dirTreeGoogleDrive.js

const fs = require('fs');
const readline = require('readline');
const { google } = require('googleapis');
// codigo de acceso 4/SQBCzOPQn-xHeDBJ3j1LmaSNxP7Hlk62BvrZoPBUk3KgVCqSqvP2ezQ
// If modifying these scopes, delete token.json.
const SCOPES = ['https://www.googleapis.com/auth/drive.metadata.readonly'];
const TOKEN_PATH = 'token.json';

// Load client secrets from a local file.
fs.readFile('credentials.json', (err, content) => {
    if (err) return console.log('Error loading client secret file:', err);
    // Authorize a client with credentials, then call the Google Drive API.
    authorize(JSON.parse(content), listFiles);
});

/**
 * Create an OAuth2 client with the given credentials, and then execute the
 * given callback function.
 * @param {Object} credentials The authorization client credentials.
 * @param {function} callback The callback to call with the authorized client.
 */
function authorize(credentials, callback) {
    const { client_secret, client_id, redirect_uris } = credentials.installed;
    const oAuth2Client = new google.auth.OAuth2(
        client_id, client_secret, redirect_uris[0]);

    // Check if we have previously stored a token.
    fs.readFile(TOKEN_PATH, (err, token) => {
        if (err) return getAccessToken(oAuth2Client, callback);
        oAuth2Client.setCredentials(JSON.parse(token));
        callback(oAuth2Client);
    });
}

/**
 * Get and store new token after prompting for user authorization, and then
 * execute the given callback with the authorized OAuth2 client.
 * @param {google.auth.OAuth2} oAuth2Client The OAuth2 client to get token for.
 * @param {getEventsCallback} callback The callback for the authorized client.
 */
function getAccessToken(oAuth2Client, callback) {
    const authUrl = oAuth2Client.generateAuthUrl({
        access_type: 'offline',
        scope: SCOPES,
    });
    console.log('Authorize this app by visiting this url:', authUrl);
    const rl = readline.createInterface({
        input: process.stdin,
        output: process.stdout,
    });
    rl.question('Enter the code from that page here: ', (code) => {
        rl.close();
        oAuth2Client.getToken(code, (err, token) => {
            if (err) return console.error('Error retrieving access token', err);
            oAuth2Client.setCredentials(token);
            // Store the token to disk for later program executions
            fs.writeFile(TOKEN_PATH, JSON.stringify(token), (err) => {
                if (err) console.error(err);
                console.log('Token stored to', TOKEN_PATH);
            });
            callback(oAuth2Client);
        });
    });
}

/**
 * Lists the names and IDs of up to 10 files.
 * @param {google.auth.OAuth2} auth An authorized OAuth2 client.
 */

const objectInFolder = ( auth, folder,  tipo) => {
    return new Promise((resolve, reject) => {
        const drive = google.drive({ version: 'v3', auth });

        let q = `'${folder}' in parents and mimeType='application/vnd.google-apps.${tipo}' and  trashed = false`
        if (tipo == "file") {
            q = `'${folder}' in parents and mimeType!='application/vnd.google-apps.folder' and  trashed = false`
        }
        // console.log(q)
        // lista solo directorios dentro de un directorio
        drive.files.list({
            q: q,
            pageSize: 100,
        }, async (err, res) => {
            if (err) {
                reject(err);
                return;
            }
            resolve(res)
        });
    })
}
async function listFiles( auth, folder,  nivel) {
    folder = folder || 'root'
    nivel = nivel || 0
    nivel+= 7;
    try 
    {
        const files = (await objectInFolder(auth, folder,  'file')).data.files;
        for (file of files) {
            console.log(' '.repeat(nivel), file.name );
        }
        const folders = (await objectInFolder(auth, folder,  'folder')).data.files
     
        for (folder of folders) {
            let s = `${folder.name}`
            console.log(' '.repeat(nivel), s, '=>' ,files.length );
            await listFiles(auth, folder.id,  nivel);
        }
    } catch (error) {
        console.log(error)
    }
}