using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using WIDESEA_Common.LocationEnum;
using WIDESEA_Common.OrderEnum;
using WIDESEA_Common.StockEnum;
using WIDESEA_Core;
using WIDESEA_Core.BaseRepository;
using WIDESEA_Core.BaseServices;
using WIDESEA_DTO.Outbound;
using WIDESEA_IBasicService;
using WIDESEA_IOutboundService;
using WIDESEA_IStockService;
using WIDESEA_Model.Models;

namespace WIDESEA_OutboundService
{
    /// <summary>
    ///   
    /// </summary>
    public class OutboundPickingService : ServiceBase<Dt_PickingRecord, IRepository<Dt_PickingRecord>>, IOutboundPickingService
    {
        private readonly IUnitOfWorkManage _unitOfWorkManage;
        public IRepository<Dt_PickingRecord> Repository => BaseDal;

        private readonly IStockInfoService _stockInfoService;
        private readonly IStockService _stockService;
        private readonly IOutStockLockInfoService _outStockLockInfoService;
        private readonly IStockInfoDetailService _stockInfoDetailService;
        private readonly ILocationInfoService _locationInfoService;
        private readonly IOutboundOrderDetailService _outboundOrderDetailService;
        private readonly ISplitPackageService _splitPackageService;
 

        public OutboundPickingService(IRepository<Dt_PickingRecord> BaseDal, IUnitOfWorkManage unitOfWorkManage, IStockInfoService stockInfoService, IStockService stockService, IOutStockLockInfoService outStockLockInfoService, IStockInfoDetailService stockInfoDetailService, ILocationInfoService locationInfoService, IOutboundOrderDetailService outboundOrderDetailService, ISplitPackageService splitPackageService) : base(BaseDal)
        {
            _unitOfWorkManage = unitOfWorkManage;
            _stockInfoService = stockInfoService;
            _stockService = stockService;
            _outStockLockInfoService = outStockLockInfoService;
            _stockInfoDetailService = stockInfoDetailService;
            _locationInfoService = locationInfoService;
            _outboundOrderDetailService = outboundOrderDetailService;
            _splitPackageService = splitPackageService;
        }

        /// <summary>
        /// 扫码拣选确认 - 简化版本
        /// 只处理实际拣选的库存扣减
        /// </summary>
        public async Task<WebResponseContent> ConfirmPicking(PickingConfirmRequest request)
        {
            try
            {
                _unitOfWorkManage.BeginTran();

                // 1. 验证条码有效性
                var stockDetail = await _stockInfoDetailService.Db.Queryable<Dt_StockInfoDetail>()
                    .Where(x => x.Barcode == request.Barcode && x.MaterielCode == request.MaterielCode)
                    .FirstAsync();

                if (stockDetail == null)
                    return WebResponseContent.Instance.Error("无效的条码或物料编码");

                // 2. 检查库存可用数量
                decimal availableQuantity = stockDetail.StockQuantity - stockDetail.OutboundQuantity;
                if (request.PickQuantity > availableQuantity)
                    return WebResponseContent.Instance.Error($"拣选数量超过可用库存，可用数量：{availableQuantity}");

                // 3. 查找相关的出库锁定信息（支持拆包后的新条码）
                var lockInfo = await FindLockInfoByBarcode(request.OrderDetailId, request.Barcode, request.MaterielCode);

                if (lockInfo == null)
                    return WebResponseContent.Instance.Error("未找到相关的出库锁定信息");

                // 4. 检查锁定数量
                decimal remainingLockQuantity = lockInfo.AssignQuantity - lockInfo.PickedQty;
                if (request.PickQuantity > remainingLockQuantity)
                    return WebResponseContent.Instance.Error($"拣选数量超过锁定数量，剩余可拣选：{remainingLockQuantity}");

                // 5. 更新锁定信息的已拣选数量
                lockInfo.PickedQty += request.PickQuantity;
                await _outStockLockInfoService.Db.Updateable(lockInfo).ExecuteCommandAsync();

                // 6. 更新库存出库数量 - 实际减少库存
                stockDetail.OutboundQuantity += request.PickQuantity;
                await _stockInfoService.Db.Updateable(stockDetail).ExecuteCommandAsync();

