Step by Step Guide to Building a Runkeeper API Integration in Ruby

Introduction

Hey there, fellow code wranglers! Ready to get your hands dirty with the Runkeeper API? We're about to embark on a journey to integrate this fitness powerhouse into your Ruby project. Buckle up, because by the end of this guide, you'll be pulling and pushing fitness data like a pro.

Prerequisites

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

• Ruby 2.7+ (because who doesn't love the latest and greatest?)
• The httparty and oauth2 gems (your new best friends)
• Runkeeper API credentials (grab 'em from the Runkeeper developer portal)

Setting up the project

Let's kick things off:

mkdir runkeeper_integration
cd runkeeper_integration
bundle init

Now, crack open that Gemfile and add:

gem 'httparty'
gem 'oauth2'

Run bundle install, and we're off to the races!

Authentication

Runkeeper uses OAuth 2.0, so let's get that sorted:

require 'oauth2'

client = OAuth2::Client.new(
  'YOUR_CLIENT_ID',
  'YOUR_CLIENT_SECRET',
  site: 'https://runkeeper.com',
  authorize_url: '/apps/authorize',
  token_url: '/apps/token'
)

# Generate the authorization URL
auth_url = client.auth_code.authorize_url(redirect_uri: 'YOUR_REDIRECT_URI')

# After user authorizes, you'll get a code. Use it to get the access token:
token = client.auth_code.get_token('AUTHORIZATION_CODE', redirect_uri: 'YOUR_REDIRECT_URI')

Making API requests

Now that we're authenticated, let's make some requests:

require 'httparty'

class RunkeeperAPI
  include HTTParty
  base_uri 'https://api.runkeeper.com'

  def initialize(access_token)
    @headers = { 'Authorization' => "Bearer #{access_token}" }
  end

  def get_user_info
    self.class.get('/user', headers: @headers)
  end

  # Add more methods for other endpoints
end

api = RunkeeperAPI.new(token.token)
user_info = api.get_user_info

Core functionality

Let's add some meat to our API wrapper:

class RunkeeperAPI
  # ... previous code ...

  def get_activities(page = 0, limit = 20)
    self.class.get("/fitnessActivities?page=#{page}&limit=#{limit}", headers: @headers)
  end

  def post_activity(activity_data)
    self.class.post('/fitnessActivities', headers: @headers, body: activity_data.to_json)
  end
end

Data processing and storage

Parsing the JSON is a breeze with Ruby:

activities = api.get_activities
activities['items'].each do |activity|
  # Do something with each activity
  puts "Activity type: #{activity['type']}, Duration: #{activity['duration']}"
end

Advanced features

Want to get fancy? Let's set up a webhook:

post '/webhook' do
  # Verify the signature
  # Process the incoming data
  # Respond with a 200 OK
end

Testing

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

RSpec.describe RunkeeperAPI do
  it 'fetches user info' do
    api = RunkeeperAPI.new('fake_token')
    allow(RunkeeperAPI).to receive(:get).and_return({ 'name' => 'John Doe' })
    expect(api.get_user_info['name']).to eq('John Doe')
  end
end

Deployment considerations

When deploying, remember:

• Keep those API keys secret! Use environment variables.
• Implement token refresh to keep the integration running smoothly.

Conclusion

And there you have it! You've just built a solid Runkeeper API integration in Ruby. You're now equipped to create some seriously cool fitness apps. Remember, the Runkeeper API docs are your friend for diving deeper.

Now go forth and code something awesome! 💪🏼🏃‍♀️🚀