import {
  getColumnByName,
  getCellRangeByColumnName,
  getCellValueByColumnName,
  getColumnValuesByName,
} from "./sheetUtils"


export function newSkuHandler(e: GoogleAppsScript.Events.SheetsOnEdit) {
  var sheet = SpreadsheetApp.getActive().getActiveSheet()
  if (sheet.getName() !== "product_inventory") {
    console.log("skipping edit on sheet " + sheet.getName())
    return
  }
  let row = e.range.getRowIndex()
  let idCell = getCellRangeByColumnName(sheet, "#", row)
  let idCellValue = idCell.getValue()
  console.log("idCellValue = '" + idCellValue + "'")
  if (idCellValue != "?" && idCellValue != "n") {
    console.log("new ID was not requested, returning")
    return
  }
  newSku(row)
}

export function newSku(row: number) {
  let sheet = SpreadsheetApp.getActive().getSheetByName("product_inventory")
  let skuPrefixCol = getColumnByName(sheet, "sku_prefix")
  console.log("skuPrefixCol: " + skuPrefixCol)
  let idCol = getColumnByName(sheet, "#")
  console.log("idCol: " + idCol)
  let idCell = getCellRangeByColumnName(sheet, "#", row)
  let safeToOverwrite: string[] = ["?", "n", ""]
  let idCellValue = idCell.getValue()
  let skuPrefixCellValue = getCellValueByColumnName(sheet, "sku_prefix", row)
  console.log("skuPrefixCellValue = '" + skuPrefixCellValue + "'")
  if (!safeToOverwrite.includes(idCellValue)) {
    console.log("ID '" + idCellValue + "' is not safe to overwrite, returning")
    return
  }
  var skuArray = getColumnValuesByName(sheet, "sku")
  var regExp = new RegExp(`^` + skuPrefixCellValue + `-0*(\\d+)$`)
  console.log("regExp: " + regExp.toString())
  var maxId = 0
  for (let i = 0; i < skuArray.length; i++) {
    console.log("checking row " + (i + 1))
    if (null == skuArray[i] || String(skuArray[i]) == "") {
      console.log("SKU cell looks null")
      continue
    }
    console.log("SKU cell: '" + skuArray[i] + "'")
    var match = regExp.exec(String(skuArray[i]))
    if (null === match) {
      console.log("SKU cell did not match")
      continue
    }
    let numId = Number(match[1])
    console.log("match: '" + match + "', numId: " + numId)
    maxId = Math.max(numId, maxId)
    console.log("numId: " + numId + ", maxId: " + maxId)
  }
  let newId = maxId + 1
  console.log("newId: " + newId)
  idCell.setValue(newId)
}