module ClockFlipPick

# File lib/clock/flip_pick.rb, line 27
def expand_numbered_senses(picked, pool)
  picked = picked.to_s
  match = picked.match(NUMBERED_SENSE)
  return picked unless match

  indexed = index_numbered_lines(pool)
  start_num = match[1].to_i
  current = indexed[start_num] || picked
  successor = indexed[start_num + 1]
  successor ? "#{current} #{successor}" : current
end

# File lib/clock/flip_pick.rb, line 39
def index_numbered_lines(lines)
  Array(lines).each_with_object({}) do |line, hash|
    sense = line.to_s.match(NUMBERED_SENSE)
    hash[sense[1].to_i] = line if sense
  end
end

# File lib/clock/flip_pick.rb, line 16
def pick_line(lines:, exclude: [], rng: Random.new)
  list = Array(lines).map(&:to_s).reject { |line| line.strip.empty? }
  return nil if list.empty?

  blocked = Array(exclude).map(&:to_s).reject(&:empty?)
  choices = list.reject { |line| blocked.include?(line) }
  choices = list if choices.empty?

  choices.sample(random: rng)
end

# File lib/clock/flip_pick.rb, line 56
def sibling_coordinate(hour, minute)
  case minute % 10
  when 8 then [hour, minute + 1]
  when 9 then [hour, minute - 1]
  end
end

# File lib/clock/flip_pick.rb, line 47
def sibling_last_shown(hour:, minute:, store: RabbotDb)
  sibling = sibling_coordinate(hour, minute)
  return nil unless sibling

  sibling_hour, sibling_minute = sibling
  entry = ClockFlipStore.load_entry(hour: sibling_hour, minute: sibling_minute, store: store)
  entry&.fetch("last_shown", nil)
end