module ClockSegment

# File lib/clock/segment.rb, line 55
def clamp_lines(lines)
  value = lines.to_i
  raise ArgumentError, "lines must be #{MIN_LINES}-#{MAX_LINES}" unless (MIN_LINES..MAX_LINES).cover?(value)

  value
end

# File lib/clock/segment.rb, line 76
def compose_segment_rows(time_text, glyphs: GLYPHS_3)
  chars = time_text.to_s.chars
  rows = Array.new(glyphs.values.first.length) { +"" }
  chars.each_with_index do |char, index|
    glyph = glyphs[char] || Array.new(rows.length, "???")
    glyph.each_with_index do |row, row_index|
      rows[row_index] << dotize_segment(row)
      rows[row_index] << FILLER unless index == chars.length - 1
    end
  end
  rows
end

# File lib/clock/segment.rb, line 72
def dotize_segment(text)
  text.to_s.tr(" ", FILLER)
end

# File lib/clock/segment.rb, line 48
def normalize_lines(lines)
  value = lines.to_i
  value = DEFAULT_LINES if value < MIN_LINES
  value = MAX_LINES if value > MAX_LINES
  value
end

# File lib/clock/segment.rb, line 62
def render(hour, minute, lines: DEFAULT_LINES)
  count = normalize_lines(lines)
  return [ClockFlip.format_time(hour, minute)] if count == 1

  time_text = ClockFlip.format_time(hour, minute)
  glyphs = count == 2 ? GLYPHS_2 : GLYPHS_3
  segment_rows = compose_segment_rows(time_text, glyphs: glyphs)
  stretch_rows(segment_rows, count)
end

# File lib/clock/segment.rb, line 89
def stretch_rows(segment_rows, target_lines)
  base = segment_rows.length
  return segment_rows if target_lines == base
  return segment_rows.first(target_lines) if target_lines < base

  extras = target_lines - base
  counts = Array.new(base, 1)
  extras.times { |index| counts[index % base] += 1 }

  segment_rows.each_with_index.flat_map { |row, index| Array.new(counts[index], row) }
end