Add mailing for new moderation suggestions

app/mailers/admin_mailer.rb

@@ -79,6 +79,10 @@ class AdminMailer < ApplicationMailer
     mail subject: default_i18n_subject(instance: @instance)
   end
 
+  def new_moderation_suggestions
+    mail subject: default_i18n_subject(instance: @instance)
+  end
+
   private
 
   def process_params

app/models/user_settings.rb

@@ -55,6 +55,7 @@ class UserSettings
     setting :appeal, default: true
     setting :software_updates, default: 'critical', in: %w(none critical patch all)
     setting :end_of_support, default: true
+    setting :moderation_suggestions, default: true
   end
 
   namespace :interactions do

app/views/admin_mailer/new_moderation_suggestions.text.erb

@@ -0,0 +1,3 @@
+<%= raw t('admin_mailer.new_moderation_suggestions.body') %>
+
+<%= raw t('application_mailer.view')%> <%= admin_moderation_suggestions_url %>

app/views/settings/preferences/notifications/show.html.haml

@@ -23,7 +23,7 @@
     .fields-group
       = ff.input :always_send_emails, wrapper: :with_label, label: I18n.t('simple_form.labels.defaults.setting_always_send_emails'), hint: I18n.t('simple_form.hints.defaults.setting_always_send_emails')
 
-    - if current_user.can?(:manage_reports, :manage_appeals, :manage_users, :manage_taxonomies)
+    - if current_user.can?(:manage_reports, :manage_appeals, :manage_users, :manage_taxonomies, :manage_federation)
       %h2= t 'notifications.moderation_emails'
 
       .fields-group
@@ -31,6 +31,7 @@
         = ff.input :'notification_emails.appeal', as: :boolean, wrapper: :with_label, label: I18n.t('simple_form.labels.notification_emails.appeal') if current_user.can?(:manage_appeals)
         = ff.input :'notification_emails.pending_account', wrapper: :with_label, label: I18n.t('simple_form.labels.notification_emails.pending_account') if current_user.can?(:manage_users)
         = ff.input :'notification_emails.trends', wrapper: :with_label, label: I18n.t('simple_form.labels.notification_emails.trending_tag') if current_user.can?(:manage_taxonomies)
+        = ff.input :'notification_emails.moderation_suggestions', wrapper: :with_label, label: I18n.t('simple_form.labels.notification_emails.moderation_suggestions') if current_user.can?(:manage_federation)
 
     - if SoftwareUpdate.check_enabled? && current_user.can?(:view_devops)
       %h2= t 'notifications.administration_emails'

app/workers/scheduler/moderation_list_synchronization_scheduler.rb

@@ -10,7 +10,7 @@ class Scheduler::ModerationListSynchronizationScheduler
 
     ProcessModerationListsService.new.call
 
-    # TODO: mail suggestions
+    mail_suggestions!
   end
 
   private
@@ -20,4 +20,16 @@ class Scheduler::ModerationListSynchronizationScheduler
       ModerationSubscriptionSyncService.new.call(subscription)
     end.any?
   end
+
+  def mail_suggestions!
+    return unless ModerationSuggestion.exists?(state: :new)
+
+    User.those_who_can(:manage_federation).includes(:account).find_each do |user|
+      next unless user.settings['notification_emails.moderation_suggestions']
+
+      AdminMailer.with(recipient: user.account).new_moderation_suggestions.deliver_later
+    end
+
+    ModerationSuggestion.where(state: :new).in_batches.update_all(state: :mailed)
+  end
 end

config/locales/en.yml

@@ -1425,6 +1425,9 @@ en:
     new_critical_software_updates:
       body: New critical versions of Mastodon have been released, you may want to update as soon as possible!
       subject: Critical Mastodon updates are available for %{instance}!
+    new_moderation_suggestions:
+      body: The moderation lists your server is subscribed to have published new suggestions.
+      subject: New moderation suggestions available on %{instance}!
     new_pending_account:
       body: The details of the new account are below. You can approve or reject this application.
       subject: New account up for review on %{instance} (%{username})

config/locales/simple_form.en.yml

@@ -350,6 +350,7 @@ en:
         follow: Someone followed you
         follow_request: Someone requested to follow you
         mention: Someone mentioned you
+        moderation_suggestions: Automatic moderation suggestions are available
         pending_account: New account needs review
         quote: Someone quoted you
         reblog: Someone boosted your post