-- Menge + Einheit an Rezeptzutaten; quantity_g bleibt die Standardeinheit (Gramm).

ALTER TABLE food_recipe_ingredients
    ADD COLUMN IF NOT EXISTS quantity_amount NUMERIC(10,3),
    ADD COLUMN IF NOT EXISTS source_unit VARCHAR(20);

COMMENT ON COLUMN food_recipe_ingredients.quantity_amount IS 'Menge in source_unit (z. B. 2 TL)';
COMMENT ON COLUMN food_recipe_ingredients.source_unit IS 'Kanonische Einheit: g, ml, el, tl, prise, stück, …';
COMMENT ON COLUMN food_recipe_ingredients.quantity_g IS 'Umrechnung auf Gramm, wenn Faktor bekannt';

UPDATE food_recipe_ingredients
SET quantity_amount = quantity_g, source_unit = 'g'
WHERE quantity_g IS NOT NULL AND quantity_amount IS NULL AND source_unit IS NULL;

DO $$
BEGIN
    RAISE NOTICE 'Migration 066: recipe ingredient amount + unit';
END $$;