I'm trying to download a PDF file from Drive, in a web app using GAS. A PDF file is download, but the pages are blank. I can open the file in a browser or in Adobe Acrobat.
In GAS, I get the file using Drive API.
function downloadPDF(){
let url = "https://www.googleapis.com/drive/v3/files/<file id>?supportsAllDrives=true&alt=media";
let response = getGoogleAPI(url); // A function I created call the Drive API
Logger.log("Response: %s", response); // This shows binary data
return Utilities.base64Encode(response.getContent());
}
In the front end I have the following code:
function getPDF(){
google.script.run.withSuccessHandler(function(response){
$("#overlay").hide();
let decoded = atob(response);
console.log(decoded); // This shows the same binary data as from Apps Script
let blob = new Blob(decoded, {type: "application/pdf"});
const objectUrl = URL.createObjectURL(blob);
const link = document.createElement('a')
link.setAttribute('href', objectUrl)
link.setAttribute('download', "test.pdf")
link.style.display = 'none'
document.body.appendChild(link)
link.click()
document.body.removeChild(link)
}).downloadPDF();
}
Does anyone know what the problem is?
Thanks in advance!
I saw this post at read the reply from #Tanaike.
I changed this line of code:
link.setAttribute('href', objectUrl)
To this:
link.setAttribute('href', 'data:text/html;base64,' + response)
And it worked!
Related
I need to modify my Apps Script Google Docs add-on project to download a file generated in our server (authentication needed) to the local machine. Didn't found a way to download that file directly into the local machine. So trying to download it first into the drive, then download the drive file into the local machine.
I have currently implemented to download that file into the Google Drive, now looking for a way to download it to the local machine. Searched for ways to do it with the Drive api. But didn't found a way yet.
The downloading file will be in below formats.
.pdf, .epub, .jpg, .png, .zip, .mobi, .indd
Found this article, but it is only for downloading text content.
This is my code for retrieving the file from our server, download it to the drive.
function downloadOutput(selectedFile){
var mimeType;
var template = new Template();
var documentProperties = PropertiesService.getDocumentProperties();
var jobFolderPath = replaceWhiteSpace(documentProperties.getProperty('JOB_FOLDER_PATH'));
var pathParts = jobFolderPath.split("/");
var outputFolderName = pathParts.pop();
var rootFolderID = getWriterRootFolder();
var filename = replaceWhiteSpace(selectedFile);
if (selectedFile.includes('.pdf')){
mimeType = 'application/pdf';
}
else if(selectedFile.includes('.epub')){
mimeType = 'application/epub+zip';
}
else if (selectedFile.includes('.jpg')){
mimeType = 'image/jpeg';
}
else if(selectedFile.includes('.png')){
mimeType = 'image/png';
}
else if(selectedFile.includes('.zip')){
mimeType= 'application/zip';
}
else if(selectedFile.includes('.mobi')){
mimeType= 'application/x-mobipocket-ebook';
}
else if(selectedFile.includes('.indd')){
mimeType = 'application/x-indesign';
}
//This is for retrieving the selectedFile from our server.
var response = sendRequest(template.server, template.customer, "/api/v2/","GET", "files" + jobFolderPath + "/"+ filename);
var output = {
title: selectedFile,
parents: [{'id':rootFolderID}],
mimeType: mimeType
};
var outputFile = Drive.Files.insert(output, response.getBlob());
//some tries to get a download from the drive file, but not worked.
var url = "https://www.googleapis.com/drive/v3/files/" + outputFile.id + "?alt=media&mimeType="+ mimeType;
var blob = UrlFetchApp.fetch(url, {
method: "get",
headers: {"Authorization": "Bearer " + ScriptApp.getOAuthToken()},
muteHttpExceptions: true
});
var rrr = UrlFetchApp.fetch(outputFile.downloadUrl,
{
method :"get",
headers: {"Authorization": "Bearer " + ScriptApp.getOAuthToken() }
});
}
Please suggest a way to download the drive file to the 'Downloads' folder in local machine or download the server file directly into the local machine without saving it in the drive.
Thanks in advance.
