Add unsubscribe option to badge and connect emails (#6027)

app/controllers/email_subscriptions_controller.rb

@@ -1,28 +1,25 @@
 class EmailSubscriptionsController < ApplicationController
-  # No need to authorize this because its implicit when unsubbing
+  PREFERRED_EMAIL_NAME = {
+    email_digest_periodic: "DEV digest emails",
+    email_comment_notifications: "comment notifications",
+    email_follower_notifications: "follower notifications",
+    email_mention_notifications: "mention notifications",
+    email_connect_messages: "DEV connect messages",
+    email_unread_notifications: "unread notifications",
+    email_badge_notifications: "badge notifications"
+  }.freeze
+
   def unsubscribe
     verified_params = Rails.application.message_verifier(:unsubscribe).verify(params[:ut])
 
     if verified_params[:expires_at] > Time.current
       user = User.find(verified_params[:user_id])
       user.update(verified_params[:email_type] => false)
-      @email_type = preferred_email_name(verified_params[:email_type])
+      @email_type = PREFERRED_EMAIL_NAME[verified_params[:email_type]]
     else
       render "invalid_token"
     end
   rescue ActiveSupport::MessageVerifier::InvalidSignature
     not_found
   end
-
-  def preferred_email_name(given_email_type)
-    emails_type = {
-      email_digest_periodic: "DEV digest emails",
-      email_comment_notifications: "comment notifications",
-      email_follower_notifications: "follower notifications",
-      email_mention_notifications: "mention notifications",
-      email_connect_messages: "connect messages",
-      email_unread_notifications: "unread notifications"
-    }
-    emails_type[given_email_type]
-  end
 end

app/mailers/notify_mailer.rb

@@ -54,6 +54,7 @@ class NotifyMailer < ApplicationMailer
     @badge_achievement = badge_achievement
     @user = @badge_achievement.user
     @badge = @badge_achievement.badge
+    @unsubscribe = generate_unsubscribe_token(@user.id, :email_badge_notifications)
     mail(to: @user.email, subject: "You just got a badge")
   end
 
@@ -69,6 +70,7 @@ class NotifyMailer < ApplicationMailer
     @message = direct_message
     @user = @message.direct_receiver
     subject = "#{@message.user.name} just messaged you"
+    @unsubscribe = generate_unsubscribe_token(@user.id, :email_connect_messages)
     mail(to: @user.email, subject: subject)
   end