using MES.Service.DB;
using MES.Service.Dto.webApi;
using MES.Service.Modes;
using System.Linq;
using MES.Service.util;

namespace MES.Service.service.BasicData;

/// <summary>
/// 送货单条码业务管理器（对应TBL_BARCODE_INFORMATION表操作）
/// </summary>
public class DeliveryBarcodeManager : Repository<BarcodeInformation>
{
    /// <summary>
    /// 单个送货单条码信息保存（支持新增/删除，按Type区分操作类型）
    /// </summary>
    /// <param name="barcodeDto">送货单条码DTO（含操作类型Type）</param>
    /// <returns>操作是否成功</returns>
    public bool Save(DeliveryBarcodeInfo barcodeDto)
    {
        if (barcodeDto == null)
            throw new ArgumentNullException(nameof(barcodeDto), "条码DTO不能为空");

        // DTO转实体（映射字段关系）
        var barcodeEntity = ConvertDtoToEntity(barcodeDto);

        try
        {
            // 按Type区分操作类型（0=新增，1=删除）
            switch (barcodeDto.Type)
            {
                case "1":
                    return InsertBarcode(barcodeEntity);
                case "2":
                    return DeleteBarcode(barcodeEntity.Id);
                default:
                    throw new ArgumentOutOfRangeException( nameof(barcodeDto.Type), barcodeDto.Type, "条码操作类型错误：仅支持 0（新增）、1（删除）");
            }
        }
        catch (Exception ex)
        {
            throw new ApplicationException($"单个条码操作失败（送货单号：{barcodeDto.DeliveryNo}）：{ex.Message}", ex);
        }
    }

    /// <summary>
    /// 批量送货单条码信息保存（按Type分组处理，统一异常捕获）
    /// </summary>
    /// <param name="barcodeDtoList">送货单条码DTO列表</param>
    /// <returns>批量操作是否全部成功</returns>
    public bool SaveList(List<DeliveryBarcodeInfo> barcodeDtoList)
    {
        if (barcodeDtoList == null || !barcodeDtoList.Any())
        {
            throw new ArgumentException("批量操作的条码列表不能为空");
        }

        try
        {
            // 1. 创建强类型的实体与类型组合列表（解决dynamic转换问题）
            var entityTypePairs = new List<EntityTypePair>();
            foreach (var dto in barcodeDtoList)
            {
                entityTypePairs.Add(new EntityTypePair
                {
                    Entity = ConvertDtoToEntity(dto),
                    Type = dto.Type
                });
            }

            // 2. 按操作类型Type分组（使用强类型避免类型推断问题）
            var typeGroupDict = entityTypePairs.GroupBy(pair => pair.Type).ToDictionary(group => group.Key,group => group.Select(pair => pair.Entity).ToList());

            // 3. 存储各组操作结果
            var groupResultList = new List<bool>();

            foreach (var (type, entityGroup) in typeGroupDict)
            {
                switch (type)
                {
                    case "1":
                        groupResultList.Add(InsertBarcodeBatch(entityGroup));
                        break;
                    case "2":
                        groupResultList.Add(DeleteBarcodeBatch(entityGroup.Select(e => e.Id).ToArray()));
                        break;
                    default:
                        throw new ArgumentOutOfRangeException(nameof(type),type,"批量操作中存在非法Type：仅支持 1（新增）、2（删除）");
                }
            }

            // 4. 所有分组操作均成功才算批量成功
            if (groupResultList.All(result => result))
            {
                return true;
            }

            throw new NotImplementedException("批量条码操作部分失败，具体请查看日志");
        }
        catch (Exception ex)
        {
            throw new ApplicationException($"批量条码操作失败（总条数：{barcodeDtoList.Count}）：{ex.Message}", ex);
        }
    }

    /// <summary>
    /// 根据送货单号删除条码数据
    /// </summary>
    /// <param name="deliveryNo">送货单号（不能为空/空字符串）</param>
    /// <returns>是否删除成功（true=至少删除1条，false=未找到对应数据）</returns>
    public bool DeleteByDeliveryNo(string deliveryNo)
    {
        // 1. 校验参数：送货单号不能为空
        if (string.IsNullOrWhiteSpace(deliveryNo))
        {
            throw new ArgumentException("送货单号 DeliveryNo 不能为空或空格", nameof(deliveryNo));
        }
        try
        {
            // 2. 执行删除：根据 DeliveryNo 匹配表中数据（对应实体的 DeliveryNo 字段）
            int deletedCount = Db.Deleteable<BarcodeInformation>()
                .Where(barcode => barcode.DeliveryNo == deliveryNo) // 表字段与送货单号匹配
                .ExecuteCommand(); // 返回受影响的行数

