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refactor: get incoming fifo/lifo rate functions

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Re-use same logic for computing incoming rate.
This commit is contained in:
Ankush Menat 2022-01-15 18:06:50 +05:30
parent 97e18a1cd0
commit 61c5ad44d3
1 changed files with 21 additions and 24 deletions
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45
erpnext/stock/utils.py
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@ -9,6 +9,7 @@ from frappe import _
from frappe.utils import cstr, flt, get_link_to_form, nowdate, nowtime
import erpnext
from erpnext.stock.valuation import FIFOValuation, LIFOValuation
class InvalidWarehouseCompany(frappe.ValidationError): pass
@ -228,10 +229,10 @@ def get_incoming_rate(args, raise_error_if_no_rate=True):
else:
valuation_method = get_valuation_method(args.get("item_code"))
previous_sle = get_previous_sle(args)
if valuation_method == 'FIFO':
if valuation_method in ('FIFO', 'LIFO'):
if previous_sle:
previous_stock_queue = json.loads(previous_sle.get('stock_queue', '[]') or '[]')
in_rate = get_fifo_rate(previous_stock_queue, args.get("qty") or 0) if previous_stock_queue else 0
in_rate = _get_fifo_lifo_rate(previous_stock_queue, args.get("qty") or 0, valuation_method) if previous_stock_queue else 0
elif valuation_method == 'Moving Average':
in_rate = previous_sle.get('valuation_rate') or 0
@ -261,29 +262,25 @@ def get_valuation_method(item_code):
def get_fifo_rate(previous_stock_queue, qty):
"""get FIFO (average) Rate from Queue"""
if flt(qty) >= 0:
total = sum(f[0] for f in previous_stock_queue)
return sum(flt(f[0]) * flt(f[1]) for f in previous_stock_queue) / flt(total) if total else 0.0
else:
available_qty_for_outgoing, outgoing_cost = 0, 0
qty_to_pop = abs(flt(qty))
while qty_to_pop and previous_stock_queue:
batch = previous_stock_queue[0]
if 0 < batch[0] <= qty_to_pop:
# if batch qty > 0
# not enough or exactly same qty in current batch, clear batch
available_qty_for_outgoing += flt(batch[0])
outgoing_cost += flt(batch[0]) * flt(batch[1])
qty_to_pop -= batch[0]
previous_stock_queue.pop(0)
else:
# all from current batch
available_qty_for_outgoing += flt(qty_to_pop)
outgoing_cost += flt(qty_to_pop) * flt(batch[1])
batch[0] -= qty_to_pop
qty_to_pop = 0
return _get_fifo_lifo_rate(previous_stock_queue, qty, "FIFO")
return outgoing_cost / available_qty_for_outgoing
def get_lifo_rate(previous_stock_queue, qty):
"""get LIFO (average) Rate from Queue"""
return _get_fifo_lifo_rate(previous_stock_queue, qty, "LIFO")
def _get_fifo_lifo_rate(previous_stock_queue, qty, method):
ValuationKlass = LIFOValuation if method == "LIFO" else FIFOValuation
stock_queue = ValuationKlass(previous_stock_queue)
if flt(qty) >= 0:
total_qty, total_value = stock_queue.get_total_stock_and_value()
return total_value / total_qty if total_qty else 0.0
else:
popped_bins = stock_queue.remove_stock(abs(flt(qty)))
total_qty, total_value = ValuationKlass(popped_bins).get_total_stock_and_value()
return total_value / total_qty if total_qty else 0.0
def get_valid_serial_nos(sr_nos, qty=0, item_code=''):
"""split serial nos, validate and return list of valid serial nos"""