class Faker::Measurement

def check_for_plural(text, number)
  if number && number != 1
    make_plural(text)
  else
    text
  end
end

def define_measurement_locale(amount, locale)
  ensure_valid_amount(amount)
  case amount
  when ALL
    make_plural(fetch("measurement.#{locale}"))
  when NONE
    fetch("measurement.#{locale}")
  else
    locale = check_for_plural(fetch("measurement.#{locale}"), amount)
    "#{amount} #{locale}"
  end
end

def ensure_valid_amount(amount)
  raise ArgumentError, 'invalid amount' unless amount == NONE || amount == ALL || amount.is_a?(Integer) || amount.is_a?(Float)
end

def height(amount: rand(10))
  define_measurement_locale(amount, 'height')
end

def length(amount: rand(10))
  define_measurement_locale(amount, 'length')
end

def make_plural(text)
  case text
  when 'foot'
    'feet'
  when 'inch'
    'inches'
  when 'fluid ounce'
    'fluid ounces'
  when 'metric ton'
    'metric tons'
  else
    "#{text}s"
  end
end

def metric_height(amount: rand(10))
  define_measurement_locale(amount, 'metric_height')
end

def metric_length(amount: rand(10))
  define_measurement_locale(amount, 'metric_length')
end

def metric_volume(amount: rand(10))
  define_measurement_locale(amount, 'metric_volume')
end

def metric_weight(amount: rand(10))
  define_measurement_locale(amount, 'metric_weight')
end

def volume(amount: rand(10))
  define_measurement_locale(amount, 'volume')
end

def weight(amount: rand(10))
  define_measurement_locale(amount, 'weight')
end