class Sass::Value::Color::Space::Oklab

def bounded?
  false
end

def convert(dest, lightness, a, b, alpha, # rubocop:disable Naming/MethodParameterName
            missing_chroma: false, missing_hue: false)
  case dest
  when OKLCH
    Utils.lab_to_lch(dest, lightness, a, b, alpha)
  else
    missing_lightness = lightness.nil?
    missing_a = a.nil?
    missing_b = b.nil?
    lightness = 0 if missing_lightness
    a = 0 if missing_a
    b = 0 if missing_b
    LMS.convert(
      dest,
      ((Conversions::OKLAB_TO_LMS[0] * lightness) +
       (Conversions::OKLAB_TO_LMS[1] * a) +
       (Conversions::OKLAB_TO_LMS[2] * b))**3,
      ((Conversions::OKLAB_TO_LMS[3] * lightness) +
       (Conversions::OKLAB_TO_LMS[4] * a) +
       (Conversions::OKLAB_TO_LMS[5] * b))**3,
      ((Conversions::OKLAB_TO_LMS[6] * lightness) +
       (Conversions::OKLAB_TO_LMS[7] * a) +
       (Conversions::OKLAB_TO_LMS[8] * b))**3,
      alpha,
      missing_lightness:,
      missing_chroma:,
      missing_hue:,
      missing_a:,
      missing_b:
    )
  end
end

def initialize
  super('oklab', [
    LinearChannel.new('lightness', 0, 1,
                      conventionally_percent: true, lower_clamped: true, upper_clamped: true).freeze,
    LinearChannel.new('a', -0.4, 0.4).freeze,
    LinearChannel.new('b', -0.4, 0.4).freeze
  ].freeze)
end