1 files changed, 70 insertions, 0 deletions
diff --git a/lib/scheduling/round_robin.rb b/lib/scheduling/round_robin.rb
new file mode 100644
index 0000000..c0d68d3
--- /dev/null
+++ b/lib/scheduling/round_robin.rb
@@ -0,0 +1,70 @@
+# http://stackoverflow.com/questions/6648512/scheduling-algorithm-for-a-round-robin-tournament
+module Scheduling
+	class RoundRobin
+		include Rails.application.routes.url_helpers
+
+		def initialize(tournament_stage)
+			@tournament_stage = tournament_stage
+		end
+
+		def create_matches
+			# => find the number of matches and teams to create
+			@num_teams = (tournament.players.count/tournament.min_players_per_team).floor
+			@matches_per_round = (@num_teams / tournament.min_teams_per_match).floor
+
+			# => initialize data and status members
+			@team_pairs ||= Array.new
+			if @team_pairs.empty?
+				@matches_finished = 0
+			end
+
+			# => Create new matches
+			@matches_per_round.times do
+				tournament_stage.matches.create(status: 0, submitted_peer_evaluations: 0)
+			end
+
+			# => seed the first time
+			if @team_pairs.empty?
+				tournament_stage.seeding.seed(tournament_stage)
+				tournament_stage.matches.each {|match| match.teams.each {|team| @team_pairs.push team}}
+			else
+				# => Reorder the list of teams
+				top = @team_pairs.shift
+				@team_pairs.push @team_pairs.shift
+				@team_pairs.unshift top
+
+				# => Add the teams to the matches
+				match = tournament_stage.matches[@matches_finished-1]
+				matches = 1
+				(0..@team_pairs.count-1).each do |i|
+					match.teams += @team_pairs[i]
+					if @team_pairs.count.%(tournament.min_teams_per_match).zero?
+						match = tournament_stage.matches[@matches_finished-1 + matches]
+						matches += 1
+					end
+				end
+
+			end
+
+			# => Set the match statuses to ready (1)
+			tournament_stage.matches.each {|match| match.update(status: 1)}
+
+		end
+
+		def finish_match(match)
+			@matches_finished += 1
+		end
+
+		def graph(current_user)
+		end
+
+		private
+		def tournament_stage
+			@tournament_stage
+		end
+
+		def tournament
+			tournament_stage.tournament
+		end
+	end
+end