Hey there, fellow JavaScript enthusiasts! Ready to dive into the world of DocSend integration? Let's focus on the most crucial part: building a rock-solid auth flow. Buckle up, because we're about to make your integration dreams come true!
DocSend is a powerhouse for secure document sharing, and integrating it into your app can be a game-changer. But here's the thing: without a proper auth flow, you're basically trying to drive a car without keys. Not gonna happen, right? So let's nail this auth flow and set ourselves up for success.
Make sure you've got these in your toolbelt:
First things first, let's get our project ready:
mkdir docsend-integration && cd docsend-integration npm init -y npm install express axios dotenv
Create an .env
file for your secrets:
DOCSEND_CLIENT_ID=your_client_id
DOCSEND_CLIENT_SECRET=your_client_secret
REDIRECT_URI=http://localhost:3000/callback
Now, let's make some magic happen with OAuth 2.0:
const express = require('express'); const axios = require('axios'); require('dotenv').config(); const app = express(); const authorizationUrl = `https://docsend.com/oauth/authorize?client_id=${process.env.DOCSEND_CLIENT_ID}&redirect_uri=${process.env.REDIRECT_URI}&response_type=code`; app.get('/auth', (req, res) => { res.redirect(authorizationUrl); }); app.get('/callback', async (req, res) => { const { code } = req.query; try { const response = await axios.post('https://docsend.com/oauth/token', { client_id: process.env.DOCSEND_CLIENT_ID, client_secret: process.env.DOCSEND_CLIENT_SECRET, code, grant_type: 'authorization_code', redirect_uri: process.env.REDIRECT_URI }); const { access_token, refresh_token } = response.data; // Store these tokens securely! res.send('Authorization successful!'); } catch (error) { console.error('Error during token exchange:', error); res.status(500).send('Authorization failed'); } }); app.listen(3000, () => console.log('Server running on port 3000'));
Remember, access tokens don't last forever. Let's implement a refresh mechanism:
async function refreshToken(refresh_token) { try { const response = await axios.post('https://docsend.com/oauth/token', { client_id: process.env.DOCSEND_CLIENT_ID, client_secret: process.env.DOCSEND_CLIENT_SECRET, refresh_token, grant_type: 'refresh_token' }); return response.data.access_token; } catch (error) { console.error('Error refreshing token:', error); throw error; } }
You'll want to associate DocSend accounts with your app's users. Here's a simple way:
function linkDocSendAccount(userId, accessToken, refreshToken) { // Store in your database db.users.update(userId, { docSendAccessToken: accessToken, docSendRefreshToken: refreshToken }); }
Always be prepared for the unexpected:
app.use((err, req, res, next) => { console.error(err.stack); res.status(500).send('Something broke! But we\'re on it.'); });
Test your auth flow manually by hitting your /auth
endpoint and following the OAuth dance. For the overachievers, why not add some automated tests?
const request = require('supertest'); describe('Auth Flow', () => { it('should redirect to DocSend authorization URL', async () => { const response = await request(app).get('/auth'); expect(response.status).toBe(302); expect(response.header.location).toContain('docsend.com/oauth/authorize'); }); });
Security is not just a feature, it's a must-have. Always use HTTPS in production, implement CSRF protection, and never, ever store client secrets in your codebase. Treat them like your deepest, darkest secrets!
And there you have it! You've just built a solid auth flow for your DocSend integration. Pat yourself on the back – you've laid the foundation for something great. From here, the sky's the limit. Go forth and integrate with confidence!
Remember, the auth flow is just the beginning. Now you can start playing with DocSend's API to do all sorts of cool stuff. But that's a story for another day. Keep coding, and stay awesome!