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create_subscription_service.rb
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create_subscription_service.rb
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class CreateSubscriptionService
include Callable
attr_reader :subscriber_list, :subscriber, :frequency, :current_user
def initialize(subscriber_list, subscriber, frequency, current_user)
@subscriber_list = subscriber_list
@subscriber = subscriber
@frequency = frequency
@current_user = current_user
end
def call
ApplicationRecord.transaction do
subscriber.lock!
subscription = Subscription.active.find_by(
subscriber_list: subscriber_list,
subscriber: subscriber,
)
if subscription
return subscription if subscription.frequency == frequency
subscription.end(reason: :frequency_changed)
end
Subscription.create!(
subscriber: subscriber,
subscriber_list: subscriber_list,
frequency: frequency,
signon_user_uid: current_user.uid,
source: subscription ? :frequency_changed : :user_signed_up,
)
rescue ArgumentError
# This happens if a frequency is provided that isn't included
# in the enum which is in the Subscription model
raise ActiveRecord::RecordInvalid
end
end
end