Easily customisable Rake task to send APNS push notifications

Rakefile

require "rake"
require "houston"

namespace :push do

  # Enables console logging
  STDOUT.sync = true

  # Instructions
  # $> sudo gem install rake
  # $> sudo gem install houston
  # $> rake push:send[development,'This is a test',03a31ada5eae18cc5a71715abbf7abe5c5d943af48e264cb042e506c4adbfcca]

  desc "Sends a push notification to the specified enviroment"
  task :send, [:enviroment, :alert, :token] do |t, args|
    raise "Missing environment, alert or device token" if args.alert.nil? || args.token.nil? || args.environment.nil?

    # Create APN client
    apn = Houston::Client.development
    apn = Houston::Client.production if args.environment == "production"
    apn.certificate = File.read(ENV["APN_CERTIFICATE_PATH"])

    # Create notification
    notification = create_push(
      args.token,
      args.alert,
      custom_payload
    )

    # Log
    puts "\nSending push notification:\n\n\t- Alert: \"#{args.alert}\"\n\t- Token: #{args.token}\n"

    # Send push
    apn.push(notification)
  end

  # Aux methods

  def create_push(token, title, body)
    notification = Houston::Notification.new(device: token)
    notification.alert = title
    notification.custom_data = body
    notification.content_available = true
    return notification
  end

  def custom_payload()
    payload =  {
      custom: {
        url: "deeplink://something?something=something"
      }
    }
    return payload
  end

end