Merge branch 'development' into 'production'

add excel export for purchase supplier report

See merge request mbugroup/lti-api!563

internal/modules/repports/controllers/repport.balance_monitoring.export.go

@@ -0,0 +1,286 @@
+package controller
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/gofiber/fiber/v2"
+	"github.com/xuri/excelize/v2"
+	"gitlab.com/mbugroup/lti-api.git/internal/modules/repports/dto"
+)
+
+func isBalanceMonitoringExcelExportRequest(c *fiber.Ctx) bool {
+	return strings.EqualFold(strings.TrimSpace(c.Query("export")), "excel")
+}
+
+func exportBalanceMonitoringExcel(c *fiber.Ctx, items []dto.BalanceMonitoringRowDTO, totals dto.BalanceMonitoringTotalsDTO) error {
+	content, err := buildBalanceMonitoringWorkbook(items, totals)
+	if err != nil {
+		return fiber.NewError(fiber.StatusInternalServerError, "failed to generate excel file")
+	}
+
+	filename := fmt.Sprintf("laporan-balance-monitoring-%s.xlsx", time.Now().Format("2006-01-02-1504"))
+	c.Set("Content-Type", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")
+	c.Set("Content-Disposition", fmt.Sprintf(`attachment; filename="%s"`, filename))
+	return c.Status(fiber.StatusOK).Send(content)
+}
+
+func buildBalanceMonitoringWorkbook(items []dto.BalanceMonitoringRowDTO, totals dto.BalanceMonitoringTotalsDTO) ([]byte, error) {
+	file := excelize.NewFile()
+	defer file.Close()
+
+	const sheet = "Balance Monitoring"
+	defaultSheet := file.GetSheetName(file.GetActiveSheetIndex())
+	if defaultSheet != sheet {
+		if err := file.SetSheetName(defaultSheet, sheet); err != nil {
+			return nil, err
+		}
+	}
+
+	if err := setBalanceMonitoringColumns(file, sheet); err != nil {
+		return nil, err
+	}
+	if err := setBalanceMonitoringHeaders(file, sheet); err != nil {
+		return nil, err
+	}
+	if err := writeBalanceMonitoringRows(file, sheet, items, totals); err != nil {
+		return nil, err
+	}
+	if err := file.SetPanes(sheet, &excelize.Panes{
+		Freeze:      true,
+		YSplit:      2,
+		TopLeftCell: "A3",
+		ActivePane:  "bottomLeft",
+	}); err != nil {
+		return nil, err
+	}
+
+	buf, err := file.WriteToBuffer()
+	if err != nil {
+		return nil, err
+	}
+	return buf.Bytes(), nil
+}
+
+var bmColumnWidths = map[string]float64{
+	"A": 5,
+	"B": 28,
+	"C": 18,
+	"D": 12,
+	"E": 12,
+	"F": 20,
+	"G": 12,
+	"H": 12,
+	"I": 20,
+	"J": 20,
+	"K": 18,
+	"L": 12,
+	"M": 16,
+	"N": 20,
+}
+
+func setBalanceMonitoringColumns(file *excelize.File, sheet string) error {
+	for col, width := range bmColumnWidths {
+		if err := file.SetColWidth(sheet, col, col, width); err != nil {
+			return err
+		}
+	}
+	if err := file.SetRowHeight(sheet, 1, 24); err != nil {
+		return err
+	}
+	return file.SetRowHeight(sheet, 2, 24)
+}
+
+func setBalanceMonitoringHeaders(file *excelize.File, sheet string) error {
+	borderStyle := []excelize.Border{
+		{Type: "left", Color: "000000", Style: 1},
+		{Type: "top", Color: "000000", Style: 1},
+		{Type: "bottom", Color: "000000", Style: 1},
+		{Type: "right", Color: "000000", Style: 1},
+	}
+	headerStyle, err := file.NewStyle(&excelize.Style{
+		Font: &excelize.Font{Bold: true, Color: "FFFFFF", Family: "Arial", Size: 10},
+		Fill: excelize.Fill{Type: "pattern", Pattern: 1, Color: []string{"4472C4"}},
+		Alignment: &excelize.Alignment{
+			Horizontal: "center",
+			Vertical:   "center",
+			WrapText:   true,
+		},
+		Border: borderStyle,
+	})
+	if err != nil {
+		return err
+	}
+
+	// Single-column headers: merge rows 1 and 2 vertically
+	singleColHeaders := map[string]string{
+		"A": "No",
+		"B": "Customer",
+		"C": "Saldo Awal",
+		"J": "Penjualan Trading",
+		"K": "Pembayaran",
+		"L": "Aging",
+		"M": "Aging Rata-Rata",
