require_dependency 'email/sender' module Jobs # Asynchronously send an email to a user class UserEmail < Jobs::Base def execute(args) raise Discourse::InvalidParameters.new(:user_id) unless args[:user_id].present? raise Discourse::InvalidParameters.new(:type) unless args[:type].present? post = nil notification = nil type = args[:type] user = User.find_by(id: args[:user_id]) to_address = args[:to_address].presence || user.try(:email).presence || "no_email_found" set_skip_context(type, args[:user_id], to_address, args[:post_id]) return skip(I18n.t("email_log.no_user", user_id: args[:user_id])) unless user if args[:post_id].present? post = Post.find_by(id: args[:post_id]) return skip(I18n.t('email_log.post_not_found', post_id: args[:post_id])) unless post.present? end if args[:notification_id].present? notification = Notification.find_by(id: args[:notification_id]) end message, skip_reason = message_for_email(user, post, type, notification, args[:notification_type], args[:notification_data_hash], args[:email_token], args[:to_address]) if message Email::Sender.new(message, type, user).send else skip_reason end end def set_skip_context(type, user_id, to_address, post_id) @skip_context = { type: type, user_id: user_id, to_address: to_address, post_id: post_id } end NOTIFICATIONS_SENT_BY_MAILING_LIST ||= Set.new %w{ posted replied mentioned group_mentioned quoted } CRITICAL_EMAIL_TYPES = Set.new %i{ account_created admin_login confirm_new_email confirm_old_email forgot_password notify_old_email signup signup_after_approval } def message_for_email(user, post, type, notification, notification_type=nil, notification_data_hash=nil, email_token=nil, to_address=nil) set_skip_context(type, user.id, to_address || user.email, post.try(:id)) return skip_message(I18n.t("email_log.anonymous_user")) if user.anonymous? return skip_message(I18n.t("email_log.suspended_not_pm")) if user.suspended? && type != :user_private_message return if user.staged && type == :digest seen_recently = (user.last_seen_at.present? && user.last_seen_at > SiteSetting.email_time_window_mins.minutes.ago) seen_recently = false if user.user_option.email_always || user.staged email_args = {} if post || notification || notification_type return skip_message(I18n.t('email_log.seen_recently')) if seen_recently && !user.suspended? end if post email_args[:post] = post end if notification || notification_type email_args[:notification_type] ||= notification_type || notification.try(:notification_type) email_args[:notification_data_hash] ||= notification_data_hash || notification.try(:data_hash) unless String === email_args[:notification_type] if Numeric === email_args[:notification_type] email_args[:notification_type] = Notification.types[email_args[:notification_type]] end email_args[:notification_type] = email_args[:notification_type].to_s end if user.user_option.mailing_list_mode? && (!post.try(:topic).try(:private_message?)) && NOTIFICATIONS_SENT_BY_MAILING_LIST.include?(email_args[:notification_type]) # no need to log a reason when the mail was already sent via the mailing list job return [nil, nil] end unless user.user_option.email_always? if (notification && notification.read?) || (post && post.seen?(user)) return skip_message(I18n.t('email_log.notification_already_read')) end end end skip_reason = skip_email_for_post(post, user) return skip_message(skip_reason) if skip_reason # Make sure that mailer exists raise Discourse::InvalidParameters.new("type=#{type}") unless UserNotifications.respond_to?(type) if email_token.present? email_args[:email_token] = email_token end if type == :notify_old_email email_args[:new_email] = user.email end if EmailLog.reached_max_emails?(user) return skip_message(I18n.t('email_log.exceeded_emails_limit')) end if !CRITICAL_EMAIL_TYPES.include?(type) && user.user_stat.bounce_score >= SiteSetting.bounce_score_threshold return skip_message(I18n.t('email_log.exceeded_bounces_limit')) end message = EmailLog.unique_email_per_post(post, user) do UserNotifications.send(type, user, email_args) end # Update the to address if we have a custom one if message && to_address.present? message.to = to_address end [message, nil] end sidekiq_retry_in do |count, exception| # retry in an hour when SMTP server is busy # or use default sidekiq retry formula case exception.wrapped when Net::SMTPServerBusy 1.hour + (rand(30) * (count + 1)) else Jobs::UserEmail.seconds_to_delay(count) end end # extracted from sidekiq def self.seconds_to_delay(count) (count ** 4) + 15 + (rand(30) * (count + 1)) end private def skip_message(reason) [nil, skip(reason)] end # If this email has a related post, don't send an email if it's been deleted or seen recently. def skip_email_for_post(post, user) if post return I18n.t('email_log.topic_nil') if post.topic.blank? return I18n.t('email_log.post_user_deleted') if post.user.blank? return I18n.t('email_log.post_deleted') if post.user_deleted? return I18n.t('email_log.user_suspended') if (user.suspended? && !post.user.try(:staff?)) return I18n.t('email_log.already_read') if PostTiming.where(topic_id: post.topic_id, post_number: post.post_number, user_id: user.id).present? else false end end def skip(reason) EmailLog.create!( email_type: @skip_context[:type], to_address: @skip_context[:to_address], user_id: @skip_context[:user_id], post_id: @skip_context[:post_id], skipped: true, skipped_reason: "[UserEmail] #{reason}", ) end end end