How to pass arguments to initialize method from a class? - ruby-on-rails

Question

I am using Push8 gem for Apple push notification which accepts .P8 certificates.The problem is that I have two bundle_id for two separate apps and need to send Push Notifications to both of them. The Push8 gem accepts bundle_id ENV['APN_BUNDLE_ID'] params automatically from the application.yml file. However, I want it to use ENV['APN_VENDOR_BUNDLE_ID'] as well for a different APP to send Push Notification.
my code to send Push notification is here
def self.send_notification_ios(device_id, notification_id)
send = Notification.where(id: notification_id).first
if Rails.env == 'development'
apn = P8push::Client.development
else
apn = P8push::Client.production
end
token = device_id
notification = P8push::Notification.new(device: token)
notification.alert = send.template.message % { txnid: send.order.txnid }
notification.sound = 'sosumi.aiff'
apn.push(notification)
end
Here If the send.end_user_type is "User" I want to use the Bundle id APN_BUNDLE_ID as the topic, for rest as want to use APN_VENDOR_BUNDLE_ID. But I dont know how to pass APN_VENDOR_BUNDLE_ID as a param to initialize method in the client.rb file of the gem. Hence it always accepts APN_BUNDLE_ID as the topic and hence throws the error topic disallowed.
Here is the client.rb file for the gem:
https://github.com/andrewarrow/p8push/blob/master/lib/p8push/client.rb
The link for the gem is https://github.com/andrewarrow/p8push

Answer 1

If the initialize method makes no accommodations for customizing that attribute you've got two choices: Monkey-patch it to make it do what you want, which is messy, or subclass it and use that instead.
The sub-class solution looks like this:
class UserAwareClient < P8Push::Client
def self.development(user_type)
client = self.new(user_type)
client.jwt_uri = APPLE_DEVELOPMENT_JWT_URI
client
end
def self.production(user_type)
client = self.new(user_type)
client.jwt_uri = APPLE_PRODUCTION_JWT_URI
client
end
def initialize(user_type)
# Initialize as the parent class would
super
# Then detect the user_type argument and decide how to configure it
#private_key =
case (user_type)
when 'User'
File.read(ENV['APN_PRIVATE_KEY'])
else
File.read(ENV['APN_VENDOR_BUNDLE_ID'])
end
end
end
end
Then you create that:
apn = UserAwareClient.development(user_type)
This gem could be made a lot more flexible with a few pull-requests to make your life easier, so consider that, too.