            // 3. 判断结果：至少删除1条则视为成功，否则抛出“未找到数据”异常
            if (deletedCount > 0)
            {
                return true;
            }
            throw new KeyNotFoundException($"未找到送货单号为「{deliveryNo}」的条码数据，删除操作未执行");
        }
        catch (Exception ex)
        {
            // 4. 包装业务异常，补充上下文信息
            throw new ApplicationException($"根据送货单号删除条码数据失败（DeliveryNo：{deliveryNo}）：{ex.Message}", ex);
        }
    }

    /// <summary>
    /// 批量按送货单号删除条码数据（接收数组项列表）
    /// </summary>
    /// <param name="deliveryNoItems">包含DeliveryNo的对象列表</param>
    /// <returns>批量删除结果</returns>
    public BatchDeleteResult DeleteListByDeliveryNo(List<DeleteByDeliveryNoRequest> deliveryNoItems)
    {
        // 1. 参数校验与处理（从控制器移过来的逻辑）
        if (deliveryNoItems == null || !deliveryNoItems.Any())
        {
            throw new ArgumentException("送货单号列表不能为空", nameof(deliveryNoItems));
        }
        // 提取并验证送货单号列表
        var deliveryNoList = deliveryNoItems
            .Select(item => item.DeliveryNo) // 从对象中提取DeliveryNo字段
            .Where(no => !string.IsNullOrWhiteSpace(no)) // 过滤空值/空格
            .Distinct() // 去重，避免重复删除
            .ToList();

        // 判断是否有有效单号
        if (!deliveryNoList.Any())
        {
            throw new ArgumentException("请求中没有有效的送货单号（均为空或空格）");
        }
        try
        {
            // 2. 查询数据库中存在的送货单号
            var existingNos = Db.Queryable<BarcodeInformation>().Where(barcode => deliveryNoList.Contains(barcode.DeliveryNo)).Select(barcode => barcode.DeliveryNo).Distinct().ToList();

            // 3. 执行批量删除
            int totalDeleted = Db.Deleteable<BarcodeInformation>().Where(barcode => deliveryNoList.Contains(barcode.DeliveryNo)).ExecuteCommand();

            // 4. 返回结果
            return new BatchDeleteResult
            {
                TotalRequested = deliveryNoList.Count,
                TotalDeleted = totalDeleted,
                DeletedNos = existingNos,
                NotFoundNos = deliveryNoList.Except(existingNos).ToList()
            };
        }
        catch (Exception ex)
        {
            throw new ApplicationException($"批量删除失败（共{deliveryNoList.Count}个单号）：{ex.Message}",ex);
        }
    }

    /// <summary>
    /// 按送货单号+行内码联合删除条码数据
    /// </summary>
    /// <param name="deliveryNo">送货单号</param>
    /// <param name="lineNo">送货单行内码</param>
    /// <returns>是否删除成功（true=至少删除1条，false=未找到对应数据）</returns>
    public bool DeleteByDeliveryItem(string deliveryNo, string lineNo)
    {
        // 1. 双参数校验：避免空值/空字符串
        if (string.IsNullOrWhiteSpace(deliveryNo))
        {
            throw new ArgumentException("送货单号 DeliveryNo 不能为空或空格", nameof(deliveryNo));
        }
        if (string.IsNullOrWhiteSpace(lineNo))
        {
            throw new ArgumentException("送货单行内码 LineNo 不能为空或空格", nameof(lineNo));
        }

        try
        {
            // 2. 联合条件删除：匹配 DeliveryNo（送货单号）和 DnLines（行内码，实体字段对应表的 dnLines 列）
            int deletedCount = Db.Deleteable<BarcodeInformation>().Where(barcode =>barcode.DeliveryNo == deliveryNo && barcode.DnLines == lineNo) // 匹配行内码（实体 DnLines 对应表 dnLines 字段）
                .ExecuteCommand(); // 返回受影响的行数