As long as Apps Script is server side executed, there is no direct way to use it to download to your machine.
But, as you have your file is in your Drive, what about using one of the client libraries for Google APIs, in your case Drive API, to download it directly to your machine?
The steps are easy, look for the file, grab the ID and download to your machine.
Google has specific guides for Download files, this includes Download a general file from Google Drive and Download Google Workspace Document, and for search for a specific file, via name = my_server_side_generated_file or mimeType = 'application/epub+zip', or whatever query method you want to use.
This is the simple use case for downloading a file in Node.js , but you have examples also for Python and Java.
var fileId = '0BwwA4oUTeiV1UVNwOHItT0xfa2M';
var dest = fs.createWriteStream('/tmp/photo.jpg');
drive.files.get({
fileId: fileId,
alt: 'media'
})
.on('end', function () {
console.log('Done');
})
.on('error', function (err) {
console.log('Error during download', err);
})
.pipe(dest);
Documentation:
Drive API Guides
Google APIs Node.js Client
I've got a script that processes files uploaded to Google Drive and if they are not pdf files it converts them into Google Docs, then converts the Google Doc file to pdf. This all works as required.
The problem I have is if the file to be converted to Google Docs is an image file, the "new" Google Docs file not only contains the image but also text extracted via OCR (I assume). I've tried setting that option to false to no avail.
Please help, all I want is to convert image files to pdf without extracting any text from the images.
function afterUpload(form_upload_items, suid, lname,scans_folder){
var pdf_file_ids, pdf_files, processed_folder, converted_file;
form_upload_items.forEach (function (form_upload_item_id) {
var uploaded_file = DriveApp.getFileById(form_upload_item_id);
const uft = uploaded_file.getMimeType();
Logger.log("item has name of '%s' and is of type '%s'", uploaded_file.
getName(), uft);
processed_folder = scans_folder.getFoldersByName("Processed").next();
var file_description = uploaded_file.getDescription();
if (file_description==null){
file_description=" "
}
if (file_description.includes("Scanned")){
Logger.log("Already scanned '%s'", uploaded_file.getName());
}
else{
uploaded_file.setDescription("Scanned");
file_description = uploaded_file.getDescription();
}
if (file_description.includes("Processed")) {
Logger.log("Already processed %s", uploaded_file.getName());
}
else{
if (uft !=MimeType.PDF && !file_description.includes("Converted")){ // convert file to pdf if required
//Convert to Google docs
const file_blob = uploaded_file.getBlob();
const options ={
ocr: false,
supportsAllDrives: true
}
const res = Drive.Files.insert({ // Drive API of Advanced Google services is used.
"mimeType": "application/vnd.google-apps.document",
"title": uploaded_file.getName() + "_gdocs_conv"
}, file_blob,options);
uploaded_file.moveTo(processed_folder);
uploaded_file.setDescription(file_description+", Converted");
converted_file = DriveApp.getFileById(res.id);
converted_file.moveTo(processed_folder);
const blobPDF = converted_file.getAs(MimeType.PDF);
//finally convert google docs to PDF
uploaded_file = scans_folder.createFile(blobPDF);
Logger.log("Converted %s to pdf",uploaded_file.getName());
}
}
});
const query = "title contains '" +suid+"'"
const scanned_files = scans_folder.searchFiles(query);
pdf_file_ids = [];
pdf_files = [];
while (scanned_files.hasNext()){
const scanned_file = scanned_files.next();
Logger.log("%s %s",scanned_file.getName(), scanned_file.getDescription());
pdf_file_ids.push(scanned_file.getId());
pdf_files.push(scanned_file);
}
var function_result = {};
var documents_folder = scans_folder.getParents().next();
function_result["file_name_prefix"] = suid+" "+lname;
function_result["pdf_files"] = pdf_file_ids;
function_result["documents_folder_id"] = documents_folder.getId();
}
The problem is that you are converting image files into a Google Document, instead of creating a file type that could be converted into a PDF by Google Drive. To do this, insert the image to this newly created file then convert the resulting document into a PDF. Depending on the result that you requires you might create an HTML file, Google Document or a Google Slides (Google Drawings might be the best but there isn't a Google Apps Script service for that).
