using FineUIPro;
using Model;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System;

namespace BLL
{
    public static class TwInputdetailBarCodeService
    {
        private static readonly object BarCodeLock = new object();

        public static int Count
        {
            get;
            set;
        }

        public static IEnumerable GetListData(Tw_InputDetailBarCodeOutput table, Grid grid1)
        {
            List<Tw_InputDetailBarCodeOutput> list = GetListData(table);
            Count = list.Count;
            if (Count == 0)
            {
                return null;
            }
            return list.Skip(grid1.PageSize * grid1.PageIndex).Take(grid1.PageSize);
        }

        public static List<Tw_InputDetailBarCodeOutput> GetListData(Tw_InputDetailBarCodeOutput table)
        {
            var q = from x in Funs.DB.Tw_InputDetailBarCode
                    join master in Funs.DB.Tw_InputMaster on x.InputMasterId equals master.Id into masters
                    from master in masters.DefaultIfEmpty()
                    join mat in Funs.DB.HJGL_MaterialCodeLib on x.MaterialCode equals mat.MaterialCode into mats
                    from mat in mats.DefaultIfEmpty()
                    where
                        (string.IsNullOrEmpty(table.Id) || x.Id.Contains(table.Id)) &&
                        (string.IsNullOrEmpty(table.InputDetailId) || x.InputDetailId.Contains(table.InputDetailId)) &&
                        (string.IsNullOrEmpty(table.InputMasterId) || x.InputMasterId.Contains(table.InputMasterId)) &&
                        (string.IsNullOrEmpty(table.MaterialCode) || x.MaterialCode.Contains(table.MaterialCode))
                    orderby master.CusBillCode, x.MaterialCode, x.Id
                    select new Tw_InputDetailBarCodeOutput
                    {
                        Id = x.Id,
                        InputDetailId = x.InputDetailId,
                        InputMasterId = x.InputMasterId,
                        CusBillCode = master.CusBillCode,
                        MaterialCode = x.MaterialCode,
                        Code = mat.Code,
                        HeatNo = mat.HeatNo,
                        BatchNo = mat.BatchNo,
                        MaterialName = mat.MaterialName,
                        MaterialDef = mat.MaterialDef,
                        MaterialSpec = mat.MaterialSpec,
                        MaterialUnit = mat.MaterialUnit,
                        BarCode = x.BarCode,
                        Quantity = x.Quantity
                    };

            return q.ToList();
        }
        public static List<Tw_InputDetailBarCodeOutput> GetListData(string materialCode)
        {
            var q = from detailBarCode in Funs.DB.Tw_InputDetailBarCode
                    join mat in Funs.DB.HJGL_MaterialCodeLib on detailBarCode.MaterialCode equals mat.MaterialCode
                    where detailBarCode.MaterialCode == materialCode
                    orderby detailBarCode.BarCode
                    select new Tw_InputDetailBarCodeOutput
                    {
                        Id = detailBarCode.Id,
                        InputDetailId = detailBarCode.InputDetailId,
                        InputMasterId = detailBarCode.InputMasterId,
                        MaterialCode = mat.MaterialCode,
                        Code = mat.Code,
                        HeatNo = mat.HeatNo,
                        BatchNo = mat.BatchNo,
                        MaterialName = mat.MaterialName,
                        MaterialDef = mat.MaterialDef,
                        MaterialSpec = mat.MaterialSpec,
                        MaterialUnit = mat.MaterialUnit,
                        BarCode = detailBarCode.BarCode,
                        Quantity = detailBarCode.Quantity
                    };

            return q.ToList();
        }
        public static void AddByInputDetail(Tw_InputMaster inputMaster, Tw_InputDetail inputDetail)
        {
            if (inputMaster == null || inputDetail == null)
            {
                return;
            }
            if (IsExist(inputDetail.Id))
            {
                return;
            }

            lock (BarCodeLock)
            {
                if (IsExist(inputDetail.Id))
                {
                    return;
                }

                string id = SQLHelper.GetNewID();
                bool isMeter = IsMeterMaterial(inputDetail.MaterialCode);
                Tw_InputDetailBarCode table = new Tw_InputDetailBarCode
                {
                    Id = id,
                    InputDetailId = inputDetail.Id,
                    InputMasterId = inputMaster.Id,
                    MaterialCode = inputDetail.MaterialCode,
                    // 按米计量的管材由扫码后录入实际长度，其他材料每个条码固定代表1件。
                    Quantity = isMeter ? (decimal?)null : 1m,
                    BarCode = isMeter ? BuildNextBarCode(inputDetail.MaterialCode) : inputDetail.MaterialCode
                };
                Funs.DB.Tw_InputDetailBarCode.InsertOnSubmit(table);
                Funs.DB.SubmitChanges();
            }
        }

