Reading and Writing Data Using the Adobe Sign API

Hey there, fellow JavaScript devs! Ready to dive into the world of Adobe Sign API? Let's get our hands dirty with some code and learn how to sync data for a user-facing integration. Buckle up!

Authentication: Your Key to the Kingdom

First things first, we need to get past the bouncer. Adobe Sign uses OAuth 2.0, so let's set that up:

const getAccessToken = async () => {
  const response = await fetch('https://api.adobe.io/oauth/token', {
    method: 'POST',
    headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
    body: 'grant_type=client_credentials&client_id=YOUR_CLIENT_ID&client_secret=YOUR_CLIENT_SECRET'
  });
  const data = await response.json();
  return data.access_token;
};

Pro tip: Don't forget to refresh that token before it expires!

Reading Data: What's in the Vault?

Now that we're in, let's grab some data. Here's how you can fetch agreements:

const getAgreements = async (accessToken) => {
  const response = await fetch('https://api.adobe.io/api/rest/v6/agreements', {
    headers: { Authorization: `Bearer ${accessToken}` }
  });
  return response.json();
};

Easy peasy, right? You can use a similar approach for user info or documents.

Writing Data: Leave Your Mark

Time to create some agreements:

const createAgreement = async (accessToken, agreementData) => {
  try {
    const response = await fetch('https://api.adobe.io/api/rest/v6/agreements', {
      method: 'POST',
      headers: {
        Authorization: `Bearer ${accessToken}`,
        'Content-Type': 'application/json'
      },
      body: JSON.stringify(agreementData)
    });
    if (!response.ok) throw new Error('Failed to create agreement');
    return response.json();
  } catch (error) {
    console.error('Error creating agreement:', error);
  }
};

Syncing Data: Stay in the Loop

Webhooks are your best friend for real-time updates. Here's a quick setup:

const express = require('express');
const app = express();

app.post('/webhook', express.json(), (req, res) => {
  const event = req.body;
  // Handle the event
  console.log('Received event:', event);
  res.sendStatus(200);
});

app.listen(3000, () => console.log('Webhook server running on port 3000'));

Remember to play nice with rate limits and pagination!

Error Handling and Logging: Don't Let Bugs Bite

Always expect the unexpected:

const apiCall = async (url, options) => {
  try {
    const response = await fetch(url, options);
    if (!response.ok) {
      throw new Error(`API call failed: ${response.status}`);
    }
    return response.json();
  } catch (error) {
    console.error('API Error:', error);
    // Log to your preferred logging service
    throw error;
  }
};

Performance Optimization: Speed Demon

Cache when you can, and batch when you must:

const cachedData = new Map();

const getCachedData = async (key, fetchFunction) => {
  if (cachedData.has(key)) {
    return cachedData.get(key);
  }
  const data = await fetchFunction();
  cachedData.set(key, data);
  return data;
};

Security Considerations: Lock It Down

Never expose sensitive data:

const secureStorage = {
  set: (key, value) => {
    // Use a secure storage method
    console.log(`Securely storing ${key}`);
  },
  get: (key) => {
    // Retrieve from secure storage
    console.log(`Securely retrieving ${key}`);
  }
};

Testing and Debugging: Trust, but Verify

Always test your API calls:

const mockFetch = jest.fn();
global.fetch = mockFetch;

test('getAgreements fetches agreements', async () => {
  mockFetch.mockResolvedValueOnce({
    ok: true,
    json: async () => ({ agreements: [] })
  });

  const agreements = await getAgreements('fake_token');
  expect(agreements).toEqual({ agreements: [] });
  expect(mockFetch).toHaveBeenCalledWith(
    'https://api.adobe.io/api/rest/v6/agreements',
    expect.any(Object)
  );
});

Wrapping Up

And there you have it! You're now equipped to read and write data like a pro using the Adobe Sign API. Remember to keep your code clean, your tokens fresh, and your error handling sharp. Happy coding, and may your integrations be ever smooth!