The "easier" solution is to create an HTML file. Here is a sample adapted from Tanaike's answer to Show images inside a pdf created with Gloogle Apps Script Blob
function myFunction() {
// image
var url = "https://cdn.sstatic.net/Sites/stackoverflow/company/img/logos/so/so-icon.png?v=c78bd457575a";
var blob = UrlFetchApp.fetch(url).getBlob();
var b64 = blob.getContentType() + ';base64,'+ Utilities.base64Encode(blob.getBytes());
var html =`<img src="data:${ b64 }">`;
var h = HtmlService.createHtmlOutput(html);
// Create from HTML to PDF file.
DriveApp.createFile(h.getAs("application/pdf").setName("text.pdf"));
}
Related
getBlob() causing "Invalid image data." Error. Google Apps Script
is there a way to create an image (e.g. a png) from a google document?
I really mean an image, not just a pdf. GetAS only creates pdf, but returns an error if contentType is set to image/png or other equivalent formats.
My (actually trivial) code is
function convertFile() {
var SOURCE_TEMPLATE = "1HvqYidpUpihzo_HDAQ3zE5ScMVsHG9NNlwPkN80GHK0";
var TARGET_FOLDER = "1Eue-3tJpE8sBML0qo6Z25G0D_uuXZjHZ";
var source = DriveApp.getFileById(SOURCE_TEMPLATE);
var targetFolder = DriveApp.getFolderById(TARGET_FOLDER);
var target = source.makeCopy(source,targetFolder);
var newFile = DriveApp.createFile(target.getAs('image/png'));
}
When I run this code, I get the following error (my translation):
The conversion from application/vnd.google-apps.document to image/png is not supported.
Ty
How about this answer?
Reason of error:
makeCopy() returns File object. getAs() cannot be used for this. By this, the error occurs.
Workaround:
Unfortunately, in the current stage, Google Document cannot be directly exported as PNG images. So it is required to think of workarounds. Google Document can be converted to PDF. This answer uses this. As a workaround, I would like to propose to use an external API which is ConvertAPI. I thought that using the external API, the script becomes simple. This a method (PDF to PNG API) of API can be converted from PDF data to PNG data.
When you try this, for example, you can also test this using "Free Package". When you try using "Free Package", please Sign Up at "Free Package" and retrieve your Secret key.
Sample script:
Before you run this script, please retrieve your Secret key and set it.
var secretkey = "###"; // Please set your secret key.
var SOURCE_TEMPLATE = "1HvqYidpUpihzo_HDAQ3zE5ScMVsHG9NNlwPkN80GHK0";
var TARGET_FOLDER = "1Eue-3tJpE8sBML0qo6Z25G0D_uuXZjHZ";
var url = "https://v2.convertapi.com/convert/pdf/to/png?Secret=" + secretkey;
var options = {
method: "post",
payload: {File: DriveApp.getFileById(SOURCE_TEMPLATE).getBlob()},
}
var res = UrlFetchApp.fetch(url, options);
res = JSON.parse(res.getContentText());
res.Files.forEach(function(e) {
var blob = Utilities.newBlob(Utilities.base64Decode(e.FileData), "image/png", e.FileName);
DriveApp.getFolderById(TARGET_FOLDER).createFile(blob);
});
References:
makeCopy()
getAs()
ConvertAPI
PDF to PNG API of ConvertAPI
Updated on January 11, 2023:
In the current stage, Google Apps Script can use V8 runtime. By this, there are some Javascript libraries that can be used with Google Apps Script. Ref1, Ref2 In this question, in the current stage, by using pdf-lib, all pages in a PDF file can be converted to PNG images using Google Apps Script. The sample script is as follows.
Sample script:
This method uses Drive API. Please enable Drive API at Advanced Google services.
Please set SOURCE_TEMPLATE and TARGET_FOLDER, and run main().
/**
* This is a method for converting all pages in a PDF file to PNG images.
* PNG images are returned as BlobSource[].
* IMPORTANT: This method uses Drive API. Please enable Drive API at Advanced Google services.