                // 7. 更新出库单明细
                var orderDetail = await _outboundOrderDetailService.Db.Queryable<Dt_OutboundOrderDetail>()
                    .Where(x => x.Id == request.OrderDetailId)
                    .FirstAsync();

                orderDetail.OverOutQuantity += request.PickQuantity;
                orderDetail.LockQuantity -= request.PickQuantity;

                // 检查是否完成出库
                if (Math.Abs(orderDetail.OverOutQuantity - orderDetail.OrderQuantity) < 0.001m)
                {
                    orderDetail.OrderDetailStatus = (int)OrderDetailStatusEnum.Over;
                    orderDetail.LockQuantity = 0;

                    // 更新相关的锁定信息状态为已出库
                    var relatedLockInfos = await _outStockLockInfoService.Db.Queryable<Dt_OutStockLockInfo>()
                        .Where(x => x.OrderDetailId == request.OrderDetailId &&
                                   x.Status == (int)OutLockStockStatusEnum.出库中)
                        .ToListAsync();

                    foreach (var relatedLock in relatedLockInfos)
                    {
                        relatedLock.Status = (int)OutLockStockStatusEnum.已出库;
                    }
                    await _outStockLockInfoService.Db.Updateable(relatedLockInfos).ExecuteCommandAsync();
                }

                await _outboundOrderDetailService.Db.Updateable(orderDetail).ExecuteCommandAsync();

                // 8. 记录拣选历史
                var pickHistory = new Dt_PickingRecord
                {
                    OrderDetailId = request.OrderDetailId,
                    Barcode = request.Barcode,
                    PickQuantity = request.PickQuantity,
                    PickTime = DateTime.Now,

                    LocationCode = request.LocationCode,
                    StockId = stockDetail.StockId
                };
                await Db.Insertable(pickHistory).ExecuteCommandAsync();

                _unitOfWorkManage.CommitTran();

                return WebResponseContent.Instance.OK("拣选确认成功");
            }
            catch (Exception ex)
            {
                _unitOfWorkManage.RollbackTran();
                return WebResponseContent.Instance.Error($"拣选确认失败: {ex.Message}");
            }
        }

        /// <summary>
        /// 根据条码查找锁定信息
        /// </summary>
        private async Task<Dt_OutStockLockInfo> FindLockInfoByBarcode(int orderDetailId, string barcode, string materielCode)
        {
            return await _outStockLockInfoService.Db.Queryable<Dt_OutStockLockInfo>()
                .Where(x => x.OrderDetailId == orderDetailId &&
                           x.MaterielCode == materielCode &&
                           x.CurrentBarcode == barcode &&
                           x.Status == (int)OutLockStockStatusEnum.出库中 &&
                           x.AssignQuantity > x.PickedQty)
                .FirstAsync();
        }

        /// <summary>
        /// 获取拣选历史
        /// </summary>
        public async Task<List<Dt_PickingRecord>> GetPickingHistory(int orderId)
        {
            // 通过出库单ID查询相关的拣选历史
            // 注意：Dt_PickingRecord 中没有直接存储OrderId，需要通过出库单明细关联
            var detailIds = await _outboundOrderDetailService.Db.Queryable<Dt_OutboundOrderDetail>()
                .Where(d => d.OrderId == orderId)
                .Select(d => d.Id)
                .ToListAsync();

            return await Db.Queryable<Dt_PickingRecord>()
                .Where(p => detailIds.Contains(p.OrderDetailId))
                .OrderByDescending(p => p.PickTime)
                .ToListAsync();
        }

        /// <summary>
        /// 撤销拣选
        /// </summary>
        public async Task<WebResponseContent> CancelPicking(CancelPickingRequest request)
        {
            // 实现撤销拣选的逻辑，需要：
            // 1. 恢复库存出库数量
            // 2. 恢复锁定信息的已拣选数量
            // 3. 恢复出库单明细的已出数量和锁定数量
            // 4. 删除或标记拣选历史记录
            // 注意：这里需要事务处理
            try
            {
                _unitOfWorkManage.BeginTran();

                var pickHistory = await Db.Queryable<Dt_PickingRecord>()
                    .Where(x => x.Id == request.PickingHistoryId)
                    .FirstAsync();

                if (pickHistory == null)
                    return WebResponseContent.Instance.Error("未找到拣选记录");

