shogi_server/league/persistent.rb

   1 module ShogiServer
   2
   3 class League
   4   #
   5   # This manages those players who have their player_id.
   6   # Since mk_rate mainly updates the yaml file, basically,
   7   # this only reads data. But this writes some properties.
   8   # TODO Such data should be facoted out to another file
   9   #
  10   class Persistent
  11     def initialize(filename)
  12       @db = YAML::Store.new(filename)
  13       @db.transaction do |pstore|
  14         @db['players'] ||= Hash.new
  15       end
  16     end
  17
  18     #
  19     # trancaction=true means read only
  20     #
  21     def each_group(transaction=false)
  22       @db.transaction(transaction) do
  23         groups = @db["players"] || Hash.new
  24         groups.each do |group, players|
  25           yield group,players
  26         end
  27       end
  28     end
  29
  30     def load_player(player)
  31       return unless player.player_id
  32
  33       hash = nil
  34       each_group(true) do |group, players|
  35         hash = players[player.player_id]
  36         break if hash
  37       end
  38       return unless hash
  39
  40       # a current user
  41       player.name          = hash['name']
  42       player.rate          = hash['rate'] || 0
  43       player.modified_at   = hash['last_modified']
  44       player.rating_group  = hash['rating_group']
  45       player.win           = hash['win']  || 0
  46       player.loss          = hash['loss'] || 0
  47       player.last_game_win = hash['last_game_win'] || false
  48     end
  49
  50     def save(player)
  51       return unless player.player_id
  52
  53       each_group do |group, players|
  54         hash = players[player.player_id]
  55         if hash
  56           # write only this property.
  57           # the others are updated by ./mk_rate
  58           hash['last_game_win'] = player.last_game_win
  59           break
  60         end
  61       end
  62     end
  63
  64     def get_players
  65       players = []
  66       each_group(true) do |group, players_hash|
  67         players << players_hash.keys
  68       end
  69       return players.flatten.collect do |player_id|
  70         p = BasicPlayer.new
  71         p.player_id = player_id
  72         load_player(p)
  73         p
  74       end
  75     end
  76   end # class Persistent
  77
  78 end # class League
  79 end # module ShogiServer