Download images from Google Drive folder using Node.js Google library

download-images-from-google-drive.js

var google = require("googleapis"),
    drive = google.drive("v2"),
    fs = require("fs");

var config = {
  "client_id": "client_id",
  "client_secret": "client_secret",
  "scope": "scope",
  "redirect_url": "redirect_rul",
  "tokens": {
    "access_token": "access_token",
    "token_type": "Bearer",
    "id_token": "id_token",
    "refresh_token": "refresh_token",
    "expiry_date": "expiry_date"
  }
};

function buildClient() {
  var client = new google.auth.OAuth2(
    config.client_id,
    config.client_secret,
    config.redirect_url
  );
  client.setCredentials(config.tokens);
  return client;
}

var client = buildClient(),
    folderId = "folderId"; // The Google Drive Folder Id

// Request all image files from folder
drive.children.list({
  auth: client,
  folderId: folderId,
  q: "mimeType contains 'image' and trashed = false"
}, function(error, response) {
  if (error) { return console.log("ERROR", error); }

  response.items.forEach(function(item) {
    var file = fs.createWriteStream("./" + item.title);
    file.on("finish", function() {
      console.log("downloaded", item.title);
    });

    // Download file
    drive.files.get({
      auth: client,
      fileId: item.id,
      alt: "media"
    }).pipe(file);
  });
});

This code didn't work for me. I got an error that drive.files.get.pipe is not a function Instead this worked for me

drive.files.get(
  {fileId: fileId, alt: ‘media’}, {responseType: ‘stream’},
  (err, res) => {
     res.data
     .on(‘end’, () => {
        console.log(‘Done’);
     })
     .on(‘error’, err => {
        console.log(‘Error’, err);
     })
     .pipe(dest);
}

This code didn't work for me. I got an error that drive.files.get.pipe is not a function Instead this worked for me

drive.files.get(
  {fileId: fileId, alt: ‘media’}, {responseType: ‘stream’},
  (err, res) => {
     res.data
     .on(‘end’, () => {
        console.log(‘Done’);
     })
     .on(‘error’, err => {
        console.log(‘Error’, err);
     })
     .pipe(dest);
}

@rotimi-best
While using same code, I get error as
(node:17335) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'data' of undefined. Can you help?

This code didn't work for me. I got an error that drive.files.get.pipe is not a function Instead this worked for me

drive.files.get(
  {fileId: fileId, alt: ‘media’}, {responseType: ‘stream’},
  (err, res) => {
     res.data
     .on(‘end’, () => {
        console.log(‘Done’);
     })
     .on(‘error’, err => {
        console.log(‘Error’, err);
     })
     .pipe(dest);
}

@rotimi-best
While using same code, I get error as
(node:17335) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'data' of undefined. Can you help?

@erIamshivani Can you please show me the result of console.log(res)?

You should add:
if (err) { return console.log("ERROR", err); }
i think thats why res is undefined.

drive.files.get(
  {fileId: fileId, alt: 'media'}, {responseType: 'stream'},
  (err, res) => {
     if (err) { return console.log("ERROR", err); 
     res.data
     .on('end', () => {
        console.log(‘Done’);
     })
     .on('error', err => {
        console.log(‘Error’, err);
     })
     .pipe(dest);
}

Thank you for responding.
But this answer helped me before I checked your response.

@davestevens that is very correct.

@erIamshivani So what did you do differently?

This one works as well

drive.files.get({fileId: randomFile.id, alt: 'media'}, {responseType: 'stream'}) .then((res) => res.data.pipe(dest)) .catch(err => console.log(err));

final code for me

 const fileWrite = fs.createWriteStream('./' + 'a.png');
  fileWrite.on('finish', function () {
    console.log('downloaded', 'a.png');
  });

  const file = await service.files.get(
    {
      auth,
      fileId,
      alt: 'media',
    },
    { responseType: 'stream' }
  );

  if (file) {
    file.data
      .on('end', () => {
        console.log('Done');
      })
      .on('error', (err) => {
        console.log('Error', err);
      })
      .pipe(fileWrite);
  }

or

const fileWrite = fs.createWriteStream('./' + 'a.png');
  fileWrite.on('finish', function () {
    console.log('downloaded', 'a.png');
  });

  const drive = google.drive('v3');

  drive.files.get(
    { fileId, auth, alt: 'media' },
    { responseType: 'stream' },
    (err, res) => {
      if (err) {
        throw err;
      }

      if (res) {
        res.data
          .on('end', () => {
            console.log('Done');
          })
          .on('error', (err) => {
            console.log('Error', err);
          })
          .pipe(fileWrite);
      }
    }
  );

@davestevens thank you!