use column names for newSku

src/newSku.ts

@@ -4,11 +4,10 @@ function newSku(e: GoogleAppsScript.Events.SheetsOnEdit) {
     console.log("skipping edit on sheet " + sheet.getName())
     return
   }
-  var row = e.range.getRow()
-  var idCell = sheet.getRange(row, 16).getCell(1, 1)
-  var idCellValue = idCell.getValue()
-  var skuPrefixCell = sheet.getRange(row, 15).getCell(1, 1)
-  var skuPrefixCellValue = skuPrefixCell.getValue()
+  let row = e.range.getRow()
+  let idCell = getCellRangeByColumnName(sheet, "#", row)
+  let idCellValue = idCell.getValue()
+  let skuPrefixCellValue = getCellValueByColumnName(sheet, "sku_prefix", row)
   console.log("skuPrefixCellValue = '" + skuPrefixCellValue + "'")
   console.log("idCellValue = '" + idCellValue + "'")
   if (idCellValue != "?" && idCellValue != "n") {

src/sheetUtils.ts

@@ -0,0 +1,43 @@
+function getCellRangeByColumnName(
+  sheet: GoogleAppsScript.Spreadsheet.Sheet,
+  columnName: string,
+  row: number
+) {
+  let data = sheet.getDataRange().getValues()
+  let column = data[0].indexOf(columnName)
+  if (column != -1) {
+    return sheet.getRange(row, column + 1, 1, 1)
+  }
+}
+
+function getCellValueByColumnName(
+  sheet: GoogleAppsScript.Spreadsheet.Sheet,
+  columnName: string,
+  row: number
+) {
+  let cell = getCellRangeByColumnName(sheet, columnName, row)
+  if (cell != null) {
+    return cell.getValue()
+  }
+}
+
+function getColumnRangeByName(
+  sheet: GoogleAppsScript.Spreadsheet.Sheet,
+  columnName: string
+) {
+  let data = sheet.getRange("A1:1").getValues()
+  let column = data[0].indexOf(columnName)
+  if (column != -1) {
+    return sheet.getRange(2, column + 1, sheet.getMaxRows())
+  }
+}
+
+function getColumnValuesByName(
+  sheet: GoogleAppsScript.Spreadsheet.Sheet,
+  columnName: string
+) {
+  let column = getColumnRangeByName(sheet, columnName)
+  if (column != null) {
+    return column.getValues()
+  }
+}