+		"N": "Saldo Akhir",
+	}
+	for col, header := range singleColHeaders {
+		if err := file.SetCellValue(sheet, col+"1", header); err != nil {
+			return err
+		}
+		if err := file.MergeCell(sheet, col+"1", col+"2"); err != nil {
+			return err
+		}
+	}
+
+	// Group headers: merge columns horizontally in row 1
+	if err := file.SetCellValue(sheet, "D1", "Penjualan Ayam"); err != nil {
+		return err
+	}
+	if err := file.MergeCell(sheet, "D1", "F1"); err != nil {
+		return err
+	}
+	if err := file.SetCellValue(sheet, "G1", "Penjualan Telur"); err != nil {
+		return err
+	}
+	if err := file.MergeCell(sheet, "G1", "I1"); err != nil {
+		return err
+	}
+
+	// Sub-column headers in row 2
+	subHeaders := map[string]string{
+		"D": "Ekor",
+		"E": "Kg",
+		"F": "Nominal",
+		"G": "Butir",
+		"H": "Kg",
+		"I": "Nominal",
+	}
+	for col, header := range subHeaders {
+		if err := file.SetCellValue(sheet, col+"2", header); err != nil {
+			return err
+		}
+	}
+
+	return file.SetCellStyle(sheet, "A1", "N2", headerStyle)
+}
+
+func writeBalanceMonitoringRows(file *excelize.File, sheet string, items []dto.BalanceMonitoringRowDTO, totals dto.BalanceMonitoringTotalsDTO) error {
+	borderStyle := []excelize.Border{
+		{Type: "left", Color: "000000", Style: 1},
+		{Type: "top", Color: "000000", Style: 1},
+		{Type: "bottom", Color: "000000", Style: 1},
+		{Type: "right", Color: "000000", Style: 1},
+	}
+
+	dataStyle, err := file.NewStyle(&excelize.Style{
+		Font:      &excelize.Font{Color: "000000", Family: "Arial", Size: 10},
+		Alignment: &excelize.Alignment{Vertical: "center", WrapText: true},
+		Border:    borderStyle,
+	})
+	if err != nil {
+		return err
+	}
+
+	totalStyle, err := file.NewStyle(&excelize.Style{
+		Font:      &excelize.Font{Bold: true, Color: "000000", Family: "Arial", Size: 10},
+		Fill:      excelize.Fill{Type: "pattern", Pattern: 1, Color: []string{"E2EFDA"}},
+		Alignment: &excelize.Alignment{Vertical: "center", WrapText: true},
+		Border:    borderStyle,
+	})
+	if err != nil {
+		return err
+	}
+
+	redDataStyle, err := file.NewStyle(&excelize.Style{
+		Font:      &excelize.Font{Color: "FF0000", Family: "Arial", Size: 10},
+		Alignment: &excelize.Alignment{Vertical: "center", WrapText: true},
+		Border:    borderStyle,
+	})
+	if err != nil {
+		return err
+	}
+
+	redTotalStyle, err := file.NewStyle(&excelize.Style{
+		Font:      &excelize.Font{Bold: true, Color: "FF0000", Family: "Arial", Size: 10},
+		Fill:      excelize.Fill{Type: "pattern", Pattern: 1, Color: []string{"E2EFDA"}},
+		Alignment: &excelize.Alignment{Vertical: "center", WrapText: true},
+		Border:    borderStyle,
+	})
+	if err != nil {
+		return err
+	}
+
+	for i, row := range items {
+		rowNum := i + 3
+		rowStr := strconv.Itoa(rowNum)
+
+		cells := map[string]interface{}{
+			"A": i + 1,
+			"B": row.Customer.Name,
+			"C": row.SaldoAwal,
+			"D": row.PenjualanAyam.Ekor,
+			"E": row.PenjualanAyam.Kg,
+			"F": row.PenjualanAyam.Nominal,
+			"G": row.PenjualanTelur.Butir,
+			"H": row.PenjualanTelur.Kg,
+			"I": row.PenjualanTelur.Nominal,
+			"J": row.PenjualanTrading.Nominal,
+			"K": row.Pembayaran,
+			"L": fmt.Sprintf("%d hari", row.Aging),
+			"M": formatBMAging(row.AgingRataRata),
+			"N": row.SaldoAkhir,
+		}
+		for col, val := range cells {
+			if err := file.SetCellValue(sheet, col+rowStr, val); err != nil {
+				return err
+			}
+		}
+		if err := file.SetCellStyle(sheet, "A"+rowStr, "N"+rowStr, dataStyle); err != nil {
+			return err
+		}
+		if row.SaldoAkhir < 0 {
+			if err := file.SetCellStyle(sheet, "N"+rowStr, "N"+rowStr, redDataStyle); err != nil {
+				return err
+			}
+		}
+	}
+
