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module Noticed
class DeliveryMethod < Noticed.parent_class.constantize
include ApiClient
include RequiredOptions
extend ActiveModel::Callbacks
define_model_callbacks :deliver
class_attribute :logger, default: Rails.logger
attr_reader :config, :event, :notification
delegate :recipient, to: :notification
delegate :record, :params, to: :event
def perform(delivery_method_name, notification, recipient: nil, params: {}, overrides: {})
# Ephemeral notifications
if notification.is_a? String
@notification = notification.constantize.new_with_params(recipient, params)
@event = @notification.event
else
@notification = notification
@event = notification.event
end
# Look up config from Notifier and merge overrides
@config = event.delivery_methods.fetch(delivery_method_name).config.merge(overrides)
return false if config.has_key?(:if) && !evaluate_option(:if)
return false if config.has_key?(:unless) && evaluate_option(:unless)
run_callbacks :deliver do
deliver
end
end
def deliver
raise NotImplementedError, "Delivery methods must implement the `deliver` method"
end
def fetch_constant(name)
option = evaluate_option(name)
option.is_a?(String) ? option.constantize : option
end
def evaluate_option(name)
option = config[name]
# Evaluate Proc within the context of the Notification
if option&.respond_to?(:call)
notification.instance_exec(&option)
# Call method if symbol and matching method on Notifier
elsif option.is_a?(Symbol) && event.respond_to?(option, true)
event.send(option, notification)
# Return the value
else
option
end
end
end
end
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