Step by Step Guide to Building a Holded API Integration in JS

Introduction

Hey there, fellow developer! Ready to dive into the world of Holded API integration? You're in for a treat. We'll be using the nifty holded-client package to make our lives easier. Let's get cracking!

Prerequisites

Before we jump in, make sure you've got:

• Node.js and npm installed (I know you probably do, but just checking!)
• A Holded account with API credentials (if you don't have these, go grab 'em real quick)

Setting up the project

Alright, let's get our project off the ground:

mkdir holded-integration && cd holded-integration
npm init -y
npm install holded-client

Easy peasy, right?

Authentication

Now, let's get that Holded client up and running:

const { HoldedClient } = require('holded-client');

const client = new HoldedClient({
  apiKey: 'YOUR_API_KEY_HERE',
});

Pro tip: Don't hardcode that API key! Use environment variables to keep things secure.

Basic API operations

Time to flex those API muscles:

// Fetch contacts
const contacts = await client.contacts.list();

// Create a new invoice
const newInvoice = await client.invoices.create({
  contactId: 'CONTACT_ID',
  items: [{ name: 'Awesome Service', units: 1, price: 100 }],
});

// Update a contact
await client.contacts.update('CONTACT_ID', { name: 'Updated Name' });

// Delete an invoice
await client.invoices.delete('INVOICE_ID');

Error handling and best practices

Don't let those pesky errors catch you off guard:

try {
  const result = await client.someMethod();
  // Do something with the result
} catch (error) {
  console.error('Oops!', error.message);
}

And remember, play nice with rate limits. Your API won't ghost you if you treat it right!

Advanced usage

Want to level up? Check this out:

// Pagination
const allContacts = await client.contacts.list({ page: 1, limit: 50 });

// Filtering and sorting
const filteredInvoices = await client.invoices.list({
  from: '2023-01-01',
  to: '2023-12-31',
  sort: 'date',
  order: 'desc',
});

Testing the integration

Don't forget to test! Here's a quick Jest example:

test('fetches contacts successfully', async () => {
  const contacts = await client.contacts.list();
  expect(contacts).toBeDefined();
  expect(Array.isArray(contacts)).toBe(true);
});

Deployment considerations

When you're ready to ship:

• Use environment variables for sensitive info
• Implement proper error logging
• Consider using a rate limiting library to respect API limits

Conclusion

And there you have it! You're now armed and dangerous with Holded API integration skills. Remember, the Holded API docs are your best friend for diving deeper.

Now go forth and integrate like a boss! 🚀