Module: KiriminAja::Utils::Volumetric

Defined in:
lib/kiriminaja/utils/volumetric.rb

Class Method Summary collapse

Class Method Details

.calculate(items) ⇒ Object

Returns { length:, width:, height: } as the smallest bounding box across vertical / horizontal / side-by-side stacking strategies.

Each item is a Hash with keys: :qty, :length, :width, :height (string keys are also accepted). Missing values default to 0; qty < 1 is treated as 1.



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# File 'lib/kiriminaja/utils/volumetric.rb', line 14

def calculate(items)
  return { length: 0, width: 0, height: 0 } if items.nil? || items.empty?

  l_vert = w_vert = h_vert = 0
  l_hor  = w_hor  = h_hor  = 0
  l_side = w_side = h_side = 0

  items.each do |it|
    qty = (fetch(it, :qty) || 1).to_i
    qty = 1 if qty < 1
    l = fetch(it, :length) || 0
    w = fetch(it, :width)  || 0
    h = fetch(it, :height) || 0

    h_vert += h * qty
    l_vert = l if l > l_vert
    w_vert = w if w > w_vert

    l_hor += l * qty
    h_hor = h if h > h_hor
    w_hor = w if w > w_hor

    w_side += w * qty
    h_side = h if h > h_side
    l_side = l if l > l_side
  end

  vol_vert = l_vert * w_vert * h_vert
  vol_hor  = l_hor  * w_hor  * h_hor
  vol_side = l_side * w_side * h_side

  if vol_vert <= vol_hor && vol_vert <= vol_side
    { length: l_vert, width: w_vert, height: h_vert }
  elsif vol_hor <= vol_side
    { length: l_hor, width: w_hor, height: h_hor }
  else
    { length: l_side, width: w_side, height: h_side }
  end
end