Google Drive API with googleapis Nodejs

README.md

Install googleapis

npm i googleapis

index.js

const { google } = require('googleapis');
const drive = google.drive("v3");

const config = require('./sa.json');

async function auth() {
    var jwtClient = new google.auth.JWT(
        config['client_email'],
        undefined,
        config['private_key'],
        ['https://www.googleapis.com/auth/drive']
    );

    return new Promise((resolve, reject) => {
        jwtClient.authorize(err => {
            if (err) {
                reject(err);
            }
            resolve(jwtClient);
        });
    });
}

async function getStorageQuota(client) {
    return new Promise((resolve, reject) => {
        // https://developers.google.com/drive/api/reference/rest/v3/about
        drive.about.get({
            auth: client,
            fields: "*"
        }, (err, res) => {
            if (err) {
                return reject(err);
            }

            // convert to Gb
            const limit = (res.data.storageQuota.limit / 1_000_000_000).toFixed(2);
            const usage = (res.data.storageQuota.usage / 1_000_000_000).toFixed(2);
            return resolve({
                limit: `${limit} Gb`,
                usage: `${usage} Gb`
            })
        });
    });
}

async function getFiles(client, nextPageToken = '', q = null, pageSize = 10) {
    return new Promise((resolve, reject) => {
        let params = {
            pageSize: pageSize
        };

        // https://developers.google.com/drive/api/guides/search-files#node.js
        if (q != null) {
            params.q = `${q.key} contains '${q.value}'`
        }

        if (nextPageToken != "") {
            params.pageToken = nextPageToken
        }

        // https://developers.google.com/drive/api/reference/rest/v3/files/list
        drive.files.list(params, {
            auth: client,
            fields: "files(id, name, mimeType, thumbnailLink)",
            
        }, (err, res) => {
            if (err) {
                return reject(err);
            }
            return resolve({nextPageToken: res.data.nextPageToken, files: res.data.files});
        });
    });
}

async function deleteFile(client, fileId) {

    if (!fileId){
        return 'file id is not defined.';
    }

    return new Promise((resolve, reject) => {
        drive.files.delete({
            fileId: fileId,
            auth: client,
        }, (err, res) => {
            if (err) {
                return reject(err);
            }
            return resolve(res.data);
        });
    });
}

async function  main() {
    try {
        const client = await auth();
        const storageQuota = await getStorageQuota(client);
        console.log('storage quota: ', storageQuota);

        // delete file
        // const deleteResult = await deleteFile(client, '1eegeeMNdage-xxxxxxxxxxxxxxxxxxxxxxxx');
        // console.log(deleteResult);

        const {nextPageToken, files} = await getFiles(client, '', {key:'name', value:'myfile-1734489450847'}, 5);
        console.log('next page token: ', nextPageToken);

        for(let i = 0; i < files.length; i++) {
            const file = files[i];
            console.log(file)
        }
    } catch(e) {
        console.log(e);
    }
} 

main().catch(e => console.log(e));

sa.json

{
    "type": "service_account",
    "project_id": "my-project",
    "private_key_id": "xxxxxxxxxxxxxxxxxxxxxxxxxxxx",
    "private_key": "-----BEGIN PRIVATE KEY-----\nxxxxxxxxxxxxx\n-----END PRIVATE KEY-----\n",
    "client_email": "[email protected]",
    "client_id": "111111111111111111",
    "auth_uri": "https://accounts.google.com/o/oauth2/auth",
    "token_uri": "https://oauth2.googleapis.com/token",
    "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
    "client_x509_cert_url": "https://www.googleapis.com/robot/v1/metadata/x509/gdrive-xxxx%40my-project.iam.gserviceaccount.com",
    "universe_domain": "googleapis.com"
  }