Euro 2016 Pool Generator

generator.rb

# GROUP A
# Albania - 401/1
# France - 4.2/1
# Romania 126/1
# Switzerland 51/1

# GROUP B
# England 9/1
# Russia 67/1
# Slovakia 151/1
# Wales 81/1

# GROUP C
# Germany 5.5/1
# Northern Ireland 301/1
# Poland 51/1
# Ukraine 67/1

# GROUP D
# Croatia 26/1
# Czech Republic 126/1
# Spain 5.5/1
# Turkey 67/1

# GROUP E
# Belgium 12/1
# Italy 17/1
# Republic of Ireland 101/1
# Sweden 101/1

# GROUP F
# Austria 41/1
# Hungary 401/1
# Iceland 151/1
# Portugal 15/1


TIER_1_TEAMS = [
  { team: 'France', group: 'A' },
  { team: 'England', group: 'B' },
  { team: 'Germany', group: 'C' },
  { team: 'Spain', group: 'D' },
  { team: 'Belgium', group: 'E' },
  { team: 'Portugal', group: 'F' }
]

TIER_2_TEAMS = [
  { team: 'Switzerland', group: 'A' },
  { team: 'Russia', group: 'B' },
  { team: 'Poland', group: 'C' },
  { team: 'Croatia', group: 'D' },
  { team: 'Italy', group: 'E' },
  { team: 'Austria', group: 'F' }
]

TIER_3_TEAMS = [
  { team: 'Romania', group: 'A' },
  { team: 'Wales', group: 'B' },
  { team: 'Ukraine', group: 'C' },
  { team: 'Turkey', group: 'D' },
  { team: 'Sweden', group: 'E' },
  { team: 'Iceland', group: 'F' }
]

TIER_4_TEAMS = [
  { team: 'Albania', group: 'A' },
  { team: 'Slovakia', group: 'B' },
  { team: 'Northern Ireland', group: 'C' },
  { team: 'Czech Republic', group: 'D' },
  { team: 'Republic of Ireland', group: 'E' },
  { team: 'Hungary', group: 'F' }
]

PLAYERS = ['Eoin', 'Niall', 'Dave', 'Shane' , 'Dan', 'Dylan']

def generateTeams(seed)
  pools = [TIER_1_TEAMS.dup, TIER_2_TEAMS.dup, TIER_3_TEAMS.dup, TIER_4_TEAMS.dup]
  validSequence = false
  result = nil
  while (validSequence == false) do
    Rails.logger.info("Generating...")
    pools.each{ |pool| seed += 1; pool.shuffle!(random: Random.new(seed)) }
    result = PLAYERS.each_with_index.map do |player, index|
      { "#{player}": [pools.first[index], pools.second[index], pools.third[index], pools.fourth[index]]}
    end
    validSequence = result.all? do |player|
      player.values.first.map{ |pool| pool[:group] }.uniq.count == 4
    end
  end
  result
end