Step by Step Guide to Building a KW Command API Integration in Ruby

Introduction

Hey there, fellow Ruby enthusiast! Ready to dive into the world of KW Command API integration? You're in for a treat. This guide will walk you through the process of building a robust integration that'll have you manipulating KW Command data like a pro. Let's get cracking!

Prerequisites

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

• Ruby 2.7+ installed
• Bundler for managing gems
• Your KW Command API credentials (if you don't have these, reach out to the KW team)

Setting up the project

First things first, let's get our project structure in place:

mkdir kw_command_integration
cd kw_command_integration
bundle init

Now, open up that Gemfile and add these bad boys:

gem 'httparty'
gem 'dotenv'

Run bundle install and you're good to go!

Authentication

Authentication with KW Command API is pretty straightforward. Create a .env file in your project root and add your credentials:

KW_CLIENT_ID=your_client_id
KW_CLIENT_SECRET=your_client_secret

Now, let's write a method to grab that access token:

require 'httparty'
require 'dotenv/load'

def get_access_token
  response = HTTParty.post('https://api.kw.com/oauth2/token', 
    body: {
      grant_type: 'client_credentials',
      client_id: ENV['KW_CLIENT_ID'],
      client_secret: ENV['KW_CLIENT_SECRET']
    }
  )
  
  response.parsed_response['access_token']
end

Making API requests

With our token in hand, let's create a base class for our API calls:

class KWCommandAPI
  include HTTParty
  base_uri 'https://api.kw.com/v1'

  def initialize
    @options = { headers: { 'Authorization' => "Bearer #{get_access_token}" } }
  end

  def get(endpoint)
    self.class.get(endpoint, @options)
  end

  # Add post, put, delete methods as needed
end

Implementing key features

Now for the fun part! Let's implement some key features:

class KWCommandAPI
  # ... previous code ...

  def fetch_contacts
    get('/contacts')
  end

  def create_listing(listing_data)
    post('/listings', body: listing_data.to_json)
  end

  def update_task(task_id, task_data)
    put("/tasks/#{task_id}", body: task_data.to_json)
  end
end

Error handling and logging

Don't forget to add some error handling and logging. It'll save you headaches later:

require 'logger'

class KWCommandAPI
  # ... previous code ...

  def initialize
    @logger = Logger.new(STDOUT)
    # ... rest of initialize method ...
  end

  def get(endpoint)
    response = self.class.get(endpoint, @options)
    handle_response(response)
  end

  private

  def handle_response(response)
    case response.code
    when 200..299
      response
    else
      @logger.error("Error: #{response.code} - #{response.message}")
      raise "API Error: #{response.code}"
    end
  end
end

Testing the integration

Don't skimp on testing! Here's a quick example using RSpec:

require 'rspec'
require_relative 'kw_command_api'

RSpec.describe KWCommandAPI do
  let(:api) { KWCommandAPI.new }

  it 'fetches contacts successfully' do
    contacts = api.fetch_contacts
    expect(contacts).to be_a(HTTParty::Response)
    expect(contacts.code).to eq(200)
  end

  # Add more tests for other methods
end

Best practices and optimization

Remember to respect rate limits and implement caching where it makes sense. For example:

class KWCommandAPI
  # ... previous code ...

  def fetch_contacts
    Rails.cache.fetch('kw_contacts', expires_in: 1.hour) do
      get('/contacts')
    end
  end
end

Conclusion

And there you have it! You've just built a solid foundation for your KW Command API integration. Remember, this is just the beginning. Keep exploring the API docs, add more features, and most importantly, have fun with it!

Got questions or want to share your awesome integration? Hit me up in the comments. Happy coding!