using BaseOUDAL;
using System.Data;
using System.Globalization;
using System.Text.RegularExpressions;
using YLErp.Model;

namespace YLErp.Modules.ClientCashModule
{
    /// <summary>
    /// 
    /// </summary>
    public class VarietyMappingDeductService : YLBaseService
    {
        public VarietyMappingDeductService(OptUserInfo userInfo) : base(userInfo)
        {
        }

        public variety_mapping_deduct SaveClientVarietyConfig(variety_mapping_deduct req)
        {
            if (req is null)
            {
                throw new ArgumentNullException(nameof(req));
            }

            if (DbContext.variety_mapping_deduct.Any(x => x.id != req.id && x.VarietyId == req.VarietyId && x.VarietyIdOther == req.VarietyIdOther))
            {
                throw new Exception("同一客户同一品种不支持在同一天有多条配置记录");
            }

            var varietyMappingDeduct = DbContext.variety_mapping_deduct.Find(req.id);
            if (varietyMappingDeduct == null)
            {
                varietyMappingDeduct = new variety_mapping_deduct();
                DbContext.variety_mapping_deduct.Add(varietyMappingDeduct);
            }

            UpdateChanges(varietyMappingDeduct, req);

            varietyMappingDeduct.OptDate = DateTime.Now;
            varietyMappingDeduct.OptId = UserId;
            varietyMappingDeduct.OptName = UserName;

            DbContext.SaveChanges();

            return varietyMappingDeduct;
        }

        /// <summary>
        /// 导入抵扣品种对配置
        /// </summary>
        /// <param name="streamIn"></param>
        /// <param name="totalNum">当前文件中的目标期权总条数</param>
        /// <param name="successNum">成功入库的数量</param>
        public void ImportVarietyMappingDeductFromExcel(Stream streamIn, out int totalNum, out int successNum)
        {
            totalNum = 0;
            successNum = 0;

            var rowIndex = 0;
            try
            {
                var ds = Office.ExcelHelper.ReadExcelAsDataSet(streamIn, new[] { 0 }, 0);

                if (ds.Tables.Count < 1 || ds.Tables[0].Rows.Count < 2)
                {
                    throw new ServiceException("读取导入数据失败:数据为空") { Tag = "111" };
                }

                var table = ds.Tables[0];
                var reader = new DataRowReader(table);

                rowIndex = 1;
                totalNum = table.Rows.Count - rowIndex;

                using (var trans = BeginTransaction())
                {
                    foreach (var row in table.Rows.Cast<DataRow>().Skip(1))
                    {
                        rowIndex++;

                        if (row.ItemArray.All(n => string.IsNullOrWhiteSpace(n?.ToString())))
                        {
                            totalNum--;
                            continue;
                        }

                        reader.SetDataRow(row);

                        var varietyCode = reader.GetString("品种一");
                        var varietyCodeOther = reader.GetString("品种二");

                        if (varietyCode == varietyCodeOther)
                        {
                            throw new ServiceException($"同一品种{varietyCode}不支持抵扣配置");
                        }

                        var variety = DataCacheProvider.GetVarietyDataSource().GetData(varietyCode);
                        if (variety == null)
                        {
                            throw new ServiceException($"品种{varietyCode}不存在");
                        }
                        var varietyOther = DataCacheProvider.GetVarietyDataSource().GetData(varietyCodeOther);
                        if (varietyOther == null)
                        {
                            throw new ServiceException($"品种{varietyCodeOther}不存在");
                        }

                        if (DbContext.variety_mapping_deduct.Any(x => x.VarietyId == variety.id && x.VarietyIdOther == varietyOther.id))
                        {
                            throw new ServiceException($"品种{varietyCode}和{varietyCodeOther}的配置已存在");
                        }

                        var variety_mapping_deduct = new variety_mapping_deduct()
                        {
                            VarietyId = variety.id,
                            VarietyIdOther = varietyOther.id,
                            DPSR = reader.GetDouble("DPSR一", true) ?? 1,
                            DPSROther = reader.GetDouble("DPSR二", true) ?? 1,
                            ConcessionRate = reader.GetPercent("抵扣率", true) ?? 1,
                            Unit = reader.GetDouble("Unit一", true) ?? 1,
                            UnitOther = reader.GetDouble("Unit二", true) ?? 1,
                            Index = reader.GetInt32("优先序号"),
                            OptId = UserId,
                            OptName = UserName,
                            OptDate = DateTime.Now
                        };

                        DbContext.variety_mapping_deduct.Add(variety_mapping_deduct);
                        DbContext.SaveChanges();

                        successNum++;
                    }

                    trans.Commit();
                }
            }
            catch (ServiceException se)
            {
                if (se.Tag != null)
                {
                    throw;
                }

                throw new ServiceException($"第{rowIndex}行,{se.Message}");
            }
            catch (Exception ex)
            {
                LogFactory.GetLogger("导入抵扣品种对配置").Error(ex);
                throw new ServiceException($"第{rowIndex}行,发生错误:{ex.Message}", ex);
            }
        }

