1 files changed, 43 insertions, 0 deletions
diff --git a/lib/seeding/fair_ranked_seeding.rb b/lib/seeding/fair_ranked_seeding.rb
new file mode 100644
index 0000000..870ebdd
--- /dev/null
+++ b/lib/seeding/fair_ranked_seeding.rb
@@ -0,0 +1,43 @@
+module Seeding
+	module FairRankedSeeding
+		def self.seed(tournament_stage)
+			matches = tournament.current_stage.matches
+			match = matches.first
+			match_num = 0
+			players_used = 0
+			(tournament.players.count/tournament.min_players_per_team).floor.times do
+				match.teams.push Team.create()
+			end
+			best_first(tournament).each_slice(tournament.min_teams_per_match) do |slice|
+				(0..tournament.min_teams_per_match-1).each do |index|
+					match.teams[index].players += slice[index]
+				end
+				players_used += 1
+				if players_used == tournament.min_players_per_team
+					match_num += 1
+					match = matches[match_num]
+					players_used = 0
+				end
+			end
+		end
+
+		private
+		def self.best_first(tournament)
+			tournament.players.sort {|a, b| better(a, b, tournament) }
+		end
+
+		def self.better(player1, player2, tournament)
+			ps1 = previous_score(player1, tournament)
+			ps2 = previous_score(player2, tournament)
+			ps1 <=> ps2
+		end
+
+		def self.previous_score(player, tournament)
+			score = tournament.statistics.where(match: player.matches.last, user: player, name: :score)
+			if score.nil?
+				return 0
+			end
+			score
+		end
+	end
+end