*
* #param {Blob} blob Blob of PDF file.
* #return {BlobSource[]} PNG blobs.
*/
async function convertPDFToPNG_(blob) {
// Convert PDF to PNG images.
const cdnjs = "https://cdn.jsdelivr.net/npm/pdf-lib/dist/pdf-lib.min.js";
eval(UrlFetchApp.fetch(cdnjs).getContentText()); // Load pdf-lib
const setTimeout = function (f, t) { // Overwrite setTimeout with Google Apps Script.
Utilities.sleep(t);
return f();
}
const data = new Uint8Array(blob.getBytes());
const pdfData = await PDFLib.PDFDocument.load(data);
const pageLength = pdfData.getPageCount();
console.log(`Total pages: ${pageLength}`);
const obj = { imageBlobs: [], fileIds: [] };
for (let i = 0; i < pageLength; i++) {
console.log(`Processing page: ${i + 1}`);
const pdfDoc = await PDFLib.PDFDocument.create();
const [page] = await pdfDoc.copyPages(pdfData, [i]);
pdfDoc.addPage(page);
const bytes = await pdfDoc.save();
const blob = Utilities.newBlob([...new Int8Array(bytes)], MimeType.PDF, `sample${i + 1}.pdf`);
const id = DriveApp.createFile(blob).getId();
Utilities.sleep(3000); // This is used for preparing the thumbnail of the created file.
const link = Drive.Files.get(id, { fields: "thumbnailLink" }).thumbnailLink;
if (!link) {
throw new Error("In this case, please increase the value of 3000 in Utilities.sleep(3000), and test it again.");
}
const imageBlob = UrlFetchApp.fetch(link.replace(/\=s\d*/, "=s1000")).getBlob().setName(`page${i + 1}.png`);
obj.imageBlobs.push(imageBlob);
obj.fileIds.push(id);
}
obj.fileIds.forEach(id => DriveApp.getFileById(id).setTrashed(true));
return obj.imageBlobs;
}
// Please run this function.
async function myFunction() {
const SOURCE_TEMPLATE = "1HvqYidpUpihzo_HDAQ3zE5ScMVsHG9NNlwPkN80GHK0";
const TARGET_FOLDER = "1Eue-3tJpE8sBML0qo6Z25G0D_uuXZjHZ";
// Use a method for converting all pages in a PDF file to PNG images.
const blob = DriveApp.getFileById(SOURCE_TEMPLATE).getBlob();
const imageBlobs = await convertPDFToPNG_(blob);
// As a sample, create PNG images as PNG files.
const folder = DriveApp.getFolderById(TARGET_FOLDER);
imageBlobs.forEach(b => folder.createFile(b));
}
When this script is run, all pages of the inputted PDF file are converted to PNG images, and those images are created in the destination folder.
Note:
I think that the above script works. But, in this case, when you directly copy and paste the Javascript retrieved from https://cdn.jsdelivr.net/npm/pdf-lib/dist/pdf-lib.min.js to your Google Apps Script project, the process cost for loading it can be reduced.
References:
pdf-lib
copyPages of pdf-lib
addPage of pdf-lib
I know this is an older question, but I thought I'd answer, since I believe I've found a solution that doesn't involve paying for a third-party subscription.
This can be accomplished by accessing the thumbnail of the Doc and creating a new PNG file from that thumbnail. Try this:
function convertFile() {
var SOURCE_TEMPLATE = "1HvqYidpUpihzo_HDAQ3zE5ScMVsHG9NNlwPkN80GHK0";
var TARGET_FOLDER = "1Eue-3tJpE8sBML0qo6Z25G0D_uuXZjHZ";
var source = DriveApp.getFileById(SOURCE_TEMPLATE).getThumbnail().getAs('image/png');
var targetFolder = DriveApp.getFolderById(TARGET_FOLDER);
TARGET_FOLDER.createFile(source);
}
However, I've found that getting the thumbnail of the Doc is not as high quality as getting the thumbnail of a PDF created from the Doc. You can try the code below to compare which version of the new PNG you prefer.