+	// Totals row
+	totalRowStr := strconv.Itoa(len(items) + 3)
+	totalCells := map[string]interface{}{
+		"A": "Total",
+		"C": totals.SaldoAwal,
+		"D": totals.PenjualanAyam.Ekor,
+		"E": totals.PenjualanAyam.Kg,
+		"F": totals.PenjualanAyam.Nominal,
+		"G": totals.PenjualanTelur.Butir,
+		"H": totals.PenjualanTelur.Kg,
+		"I": totals.PenjualanTelur.Nominal,
+		"J": totals.PenjualanTrading.Nominal,
+		"K": totals.Pembayaran,
+		"N": totals.SaldoAkhir,
+	}
+	for col, val := range totalCells {
+		if err := file.SetCellValue(sheet, col+totalRowStr, val); err != nil {
+			return err
+		}
+	}
+	if err := file.SetCellStyle(sheet, "A"+totalRowStr, "N"+totalRowStr, totalStyle); err != nil {
+		return err
+	}
+	if totals.SaldoAkhir < 0 {
+		if err := file.SetCellStyle(sheet, "N"+totalRowStr, "N"+totalRowStr, redTotalStyle); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func formatBMAging(v float64) string {
+	s := strconv.FormatFloat(v, 'f', 2, 64)
+	s = strings.ReplaceAll(s, ".", ",")
+	return s + " hari"
+}

internal/modules/repports/controllers/repport.controller.go

@@ -324,6 +324,13 @@ func (c *RepportController) GetPurchaseSupplier(ctx *fiber.Ctx) error {
 		return err
 	}
 
+	if isPurchaseSupplierExcelExportRequest(ctx) {
+		return exportPurchaseSupplierExcel(ctx, result)
+	}
+	if isPurchaseSupplierExcelAllExportRequest(ctx) {
+		return exportPurchaseSupplierExcelAll(ctx, result)
+	}
+
 	filters := map[string]interface{}{
 		"area_id":             query.AreaIDs,
 		"supplier_id":         query.SupplierIDs,
@@ -555,6 +562,10 @@ func (c *RepportController) GetBalanceMonitoring(ctx *fiber.Ctx) error {
 		return err
 	}
 
+	if isBalanceMonitoringExcelExportRequest(ctx) {
+		return exportBalanceMonitoringExcel(ctx, result, totals)
+	}
+
 	limit := query.Limit
 	if limit < 1 {
 		limit = 10

internal/modules/repports/controllers/repport.purchase_supplier.export.go

@@ -0,0 +1,415 @@
+package controller
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	"github.com/gofiber/fiber/v2"
+	"github.com/xuri/excelize/v2"
+	"gitlab.com/mbugroup/lti-api.git/internal/modules/repports/dto"
+)
+
+func isPurchaseSupplierExcelExportRequest(c *fiber.Ctx) bool {
+	return strings.EqualFold(strings.TrimSpace(c.Query("export")), "excel")
+}
+
+func isPurchaseSupplierExcelAllExportRequest(c *fiber.Ctx) bool {
+	return strings.EqualFold(strings.TrimSpace(c.Query("export")), "excel-all")
+}
+
+func exportPurchaseSupplierExcel(c *fiber.Ctx, items []dto.PurchaseSupplierDTO) error {
+	content, err := buildPurchaseSupplierWorkbook(items)
+	if err != nil {
+		return fiber.NewError(fiber.StatusInternalServerError, "failed to generate excel file")
+	}
+
+	filename := fmt.Sprintf("laporan-pembelian-supplier-%s.xlsx", time.Now().Format("2006-01-02-1504"))
+	c.Set("Content-Type", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")
+	c.Set("Content-Disposition", fmt.Sprintf(`attachment; filename="%s"`, filename))
+	return c.Status(fiber.StatusOK).Send(content)
+}
+
+func exportPurchaseSupplierExcelAll(c *fiber.Ctx, items []dto.PurchaseSupplierDTO) error {
+	content, err := buildPurchaseSupplierAllWorkbook(items)
+	if err != nil {
+		return fiber.NewError(fiber.StatusInternalServerError, "failed to generate excel file")
+	}
+
+	filename := fmt.Sprintf("laporan-pembelian-supplier-all-%s.xlsx", time.Now().Format("2006-01-02-1504"))
+	c.Set("Content-Type", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")
+	c.Set("Content-Disposition", fmt.Sprintf(`attachment; filename="%s"`, filename))
+	return c.Status(fiber.StatusOK).Send(content)
+}
+
+// buildPurchaseSupplierWorkbook creates a workbook with one sheet per supplier.
