# The game class
class Game < ActiveRecord::Base
  has_many :players, dependent: :destroy
  has_many :users, through: :players
  accepts_nested_attributes_for :players
  validates :title, presence: true

  def start
    # Save the game to the database
    return false unless startable?
    save
    # Start the game TODO
  end

  def validate_startable
    @player_count = players.size
    errors[:players] = 'Must be at least 2 players.'  if @player_count < 2
    errors[:players] = 'Must be less than 5 players.'  if @player_count > 4
  end

  def startable?
    @player_count = players.size
    bool = @player_count.between?(2, 4)
    #bool = status != 'Game Started'
  end

  def add_player_from_user(user)
    return false unless can_accomodate(user)
    self.players.create(user: user)
  end

  def can_accomodate(user)
    !(already_has?(user) || full?)
  end

  def already_has?(user)
    users.include?(user)
  end

  def full?
    players.size >= 4
  end
end