Add an example code for generating a report.

Author: roywangaspose

samples/report-generator.go

@@ -0,0 +1,146 @@
+package main
+
+import (
+	"fmt"
+	"time"
+
+	. "github.com/aspose-cells/aspose-cells-go-cpp/v25"
+)
+
+type ReportGenerator struct {
+	workbook  *Workbook
+	worksheet *Worksheet
+}
+
+type SaleRecord struct {
+	Date     time.Time
+	Product  string
+	Quantity int32
+	Price    float64
+}
+
+func (reportGenerator *ReportGenerator) initialization() {
+	reportGenerator.workbook, _ = NewWorkbook()
+	worksheets, _ := reportGenerator.workbook.GetWorksheets()
+	reportGenerator.worksheet, _ = worksheets.Get_Int(0)
+}
+func NewReportGenerator() *ReportGenerator {
+	reportGenerator := &ReportGenerator{}
+	reportGenerator.initialization()
+	return reportGenerator
+}
+
+func (reportGenerator *ReportGenerator) GenerateSaleReport(records []SaleRecord) {
+	reportGenerator.setupReportHeader()
+	reportGenerator.fillSalesData(records)
+	reportGenerator.addSummaryStatistics(records)
+	reportGenerator.createCharts(records)
+	reportGenerator.formatReport()
+}
+func (reportGenerator *ReportGenerator) createHeaderStyle() *Style {
+	style, _ := reportGenerator.workbook.CreateStyle()
+	font, _ := style.GetFont()
+	font.SetIsBold(true)
+	font.SetSize(16)
+	style.SetHorizontalAlignment(TextAlignmentType_Center)
+	return style
+}
+func (reportGenerator *ReportGenerator) setupReportHeader() {
+	cells, _ := reportGenerator.worksheet.GetCells()
+	cell, _ := cells.Get_String("A1")
+	cell.PutValue_String("Sales Report")
+	cell.SetStyle_Style(reportGenerator.createHeaderStyle())
+	cells.Merge_Int_Int_Int_Int(0, 0, 1, 5)
+}
+
+func (reportGenerator *ReportGenerator) fillSalesData(saleRecords []SaleRecord) {
+	headers := []string{"date", "product", "Quantity", "Unit Price", "Total Amount"}
+	cells, _ := reportGenerator.worksheet.GetCells()
+	rows, _ := cells.GetRows()
+	row, _ := rows.Get(2)
+	for i := 0; i < len(headers); i++ {
+		cell, _ := row.Get(int32(i))
+		cell.PutValue_String(headers[i])
+	}
+
+	var rowIndex int32 = 3
+	for i, record := range saleRecords {
+		row, _ := rows.Get(rowIndex + int32(i))
+		cell, _ := row.Get(0)
+		cell.PutValue_Date(record.Date)
+		cell, _ = row.Get(1)
+		cell.PutValue_String(record.Product)
+		cell, _ = row.Get(2)
+		cell.PutValue_Int(record.Quantity)
+		cell, _ = row.Get(3)
+		cell.PutValue_Double(record.Price)
+		cell, _ = row.Get(4)
+		print(rowIndex + int32(i))
+		cell.SetFormula_String(fmt.Sprintf("=C%d*D%d", rowIndex+int32(i)+1, rowIndex+int32(i)+1))
+	}
+
+}
+func (reportGenerator *ReportGenerator) addSummaryStatistics(records []SaleRecord) {
+	dataRowCount := len(records)
+	summaryRow := dataRowCount + 4
+
+	cells, _ := reportGenerator.worksheet.GetCells()
+	cell, _ := cells.Get_Int_Int(int32(summaryRow), 0)
+	cell.PutValue_String("Summary Statistics:")
+	cell, _ = cells.Get_Int_Int(int32(summaryRow)+1, 0)
+	cell.PutValue_String("Total Sales:")
+	cell, _ = cells.Get_Int_Int(int32(summaryRow)+1, 1)
+	cell.SetFormula_String(fmt.Sprintf("=SUM(E4:E%d)", dataRowCount+3))
+	cell, _ = cells.Get_Int_Int(int32(summaryRow)+2, 0)
+	cell.PutValue_String("Average Sales:")
+	cell, _ = cells.Get_Int_Int(int32(summaryRow)+2, 1)
+	cell.SetFormula_String(fmt.Sprintf("=AVERAGE(E4:E%d)", dataRowCount+3))
+}
+
+func (reportGenerator *ReportGenerator) createCharts(records []SaleRecord) {
+	chartRow := int32(len(records) + 8)
+	charts, _ := reportGenerator.worksheet.GetCharts()
+	chartIndex, _ := charts.Add_ChartType_Int_Int_Int_Int(ChartType_Column, chartRow, 0, chartRow+10, 5)
+	chart, _ := charts.Get_Int(chartIndex)
+	nseries, _ := chart.GetNSeries()
+	nseries.Add_String_Bool(fmt.Sprintf("=Sheet1!$E$4:$E$%d", len(records)+3), true)
+	nseries.SetCategoryData(fmt.Sprintf("=Sheet1!$B$4:$B$%d", len(records)+3))
+	chart_title, _ := chart.GetTitle()
+	chart_title.SetText("Product sales comparison")
+}
+
+func (reportGenerator *ReportGenerator) formatReport() {
+	// Set  column width
+	cells, _ := reportGenerator.worksheet.GetCells()
+	cells.SetColumnWidth(0, 15)
+	cells.SetColumnWidth(1, 20)
+	cells.SetColumnWidth(2, 10)
+	cells.SetColumnWidth(3, 10)
+	cells.SetColumnWidth(4, 12)
+
+	// Set number Format
+	numberStyle, _ := reportGenerator.workbook.CreateStyle()
+	numberStyle.SetCustom_String("#,##0.00")
+	columns, _ := cells.GetColumns()
+	column, _ := columns.Get(3)
+	column.SetStyle(numberStyle)
+	column, _ = columns.Get(4)
+	column.SetStyle(numberStyle)
+}
+func (reportGenerator *ReportGenerator) SaveReport(filePath string) {
+	reportGenerator.workbook.Save_String(filePath)
+}
+
+func GenerateReport() {
+	t1, _ := time.ParseInLocation("2006-01-02", "2024-01-01", time.Local)
+	t2, _ := time.ParseInLocation("2006-01-02", "2024-01-02", time.Local)
+	t3, _ := time.ParseInLocation("2006-01-02", "2024-01-03", time.Local)
+	records := []SaleRecord{
+		{t1, "Product A", 100, 25.5},
+		{t2, "Product B", 150, 30.0},
+		{t3, "Product A", 80, 25.5},
+	}
+	generator := NewReportGenerator()
+	generator.GenerateSaleReport(records)
+	generator.SaveReport("Data/Output/SalesAnalysisReport.xlsx")
+}