To do this, you will also need to enable Advanced Services on your project, specifically the Drive API service. To do this, follow these instructions to add a new Service to your Google Apps Script project:
Open the Apps Script project.
At the left, click Editor < >.
At the left, next to Services, click Add a service +.
Select Drive API and click Add.
Once you do that, you'll be able to use the Drive command in your script, which is different than DriveApp. Note also the update to source.makeCopy() to only include the TARGET_FOLDER:
function convertFile() {
var SOURCE_TEMPLATE = "1HvqYidpUpihzo_HDAQ3zE5ScMVsHG9NNlwPkN80GHK0";
var TARGET_FOLDER = "1Eue-3tJpE8sBML0qo6Z25G0D_uuXZjHZ";
var source = DriveApp.getFileById(SOURCE_TEMPLATE);
var targetFolder = DriveApp.getFolderById(TARGET_FOLDER);
var target = source.makeCopy(targetFolder);
var pdfBlob = target.getAs(MimeType.PDF);
var newPDF = TARGET_FOLDER.createFile(pdfBlob).setName('Some Name.pdf');
var newId = newPDF.getId();
Drive.Files.update({
title: newPDF.getName(), mimeType: MimeType.PDF
}, newId, pdfBlob);
var newFile = DriveApp.getFileById(newId).getThumbnail().getAs('image/png');
TARGET_FOLDER.createFile(newFile);
target.setTrashed(true);
newPDF.setTrashed(true);
}
This code will create a copy of your Google Doc file, convert it to a PDF, then grab the thumbnail of the PDF as a PNG, and then delete the copy of the Doc file and the PDF that were created.
The Drive.Files.update() function is the critical part of this code, as it finalizes the creation of the PDF file in your Drive. Trying to run the code without that portion will just return the new PDF file as null since the new PDF hasn't completely finished being created at that point.
Hope this helps!
is there a way to create an image (e.g. a png) from a google document?
I really mean an image, not just a pdf. GetAS only creates pdf, but returns an error if contentType is set to image/png or other equivalent formats.
My (actually trivial) code is
function convertFile() {
var SOURCE_TEMPLATE = "1HvqYidpUpihzo_HDAQ3zE5ScMVsHG9NNlwPkN80GHK0";
var TARGET_FOLDER = "1Eue-3tJpE8sBML0qo6Z25G0D_uuXZjHZ";
var source = DriveApp.getFileById(SOURCE_TEMPLATE);
var targetFolder = DriveApp.getFolderById(TARGET_FOLDER);
var target = source.makeCopy(source,targetFolder);
var newFile = DriveApp.createFile(target.getAs('image/png'));
}
When I run this code, I get the following error (my translation):
The conversion from application/vnd.google-apps.document to image/png is not supported.
Ty
How about this answer?
Reason of error:
makeCopy() returns File object. getAs() cannot be used for this. By this, the error occurs.
Workaround:
Unfortunately, in the current stage, Google Document cannot be directly exported as PNG images. So it is required to think of workarounds. Google Document can be converted to PDF. This answer uses this. As a workaround, I would like to propose to use an external API which is ConvertAPI. I thought that using the external API, the script becomes simple. This a method (PDF to PNG API) of API can be converted from PDF data to PNG data.
When you try this, for example, you can also test this using "Free Package". When you try using "Free Package", please Sign Up at "Free Package" and retrieve your Secret key.
Sample script:
Before you run this script, please retrieve your Secret key and set it.
var secretkey = "###"; // Please set your secret key.
var SOURCE_TEMPLATE = "1HvqYidpUpihzo_HDAQ3zE5ScMVsHG9NNlwPkN80GHK0";
var TARGET_FOLDER = "1Eue-3tJpE8sBML0qo6Z25G0D_uuXZjHZ";
var url = "https://v2.convertapi.com/convert/pdf/to/png?Secret=" + secretkey;
var options = {
method: "post",
payload: {File: DriveApp.getFileById(SOURCE_TEMPLATE).getBlob()},
}
var res = UrlFetchApp.fetch(url, options);
res = JSON.parse(res.getContentText());
res.Files.forEach(function(e) {
var blob = Utilities.newBlob(Utilities.base64Decode(e.FileData), "image/png", e.FileName);
DriveApp.getFolderById(TARGET_FOLDER).createFile(blob);
});
References:
makeCopy()
getAs()
ConvertAPI
PDF to PNG API of ConvertAPI
Updated on January 11, 2023:
In the current stage, Google Apps Script can use V8 runtime. By this, there are some Javascript libraries that can be used with Google Apps Script. Ref1, Ref2 In this question, in the current stage, by using pdf-lib, all pages in a PDF file can be converted to PNG images using Google Apps Script. The sample script is as follows.
