FEATURE: Support an end date for user silencing

app/controllers/admin/users_controller.rb

@@ -274,14 +274,48 @@ class Admin::UsersController < Admin::AdminController
 
   def silence
     guardian.ensure_can_silence_user! @user
-    UserSilencer.silence(@user, current_user, keep_posts: true)
-    render body: nil
+
+    message = params[:message]
+
+    silencer = UserSilencer.new(
+      @user,
+      current_user,
+      silenced_till: params[:silenced_till],
+      reason: params[:reason],
+      context: message,
+      keep_posts: true
+    )
+    if silencer.silence && message.present?
+      Jobs.enqueue(
+        :critical_user_email,
+        type: :account_silenced,
+        user_id: @user.id,
+        user_history_id: silencer.user_history.id
+      )
+    end
+
+    render_json_dump(
+      silence: {
+        silenced: true,
+        silence_reason: params[:reason],
+        silenced_till: @user.silenced_till,
+        suspended_at: @user.silenced_at
+      }
+    )
   end
 
   def unsilence
     guardian.ensure_can_unsilence_user! @user
     UserSilencer.unsilence(@user, current_user)
-    render body: nil
+
+    render_json_dump(
+      unsilence: {
+        silenced: false,
+        silence_reason: nil,
+        silenced_till: nil,
+        suspended_at: nil
+      }
+    )
   end
 
   def reject_bulk