using AutoMapper;
using SqlSugar;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using WIDESEA_Core;
using WIDESEA_Core.BaseRepository;
using WIDESEA_Core.BaseServices;
using WIDESEA_Core.Enums;
using WIDESEA_Core.Helper;
using WIDESEA_Core.Utilities;
using WIDESEA_DTO.Basic;
using WIDESEA_IBasicRepository;
using WIDESEA_IRecordService;
using WIDESEA_IBasicService;
using WIDESEA_Model.Models;
using WIDESEA_Common.CommonEnum;
using WIDESEA_Common.LocationEnum;

namespace WIDESEA_BasicService
{
    public class LocationInfoService_Old
    {
        private readonly ILocationInfoRepository Repository;

        public LocationInfoService_Old(ILocationInfoRepository repository)
        {
            Repository = repository;
        }

        double weightValue = 0.5;

        private readonly static object _locker = new object();
        static List<LocationCache> locationCaches = new List<LocationCache>();

        /// <summary>
        /// 货位分配逻辑
        /// </summary>
        /// <param name="roadwayNo">巷道号</param>
        /// <param name="palletType">托盘类型</param>
        /// <returns></returns>
        public Dt_LocationInfo? AssignLocation(string roadwayNo, PalletTypeEnum palletType)
        {
            lock (_locker)
            {
                List<LocationCache> removeItems = locationCaches.Where(x => (DateTime.Now - x.DateTime).TotalMinutes > 5).ToList();
                int count = removeItems.Count;
                for (int i = 0; i < count; i++)
                {
                    locationCaches.Remove(removeItems[i]);
                }

                List<string> lockLocationCodes = locationCaches.Select(x => x.LocationCode).ToList();

                List<Dt_LocationInfo> locationInfos = Repository.QueryData(x => x.RoadwayNo == roadwayNo);

                //已定义货位类型的货位
                List<Dt_LocationInfo> definedTypeLocations = locationInfos.Where(x => x.LocationType == palletType.ObjToInt()).ToList();

                //未定义类型的空货位
                List<Dt_LocationInfo> undefinedTypeEmptyLocations = locationInfos.Where(x => (x.EnableStatus == EnableStatusEnum.Normal.ObjToInt() || x.EnableStatus == EnableStatusEnum.OnlyIn.ObjToInt()) && x.LocationStatus == LocationStatusEnum.Free.ObjToInt() && x.LocationType == LocationTypeEnum.Undefined.ObjToInt() && !lockLocationCodes.Contains(x.LocationCode)).OrderByDescending(x => x.Depth).ThenBy(x => x.Layer).ThenBy(x => x.Row).ThenBy(x => x.Column).ToList();

                if (locationInfos.Count * weightValue >= definedTypeLocations.Count && undefinedTypeEmptyLocations.Count > 0)//如果已定义类型货位未超过比例，且有未定义类型的货位
                {
                    if (palletType == PalletTypeEnum.LargePallet)
                    {
                        undefinedTypeEmptyLocations = undefinedTypeEmptyLocations.Where(x => x.Column % 2 == 1).ToList();
                    }
                    for (int i = 0; i < undefinedTypeEmptyLocations.Count; i++)
                    {
                        Dt_LocationInfo undefinedTypeEmptyLocation = undefinedTypeEmptyLocations[i];
                        Dt_LocationInfo? locationInfo = GetUsableLocation(locationInfos, undefinedTypeEmptyLocation, palletType);
                        if (locationInfo != null)
                        {
                            //UpdateLocationStatus(locationInfo.LocationCode, palletType, LocationStatusEnum.Lock); 
                            locationCaches.Add(new LocationCache { LocationCode = locationInfo.LocationCode, DateTime = DateTime.Now });
                            return locationInfo;
                        }
                    }
                }
                else
                {
                    List<Dt_LocationInfo> definedTypeEmptyLocations = locationInfos.Where(x => (x.EnableStatus == EnableStatusEnum.Normal.ObjToInt() || x.EnableStatus == EnableStatusEnum.OnlyIn.ObjToInt()) && x.LocationStatus == LocationStatusEnum.Free.ObjToInt() && x.LocationType == palletType.ObjToInt() && !lockLocationCodes.Contains(x.LocationCode)).OrderByDescending(x => x.Depth).ThenBy(x => x.Layer).ThenBy(x => x.Row).ThenBy(x => x.Column).ToList();

