77 lines
2.2 KiB
C#
77 lines
2.2 KiB
C#
using ClosedXML.Excel;
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using RhSolutions.SkuParser.Models;
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namespace RhSolutions.SkuParser.Services;
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public class ExcelParser : ISkuParser
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{
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public IEnumerable<ProductQuantity> ParseProducts(IFormFile file)
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{
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using XLWorkbook workbook = new(file.OpenReadStream());
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IXLWorksheet ws = workbook.Worksheet(1);
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var leftTop = ws.FirstCellUsed()?.Address;
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var rightBottom = ws.LastCellUsed()?.Address;
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if (new object?[] { leftTop, rightBottom }.Any(x => x == null))
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{
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throw new ArgumentException($"Таблица пуста: {file.FileName}");
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}
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var lookupRange = ws.Range(leftTop, rightBottom).RangeUsed();
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var columns = lookupRange.Columns();
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var skuColumnQuantity = columns
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.Select(column => new
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{
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Column = column,
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Products = column.CellsUsed()
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.Select(cell => !cell.HasFormula && Product.TryParse(cell.Value.ToString(), out Product? p) ? p : null)
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})
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.Select(c => new { c.Column, SkuCount = c.Products.Count(p => p != null) })
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.Aggregate((l, r) => l.SkuCount > r.SkuCount ? l : r);
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var skuColumn = skuColumnQuantity.SkuCount > 0 ? skuColumnQuantity.Column : null;
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if (skuColumn == null)
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{
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throw new ArgumentException($"Столбец с артикулом не определен: {file.FileName}");
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}
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var quantityColumn = lookupRange.Columns().Skip(skuColumn.ColumnNumber())
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.Select(column => new
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{
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Column = column,
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IsColumnWithNumbers = column.CellsUsed()
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.Count(cell => cell.Value.IsNumber == true) > column.CellsUsed().Count() / 4
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})
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.First(x => x.IsColumnWithNumbers)
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.Column;
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if (quantityColumn == null)
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{
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throw new ArgumentException($"Столбец с количеством не определен: {file.FileName}");
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}
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List<ProductQuantity> result = new();
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var rows = quantityColumn.CellsUsed().Select(x => x.Address.RowNumber);
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foreach (var row in rows)
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{
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var quantity = quantityColumn.Cell(row).Value;
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var sku = skuColumn.Cell(row).Value;
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if (quantity.IsNumber
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&& Product.TryParse(sku.ToString(), out Product? p))
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{
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ProductQuantity pq = new()
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{
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Product = p!,
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Quantity = quantity.GetNumber()
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};
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result.Add(pq);
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}
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}
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return result;
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}
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}
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