PARAM product_id AS STRING

product = PRODUCT product_id
IF NOT product THEN
    RETURN {error: "Product not found"}
END IF

IF product.tax_code THEN
    RETURN {tax_code: product.tax_code, tax_class: product.tax_class}
END IF

info = LLM "Get NCM/tax classification for: " + product.name + " " + product.category + ". Return JSON {tax_code, tax_class, description}"
UPDATE "products", product_id, {tax_code: info.tax_code, tax_class: info.tax_class}
RETURN info