Sample script:
This method uses Drive API. Please enable Drive API at Advanced Google services.
Please set SOURCE_TEMPLATE and TARGET_FOLDER, and run main().
/**
* This is a method for converting all pages in a PDF file to PNG images.
* PNG images are returned as BlobSource[].
* IMPORTANT: This method uses Drive API. Please enable Drive API at Advanced Google services.
*
* #param {Blob} blob Blob of PDF file.
* #return {BlobSource[]} PNG blobs.
*/
async function convertPDFToPNG_(blob) {
// Convert PDF to PNG images.
const cdnjs = "https://cdn.jsdelivr.net/npm/pdf-lib/dist/pdf-lib.min.js";
eval(UrlFetchApp.fetch(cdnjs).getContentText()); // Load pdf-lib
const setTimeout = function (f, t) { // Overwrite setTimeout with Google Apps Script.
Utilities.sleep(t);
return f();
}
const data = new Uint8Array(blob.getBytes());
const pdfData = await PDFLib.PDFDocument.load(data);
const pageLength = pdfData.getPageCount();
console.log(`Total pages: ${pageLength}`);
const obj = { imageBlobs: [], fileIds: [] };
for (let i = 0; i < pageLength; i++) {
console.log(`Processing page: ${i + 1}`);
const pdfDoc = await PDFLib.PDFDocument.create();
const [page] = await pdfDoc.copyPages(pdfData, [i]);
pdfDoc.addPage(page);
const bytes = await pdfDoc.save();
const blob = Utilities.newBlob([...new Int8Array(bytes)], MimeType.PDF, `sample${i + 1}.pdf`);
const id = DriveApp.createFile(blob).getId();
Utilities.sleep(3000); // This is used for preparing the thumbnail of the created file.
const link = Drive.Files.get(id, { fields: "thumbnailLink" }).thumbnailLink;
if (!link) {
throw new Error("In this case, please increase the value of 3000 in Utilities.sleep(3000), and test it again.");
}
const imageBlob = UrlFetchApp.fetch(link.replace(/\=s\d*/, "=s1000")).getBlob().setName(`page${i + 1}.png`);
obj.imageBlobs.push(imageBlob);
obj.fileIds.push(id);
}
obj.fileIds.forEach(id => DriveApp.getFileById(id).setTrashed(true));
return obj.imageBlobs;
}
// Please run this function.
async function myFunction() {
const SOURCE_TEMPLATE = "1HvqYidpUpihzo_HDAQ3zE5ScMVsHG9NNlwPkN80GHK0";
const TARGET_FOLDER = "1Eue-3tJpE8sBML0qo6Z25G0D_uuXZjHZ";
// Use a method for converting all pages in a PDF file to PNG images.
const blob = DriveApp.getFileById(SOURCE_TEMPLATE).getBlob();
const imageBlobs = await convertPDFToPNG_(blob);
// As a sample, create PNG images as PNG files.
const folder = DriveApp.getFolderById(TARGET_FOLDER);
imageBlobs.forEach(b => folder.createFile(b));
}
When this script is run, all pages of the inputted PDF file are converted to PNG images, and those images are created in the destination folder.
Note:
I think that the above script works. But, in this case, when you directly copy and paste the Javascript retrieved from https://cdn.jsdelivr.net/npm/pdf-lib/dist/pdf-lib.min.js to your Google Apps Script project, the process cost for loading it can be reduced.
References:
pdf-lib
copyPages of pdf-lib
addPage of pdf-lib
I know this is an older question, but I thought I'd answer, since I believe I've found a solution that doesn't involve paying for a third-party subscription.
