class BarOfProgress

# File lib/bar-of-progress.rb, line 18
def initialize(options = {})
  @options = DEFAULTS.merge(options)

  #massage data because eww.
  @options[:total] = to_d(@options[:total])
  @options[:length] = @options[:length].to_i
end

# File lib/bar-of-progress.rb, line 26
def progress(amount = 0)
  bubbles = clamped_bubbles_for(amount)
  Output.new(bubbles.floor, partial_bubbles_for(bubbles), @options).to_s
end

# File lib/bar-of-progress.rb, line 41
def bubbles_for(amount)
  (to_d(amount) / @options[:total]) * @options[:length]
end

# File lib/bar-of-progress.rb, line 46
def clamp(n, min, max)
  [[n, min].max, max].min
end

# File lib/bar-of-progress.rb, line 33
def clamped_bubbles_for(amount)
  to_d(clamp(bubbles_for(amount), 0, @options[:length]))
end

# File lib/bar-of-progress.rb, line 37
def partial_bubbles_for(bubbles)
  bubbles.truncate(@options[:precision]) % 1 == 0 ? 0 : 1
end

# File lib/bar-of-progress.rb, line 50
def to_d(thing)
  BigDecimal(thing.to_s)
end