        /// <summary>
        /// 为指定管材入库明细生成下一个流水条码。
        /// </summary>
        public static string AddNextByInputDetailId(string inputDetailId)
        {
            if (string.IsNullOrWhiteSpace(inputDetailId))
            {
                throw new ArgumentException("入库明细不能为空。");
            }

            lock (BarCodeLock)
            {
                var inputDetail = Funs.DB.Tw_InputDetail.FirstOrDefault(x => x.Id == inputDetailId);
                if (inputDetail == null)
                {
                    throw new InvalidOperationException("未找到入库明细。");
                }
                if (!IsMeterMaterial(inputDetail.MaterialCode))
                {
                    throw new InvalidOperationException("只有单位为米的管材可以生成新条码。");
                }

                string barCode = BuildNextBarCode(inputDetail.MaterialCode);
                Funs.DB.Tw_InputDetailBarCode.InsertOnSubmit(new Tw_InputDetailBarCode
                {
                    Id = SQLHelper.GetNewID(),
                    InputDetailId = inputDetail.Id,
                    InputMasterId = inputDetail.InputMasterId,
                    MaterialCode = inputDetail.MaterialCode,
                    BarCode = barCode,
                    Quantity = null
                });
                Funs.DB.SubmitChanges();
                return barCode;
            }
        }

        public static void DeleteByInputMasterId(string inputMasterId)
        {
            if (string.IsNullOrEmpty(inputMasterId))
            {
                return;
            }

            var list = Funs.DB.Tw_InputDetailBarCode.Where(x => x.InputMasterId == inputMasterId).ToList();
            if (list.Count > 0)
            {
                Funs.DB.Tw_InputDetailBarCode.DeleteAllOnSubmit(list);
                Funs.DB.SubmitChanges();
            }
        }

        public static void DeleteByInputDetailId(string inputDetailId)
        {
            if (string.IsNullOrEmpty(inputDetailId))
            {
                return;
            }

            var list = Funs.DB.Tw_InputDetailBarCode.Where(x => x.InputDetailId == inputDetailId).ToList();
            if (list.Count > 0)
            {
                Funs.DB.Tw_InputDetailBarCode.DeleteAllOnSubmit(list);
                Funs.DB.SubmitChanges();
            }
        }

        private static bool IsExist(string inputDetailId)
        {
            return Funs.DB.Tw_InputDetailBarCode.Any(x => x.InputDetailId == inputDetailId);
        }
        /// <summary>
        /// 入库材料条形码生成规则，后续调整条形码内容只需修改此方法。
        /// </summary>
        public static string BuildBarCode(Tw_InputMaster inputMaster, Tw_InputDetail inputDetail, string barCodeDetailId)
        {
            if (inputDetail == null)
            {
                return string.Empty;
            }
            return IsMeterMaterial(inputDetail.MaterialCode)
                ? BuildNextBarCode(inputDetail.MaterialCode)
                : inputDetail.MaterialCode;
        }

        private static bool IsMeterMaterial(string materialCode)
        {
            string materialUnit = Funs.DB.HJGL_MaterialCodeLib
                .Where(x => x.MaterialCode == materialCode)
                .Select(x => x.MaterialUnit)
                .FirstOrDefault();
            return string.Equals((materialUnit ?? string.Empty).Trim(), "米", StringComparison.Ordinal);
        }

        private static string BuildNextBarCode(string materialCode)
        {
            string prefix = materialCode + "-";
            int maxSequence = 0;
            var barCodes = Funs.DB.Tw_InputDetailBarCode
                .Where(x => x.MaterialCode == materialCode && x.BarCode.StartsWith(prefix))
                .Select(x => x.BarCode)
                .ToList();
            foreach (string barCode in barCodes)
            {
                int sequence;
                if (int.TryParse(barCode.Substring(prefix.Length), out sequence) && sequence > maxSequence)
                {
                    maxSequence = sequence;
                }
            }
            return prefix + (maxSequence + 1).ToString("D3");
        }
    }
}