Replace logic in Ajax::ReportController with use case call

app/controllers/ajax/report_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Ajax::ReportController < AjaxController
   def create
     params.require :id
@@ -11,35 +13,19 @@ class Ajax::ReportController < AjaxController
       return
     end
 
-    unless %w(answer comment question user).include? params[:type]
-      @response[:message] = t(".unknown")
-      return
+    result = UseCase::Report::Create.call(
+      reporter_id: current_user.id,
+      object_id:   params[:id],
+      object_type: params[:type],
+      reason:      params[:reason],
+    )
+
+    if result[:status] == 201
+      @response[:status] = :okay
+      @response[:message] = t(".success", parameter: params[:type].titleize)
+      @response[:success] = true
+    else
+      @response[:message] = t(".error")
     end
-
-    obj = params[:type].strip.capitalize
-
-    object = case obj
-      when 'User'
-        User.find_by_screen_name! params[:id]
-      when 'Question'
-        Question.find params[:id]
-      when 'Answer'
-        Answer.find params[:id]
-      when 'Comment'
-        Comment.find params[:id]
-      else
-        Answer.find params[:id]
-      end
-
-    if object.nil?
-      @response[:message] = t(".notfound", parameter: params[:type])
-      return
-    end
-
-    current_user.report object, params[:reason]
-
-    @response[:status] = :okay
-    @response[:message] = t(".success", parameter: params[:type].titleize)
-    @response[:success] = true
   end
 end