Add ranking mode

app/controllers/contestants_controller.rb

@@ -1,4 +1,6 @@
 class ContestantsController < ApplicationController
+  include ContestantsConcern
+
   before_action :set_contest
   before_action :set_contestant, only: %i[ destroy edit update]
   before_action :set_completions, only: %i[edit update ]
@@ -6,12 +8,7 @@ class ContestantsController < ApplicationController
   def index
     authorize @contest
 
-    @contestants = @contest.contestants.sort_by { |contestant| [
-      -contestant.completions.where(remaining_pieces: nil).size,
-      (contestant.completions.where(remaining_pieces: nil).size == @contest.puzzles.length ? 1 : 0) * contestant.time_seconds,
-      contestant.completions.size > 0 && contestant.completions[-1].remaining_pieces ? contestant.completions[-1].remaining_pieces : 1000000,
-      contestant.time_seconds
-    ] }
+    @contestants = @contest.contestants.sort_by { |contestant| contestant.name }
     filter_contestants_per_category
   end
 
@@ -111,12 +108,7 @@ class ContestantsController < ApplicationController
   def export
     authorize @contest
 
-    @contestants = @contest.contestants.sort_by { |contestant| [
-      -contestant.completions.where(remaining_pieces: nil).size,
-      (contestant.completions.where(remaining_pieces: nil).size == @contest.puzzles.length ? 1 : 0) * contestant.time_seconds,
-      contestant.completions.size > 0 && contestant.completions[-1].remaining_pieces ? contestant.completions[-1].remaining_pieces : 1000000,
-      contestant.time_seconds
-    ] }
+    @contestants = ranked_contestants(@contest)
 
     respond_to do |format|
       format.csv do