feat: Auto set Party in Bank Transaction

erpnext/accounts/doctype/accounts_settings/accounts_settings.json

@@ -61,7 +61,10 @@
   "column_break_25",
   "frozen_accounts_modifier",
   "tab_break_dpet",
-  "show_balance_in_coa"
+  "show_balance_in_coa",
+  "banking_tab",
+  "enable_party_matching",
+  "enable_fuzzy_matching"
  ],
  "fields": [
   {
@@ -383,14 +386,34 @@
    "fieldname": "show_taxes_as_table_in_print",
    "fieldtype": "Check",
    "label": "Show Taxes as Table in Print"
+  },
+  {
+   "fieldname": "banking_tab",
+   "fieldtype": "Tab Break",
+   "label": "Banking"
+  },
+  {
+   "default": "0",
+   "description": "Auto match and set the Party in Bank Transactions",
+   "fieldname": "enable_party_matching",
+   "fieldtype": "Check",
+   "label": "Enable Automatic Party Matching"
+  },
+  {
+   "default": "0",
+   "depends_on": "enable_party_matching",
+   "description": "Approximately match the description/party name against parties",
+   "fieldname": "enable_fuzzy_matching",
+   "fieldtype": "Check",
+   "label": "Enable Fuzzy Matching"
   }
  ],
  "icon": "icon-cog",
  "idx": 1,
  "index_web_pages_for_search": 1,
  "issingle": 1,
  "links": [],
- "modified": "2023-06-13 18:47:46.430291",
+ "modified": "2023-06-15 16:35:45.123456",
  "modified_by": "Administrator",
  "module": "Accounts",
  "name": "Accounts Settings",

erpnext/accounts/doctype/bank_transaction/auto_match_party.py

@@ -0,0 +1,178 @@
+from typing import Tuple, Union
+
+import frappe
+from frappe.utils import flt
+from rapidfuzz import fuzz, process
+
+
+class AutoMatchParty:
+	"""
+	Matches by Account/IBAN and then by Party Name/Description sequentially.
+	Returns when a result is obtained.
+
+	Result (if present) is of the form: (Party Type, Party,)
+	"""
+
+	def __init__(self, **kwargs) -> None:
+		self.__dict__.update(kwargs)
+
+	def get(self, key):
+		return self.__dict__.get(key, None)
+
+	def match(self) -> Union[Tuple, None]:
+		result = None
+		result = AutoMatchbyAccountIBAN(
+			bank_party_account_number=self.bank_party_account_number,
+			bank_party_iban=self.bank_party_iban,
+			deposit=self.deposit,
+		).match()
+
+		fuzzy_matching_enabled = frappe.db.get_single_value("Accounts Settings", "enable_fuzzy_matching")
+		if not result and fuzzy_matching_enabled:
+			result = AutoMatchbyPartyNameDescription(
+				bank_party_name=self.bank_party_name, description=self.description, deposit=self.deposit
+			).match()
+
+		return result
+
+
+class AutoMatchbyAccountIBAN:
+	def __init__(self, **kwargs) -> None:
+		self.__dict__.update(kwargs)
+
+	def get(self, key):
+		return self.__dict__.get(key, None)
+
+	def match(self):
+		if not (self.bank_party_account_number or self.bank_party_iban):
+			return None
+
+		result = self.match_account_in_party()
+		return result
+
+	def match_account_in_party(self) -> Union[Tuple, None]:
+		"""Check if there is a IBAN/Account No. match in Customer/Supplier/Employee"""
+		result = None
+		parties = get_parties_in_order(self.deposit)
+		or_filters = self.get_or_filters()
+
+		for party in parties:
+			party_result = frappe.db.get_all(
+				"Bank Account", or_filters=or_filters, pluck="party", limit_page_length=1
+			)
+
+			if party == "Employee" and not party_result:
+				# Search in Bank Accounts first for Employee, and then Employee record
+				if "bank_account_no" in or_filters:
+					or_filters["bank_ac_no"] = or_filters.pop("bank_account_no")
+
+				party_result = frappe.db.get_all(
+					party, or_filters=or_filters, pluck="name", limit_page_length=1
+				)
+
+			if party_result:
+				result = (
+					party,
+					party_result[0],
+				)
+				break
+
+		return result
+
+	def get_or_filters(self) -> dict:
+		or_filters = {}
+		if self.bank_party_account_number:
+			or_filters["bank_account_no"] = self.bank_party_account_number
+
+		if self.bank_party_iban:
+			or_filters["iban"] = self.bank_party_iban
+
+		return or_filters
+
+
+class AutoMatchbyPartyNameDescription:
+	def __init__(self, **kwargs) -> None:
+		self.__dict__.update(kwargs)
+
+	def get(self, key):
+		return self.__dict__.get(key, None)
+
+	def match(self) -> Union[Tuple, None]:
+		# fuzzy search by customer/supplier & employee
+		if not (self.bank_party_name or self.description):
+			return None
+
+		result = self.match_party_name_desc_in_party()
+		return result
+
+	def match_party_name_desc_in_party(self) -> Union[Tuple, None]:
+		"""Fuzzy search party name and/or description against parties in the system"""
+		result = None
+		parties = get_parties_in_order(self.deposit)
+
+		for party in parties:
+			filters = {"status": "Active"} if party == "Employee" else {"disabled": 0}
+			names = frappe.get_all(party, filters=filters, pluck=party.lower() + "_name")
+
+			for field in ["bank_party_name", "description"]:
+				if not self.get(field):
+					continue
+
+				result, skip = self.fuzzy_search_and_return_result(party, names, field)
+				if result or skip:
+					break
+
+			if result or skip:
+				# Skip If: It was hard to distinguish between close matches and so match is None
+				# OR if the right match was found
+				break
+
+		return result
+
+	def fuzzy_search_and_return_result(self, party, names, field) -> Union[Tuple, None]:
+		skip = False
+		result = process.extract(query=self.get(field), choices=names, scorer=fuzz.token_set_ratio)
+		party_name, skip = self.process_fuzzy_result(result)
+
+		if not party_name:
+			return None, skip
+
+		return (
+			party,
+			party_name,
+		), skip
+
+	def process_fuzzy_result(self, result: Union[list, None]):
+		"""
+		If there are multiple valid close matches return None as result may be faulty.
+		Return the result only if one accurate match stands out.
+
+		Returns: Result, Skip (whether or not to discontinue matching)
+		"""
+		PARTY, SCORE, CUTOFF = 0, 1, 80
+
+		if not result or not len(result):
+			return None, False
+
+		first_result = result[0]
+		if len(result) == 1:
+			return (first_result[PARTY] if first_result[SCORE] > CUTOFF else None), True
+
+		second_result = result[1]
+		if first_result[SCORE] > CUTOFF:
+			# If multiple matches with the same score, return None but discontinue matching
+			# Matches were found but were too close to distinguish between
+			if first_result[SCORE] == second_result[SCORE]:
+				return None, True
+
+			return first_result[PARTY], True
+		else:
+			return None, False
+
+
+def get_parties_in_order(deposit: float) -> list:
+	parties = ["Supplier", "Employee", "Customer"]  # most -> least likely to receive
+	if flt(deposit) > 0:
+		parties = ["Customer", "Supplier", "Employee"]  # most -> least likely to pay
+
+	return parties

