalletTypeEnum.Empty && !string.IsNullOrEmpty(x.LocationCode)).Count();
            // 4. 获取近7日每日出入库明细（核心修改：调用上面的方法）
            var dailyInOutBoundList = Get7DaysDailyInOutBound();

            var nearExpirationList = GetMaterialsNearExpiration();
            //获取作业统计
            var completeTask = SimpleStatistics();
            //任务
            List<Dt_Task> tasks = _taskRepository.QueryData();

            var bigGreenData = new BigGreenDataDto
            {
                TotalStockQuantity = totalStockQuantity,
                UnOutBoundOrderCount = unOutBound,
                LocationUtilizationRate = locationUtilizationRate,
                DailyInOutBoundList = dailyInOutBoundList,
                TaskList = tasks,
                InboundCount = inboundCount,
                OutboundCount = outboundCount,
                InStockPallet = inStockPallet,
                FreeStockPallet = freeStockPallet,
                CompleteTask = completeTask,
                NearExpirationList = nearExpirationList
            };
            return WebResponseContent.Instance.OK(data: bigGreenData);
        }

        /// <summary>
        /// 获取近7日每日出入库明细
        /// </summary>
        /// <returns>每日出入库明细列表</returns>
        private List<DailyInOutBoundDto> Get7DaysDailyInOutBound()
        {
            // 1. 定义时间范围（近7个自然日）
            DateTime endDate = DateTime.Today;
            DateTime startDate = endDate.AddDays(-6);
            // 生成近7日所有日期（确保无缺失，即使某一天无数据也返回0）
            var all7Days = Enumerable.Range(0, 7)
                .Select(i => endDate.AddDays(-i).ToString("MM-dd"))
                .Reverse() // 按日期升序排列（从7天前到今日）
                .ToList();

            // 2. 查询每日出库明细（按日期分组）
            var dailyOutboundList = _outBoundOrderDetailRepository.Db
                .Queryable<Dt_OutboundOrderDetail>()
                .Where(x => x.CreateDate >= startDate
                         && x.CreateDate < endDate.AddDays(1))

                .Select(x => new
                {
                    Date = x.CreateDate.ToString("MM-dd"),
                    x.OverOutQuantity
                })
                .ToList()
                .GroupBy(x => x.Date)
                .ToDictionary(k => k.Key, g => g.Sum(x => (decimal?)x.OverOutQuantity) ?? 0); // 转为字典方便匹配

            // 3. 查询每日入库明细（按日期分组）
            var dailyInboundList = _inboundOrderDetailRepository.Db
                .Queryable<Dt_InboundOrderDetail>()
                .Where(x => x.CreateDate >= startDate
                         && x.CreateDate < endDate.AddDays(1))
                .Select(x => new
                {
                    Date = x.CreateDate.ToString("MM-dd"),
                    x.OverInQuantity
                })
                .ToList()
                .GroupBy(x => x.Date)
                .ToDictionary(k => k.Key, g => g.Sum(x => (decimal?)x.OverInQuantity) ?? 0); // 转为字典方便匹配

            // 4. 合并每日数据（确保7天日期完整，无数据补0）
            var dailyInOutBoundList = all7Days.Select(date => new DailyInOutBoundDto
            {
                Date = date,
                DailyOutboundQuantity = dailyOutboundList.ContainsKey(date) ? dailyOutboundList[date] : 0,
                DailyInboundQuantity = dailyInboundList.ContainsKey(date) ? dailyInboundList[date] : 0,

            }).ToList();

            return dailyInOutBoundList;
        }

        public List<SimpleStatisticsDTO> SimpleStatistics()
        {
            DateTime sevenDaysAgo = DateTime.Now.AddDays(-7);

            var stats = _taskHtyRepository
                .QueryData(x => x.TaskStatus == (int)TaskStatusEnum.Finish && x.CreateDate >= sevenDaysAgo)
                .GroupBy(t =>
                    (int)t.TaskType >= 100 && (int)t.TaskType <= 299 ? "出库" :
                    (int)t.TaskType >= 500 && (int)t.TaskType <= 699 ? "入库" : "其他"
                )
                .Where(g => g.Key == "出库" || g.Key == "入库")
                .Select(g => new SimpleStatisticsDTO
                {
                    TaskType = g.Key,
                    Count = g.Count()
                })
                .ToList();

            return stats;
        }

        /// <summary>
        /// 大屏/汇总数据返回DTO（大绿数据汇总）
        /// </summary>
        public class BigGreenDataDto
        {
            /// <summary>
            /// 入库完成数量
            /// </summary>
            public int InboundCount { get; set; }
            /// <summary>
            /// 出库完成数量
            /// </summary>
            public int OutboundCount { get; set; }
            /// <summary>
            /// 总库存数量
            /// </summary>
            public decimal TotalStockQuantity { get; set; }

