getValues(
  '18129',
  'mtuchi-testing!A:AD',
  state => {
    const {
      taskId,
      data: { values },
    } = state;

    const rowIndex = values.findIndex(row => row['0'] === taskId);

    if (rowIndex !== -1) {
       state.updateRange = `mtuchi-testing!A${rowIndex + 1}:AD${rowIndex + 1}`;
       state.toAppend = state.gsheetValues;
       state.toUpsert = [];
    } else {
       state.updateRange =  'mtuchi-testing!A2:AD2';
       state.toAppend= [];
       state.toUpsert= state.gsheetValues;
   }

    return state;
  }
);

batchUpdateValues({
      spreadsheetId: '18129',
      range: $.updateRange,
      values: $.toUpdate,
 })

appendValues({
  spreadsheetId: '18129',
      range: $.updateRange,
  values: $.toAppend
})