        /// <summary>
        /// trade_swap_flow
        /// </summary>
        public SearchListResult<variety_mapping_deduct> SearchVarietyMappingDeductList(VarietyMappingDeductReq req)
        {
            var query = from source in DbContext.variety_mapping_deduct select source;

            if (string.IsNullOrEmpty(req.sidx))
            {
                req.sidx = "id";
                req.sord = "desc";
            }

            var retListResult = query.ToSearchList(req);
            var varietyIds = retListResult.rows.Select(x => x.VarietyId).ToList();
            varietyIds.AddRange(retListResult.rows.Select(x => x.VarietyIdOther).ToList());
            varietyIds = varietyIds.Distinct().ToList();
            var varietys = DbContext.variety.Where(x => varietyIds.Contains(x.id)).ToList();
            foreach (var item in retListResult.rows)
            {
                var variety = varietys.FirstOrDefault(x => x.id == item.VarietyId);
                if (variety != null)
                {
                    item.VarietyCode = variety.VarietyCode;
                }

                var varietyOther = varietys.FirstOrDefault(x => x.id == item.VarietyIdOther);
                if (varietyOther != null)
                {
                    item.VarietyCodeOther = varietyOther.VarietyCode;
                }
            }

            return retListResult;
        }

        #region---内部业务类----

        class DataRowReader
        {
            DataRow _row;

            readonly Dictionary<string, int> _colMap;

            public DataRowReader(DataTable table)
            {
                var colCount = table.Columns.Count;

                _colMap = new Dictionary<string, int>(colCount, StringComparer.OrdinalIgnoreCase);

                var row1 = table.Rows[0];
                var preCol1 = string.Empty;

                for (var index = 0; index < colCount; index++)
                {
                    var col1 = row1[index]?.ToString()?.Trim();
                    if (!string.IsNullOrWhiteSpace(col1))
                    {
                        preCol1 = col1;
                    }
                    _colMap[preCol1] = index;
                }
            }

            /// <summary>
            /// 设置datarow
            /// </summary>
            public void SetDataRow(DataRow row)
            {
                _row = row;
            }

            public string GetString(string fieldName, bool required = false)
            {
                var str = _colMap.TryGetValue(fieldName, out var colIndex) ? _row[colIndex]?.ToString()?.Trim() : null;

                if (required && string.IsNullOrWhiteSpace(str))
                {
                    throw new ServiceException($"{fieldName} 必须填写");
                }

                return str;
            }

            public double? GetDoubleOrPercent(string fieldName, bool required, bool percent)
            {
                var str = GetString(fieldName, required);

                if (!required && string.IsNullOrWhiteSpace(str))
                {
                    return null;
                }

                if (percent && (percent = str.EndsWith("%")))
                {
                    str = str.TrimEnd('%');
                }

                return double.TryParse(str, out var num) ? (percent ? num / 100 : num) : throw new ServiceException($"{fieldName} 填写错误:{str}");
            }

            public double? GetDouble(string fieldName, bool required = false)
            {
                var str = GetString(fieldName, required);

                if (!required && string.IsNullOrWhiteSpace(str))
                {
                    return null;
                }

                return double.TryParse(str, out var num) ? num : throw new ServiceException($"{fieldName} 填写错误:{str}");
            }

            //为了兼容模板修改导致的字段名称改变问题
            public double? GetDouble(string fieldName, string fieldName2, bool required = false)
            {
                var str = GetString(fieldName, false) ?? GetString(fieldName2, false);

                if (string.IsNullOrWhiteSpace(str))
                {
                    return required ? throw new ServiceException($"{fieldName} 必须填写") : (double?)null;
                }

                return double.TryParse(str, out var num) ? num : throw new ServiceException($"{fieldName} 填写错误:{str}");
            }

            public double? GetPercent(string fieldName, bool required = false)
            {
                var str = GetString(fieldName, required);

                if (!required && string.IsNullOrWhiteSpace(str))
                {
                    return null;
                }

                var percent = str.EndsWith("%");

                if (percent)
                {
                    str = str.TrimEnd('%');
                }

                return double.TryParse(str, out var num) ? (percent ? num / 100 : num) : throw new ServiceException($"{fieldName} 填写错误:{str}");
            }

            /// <summary>
            /// 获取日期(不包括时间)
            /// </summary>
            public DateTime? GetDate(string fieldName, bool required = false)
            {
                var str = GetString(fieldName, required);

                if (!required && string.IsNullOrWhiteSpace(str))
                {
                    return null;
                }

                if (str.Length == 8 && Regex.IsMatch(str, @"^\d+$"))
                {
                    return DateTime.TryParseExact(str, "yyyyMMdd", CultureInfo.InvariantCulture, DateTimeStyles.None, out var dt2) ? dt2 : throw new ServiceException($"{fieldName} 填写错误:{str}");
                }

                return DateTime.TryParse(str, out var dt) ? dt.Date : throw new ServiceException($"{fieldName} 填写错误:{str}");
            }

            /// <summary>
            /// 
            /// </summary>
            public int? GetInt32(string fieldName, bool required = false)
            {
                var str = GetString(fieldName, required);

                if (!required && string.IsNullOrWhiteSpace(str))
                {
                    return null;
                }

                return int.TryParse(str, out var num) ? num : throw new ServiceException($"{fieldName} 填写错误:{str}");
            }
        }

        #endregion
    }
}