+func buildPurchaseSupplierWorkbook(items []dto.PurchaseSupplierDTO) ([]byte, error) {
+	file := excelize.NewFile()
+	defer file.Close()
+
+	defaultSheet := file.GetSheetName(file.GetActiveSheetIndex())
+
+	if len(items) == 0 {
+		if err := writePurchaseSupplierSheet(file, defaultSheet, dto.PurchaseSupplierDTO{}); err != nil {
+			return nil, err
+		}
+		buf, err := file.WriteToBuffer()
+		if err != nil {
+			return nil, err
+		}
+		return buf.Bytes(), nil
+	}
+
+	for idx, item := range items {
+		sheetName := sanitizePurchaseSupplierSheetName(purchaseSupplierName(item))
+		if sheetName == "" {
+			sheetName = fmt.Sprintf("Supplier %d", idx+1)
+		}
+
+		if idx == 0 {
+			if defaultSheet != sheetName {
+				if err := file.SetSheetName(defaultSheet, sheetName); err != nil {
+					return nil, err
+				}
+			}
+		} else {
+			if _, err := file.NewSheet(sheetName); err != nil {
+				return nil, err
+			}
+		}
+
+		if err := writePurchaseSupplierSheet(file, sheetName, item); err != nil {
+			return nil, err
+		}
+	}
+
+	buf, err := file.WriteToBuffer()
+	if err != nil {
+		return nil, err
+	}
+	return buf.Bytes(), nil
+}
+
+// buildPurchaseSupplierAllWorkbook creates a single-sheet workbook with all suppliers.
+func buildPurchaseSupplierAllWorkbook(items []dto.PurchaseSupplierDTO) ([]byte, error) {
+	file := excelize.NewFile()
+	defer file.Close()
+
+	const sheet = "Rekap Pembelian Supplier"
+	defaultSheet := file.GetSheetName(file.GetActiveSheetIndex())
+	if defaultSheet != sheet {
+		if err := file.SetSheetName(defaultSheet, sheet); err != nil {
+			return nil, err
+		}
+	}
+
+	if err := setPurchaseSupplierAllColumns(file, sheet); err != nil {
+		return nil, err
+	}
+	if err := setPurchaseSupplierAllHeaders(file, sheet); err != nil {
+		return nil, err
+	}
+	if err := writePurchaseSupplierAllRows(file, sheet, items); err != nil {
+		return nil, err
+	}
+	if err := file.SetPanes(sheet, &excelize.Panes{
+		Freeze:      true,
+		YSplit:      1,
+		TopLeftCell: "A2",
+		ActivePane:  "bottomLeft",
+	}); err != nil {
+		return nil, err
+	}
+
+	buf, err := file.WriteToBuffer()
+	if err != nil {
+		return nil, err
+	}
+	return buf.Bytes(), nil
+}
+
+var purchaseSupplierSheetHeaders = []string{
+	"No",
+	"Tanggal Terima",
+	"Tanggal PO",
+	"No. Referensi",
+	"Nama Produk",
+	"Tujuan",
+	"QTY",
+	"Harga Beli (Rp)",
+	"Value Harga Beli (Rp)",
+	"Transport (Rp)",
+	"Value Transport (Rp)",
+	"Jumlah (Rp)",
+	"Ekspedisi",
+	"Surat Jalan",
+}
+
+var purchaseSupplierAllSheetHeaders = append([]string{"Supplier"}, purchaseSupplierSheetHeaders...)
