Convert Google Docs/Slides/Sheets to PDF

drivedocs2pdf.js

function clear(){
  var pdf_folderid="XXXXXXX";
  _clearPDFs(pdf_folderid);
}
function convert(){
  var src_folderid="YYYYYYY";
  var pdf_folderid="XXXXXXX";
  _doc2pdf(src_folderid,pdf_folderid);
}

function exec() {
  clear();
  convert();
}

// convert all docs in the given folder, and store in the same folder.
function _doc2pdf(src_folderid, pdf_folderid){
  var src_folder=DriveApp.getFolderById(src_folderid);
  var pdf_folder=DriveApp.getFolderById(pdf_folderid);
  var iterator=src_folder.getFiles();
  while( iterator.hasNext()){
    //Logger.log(iterator.next());
    var file =iterator.next();
    var type=file.getMimeType();
    Logger.log(file.getName()+":"+type)
    //Logger.log(file.getName());
    if("application/vnd.google-apps.document"== type){
      // for handson labs (Document)
      pdf_folder.createFile(file.getAs("application/pdf")).setName(file.getName()+".pdf"); 
    }else if("application/vnd.google-apps.presentation" == type){
      // for presentation (Slide)
      pdf_folder.createFile(file.getAs("application/pdf")).setName(file.getName()+".pdf"); 
    }
  }  
}

// trash all .pdf files in given folder
function _clearPDFs(pdf_folderid){
Logger.log(pdf_folderid);
  var pdf_folder=DriveApp.getFolderById(pdf_folderid);
  var iterator=pdf_folder.getFiles();
  while(iterator.hasNext()){
    //Logger.log(iterator.next());
    var file =iterator.next();
    var type=file.getMimeType();
    if("application/pdf"== type){
      file.setTrashed(true);
      Logger.log("Trashed : "+file.getName() +"("+file.getId()+")");
    }
  }
}