Events: kickstart shared scoreboard

app/controllers/contests_controller.rb

@@ -1,5 +1,6 @@
 class ContestsController < ApplicationController
   include CompletionsConcern
+  include ContestsConcern
   include ContestantsConcern
 
   before_action :set_contest, only: %i[ destroy show ]
@@ -168,10 +169,30 @@ class ContestsController < ApplicationController
   end
 
   def scoreboard
-    @contest = Contest.find_by(slug: params[:id])
-    unless @contest && @contest.public
-      skip_authorization
-      not_found and return
+    if active_page("/public/event")
+      @event = Event.find_by(slug: params[:id])
+      unless @event && @event.shared_scoreboard && !@event.contests.where(public: true).empty?
+        skip_authorization
+        not_found and return
+      end
+      if params.key?(:contest_id)
+        begin
+          @contest = Contest.find(params[:contest_id])
+          if @contest.event != @event
+            @contest = @event.contests.where(public: true).first
+          end
+        rescue
+          @contest = @event.contests.where(public: true).first
+        end
+      else
+        @contest = @event.contests.where(public: true).first
+      end
+    else
+      @contest = Contest.find_by(slug: params[:id])
+      unless @contest && @contest.public
+        skip_authorization
+        not_found and return
+      end
     end
     authorize @contest