            // 3. 结果判断：有数据被删除则成功，否则抛“未找到数据”异常
            if (deletedCount > 0)
            {
                return true;
            }
            throw new KeyNotFoundException($"未找到送货单号「{deliveryNo}」且行内码「{lineNo}」对应的条码数据，删除操作未执行");
        }
        catch (Exception ex)
        {
            // 4. 包装异常：补充联合条件上下文，便于定位问题
            throw new ApplicationException($"按送货单号+行内码删除条码数据失败（DeliveryNo：{deliveryNo}，LineNo：{lineNo}）：{ex.Message}",ex);
        }
    }

    /// <summary>
    /// 批量按送货单号+行内码删除条码数据
    /// </summary>
    /// <param name="deliveryItems">包含DeliveryNo和LineNo的对象列表</param>
    /// <returns>批量删除结果</returns>
    public BatchDeleteResult DeleteListByDeliveryItem(List<DeleteByDeliveryItemRequest> deliveryItems)
    {
        // 1. 参数校验与处理
        if (deliveryItems == null || !deliveryItems.Any())
        {
            throw new ArgumentException("送货单行列表不能为空", nameof(deliveryItems));
        }
        // 提取并验证送货单号+行内码组合
        var validItems = deliveryItems.Where(item =>!string.IsNullOrWhiteSpace(item.DeliveryNo) &&!string.IsNullOrWhiteSpace(item.LineNo))
            .Select(item => new
            {
                DeliveryNo = item.DeliveryNo,
                LineNo = item.LineNo
            }).Distinct().ToList();

        if (!validItems.Any())
        {
            throw new ArgumentException("请求中没有有效的效的送货单行数据（均为空或空格）");
        }
        try
        {
            // 2. 执行批量删除（按DeliveryNo+LineNo组合条件）
            int totalDeleted = 0;
            var deletedItems = new List<string>();
            var notFoundItems = new List<string>();

            // 遍历每个组合执行删除（或使用批量条件删除）
            foreach (var item in validItems)
            {
                // 检查当前组合是否存在
                var exists = Db.Queryable<BarcodeInformation>().Any(b => b.DeliveryNo == item.DeliveryNo && b.DnLines == item.LineNo);

                if (exists)
                {
                    // 执行删除
                    var deleted = Db.Deleteable<BarcodeInformation>().Where(b => b.DeliveryNo == item.DeliveryNo && b.DnLines == item.LineNo).ExecuteCommand();
                    totalDeleted += deleted;
                    deletedItems.Add($"{item.DeliveryNo}_{item.LineNo}");
                }
                else
                {
                    notFoundItems.Add($"{item.DeliveryNo}_{item.LineNo}");
                }
            }

            // 3. 返回结果
            return new BatchDeleteResult
            {
                TotalRequested = validItems.Count,
                TotalDeleted = totalDeleted,
                DeletedNos = deletedItems, // 存储格式："DeliveryNo_LineNo"
                NotFoundNos = notFoundItems // 存储格式："DeliveryNo_LineNo"
            };
        }
        catch (Exception ex)
        {
            throw new ApplicationException(
                $"批量删除送货单行失败（共{validItems.Count}条）：{ex.Message}",
                ex);
        }
    }

    #region 私有辅助方法和内部类

    /// <summary>
    /// 内部辅助类：用于关联实体和操作类型（解决dynamic类型转换问题）
    /// </summary>
    private class EntityTypePair
    {
        public BarcodeInformation Entity { get; set; }
        public string Type { get; set; }
    }

    /// <summary>
    /// DTO转实体：映射DeliveryBarcodeInfo到BarcodeInformation字段
    /// </summary>
    private BarcodeInformation ConvertDtoToEntity(DeliveryBarcodeInfo dto)
    {
        var entityId = dto.Type == "1" ? Guid.NewGuid() : (string.IsNullOrEmpty(dto.SmallBarcode) ? Guid.Empty : Guid.NewGuid());

