do formatting to heading row of empty worksheet

cmd/main/main.go

@@ -162,16 +162,35 @@ func main() {
 
 		// Run code to add column names to the first row of the workbook based off the keyOrder, if defined
 		if len(config.keyOrder) > 0 {
-
-			// Create a slice to hold the values
 			var columnHeadings []string
-
-			// Iterate over the map and append each value to the slice
 			for _, value := range config.keyOrder {
 				columnHeadings = append(columnHeadings, value)
 			}
-
 			createHeadingRow(xlsx, worksheetName, columnHeadings)
+
+			headerStyle, err := xlsx.NewStyle(&excelize.Style{
+				Font: &excelize.Font{
+					Bold: true,
+				},
+			})
+			if err != nil {
+				fmt.Printf("Error generating header style : '%s'\n", err)
+			} else {
+				// Set the style if there was no error generating it
+				if boldTopRow {
+					err = xlsx.SetRowStyle(worksheetName, 1, 1, headerStyle)
+					if err != nil {
+						fmt.Printf("Error setting header style : '%s'\n", err)
+					}
+				}
+			}
+
+			if autoWidth {
+				err = SetColAutoWidth(xlsx, worksheetName)
+				if err != nil {
+					fmt.Printf("Error setting auto width : '%s'\n", err)
+				}
+			}
 		}
 
 		// Close off the file
@@ -224,15 +243,15 @@ func main() {
 	})
 	if err2 != nil {
 		fmt.Printf("Error generating header style : '%s'\n", err2)
-	}
-
-	// Set the style
+	} else {
+		// Set the style if there was no error generating it
 		if boldTopRow {
 			err = xlsx.SetRowStyle(worksheetName, 1, 1, headerStyle)
 			if err != nil {
 				fmt.Printf("Error setting header style : '%s'\n", err)
 			}
 		}
+	}
 
 	// Freeze top row if requested, see https://xuri.me/excelize/en/utils.html#SetPanes
 	if freezeTopRow {