new rake task to bulk tag all topics in a category

lib/tasks/tags.rake

@@ -0,0 +1,26 @@
+task "tags:bulk_tag_category", [:tags, :category] => [:environment] do |_, args|
+  tags = args[:tags].split("|")
+  category_id = args[:category]
+
+  if !tags || !category_id
+    puts 'ERROR: Expecting tags:bulk_tag_category["tag",category_id]'
+    exit 1
+  end
+
+  guardian = Guardian.new(Discourse.system_user)
+  category = Category.find(category_id)
+
+  tagged = 0
+  total = category.topics.count
+
+  category.topics.find_each do |topic|
+    DiscourseTagging.tag_topic_by_names(topic, guardian, tags)
+    print_status(tagged += 1, total)
+  end
+
+  puts "", "Done!", ""
+end
+
+def print_status(current, max)
+  print "\r%9d / %d (%5.1f%%)" % [current, max, ((current.to_f / max.to_f) * 100).round(1)]
+end