aii: gl entries for delivery note

stock/utils.py

@@ -163,4 +163,37 @@ def get_warehouse_list(doctype, txt, searchfield, start, page_len, filters):
 			elif webnotes.session.user in warehouse_users:
 				wlist.append([w])
 	return wlist
-	
+
+def get_buying_amount(item_code, warehouse, qty, voucher_no, voucher_detail_no, 
+		stock_ledger_entries, item_sales_bom):
+	if item_sales_bom.get(item_code):
+		# sales bom item
+		buying_amount = 0.0
+		for bom_item in item_sales_bom[item_code]:
+			buying_amount += _get_buying_amount(voucher_no, "[** No Item Row **]",
+				item_code, warehouse, bom_item.qty * qty, stock_ledger_entries)
+		return buying_amount
+	else:
+		# doesn't have sales bom
+		return _get_buying_amount(voucher_no, voucher_detail_no, item_code, warehouse, qty, 
+			stock_ledger_entries)
+		
+def _get_buying_amount(voucher_no, item_row, item_code, warehouse, qty, stock_ledger_entries):
+	for i, sle in enumerate(stock_ledger_entries):
+		if sle.voucher_type == "Delivery Note" and sle.voucher_no == voucher_no:
+			if (sle.voucher_detail_no == item_row) or \
+				(sle.item_code == item_code and sle.warehouse == warehouse and \
+				abs(flt(sle.qty)) == qty):
+					buying_amount = flt(stock_ledger_entries[i+1].stock_value) - flt(sle.stock_value)
+
+					return buying_amount
+					
+	return 0.0
+
+def get_sales_bom():
+	item_sales_bom = {}
+	for r in webnotes.conn.sql("""select parent, item_code, qty from `tabSales BOM Item`""",
+	 	as_dict=1):
+			item_sales_bom.setdefault(r.parent, []).append(r)
+			
+	return item_sales_bom