Add media show

app/actions/media/show.rb

@@ -0,0 +1,31 @@
+module Adamantium
+  module Actions
+    module Media
+      class Show < Action
+        include Deps["settings"]
+
+        def handle(req, res)
+          halt 401 unless verify_scope(req: req, scope: :media) || verify_scope(req: req, scope: :create)
+
+          res.body = if req.params[:q] == "source"
+            {
+              items: media_url(params[:file])
+            }.to_json
+          else
+            "Micropub media endpoint"
+          end
+
+          res.status = 200
+        end
+
+        private
+
+        def media_url(filename)
+          pathname = Time.now.strftime("%m-%Y")
+
+          File.join(settings.micropub_site_url, "/media/", "/#{pathname}/", filename).to_s
+        end
+      end
+    end
+  end
+end