discourse/app/models/user_email_observer.rb

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class UserEmailObserver < ActiveRecord::Observer
observe :notification
class EmailUser
attr_reader :notification
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def initialize(notification)
@notification = notification
end
def mentioned
enqueue :user_mentioned
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end
def posted
enqueue :user_posted
end
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def quoted
enqueue :user_quoted
end
def replied
enqueue :user_replied
end
def private_message
enqueue_private :user_private_message
end
def invited_to_private_message
enqueue :user_invited_to_private_message
end
def invited_to_topic
enqueue :user_invited_to_topic
end
private
def enqueue(type)
return unless notification.user.email_direct?
Jobs.enqueue_in(delay,
:user_email,
type: type,
user_id: notification.user_id,
notification_id: notification.id)
end
def enqueue_private(type)
return unless notification.user.email_private_messages?
Jobs.enqueue_in(delay,
:user_email,
type: type,
user_id: notification.user_id,
notification_id: notification.id)
end
def delay
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SiteSetting.email_time_window_mins.minutes
end
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end
def after_commit(notification)
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transaction_includes_action = notification.send(:transaction_include_any_action?, [:create])
delegate_to_email_user notification if transaction_includes_action
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end
private
def extract_notification_type(notification)
Notification.types[notification.notification_type]
end
def delegate_to_email_user(notification)
email_user = EmailUser.new(notification)
email_method = extract_notification_type notification
email_user.send(email_method) if email_user.respond_to? email_method
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end
end