        return new BarcodeInformation
        {
            Id = entityId,
            ProductCode = dto.ProductCode,
            SmallBarcode = dto.SmallBarcode,
            OuterBarcode = dto.OuterBarcode,
            IncludeQty = dto.IncludeQty.HasValue ? Convert.ToDecimal(dto.IncludeQty) : 0,
            DeliveryNo = dto.DeliveryNo,
            DnLines = dto.LineNo,
            PackLevel = dto.BarcodeType,
            CreateTime = dto.Type == "1" ? DateTime.Now : (DateTime?)null,
            UpdateTime = DateTime.Now,
            // 扩展字段赋默认值
            BigBarcode = null,
            SmallPackageLength = null,
            SmallPackageWidth = null,
            SmallPackageHeight = null,
            BigPackageLength = null,
            BigPackageWidth = null,
            BigPackageHeight = null,
            OuterPackageLength = null,
            OuterPackageWidth = null,
            OuterPackageHeight = null,
            SmallPackageSn = null,
            BigPackageSn = null,
            OutPackageSn = null,
            DynamicData = null,
            PoErpNo = null,
            PoLineNo = null,
            InnerVendorCode = null,
            Customize1 = null,
            SynchronousDate = null,
            Customize2 = null,
            Customize3 = null
        };
    }

    /// <summary>
    /// 单个条码新增
    /// </summary>
    private bool InsertBarcode(BarcodeInformation entity)
    {
        // 检查条码是否已存在
        if (IsBarcodeExists(entity))
        {
            throw new InvalidOperationException($"条码已存在，无法重复插入：SmallBarcode={entity.SmallBarcode}, OuterBarcode={entity.OuterBarcode}");
        }
        
        var isInsertSuccess = base.Insert(entity);
        return isInsertSuccess ? true : throw new NotImplementedException("条码新增失败：数据库插入操作未执行成功");
    }
    /// <summary>
    /// 单个条码删除（按主键Id）
    /// </summary>
    private bool DeleteBarcode(Guid id)
    {
        if (id == Guid.Empty)
        {
            throw new ArgumentException("删除操作的条码Id不能为空");
        }
        var deleteRowCount = Db.Deleteable<BarcodeInformation>().Where(entity => entity.Id == id).ExecuteCommand();

        return deleteRowCount > 0 ? true : throw new NotImplementedException($"条码删除失败：未找到Id为「{id}」的条码记录");
    }

    /// <summary>
    /// 批量条码新增
    /// </summary>
    private bool InsertBarcodeBatch(List<BarcodeInformation> entityList)
    {
        // 检查批量条码中是否有重复
        var duplicateBarcodes = new List<string>();
        foreach (var entity in entityList)
        {
            if (IsBarcodeExists(entity))
            {
                duplicateBarcodes.Add($"SmallBarcode={entity.SmallBarcode}, OuterBarcode={entity.OuterBarcode}");
            }
        }
        
        if (duplicateBarcodes.Any())
        {
            throw new InvalidOperationException($"发现重复条码，无法批量插入：{string.Join("; ", duplicateBarcodes)}");
        }
        
        var isBatchInsertSuccess = base.InsertRange(entityList);
        return isBatchInsertSuccess ? true : throw new NotImplementedException($"批量条码新增失败：共{entityList.Count}条记录");
    }

    /// <summary>
    /// 批量条码删除（按主键Id数组）
    /// </summary>
    private bool DeleteBarcodeBatch(Guid[] ids)
    {
        if (ids == null || ids.Length == 0)
        {
            throw new ArgumentException("批量删除的条码Id数组不能为空");
        }
        var deleteRowCount = Db.Deleteable<BarcodeInformation>().Where(entity => ids.Contains(entity.Id)).ExecuteCommand();

        return deleteRowCount > 0 ? true : throw new NotImplementedException($"批量条码删除失败：共{ids.Length}个Id");
    }

    /// <summary>
    /// 检查条码是否已存在
    /// </summary>
    /// <param name="entity">条码实体</param>
    /// <returns>true=已存在，false=不存在</returns>
    private bool IsBarcodeExists(BarcodeInformation entity)
    {
        // 根据SmallBarcode或OuterBarcode检查是否存在重复条码
        return Db.Queryable<BarcodeInformation>()
            .Any(x => (!string.IsNullOrEmpty(entity.SmallBarcode) && x.SmallBarcode == entity.SmallBarcode) ||
                     (!string.IsNullOrEmpty(entity.OuterBarcode) && x.OuterBarcode == entity.OuterBarcode));
    }

    #endregion
}