                    for (int i = 0; i < definedTypeEmptyLocations.Count; i++)
                    {
                        Dt_LocationInfo definedTypeEmptyLocation = definedTypeEmptyLocations[i];
                        Dt_LocationInfo? locationInfo = GetUsableLocation(locationInfos, definedTypeEmptyLocation, palletType);
                        if (locationInfo != null)
                        {
                            //UpdateLocationStatus(locationInfo.LocationCode, palletType, LocationStatusEnum.Lock);
                            locationCaches.Add(new LocationCache { LocationCode = locationInfo.LocationCode, DateTime = DateTime.Now });
                            return locationInfo;
                        }
                    }
                }
                return null;
            }
        }

        public Dt_LocationInfo? GetUsableLocation(List<Dt_LocationInfo> locationInfos, Dt_LocationInfo undefinedTypeEmptyLocation, PalletTypeEnum palletType)
        {
            switch (palletType)
            {
                case PalletTypeEnum.LargePallet:
                    {
                        Dt_LocationInfo? nearLocation = locationInfos.FirstOrDefault(x => x.Row == undefinedTypeEmptyLocation.Row && x.Layer == undefinedTypeEmptyLocation.Layer && x.Depth == undefinedTypeEmptyLocation.Depth && x.Column == undefinedTypeEmptyLocation.Column + 1);
                        if (nearLocation != null && nearLocation.LocationStatus == LocationStatusEnum.Free.ObjToInt() && DepthLocationIsEmpty(locationInfos, undefinedTypeEmptyLocation) != null)
                        {
                            Dt_LocationInfo? locationInfo = DepthLocationIsEmpty(locationInfos, undefinedTypeEmptyLocation);
                            if (locationInfo != null)
                            {
                                return locationInfo;
                            }
                        }
                    }
                    break;
                case PalletTypeEnum.SmallPallet:
                    {
                        Dt_LocationInfo? locationInfo = DepthLocationIsEmpty(locationInfos, undefinedTypeEmptyLocation);
                        if (locationInfo != null)
                        {
                            return locationInfo;
                        }
                    }
                    break;
            }
            return null;
        }

        private Dt_LocationInfo? DepthLocationIsEmpty(List<Dt_LocationInfo> locationInfos, Dt_LocationInfo undefinedTypeEmptyLocation)
        {
            int maxDepth = locationInfos.Max(x => x.Depth);
            if (undefinedTypeEmptyLocation.Depth == 1 && maxDepth == 1)
            {
                return undefinedTypeEmptyLocation;
            }
            else
            {
                List<Dt_LocationInfo> locations = GetGroupLocations(locationInfos, undefinedTypeEmptyLocation);

                List<Dt_LocationInfo> moreDepth = locations.Where(x => x.Depth > undefinedTypeEmptyLocation.Depth).ToList();
                bool moreDepthFlag = moreDepth.FirstOrDefault(x => x.LocationStatus != LocationStatusEnum.InStock.ObjToInt()) == null;//查询大于当前货位深度的集合里是否有状态不为有货的货位，如果是true，则表示深货位有未被使用的情况

                List<Dt_LocationInfo> littleDepth = locations.Where(x => x.Depth <= undefinedTypeEmptyLocation.Depth).ToList();
                bool littleDepthFlag = littleDepth.FirstOrDefault(x => x.LocationStatus != LocationStatusEnum.Free.ObjToInt() && x.EnableStatus != EnableStatusEnum.OnlyIn.ObjToInt() && x.EnableStatus != EnableStatusEnum.Normal.ObjToInt()) == null; //查询小于当前货位深度的集合里是否有状态不为空，且禁用状态不为禁用以及只入的货位，如果是true，则表示浅货位被使用或者被禁用的情况

                if (moreDepthFlag && littleDepthFlag)
                {
                    return undefinedTypeEmptyLocation;
                }
            }
            return null;
        }

        /// <summary>
        /// 修改货位状态及类型
        /// </summary>
        /// <param name="locationCode">货位编号</param>
        /// <param name="palletType">托盘类型</param>
        /// <param name="locationStatus">货位状态</param>
        public void UpdateLocationStatus(string locationCode, PalletTypeEnum palletType, LocationStatusEnum locationStatus)
        {
            Dt_LocationInfo location = Repository.QueryFirst(x => x.LocationCode == locationCode);
            List<Dt_LocationInfo> locationInfos = Repository.QueryData(x => x.RoadwayNo == location.RoadwayNo);