+
+var purchaseSupplierSheetColumnWidths = map[string]float64{
+	"A": 5,
+	"B": 14,
+	"C": 12,
+	"D": 16,
+	"E": 20,
+	"F": 20,
+	"G": 10,
+	"H": 20,
+	"I": 20,
+	"J": 22,
+	"K": 22,
+	"L": 16,
+	"M": 20,
+	"N": 20,
+}
+
+var purchaseSupplierAllSheetColumnWidths = map[string]float64{
+	"A": 24,
+	"B": 6,
+	"C": 14,
+	"D": 12,
+	"E": 16,
+	"F": 20,
+	"G": 20,
+	"H": 10,
+	"I": 20,
+	"J": 20,
+	"K": 22,
+	"L": 22,
+	"M": 16,
+	"N": 20,
+	"O": 20,
+}
+
+func writePurchaseSupplierSheet(file *excelize.File, sheet string, item dto.PurchaseSupplierDTO) error {
+	for col, width := range purchaseSupplierSheetColumnWidths {
+		if err := file.SetColWidth(sheet, col, col, width); err != nil {
+			return err
+		}
+	}
+
+	for i, h := range purchaseSupplierSheetHeaders {
+		col, _ := excelize.ColumnNumberToName(i + 1)
+		if err := file.SetCellValue(sheet, col+"1", h); err != nil {
+			return err
+		}
+	}
+
+	for i, row := range item.Rows {
+		rowNum := i + 2
+		rowStr := fmt.Sprintf("%d", rowNum)
+
+		values := purchaseSupplierRowCells(row, i+1)
+		for colIdx, val := range values {
+			col, _ := excelize.ColumnNumberToName(colIdx + 1)
+			if err := file.SetCellValue(sheet, col+rowStr, val); err != nil {
+				return err
+			}
+		}
+	}
+
+	// Summary row
+	totalRowNum := len(item.Rows) + 2
+	totalRowStr := fmt.Sprintf("%d", totalRowNum)
+	totalCells := map[string]interface{}{
+		"A": "Total",
+		"G": item.Summary.TotalQty,
+		"H": item.Summary.TotalUnitPrice,
+		"I": item.Summary.TotalPurchaseValue,
+		"J": item.Summary.TotalTransportUnitPrice,
+		"K": item.Summary.TotalTransportValue,
+		"L": item.Summary.TotalAmount,
+	}
+	for col, val := range totalCells {
+		if err := file.SetCellValue(sheet, col+totalRowStr, val); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func setPurchaseSupplierAllColumns(file *excelize.File, sheet string) error {
+	for col, width := range purchaseSupplierAllSheetColumnWidths {
+		if err := file.SetColWidth(sheet, col, col, width); err != nil {
+			return err
+		}
+	}
+	if err := file.SetRowHeight(sheet, 1, 24); err != nil {
+		return err
+	}
+	return nil
+}
+
+func setPurchaseSupplierAllHeaders(file *excelize.File, sheet string) error {
+	headerStyle, err := file.NewStyle(&excelize.Style{
+		Font: &excelize.Font{Bold: true, Color: "FFFFFF", Family: "Arial", Size: 10},
+		Fill: excelize.Fill{Type: "pattern", Pattern: 1, Color: []string{"4472C4"}},
+		Alignment: &excelize.Alignment{
+			Horizontal: "center",
+			Vertical:   "center",
+			WrapText:   true,
+		},
+		Border: []excelize.Border{
+			{Type: "left", Color: "000000", Style: 1},
+			{Type: "top", Color: "000000", Style: 1},
+			{Type: "bottom", Color: "000000", Style: 1},
+			{Type: "right", Color: "000000", Style: 1},
+		},
+	})
+	if err != nil {
+		return err
+	}
+
+	for i, h := range purchaseSupplierAllSheetHeaders {
+		col, _ := excelize.ColumnNumberToName(i + 1)
+		if err := file.SetCellValue(sheet, col+"1", h); err != nil {
+			return err
+		}
+	}
+
+	lastCol, _ := excelize.ColumnNumberToName(len(purchaseSupplierAllSheetHeaders))
+	return file.SetCellStyle(sheet, "A1", lastCol+"1", headerStyle)
+}
+
+func writePurchaseSupplierAllRows(file *excelize.File, sheet string, items []dto.PurchaseSupplierDTO) error {
+	borderStyle := []excelize.Border{
+		{Type: "left", Color: "000000", Style: 1},
+		{Type: "top", Color: "000000", Style: 1},
+		{Type: "bottom", Color: "000000", Style: 1},
+		{Type: "right", Color: "000000", Style: 1},
+	}
+
+	dataStyle, err := file.NewStyle(&excelize.Style{
+		Font:      &excelize.Font{Color: "000000", Family: "Arial", Size: 10},