                // 恢复库存
                var stockDetail = await _stockInfoService.Db.Queryable<Dt_StockInfoDetail>()
                    .Where(x => x.Barcode == pickHistory.Barcode && x.StockId == pickHistory.StockId)
                    .FirstAsync();
                if (stockDetail != null)
                {
                    stockDetail.OutboundQuantity -= pickHistory.PickQuantity;
                    await _stockInfoService.Db.Updateable(stockDetail).ExecuteCommandAsync();
                }
                // 恢复锁定信息
                var lockInfo = await _outStockLockInfoService.Db.Queryable<Dt_OutStockLockInfo>()
                    .Where(x => x.OrderDetailId == pickHistory.OrderDetailId && x.StockId == pickHistory.StockId)
                    .FirstAsync();
                lockInfo.PickedQty -= pickHistory.PickQuantity;
                await _outStockLockInfoService.Db.Updateable(lockInfo).ExecuteCommandAsync();

                // 恢复出库单明细
                var orderDetail = await _outboundOrderDetailService.Db.Queryable<Dt_OutboundOrderDetail>()
                    .Where(x => x.Id == pickHistory.OrderDetailId)
                    .FirstAsync();
                orderDetail.OverOutQuantity -= pickHistory.PickQuantity;
                orderDetail.LockQuantity += pickHistory.PickQuantity;
                if (orderDetail.OverOutQuantity < orderDetail.OrderQuantity)
                {
                    orderDetail.OrderDetailStatus = orderDetail.LockQuantity > 0 ?
                        (int)OrderDetailStatusEnum.Outbound : (int)OrderDetailStatusEnum.AssignOverPartial;
                }
                await _outboundOrderDetailService.Db.Updateable(orderDetail).ExecuteCommandAsync();

                // 删除拣选历史记录
                await Db.Deleteable<Dt_PickingRecord>().Where(x => x.Id == request.PickingHistoryId).ExecuteCommandAsync();

                _unitOfWorkManage.CommitTran();
                return WebResponseContent.Instance.OK("撤销成功");
            }
            catch (Exception ex)
            {
                _unitOfWorkManage.RollbackTran();
                return WebResponseContent.Instance.Error($"撤销失败: {ex.Message}");
            }
        }

        /// <summary>
        /// 获取托盘的出库状态信息
        /// </summary>
        public async Task<WebResponseContent> GetPalletOutboundStatus(string palletCode)
        {
            // 获取托盘的锁定信息
            var lockInfos = await _outStockLockInfoService.Db.Queryable<Dt_OutStockLockInfo>()
                .Where(x => x.PalletCode == palletCode)
                .ToListAsync();

            // 获取托盘库存信息
            var stockInfo = await _stockInfoService.Db.Queryable<Dt_StockInfo>()
                .Includes(x => x.Details)
                .Where(x => x.PalletCode == palletCode)
                .FirstAsync();

            if (stockInfo == null)
                return WebResponseContent.Instance.Error("未找到托盘信息");

            // 计算各种数量
            var totalStockQuantity = stockInfo.Details.Sum(x => x.StockQuantity);
            var totalOutboundQuantity = stockInfo.Details.Sum(x => x.OutboundQuantity);
            var totalLockedQuantity = lockInfos.Where(x => x.Status == (int)OutLockStockStatusEnum.出库中)
                .Sum(x => x.AssignQuantity - x.PickedQty);
            var totalPickedQuantity = lockInfos.Sum(x => x.PickedQty);

            var result = new
            {
                PalletCode = palletCode,
                LocationCode = stockInfo.LocationCode,
                StockStatus = stockInfo.StockStatus,
                TotalStockQuantity = totalStockQuantity,
                TotalOutboundQuantity = totalOutboundQuantity,
                TotalLockedQuantity = totalLockedQuantity,
                TotalPickedQuantity = totalPickedQuantity,
                AvailableQuantity = totalStockQuantity - totalOutboundQuantity,
                LockInfos = lockInfos.Select(x => new
                {
                    x.Id,
                    x.MaterielCode,
                    x.OrderDetailId,
                    x.AssignQuantity,
                    x.PickedQty,
                    x.Status,
                    x.CurrentBarcode,
                    x.IsSplitted
                }).ToList(),
                StockDetails = stockInfo.Details.Select(x => new
                {
                    x.Barcode,
                    x.MaterielCode,
                    StockQuantity = x.StockQuantity,
                    OutboundQuantity = x.OutboundQuantity,
                    AvailableQuantity = x.StockQuantity - x.OutboundQuantity
                }).ToList()
            };

