add support for arbitrarily many tags

config/prod.secret.example.exs

@@ -17,6 +17,12 @@ config :ex_aws,
 
 config :image_tagger, update_interval_seconds: 1
 config :image_tagger, bucket_name: "bucket"
+
 config :image_tagger, image_folder: "to_review"
-config :image_tagger, bad_folder: "bad"
-config :image_tagger, good_folder: "good"
+
+# Various tags. The tag should atom should correspond
+# to the atom represention of the 'tag' that the front-end
+# pushes through the channel when the reviewer submits a review.
+# Can be arbitrarily many tags.
+config :image_tagger, bad: "bad"
+config :image_tagger, good: "good"

lib/image_tagger/review_server.ex

@@ -37,20 +37,14 @@ defmodule ImageTagger.ReviewServer do
   end
 
   @doc """
-  Archives the given image, copying it to the 'bad' folder.
+  Archives the given image, copying it to the folder associated
+  with the given tag.
   """
-  def archive_image(image, :good) do
-    folder = Application.fetch_env!(:image_tagger, :good_folder)
+  def archive_image(image, tag) when is_atom(tag) do
+    folder = Application.fetch_env!(:image_tagger, tag)
     move_image_to_folder(image, folder)
   end
 
-  @doc """
-  Archives the given image, copying it to the 'good' folder.
-  """
-  def archive_image(image, :bad) do
-    folder = Application.fetch_env!(:image_tagger, :bad_folder)
-    move_image_to_folder(image, folder)
-  end
 
   @doc """
   Adds an image to the ReviewServer signifying that it