This can be accomplished by accessing the thumbnail of the Doc and creating a new PNG file from that thumbnail. Try this:
function convertFile() {
var SOURCE_TEMPLATE = "1HvqYidpUpihzo_HDAQ3zE5ScMVsHG9NNlwPkN80GHK0";
var TARGET_FOLDER = "1Eue-3tJpE8sBML0qo6Z25G0D_uuXZjHZ";
var source = DriveApp.getFileById(SOURCE_TEMPLATE).getThumbnail().getAs('image/png');
var targetFolder = DriveApp.getFolderById(TARGET_FOLDER);
TARGET_FOLDER.createFile(source);
}
However, I've found that getting the thumbnail of the Doc is not as high quality as getting the thumbnail of a PDF created from the Doc. You can try the code below to compare which version of the new PNG you prefer.
To do this, you will also need to enable Advanced Services on your project, specifically the Drive API service. To do this, follow these instructions to add a new Service to your Google Apps Script project:
Open the Apps Script project.
At the left, click Editor < >.
At the left, next to Services, click Add a service +.
Select Drive API and click Add.
Once you do that, you'll be able to use the Drive command in your script, which is different than DriveApp. Note also the update to source.makeCopy() to only include the TARGET_FOLDER:
function convertFile() {
var SOURCE_TEMPLATE = "1HvqYidpUpihzo_HDAQ3zE5ScMVsHG9NNlwPkN80GHK0";
var TARGET_FOLDER = "1Eue-3tJpE8sBML0qo6Z25G0D_uuXZjHZ";
var source = DriveApp.getFileById(SOURCE_TEMPLATE);
var targetFolder = DriveApp.getFolderById(TARGET_FOLDER);
var target = source.makeCopy(targetFolder);
var pdfBlob = target.getAs(MimeType.PDF);
var newPDF = TARGET_FOLDER.createFile(pdfBlob).setName('Some Name.pdf');
var newId = newPDF.getId();
Drive.Files.update({
title: newPDF.getName(), mimeType: MimeType.PDF
}, newId, pdfBlob);
var newFile = DriveApp.getFileById(newId).getThumbnail().getAs('image/png');
TARGET_FOLDER.createFile(newFile);
target.setTrashed(true);
newPDF.setTrashed(true);
}
This code will create a copy of your Google Doc file, convert it to a PDF, then grab the thumbnail of the PDF as a PNG, and then delete the copy of the Doc file and the PDF that were created.
The Drive.Files.update() function is the critical part of this code, as it finalizes the creation of the PDF file in your Drive. Trying to run the code without that portion will just return the new PDF file as null since the new PDF hasn't completely finished being created at that point.
Hope this helps!
I'm trying to write a Google Apps Script to download all files in a particular Drive folder (likely .csv files). I have found the getDownloadUrl() method but I haven't been able to figure out what to do with it. I'm currently trying the following code, where files is the list of the files in the folder:
while(files.hasNext()) {
var response = UrlFetchApp.fetch(files.next().getDownloadUrl());
Logger.log(response.getContentText());
}
When I try to run the code, however, I get a 401 error which I guess means I lack the proper authorization? But I was under the impression that I wouldn't need to go through all of the OAuth2 steps if everything was taking place within my one Google account. The Google guide to connecting to external APIs makes it look like I should be able to just fetch the url. I've already gotten access to my Drive files, because the download URL does exist when I run that method. What am I missing here? I'm really new to all of this so maybe it's something basic.
Thanks!
EDIT:
I managed to fix the 401 error by modifying the code as follows:
while(files.hasNext()) {
var response = UrlFetchApp.fetch(files.next().getDownloadUrl(),{headers: {Authorization: "Bearer " + ScriptApp.getOAuthToken()}});
Logger.log(response.getContentText());
}
But the issue remains that this only returns the contents to me, rather than downloading the file. How can I initiate a download from the results of this fetch call?
Besides listing all download links, I guess original poster also wants to download files to user's computer (according to earlier discussion).
