class Flip

# File plugins/flip.rb, line 12
def self.command_pattern
  /flip(?: (\d+))?$/i
end

# File plugins/flip.rb, line 49
def self.flip(count_str = nil, rand: -> { Random.rand(2) })
  parsed = parse_count(count_str)
  return parsed[:error] if parsed[:error]

  results = flip_coins(parsed[:count], rand: rand)
  format_results(results)
end

# File plugins/flip.rb, line 33
def self.flip_coin(rand: -> { Random.rand(2) })
  SIDES[rand.call]
end

# File plugins/flip.rb, line 37
def self.flip_coins(count, rand: -> { Random.rand(2) })
  Array.new(count) { flip_coin(rand: rand) }
end

# File plugins/flip.rb, line 41
def self.format_results(results)
  return results.first if results.length == 1

  heads = results.count("heads")
  tails = results.length - heads
  "#{results.join(', ')} (#{heads} heads, #{tails} tails)"
end

# File plugins/flip.rb, line 26
def self.parse_count(count_str)
  count = count_str.nil? ? DEFAULT_COUNT : count_str.to_i
  return { error: usage_message } if count < 1 || count > MAX_COUNT

  { count: count }
end

# File plugins/flip.rb, line 22
def self.usage_message
  "Usage: !flip [count] — e.g. !flip, !flip 5"
end

# File plugins/flip.rb, line 61
def execute(m, count_str = nil)
  flood_safe_reply(m, flip(count_str))
end

# File plugins/flip.rb, line 57
def flip(count_str = nil, **options)
  self.class.flip(count_str, **options)
end