            List<Dt_LocationInfo> locations = GetGroupLocations(locationInfos, location);
            if (locationInfos.Max(x => x.Depth) < 3)
            {
                for (int i = 0; i < locations.Count; i++)
                {
                    locations[i].LocationStatus = locationStatus.ObjToInt();
                    locations[i].LocationType = palletType.ObjToInt();
                }

                Dt_LocationInfo? nearLocation = locationInfos.FirstOrDefault(x => x.Row == location.Row && x.Layer == location.Layer && x.Depth == location.Depth && x.Column == location.Column + 1);
                if (nearLocation != null)
                {
                    List<Dt_LocationInfo> nearLocations = GetGroupLocations(locationInfos, nearLocation);
                    for (int i = 0; i < nearLocations.Count; i++)
                    {
                        nearLocations[i].LocationType = palletType.ObjToInt();
                        if (palletType == PalletTypeEnum.LargePallet)
                        {
                            nearLocations[i].LocationStatus = locationStatus.ObjToInt();
                        }
                    }
                    locations.AddRange(nearLocations);
                }
            }
            else
            {
                for (int i = 0; i < locations.Count; i++)
                {
                    locations[i].LocationStatus = locationStatus.ObjToInt();
                    locations[i].LocationType = palletType.ObjToInt();
                }
            }
            Repository.UpdateData(locations);
        }

        /// <summary>
        /// 修改货位状态及类型
        /// </summary>
        /// <param name="location">货位对象</param>
        /// <param name="palletType">托盘类型</param>
        /// <param name="locationStatus">货位状态</param>
        public void UpdateLocationStatus(Dt_LocationInfo location, PalletTypeEnum palletType, LocationStatusEnum locationStatus)
        {
            List<Dt_LocationInfo> locationInfos = Repository.QueryData(x => x.RoadwayNo == location.RoadwayNo);

            List<Dt_LocationInfo> locations = GetGroupLocations(locationInfos, location);
            if (locationInfos.Max(x => x.Depth) < 3)
            {
                for (int i = 0; i < locations.Count; i++)
                {
                    locations[i].LocationStatus = locationStatus.ObjToInt();
                    locations[i].LocationType = palletType.ObjToInt();
                }

                Dt_LocationInfo? nearLocation = locationInfos.FirstOrDefault(x => x.Row == location.Row && x.Layer == location.Layer && x.Depth == location.Depth && x.Column == location.Column + 1);
                if (nearLocation != null)
                {
                    List<Dt_LocationInfo> nearLocations = GetGroupLocations(locationInfos, nearLocation);
                    for (int i = 0; i < nearLocations.Count; i++)
                    {
                        nearLocations[i].LocationType = palletType.ObjToInt();
                        if (palletType == PalletTypeEnum.LargePallet)
                        {
                            nearLocations[i].LocationStatus = locationStatus.ObjToInt();
                        }
                    }
                    locations.AddRange(nearLocations);
                }
            }
            else
            {
                for (int i = 0; i < locations.Count; i++)
                {
                    locations[i].LocationStatus = locationStatus.ObjToInt();
                    locations[i].LocationType = palletType.ObjToInt();
                }
            }
            Repository.UpdateData(locations);
        }

        private List<Dt_LocationInfo> GetGroupLocations(List<Dt_LocationInfo> locationInfos, Dt_LocationInfo location)
        {
            List<Dt_LocationInfo> groupLocations = new List<Dt_LocationInfo>() { location };
            int maxDepth = locationInfos.Max(x => x.Depth);
            for (int j = location.Depth + 1; j <= maxDepth; j++)
            {
                Dt_LocationInfo? locationInfo = locationInfos.FirstOrDefault(x => x.Depth == j && x.Column == location.Column && x.Layer == location.Layer);
                if (locationInfo != null)
                {
                    groupLocations.Add(locationInfo);
                }
            }

            for (int j = location.Depth - 1; j >= 1; j--)
            {
                Dt_LocationInfo? locationInfo = locationInfos.FirstOrDefault(x => x.Depth == j && x.Column == location.Column && x.Layer == location.Layer);
                if (locationInfo != null)
                {
                    groupLocations.Add(locationInfo);
                }
            }
            return groupLocations;
        }
    }

    public class LocationCache
    {
        public string LocationCode { get; set; }

        public DateTime DateTime { get; set; }
    }
}