Refactor api/v1/search controller (#3468)

app/controllers/api/v1/search_controller.rb

@@ -1,9 +1,26 @@
 # frozen_string_literal: true
 
 class Api::V1::SearchController < ApiController
+  RESULTS_LIMIT = 5
+
   respond_to :json
 
   def index
-    @search = OpenStruct.new(SearchService.new.call(params[:q], 5, params[:resolve] == 'true', current_account))
+    @search = OpenStruct.new(search_results)
+  end
+
+  private
+
+  def search_results
+    SearchService.new.call(
+      params[:q],
+      RESULTS_LIMIT,
+      resolving_search?,
+      current_account
+    )
+  end
+
+  def resolving_search?
+    params[:resolve] == 'true'
   end
 end