erpnext/accounts/doctype/bank_transaction/bank_transaction.json

@@ -33,7 +33,11 @@
   "unallocated_amount",
   "party_section",
   "party_type",
-  "party"
+  "party",
+  "column_break_3czf",
+  "bank_party_name",
+  "bank_party_account_number",
+  "bank_party_iban"
  ],
  "fields": [
   {
@@ -63,7 +67,7 @@
    "fieldtype": "Select",
    "in_standard_filter": 1,
    "label": "Status",
-   "options": "\nPending\nSettled\nUnreconciled\nReconciled"
+   "options": "\nPending\nSettled\nUnreconciled\nReconciled\nCancelled"
   },
   {
    "fieldname": "bank_account",
@@ -202,11 +206,30 @@
    "fieldtype": "Data",
    "label": "Transaction Type",
    "length": 50
+  },
+  {
+   "fieldname": "column_break_3czf",
+   "fieldtype": "Column Break"
+  },
+  {
+   "fieldname": "bank_party_name",
+   "fieldtype": "Data",
+   "label": "Party Name/Account Holder (Bank Statement)"
+  },
+  {
+   "fieldname": "bank_party_iban",
+   "fieldtype": "Data",
+   "label": "Party IBAN (Bank Statement)"
+  },
+  {
+   "fieldname": "bank_party_account_number",
+   "fieldtype": "Data",
+   "label": "Party Account No. (Bank Statement)"
   }
  ],
  "is_submittable": 1,
  "links": [],
- "modified": "2022-05-29 18:36:50.475964",
+ "modified": "2023-06-06 13:58:12.821411",
  "modified_by": "Administrator",
  "module": "Accounts",
  "name": "Bank Transaction",
@@ -260,4 +283,4 @@
  "states": [],
  "title_field": "bank_account",
  "track_changes": 1
-}
+}

erpnext/accounts/doctype/bank_transaction/bank_transaction.py

@@ -15,6 +15,9 @@ def on_submit(self):
 		self.clear_linked_payment_entries()
 		self.set_status()
 
+		if frappe.db.get_single_value("Accounts Settings", "enable_party_matching"):
+			self.auto_set_party()
+
 	_saving_flag = False
 
 	# nosemgrep: frappe-semgrep-rules.rules.frappe-modifying-but-not-comitting
@@ -146,6 +149,26 @@ def clear_linked_payment_entry(self, payment_entry, for_cancel=False):
 			payment_entry.payment_document, payment_entry.payment_entry, clearance_date, self
 		)
 
+	def auto_set_party(self):
+		from erpnext.accounts.doctype.bank_transaction.auto_match_party import AutoMatchParty
+
+		if self.party_type and self.party:
+			return
+
+		result = AutoMatchParty(
+			bank_party_account_number=self.bank_party_account_number,
+			bank_party_iban=self.bank_party_iban,
+			bank_party_name=self.bank_party_name,
+			description=self.description,
+			deposit=self.deposit,
+		).match()
+
+		if result:
+			party_type, party = result
+			frappe.db.set_value(
+				"Bank Transaction", self.name, field={"party_type": party_type, "party": party}
+			)
+
 
 @frappe.whitelist()
 def get_doctypes_for_bank_reconciliation():