            return WebResponseContent.Instance.OK(null, result);
        }

        /// <summary>
        /// 直接出库 - 整个托盘出库，清空库存
        /// </summary>
        public async Task<WebResponseContent> DirectOutbound(DirectOutboundRequest request)
        {
            try
            {
                _unitOfWorkManage.BeginTran();

                // 1. 获取托盘库存信息
                var stockInfo = await _stockInfoService.Db.Queryable<Dt_StockInfo>()
                    .Includes(x => x.Details)
                    .Where(x => x.PalletCode == request.PalletCode)
                    .FirstAsync();

                if (stockInfo == null)
                    return WebResponseContent.Instance.Error("未找到托盘库存信息");

                // 2. 获取相关的出库锁定信息
                var lockInfos = await _outStockLockInfoService.Db.Queryable<Dt_OutStockLockInfo>()
                    .Where(x => x.PalletCode == request.PalletCode &&
                               x.Status == (int)OutLockStockStatusEnum.出库中)
                    .ToListAsync();

                // 3. 整个托盘出库 - 设置出库数量等于库存数量
                foreach (var detail in stockInfo.Details)
                {
                    decimal outboundQuantity = detail.StockQuantity - detail.OutboundQuantity;
                    detail.OutboundQuantity = detail.StockQuantity; // 全部出库
                    await _stockInfoDetailService.Db.Updateable(detail).ExecuteCommandAsync();
                }

                // 4. 更新出库锁定信息
                foreach (var lockInfo in lockInfos)
                {
                    decimal unpicked = lockInfo.AssignQuantity - lockInfo.PickedQty;
                    lockInfo.PickedQty += unpicked; // 标记为全部拣选
                    lockInfo.Status = (int)OutLockStockStatusEnum.已出库;
                    await _outStockLockInfoService.Db.Updateable(lockInfo).ExecuteCommandAsync();

                    // 更新出库单明细
                    var orderDetail = await _outboundOrderDetailService.Db.Queryable<Dt_OutboundOrderDetail>()
                        .Where(x => x.Id == lockInfo.OrderDetailId)
                        .FirstAsync();
                    orderDetail.OverOutQuantity += unpicked;
                    orderDetail.LockQuantity -= unpicked;
                    orderDetail.OrderDetailStatus = (int)OrderDetailStatusEnum.Over;
                    orderDetail.LockQuantity = 0;

                    await _outboundOrderDetailService.Db.Updateable(orderDetail).ExecuteCommandAsync();
                }

                // 5. 更新拆包记录状态
                var lockInfoIds = lockInfos.Select(x => x.Id).ToList();
                var splitRecords = await _splitPackageService.Db.Queryable<Dt_SplitPackageRecord>()
                    .Where(x => lockInfoIds.Contains(x.OutStockLockInfoId) &&
                               x.Status == (int)SplitPackageStatusEnum.已拆包)
                    .ToListAsync();

                foreach (var record in splitRecords)
                {
                    record.Status = (int)SplitPackageStatusEnum.已拣选;
                    await _splitPackageService.Db.Updateable(record).ExecuteCommandAsync();
                }

                // 6. 清空货位
                var location = await _locationInfoService.Db.Queryable<Dt_LocationInfo>()
                    .Where(x => x.LocationCode == stockInfo.LocationCode)
                    .FirstAsync();
                if (location != null)
                {
                    location.LocationStatus = (int)LocationStatusEnum.Free;
                    await _locationInfoService.Db.Updateable(location).ExecuteCommandAsync();
                }

                _unitOfWorkManage.CommitTran();
                return WebResponseContent.Instance.OK("直接出库成功");
            }
            catch (Exception ex)
            {
                _unitOfWorkManage.RollbackTran();
                return WebResponseContent.Instance.Error($"直接出库失败: {ex.Message}");
            }
        }
    }

}