            /// <summary>
            /// 待出库订单数量（出库中+未开始）
            /// </summary>
            public int UnOutBoundOrderCount { get; set; }

            /// <summary>
            /// 空闲库位数量
            /// </summary>
            public int FreeLocationCount { get; set; }

            /// <summary>
            /// 占用库位数量（已存库）
            /// </summary>
            public int InStockLocationCount { get; set; }

            /// <summary>
            /// 库位利用率（小数形式，如0.85对应85%）
            /// </summary>
            public decimal LocationUtilizationRate { get; set; }

            /// <summary>
            /// 近7日每日出入库明细
            /// </summary>
            public List<DailyInOutBoundDto> DailyInOutBoundList { get; set; } = new List<DailyInOutBoundDto>();

            /// <summary>
            /// 近7日净入库量（入库-出库）
            /// </summary>
            public decimal NetStock7Days { get; set; }

            /// <summary>
            /// 近7日净入库量（入库-出库）
            /// </summary>
            public decimal TotalStockChangeRate { get; set; }

            /// <summary>
            /// 任务列表
            /// </summary>
            public List<Dt_Task> TaskList { get; set; } = new List<Dt_Task>();

            public int InStockPallet { get; set; }

            public int FreeStockPallet { get; set; }

            public List<SimpleStatisticsDTO> CompleteTask { get; set; }

            public NearExpirationDTO NearExpirationList { get; set; }
        }

        /// <summary>
        /// 每日出入库明细DTO
        /// </summary>
        public class DailyInOutBoundDto
        {
            /// <summary>
            /// 日期（格式：yyyy-MM-dd）
            /// </summary>
            public string Date { get; set; }

            /// <summary>
            /// 当日出库总量
            /// </summary>
            public decimal DailyOutboundQuantity { get; set; }

            /// <summary>
            /// 当日入库总量
            /// </summary>
            public decimal DailyInboundQuantity { get; set; }

        }

        public class SimpleStatisticsDTO
        {
            public string TaskType { get; set; }
            public int Count { get; set; }
        }

        public class NearExpirationDTO
        {
            public int DaysToExpiration { get; set; }

            public List<Dt_StockInfoDetail> Details { get; set; }

            public string LocationCode { get; set; }

            public string PalletCode { get; set; }
        }

        ///<summary>
        ///获取近30天要过期的物料
        /// </summary>
        public NearExpirationDTO GetMaterialsNearExpiration()
        {
            // 初始化返回DTO
            var resultDTO = new NearExpirationDTO
            {
                Details = new List<Dt_StockInfoDetail>(),
                LocationCode = string.Empty,
                PalletCode = string.Empty,
                DaysToExpiration = 0 // 初始化天数
            };

            DateTime currentTime = DateTime.Now;
            DateTime thirtyDaysLater = currentTime.AddDays(30);

            // 筛选30天内过期的库存明细
            var nearExpirationList = _stockInfoDetailRepository.Db.Queryable<Dt_StockInfoDetail>()
                .Where(x => (x.ValidDate.Value - x.CreateDate).TotalDays <= 30)
                .ToList();

            // 无符合条件的明细，直接返回
            if (!nearExpirationList.Any())
            {
                return resultDTO;
            }

            
            var firstStockId = nearExpirationList.First().StockId;
           
            var stock = _stockInfoRepository.Db.Queryable<Dt_StockInfo>()
                .First(x => x.Id == firstStockId);

            
            if (stock == null)
            {
                return resultDTO;
            }

            
            resultDTO.LocationCode = stock.LocationCode;
            resultDTO.PalletCode = stock.PalletCode;

           
            int minDaysToExpiration = int.MaxValue; 
            foreach (var detail in nearExpirationList)
            {
                
                TimeSpan totalDaysToExpiration = detail.ValidDate.Value - detail.CreateDate;
                double remainingDays = totalDaysToExpiration.TotalDays;
                int daysToExpiration = (int)Math.Ceiling(Math.Max(0, remainingDays));

               
                if (daysToExpiration < minDaysToExpiration)
                {
                    minDaysToExpiration = daysToExpiration;
                }

                
                resultDTO.Details.Add(detail);
            }

           
            resultDTO.DaysToExpiration = minDaysToExpiration;

            return resultDTO;
        }
    }
}