feat: excel importer

internal/extras/excel/import.go

@@ -0,0 +1,53 @@
+package excel
+
+import (
+	"fmt"
+	"log/slog"
+
+	"github.com/xuri/excelize/v2"
+)
+
+type Importer struct {
+	SheetName       string
+	Loader          func(rowIndex int, row []string) error
+	StartFromRowIdx int
+}
+
+func ImportEntitiesFromSpreadsheet(path string, importers ...Importer) error {
+	for _, importer := range importers {
+		err := ImportEntitiesFromSpreadsheet(path, importer)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func ImportFromSpreadsheet(filepath string, importer Importer) error {
+	f, err := excelize.OpenFile(filepath)
+	defer func() {
+		err := f.Close()
+		if err != nil {
+			slog.Error(fmt.Sprintf("Failed to close file: %s", err))
+		}
+	}()
+
+	if err != nil {
+		return err
+	}
+
+	rows, err := f.GetRows(importer.SheetName)
+
+	if err != nil {
+		return err
+	}
+
+	for i, row := range rows {
+		err := importer.Loader(i, row)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}