1 files changed, 117 insertions, 1 deletions
diff --git a/app/models/match.rb b/app/models/match.rb
index b5f539b..7b36777 100644
--- a/app/models/match.rb
+++ b/app/models/match.rb
@@ -1,4 +1,120 @@
 class Match < ActiveRecord::Base
 	belongs_to :tournament_stage
-	belongs_to :winner
+	has_many :statistics
+	has_and_belongs_to_many :teams
+
+	belongs_to :winner, class_name: "Team"
+
+	# status:integer
+	before_save { self.status ||= 0 }
+
+	# tournament_stage:references
+	validates_presence_of :tournament_stage
+
+	# winner:references
+	# not validated
+
+	##
+	# Returns whether or not all the statistics have been collected
+	# such that the match may be considered finished.
+	def finished?
+		ok = true
+		tournament_stage.scoring.stats_needed.each do |stat|
+			ok &= !statistics.where(match: self, name: stat).nil?
+		end
+		ok
+	end
+
+	##
+	# Returns all players involved in this match (from all teams).
+	def users
+		ret = []
+		self.teams.each{|t| ret.concat(t.users)}
+		return ret
+	end
+
+	##
+	# Given a sampling class (a class that implements the interface
+	# described in `/lib/sampling/README.md`), this returns which
+	# statistics (in an Array of Strings) an instance of the class
+	# should collect.
+	def stats_from(sampling_class)
+		figure_sampling_methods.map{|stat,klass| (sampling_class==klass) ? stat : nil}.select{|s| not s.nil?}
+	end
+
+	##
+	# Delagates PUT/PATCH HTTP params to the appropriate sampling
+	# methods.
+	def handle_sampling(user, params)
+		method_classes.each do |klass|
+			klass.new(self).handle_user_interaction(user, params)
+		end
+	end
+
+	##
+	# Delagates out rendering forms to the appropriate sampling
+	# methods.
+	def render_sampling(user)
+		require 'set'
+		html = ''
+
+		method_classes.each do |klass|
+			html += '<div>'
+			html += klass.new(self).render_user_interaction(user)
+			html += '</div>'
+		end
+
+		return html.html_safe
+	end
+
+	##
+	# Calls `Sampling#start` on every sampling method that this match
+	# uses.
+	def start_sampling
+		method_classes.each do |klass|
+			klass.new(self).start
+		end
+	end
+
+	private
+	def figure_sampling_methods
+		if @sampling_methods.nil?
+			data = {}
+			needed = self.tournament_stage.scoring.stats_needed
+			methods_names = self.tournament_stage.tournament.sampling_methods
+			methods_names.each do |method_name|
+				method_class = "Sampling::#{method_name.camelcase}".constantize
+				needed.each do |stat|
+					data[stat] ||= {}
+					data[stat][method_class] = method_class.can_get?(stat)
+				end
+			end
+
+			needed.each do |stat|
+				max_val = nil
+				max_pri = 0
+				data[stat].each do |method,priority|
+					if priority > max_pri
+						max_val = method
+						max_pri = priority
+					end
+				end
+				data[stat] = max_val
+			end
+			@sampling_methods = data
+		end
+		return @sampling_methods
+	end
+
+	def method_classes
+		if @method_classes.nil?
+			data = Set.new
+			figure_sampling_methods.each do |stat,method|
+				data.add(method)
+			end
+			@method_classes = data
+		end
+		return @method_classes
+	end
+
 end