Reading and Writing Data Using the Close API

Hey there, fellow JavaScript devs! Ready to dive into the world of Close API integration? Let's get our hands dirty with some data syncing goodness for user-facing integrations. Buckle up!

Setting Up the Close API Client

First things first, let's get that Close API client up and running. It's a breeze, trust me.

const { Client } = require('closeio');
const apiClient = new Client('your_api_key_here');

Easy peasy, right? Just make sure you keep that API key safe and sound.

Reading Data from Close API

Now, let's fetch some juicy data. We'll start with leads because, well, who doesn't love leads?

async function fetchLeads() {
  try {
    const leads = await apiClient.lead.list({ query: 'status:"Potential"' });
    console.log(leads);
  } catch (error) {
    console.error('Oops!', error);
  }
}

Pro tip: Don't forget about pagination. The API's got your back with a handy has_more flag.

Writing Data to Close API

Time to give back to the API. Let's create a shiny new lead:

async function createLead() {
  try {
    const newLead = await apiClient.lead.create({
      name: 'Awesome Company',
      status: 'Potential',
      custom: { favorite_color: 'Blue' }
    });
    console.log('Lead created:', newLead);
  } catch (error) {
    console.error('Uh-oh!', error);
  }
}

See how we snuck in that custom field? Sneaky, but oh so useful.

Implementing Real-Time Data Syncing

Webhooks are your best friend for real-time syncing. Set them up in your Close settings, then let's handle those events:

app.post('/webhook', (req, res) => {
  const event = req.body;
  if (event.type === 'lead.created') {
    // Do something awesome with the new lead
    console.log('New lead alert!', event.data);
  }
  res.sendStatus(200);
});

Optimizing API Usage

Remember, with great power comes great responsibility. Don't go wild with those API calls. Here's a simple caching example to keep things smooth:

const cache = new Map();

async function getCachedLead(id) {
  if (cache.has(id)) {
    return cache.get(id);
  }
  const lead = await apiClient.lead.get(id);
  cache.set(id, lead);
  return lead;
}

Error Handling and Logging

Nobody likes errors, but they happen. Let's handle them like pros:

async function retryableApiCall(fn, maxRetries = 3) {
  for (let i = 0; i < maxRetries; i++) {
    try {
      return await fn();
    } catch (error) {
      if (i === maxRetries - 1) throw error;
      console.warn(`Retry ${i + 1}/${maxRetries}`, error);
      await new Promise(resolve => setTimeout(resolve, 1000 * (i + 1)));
    }
  }
}

Testing and Validation

Last but not least, let's make sure our code is rock solid:

const { expect } = require('chai');
const sinon = require('sinon');

describe('Lead fetching', () => {
  it('should fetch leads successfully', async () => {
    const stub = sinon.stub(apiClient.lead, 'list').resolves([{ id: '1', name: 'Test Lead' }]);
    const leads = await fetchLeads();
    expect(leads).to.have.lengthOf(1);
    expect(leads[0].name).to.equal('Test Lead');
    stub.restore();
  });
});

And there you have it! You're now armed and dangerous with Close API knowledge. Remember, with great API powers come great opportunities to build awesome integrations. Now go forth and sync that data like a boss!

Happy coding, and may your API calls always return 200 OK! 🚀