require 'acpc_poker_match_state/players_at_the_table'
require 'acpc_poker_types/player'
require 'acpc_poker_types/game_definition'
require 'acpc_poker_basic_proxy/basic_proxy'

require 'contextual_exceptions'
using ContextualExceptions::ClassRefinement

module AcpcPokerPlayerProxy
  class PlayerProxy
    include AcpcPokerTypes
    include AcpcPokerMatchState
    include AcpcPokerBasicProxy

    exceptions :match_ended

    # @return [PlayersAtTheTable] Summary of the progression of the match
    #  in which, this player is participating, since this object's instantiation.
    attr_reader :players_at_the_table

    attr_reader :game_def

    attr_reader :users_seat

    attr_reader :player_names

    attr_reader :number_of_hands

    # @param [DealerInformation] dealer_information Information about the dealer to which this bot should connect.
    # @param [GameDefinition, #to_s] game_definition_argument A game definition; either a +GameDefinition+ or the name of the file containing a game definition.
    # @param [String] player_names The names of the players in this match.
    # @param [Integer] number_of_hands The number of hands in this match.
    def initialize(
      dealer_information,
      users_seat,
      game_definition_argument,
      player_names='user p2',
      number_of_hands=1
    )
      @game_def = if game_definition_argument.kind_of?(
        GameDefinition
      )
        game_definition_argument
      else
        GameDefinition.parse_file(game_definition_argument)
      end
      @basic_proxy = BasicProxy.new dealer_information

      @player_names = player_names.split(/,?\s+/)

      @users_seat = users_seat

      @number_of_hands = number_of_hands

      @players_at_the_table = create_players_at_the_table

      yield @players_at_the_table if block_given?

      update_match_state_if_necessary! do |players_at_the_table|
        yield players_at_the_table if block_given?
      end
    end

    # Player action interface
    # @param [PokerAction] action The action to take.
    def play!(action)
      if @players_at_the_table.match_ended?
        raise MatchEnded, "Cannot take action #{action} because the match has ended!"
      end

      @basic_proxy.send_action action

      update_match_state! do |players_at_the_table|
        yield @players_at_the_table = players_at_the_table
      end
    end

    private

    def update_match_state_if_necessary!
      return self if @players_at_the_table.users_turn_to_act? || @players_at_the_table.match_ended?

      update_match_state! do |players_at_the_table|
        yield players_at_the_table
      end
    end

    def update_match_state!
      @players_at_the_table.update!(@basic_proxy.receive_match_state!)

      yield @players_at_the_table

      update_match_state_if_necessary! do |players_at_the_table|
        yield players_at_the_table
      end
    end

    def create_players_at_the_table
      PlayersAtTheTable.seat_players(
        @game_def,
        @player_names,
        @users_seat,
        @number_of_hands
      )
    end
  end
end