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# frozen_string_literal: true
class Pubsubhubbub::ConfirmationWorker
include Sidekiq::Worker
include RoutingHelper
sidekiq_options queue: 'push', retry: false
attr_reader :subscription, :mode, :secret, :lease_seconds
def perform(subscription_id, mode, secret = nil, lease_seconds = nil)
@subscription = Subscription.find(subscription_id)
@mode = mode
@secret = secret
@lease_seconds = lease_seconds
process_confirmation
end
private
def process_confirmation
prepare_subscription
callback_get_with_params
logger.debug "Confirming PuSH subscription for #{subscription.callback_url} with challenge #{challenge}: #{@callback_response_body}"
update_subscription
end
def update_subscription
if successful_subscribe?
subscription.save!
elsif successful_unsubscribe?
subscription.destroy!
end
end
def successful_subscribe?
subscribing? && response_matches_challenge?
end
def successful_unsubscribe?
(unsubscribing? && response_matches_challenge?) || !subscription.confirmed?
end
def response_matches_challenge?
@callback_response_body == challenge
end
def subscribing?
mode == 'subscribe'
end
def unsubscribing?
mode == 'unsubscribe'
end
def callback_get_with_params
Request.new(:get, subscription.callback_url, params: callback_params).perform do |response|
@callback_response_body = response.body.to_s
end
end
def callback_params
{
'hub.topic': account_url(subscription.account, format: :atom),
'hub.mode': mode,
'hub.challenge': challenge,
'hub.lease_seconds': subscription.lease_seconds,
}
end
def prepare_subscription
subscription.secret = secret
subscription.lease_seconds = lease_seconds
subscription.confirmed = true
end
def challenge
@_challenge ||= SecureRandom.hex
end
end
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