To do this, encode blob with base 64 in server side (e.g. Google App Script) and download with data URI in client's browser. Below are code for this, with help of this answer.
Google App Script
...
function getBlobInBase64(fileId){
// omit authorization code if any
var file = DriveApp.getFileById(fileId);
var blob = file .getBlob();
return {
file_name: file.getName(),
mime: file.getMimeType(),
b64: Utilities.base64Encode(blob.getBytes());
}
...
Javascript that serve with index.html
...
function getFile(fileId){
google.script.run.withSuccessHandler((data) => {
var uri = 'data:' + data.mime + ';charset=ISO-8859-1;base64,' + encodeURIComponent(data.b64);
downloadURI(uri, data.file_name);
}).withFailureHandler((err) => {
console.log(err);
}).getBlobInBase64();
}
...
NOTE: I haven't run this code but the method should work as used in my other project.
This will log the file names & URLS for any files available for downloading (first 100 in root drive):
function myFunction() {
var files = DriveApp.getFiles();
var c = 0;
while (files.hasNext() && c<100) {
var file = files.next();
Logger.log("File Name: " + file.getName());
Logger.log(" Download URL: " + file.getDownloadUrl());
c++;
}
}
My answer might be a bit off but I think you have a better chance downloading files from Google Drive using the webContentLink as it is the method I commonly use. I obtain webContentLink by using Files.list and ask for webContentLink in the fields parameter. I run that link through the browser and it downloads the file.
If you are trying to download Google Drive files to local computer using Google Apps Script, Then please understand that Google Apps Script is a server side scripting language. It can't download and save files to your local drive.
Here is a webapp that may be helpful for you. It does not do exactly what you are looking for but you may be able to edit it and get a result. Hope it helps!
CODE:
function doGet(e) { // main function
var template = HtmlService.createTemplateFromFile('index.html'); // filename always!
return template.evaluate().setTitle('Search Drive').setSandboxMode(HtmlService.SandboxMode.IFRAME);
}
// Process the form
function processForm(searchTerm) {
var resultToReturn;
Logger.log('processForm was called! ' + searchTerm);
resultToReturn = SearchFiles(searchTerm); // Call to the search files function to search files on google drive
Logger.log('resultToReturn: ' + resultToReturn);
return resultToReturn; // return the results
}
function SearchFiles(searchTerm) {
var searchFor ="title contains '" + searchTerm + "'"; //single quotes are needed around searchterm
var owneris ="and 'YOUREmail#email.com' in Owners"; //email address to search for
var names = [];
Logger.log(searchFor + " " + owneris);
var files = DriveApp.searchFiles(searchFor + " " + owneris);
while (files.hasNext()) {
var file = files.next();
var fileId = file.getId();// To get FileId of the file
var lm = file.getLastUpdated();
var name = file.getName()+"|~|"+fileId+"|~|"+lm; // Im concatenating the filename with file id separated by |~|
names.push(name); // adding to the array
}
return names; // return results
}
INDEX.html
<html>
<head>
<base target="_top">
<script>
function displayMessage() {
var searchTerm;
searchTerm = document.getElementById('idSrchTerm').value;
console.log('searchTerm: ' + searchTerm );
// Below call means: call to processForm passing the searchTerm value (previously escaped) and after finish call the handleResults function
google.script.run.withSuccessHandler(handleResults).processForm(searchTerm.replace("'","\'"));
}
function handleResults(results){
console.log('Handle Results was called! ');
document.writeln('BACK<br/><br/>');
var length=results.length; // total elements of results
for(var i=0;i<length;i++)
{
var item=results[i];
item=item.split("|~|"); // split the line |~|, position 0 has the filename and 1 the file id
document.writeln("<b><a href='https://docs.google.com/document/d/"+item[1]+"' target='_blank'>"+item[0]+"</b></a> (Last modified: "+item[2]+")<br/><br/>"); // write result
}
document.writeln("End of results...");
}
</script>
</head>
<body><center><br/>
Search: <input type="text" id="idSrchTerm" name="search">
<input type="button" value="search files on Google Drive" name="submitButton" onclick="displayMessage()"/>
</center>
</body>
</html>