function doPost(e) {
  var sheet = SpreadsheetApp.getActiveSpreadsheet().getActiveSheet();
  var data = JSON.parse(e.postData.contents);
  if (sheet.getLastRow() === 0) {
    sheet.appendRow(["Form ID","Date","Customer Code","Customer Name",
      "Service Start","Service End","Part Number","Serial Numbers",
      "Lot Numbers","Mfg Date","Inspected","Approved","Rejected",
      "Reworked","Defect Summary","# People","Total Hours","Notes","Submitted By"]);
  }
  sheet.appendRow([data.formId,data.submitDate,data.customerCode,
    data.customerName,data.serviceStart,data.serviceEnd,data.partNumber,
    data.serialNumbers,data.lotNumbers,data.mfgDate,data.inspected,
    data.approved,data.rejected,data.reworked,data.defectSummary,
    data.numPeople,data.totalHours,data.notes,data.submittedBy]);
  return ContentService.createTextOutput(JSON.stringify({result:"ok"}))
    .setMimeType(ContentService.MimeType.JSON);
}