+		Alignment: &excelize.Alignment{Vertical: "center", WrapText: true},
+		Border:    borderStyle,
+	})
+	if err != nil {
+		return err
+	}
+
+	totalStyle, err := file.NewStyle(&excelize.Style{
+		Font:      &excelize.Font{Bold: true, Color: "000000", Family: "Arial", Size: 10},
+		Fill:      excelize.Fill{Type: "pattern", Pattern: 1, Color: []string{"E2EFDA"}},
+		Alignment: &excelize.Alignment{Vertical: "center", WrapText: true},
+		Border:    borderStyle,
+	})
+	if err != nil {
+		return err
+	}
+
+	lastHeaderCol, _ := excelize.ColumnNumberToName(len(purchaseSupplierAllSheetHeaders))
+
+	currentRow := 2
+	for _, item := range items {
+		supplierName := purchaseSupplierName(item)
+
+		// Data rows
+		for seq, row := range item.Rows {
+			rowStr := fmt.Sprintf("%d", currentRow)
+			if err := file.SetCellValue(sheet, "A"+rowStr, supplierName); err != nil {
+				return err
+			}
+			values := purchaseSupplierRowCells(row, seq+1)
+			for colIdx, val := range values {
+				col, _ := excelize.ColumnNumberToName(colIdx + 2)
+				if err := file.SetCellValue(sheet, col+rowStr, val); err != nil {
+					return err
+				}
+			}
+			if err := file.SetCellStyle(sheet, "A"+rowStr, lastHeaderCol+rowStr, dataStyle); err != nil {
+				return err
+			}
+			currentRow++
+		}
+
+		// Summary row
+		totalRowStr := fmt.Sprintf("%d", currentRow)
+		totalCells := map[string]interface{}{
+			"A": supplierName,
+			"B": "Total",
+			"H": item.Summary.TotalQty,
+			"I": item.Summary.TotalUnitPrice,
+			"J": item.Summary.TotalPurchaseValue,
+			"K": item.Summary.TotalTransportUnitPrice,
+			"L": item.Summary.TotalTransportValue,
+			"M": item.Summary.TotalAmount,
+		}
+		for col, val := range totalCells {
+			if err := file.SetCellValue(sheet, col+totalRowStr, val); err != nil {
+				return err
+			}
+		}
+		if err := file.SetCellStyle(sheet, "A"+totalRowStr, lastHeaderCol+totalRowStr, totalStyle); err != nil {
+			return err
+		}
+		currentRow++
+
+		// Empty separator row
+		currentRow++
+	}
+
+	return nil
+}
+
+// purchaseSupplierRowCells returns cell values for one data row.
+func purchaseSupplierRowCells(row dto.PurchaseSupplierRowDTO, seq int) []interface{} {
+	productName := "-"
+	if row.Product != nil && strings.TrimSpace(row.Product.Name) != "" {
+		productName = row.Product.Name
+	}
+	warehouseName := "-"
+	if row.Warehouse != nil && strings.TrimSpace(row.Warehouse.Name) != "" {
+		warehouseName = row.Warehouse.Name
+	}
+
+	return []interface{}{
+		seq,
+		safePurchaseSupplierText(row.ReceiveDate),
+		safePurchaseSupplierText(row.PoDate),
+		safePurchaseSupplierText(row.PoNumber),
+		productName,
+		warehouseName,
+		row.Qty,
+		row.UnitPrice,
+		row.PurchaseValue,
+		row.TransportUnitPrice,
+		row.TransportValue,
+		row.TotalAmount,
+		safePurchaseSupplierText(row.Expedition),
+		safePurchaseSupplierText(row.DeliveryNumber),
+	}
+}
+
+func purchaseSupplierName(item dto.PurchaseSupplierDTO) string {
+	if item.Supplier != nil && strings.TrimSpace(item.Supplier.Name) != "" {
+		return item.Supplier.Name
+	}
+	return "Supplier"
+}
+
+func sanitizePurchaseSupplierSheetName(name string) string {
+	replacer := strings.NewReplacer(
+		":", " ", "\\", " ", "/", " ",
+		"?", " ", "*", " ", "[", " ", "]", " ",
+	)
+	sanitized := strings.TrimSpace(replacer.Replace(name))
+	if sanitized == "" {
+		return "Sheet"
+	}
+	runes := []rune(sanitized)
+	if len(runes) > 31 {
+		return string(runes[:31])
+	}
+	return sanitized
+}
+
+func safePurchaseSupplierText(s string) string {
+	t := strings.TrimSpace(s)
+	if t == "" {
+		return "-"
+	}
+	return t
+}