NodeJS Script to upload file to Google Drive using GoogleAPI’s

Hi Guy’s Welcome to Proto Coders Point. This article is on how to upload files to Google Drive using NodeJS.

Uploading a file to google drive by using nodejs code take several steps, which include steps:

• Creating Project in Google Cloud Console.
• Enabling Google Drive API.
• Creating Service Account Credentials.
• Creating NodeJS Project and Install Necessary Libraries.
• NodeJS Code to Upload File to Google Drive.

Step 1: Setup a Google Cloud Console Project:

• Go to Google Cloud Console : https://console.cloud.google.com/.
• Create a new Project or select an existing one.
• Now Navigate to “API’s & Services” > “Library”.
• In Search for “Google Drive API” and click on enable button for your project.

Step 2: Create Service Account Credentials API

In google cloud console, Navigate to “API’s & Services” > “Credentials”.

Click on “Create Credentials” > Select “Service Account”.

Enter Service Account Name, Service account ID then click DONE.

Step 3: Creating API Key JSON File for authentication

Once Service Account is been created, click on Service Account Email as soon in above image.

Then Click on Keys > Add Key > Create New Key

This will create a json file download it, It contain api key by making use of which you can write a nodeJS Script that can upload files into your google drive.

Step 4: Creating a Folder & Give Access

Now, Once Service Account email is created, We need to create a Folder on Google Drive that will have full access permission for the service account we created, Basically share that folder with Service Account we created in above step.

Click on 3 dot on the folder that you want to share with service account, then click on share and enter the email address of service account and done.

Step 5: Creating NodeJS Project

Create a folder & open a terminal in that folder path itself.

In Terminal/CMD enter npm init to make normal folder into nodeJS project

Step 6: Installing required Library/Module

To upload files into google drive from Nodejs script we need few library:

fs (File Sytem) -> To work with Files of System.

googleapis -> To communicate with google drive API.

Install those using below cmd:

npm install fs googleapis

Step 7: Finally NodeJS Script/Function to Upload file to Google Drive using Google Drive API

In your NodeJS Project, paste the credential .json file download from above step.

In my project I have created a javascript code by name app.js, what will have a function that will upload file to google drive.

app.js

const fs = require('fs');
const { google }= require('googleapis');

const apikeys = require('./apikeys.json');
const SCOPE = ['https://www.googleapis.com/auth/drive'];

// A Function that can provide access to google drive api
async function authorize(){
    const jwtClient = new google.auth.JWT(
        apikeys.client_email,
        null,
        apikeys.private_key,
        SCOPE
    );

    await jwtClient.authorize();

    return jwtClient;
}

// A Function that will upload the desired file to google drive folder
async function uploadFile(authClient){
    return new Promise((resolve,rejected)=>{
        const drive = google.drive({version:'v3',auth:authClient}); 

        var fileMetaData = {
            name:'mydrivetext.txt',    
            parents:['1bZoTbqCew34MGr1DfgczcA40ECM_QhKg'] // A folder ID to which file will get uploaded
        }

        drive.files.create({
            resource:fileMetaData,
            media:{
                body: fs.createReadStream('mydrivetext.txt'), // files that will get uploaded
                mimeType:'text/plain'
            },
            fields:'id'
        },function(error,file){
            if(error){
                return rejected(error)
            }
            resolve(file);
        })
    });
}

authorize().then(uploadFile).catch("error",console.error()); // function call

Now run the code

node app.js