AO3-5610 notify users when a bookmark or series they have created is hidden

app/mailers/user_mailer.rb

@@ -362,6 +362,30 @@ def admin_deleted_work_notification(user, work)
     end
   end
 
+  def admin_hidden_bookmark_notification(creation_id, user_id)
+    @user = User.find_by(id: user_id)
+    @bookmark = Bookmark.find_by(id: creation_id)
+
+    I18n.with_locale(@user.preference.locale.iso) do
+      mail(
+        to: @user.email,
+        subject: default_i18n_subject(app_name: ArchiveConfig.APP_SHORT_NAME)
+      )
+    end
+  end
+
+  def admin_hidden_series_notification(creation_id, user_id)
+    @user = User.find_by(id: user_id)
+    @series = Series.find_by(id: creation_id)
+
+    I18n.with_locale(@user.preference.locale.iso) do
+      mail(
+        to: @user.email,
+        subject: default_i18n_subject(app_name: ArchiveConfig.APP_SHORT_NAME)
+      )
+    end
+  end
+
   # Sends email to creators when a creation is hidden by an admin
   def admin_hidden_work_notification(creation_id, user_id)
     @user = User.find_by(id: user_id)

app/models/bookmark.rb

@@ -125,6 +125,8 @@ def check_new_external_work
   # Use the current user to determine what works are visible
   scope :visible, -> { visible_to_user(User.current_user) }
 
+  after_update :admin_hidden_bookmark_notification, if: :hidden_by_admin_changed?
+
   before_destroy :invalidate_bookmark_count
   after_save :invalidate_bookmark_count, :update_pseud_index
 
@@ -213,4 +215,14 @@ def bookmarkable_date
       bookmarkable.updated_at
     end
   end
+
+  private
+
+  def admin_hidden_bookmark_notification
+    return unless hidden_by_admin?
+
+    users.each do |user|
+      UserMailer.send_bookmark_hidden_notification(id, user.id).deliver_later
+    end
+  end
 end

app/models/series.rb

@@ -37,6 +37,7 @@ def title
     maximum: ArchiveConfig.NOTES_MAX,
     too_long: ts("must be less than %{max} letters long.", max: ArchiveConfig.NOTES_MAX)
 
+  after_update :admin_hidden_series_notification, if: :hidden_by_admin_changed?
   after_save :adjust_restricted
   after_update_commit :expire_caches, :update_work_index
 
@@ -307,4 +308,14 @@ def creators
   def work_types
     works.map(&:work_types).flatten.uniq
   end
+
+  private
+
+  def admin_hidden_series_notification
+    return unless hidden_by_admin?
+
+    users.each do |user|
+      UserMailer.send_series_hidden_notification(id, user.id).deliver_later
+    end
+  end
 end

app/views/user_mailer/admin_hidden_bookmark_notification.html.erb

@@ -0,0 +1,13 @@
+<% content_for :message do %>
+  <p><%= t("mailer.general.greeting.formal_html", name: style_bold(@user.login)) %></p>
+
+  <p><%= t(".hidden.html", title: style_creation_link(@bookmark.bookmarkable.title, @bookmark)) %></p>
+
+  <p><%= t(".access") %></p>
+
+  <p><%= t(".check_email") %></p>
+
+  <p><%= t(".tos_violation.html", tos_link: tos_link(t(".tos"))) %></p>
+
+  <p><%= t(".help.html", contact_abuse_link: abuse_link(t(".contact_abuse"))) %></p>
+<% end %>

app/views/user_mailer/admin_hidden_bookmark_notification.text.erb

@@ -0,0 +1,13 @@
+<% content_for :message do %>
+<%= t("mailer.general.greeting.formal_html", name: @user.login) %>
+
+<%= t(".hidden.text", title: @bookmark.bookmarkable.title, bookmark_link: bookmark_url(@bookmark)) %>
+
+<%= t(".access") %>
+
+<%= t(".check_email") %>
+
+<%= t(".tos_violation.text", tos_url: tos_url) %>
+
+<%= t(".help.text", contact_abuse_url: new_abuse_report_url) %>
+<% end %>

app/views/user_mailer/admin_hidden_series_notification.html.erb

@@ -0,0 +1,13 @@
+<% content_for :message do %>
+  <p><%= t("mailer.general.greeting.formal_html", name: style_bold(@user.login)) %></p>
+
+  <p><%= t(".hidden.html", title: style_creation_link(@series.title, @series)) %></p>
+
+  <p><%= t(".access") %></p>
+
+  <p><%= t(".check_email") %></p>
+
+  <p><%= t(".tos_violation.html", tos_link: tos_link(t(".tos"))) %></p>
+
+  <p><%= t(".help.html", contact_abuse_link: abuse_link(t(".contact_abuse"))) %></p>
+<% end %>

app/views/user_mailer/admin_hidden_series_notification.text.erb

@@ -0,0 +1,13 @@
+<% content_for :message do %>
+<%= t("mailer.general.greeting.formal_html", name: @user.login) %>
+
+<%= t(".hidden.text", title: @series.title, series_url: series_url(@series)) %>
+
+<%= t(".access") %>
+
+<%= t(".check_email") %>
+
+<%= t(".tos_violation.text", tos_url: tos_url) %>
+
+<%= t(".help.text", contact_abuse_url: new_abuse_report_url) %>
+<% end %>

test/mailers/previews/user_mailer_preview.rb

@@ -54,6 +54,18 @@ def change_email
     UserMailer.change_email(user.id, old_email, new_email)
   end
 
+  def admin_hidden_bookmark_notification
+    creator = create(:user, :for_mailer_preview)
+    bookmark = create(:bookmark, pseud: creator.default_pseud)
+    UserMailer.admin_hidden_bookmark_notification(bookmark.id, creator.id)
+  end
+
+  def admin_hidden_series_notification
+    series = create(:series)
+    creator = create(:user, :for_mailer_preview)
+    UserMailer.admin_hidden_series_notification(series.id, creator.id)
+  end
+
   private
 
   def creatorship_notification_data(creation_type)