from frappe.utils import flt
from erpnext.controllers.taxes_and_totals import get_itemised_tax

def update_itemised_tax_data(doc):
	if not doc.taxes: return

	itemised_tax = get_itemised_tax(doc.taxes)

	for row in doc.items:
		tax_rate = sum([tax.get('tax_rate', 0) for d, tax in itemised_tax.get(row.item_code).items()])

		row.tax_rate = flt(tax_rate, row.precision("tax_rate"))
		row.tax_amount = flt((row.net_amount * tax_rate) / 100, row.precision("net_amount"))
		row.total_amount = flt((row.net_amount + row.tax_amount), row.precision("total_amount"))