feat(bank-integration): optional registry loading + "Load Data" button

The Excel import dialog on the Bank Transaction list gains an "Also load
counterparties & purposes" checkbox (default on — preserves current
behaviour). When unchecked, only Bank Transactions are created and the
Bank Integration Customer/Supplier/Purpose registries are left alone.

The Bank Integration form gains a "Load Data" button: pick an Excel
preset + file and choose which registries to populate (Customers /
Suppliers / Purposes checkboxes, like the standard data import). It runs
the same upsert logic but creates no Bank Transactions — the file-based
counterpart to kapital_bank's API-driven counterparty/purpose loaders.
Backed by jey_erp.bank_integration.import_api.load_registries_from_excel.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

jey_erp/bank_integration/import_api.py

@@ -4,7 +4,7 @@ import json
 
 import frappe
 from frappe import _
-from frappe.utils import flt
+from frappe.utils import cint, flt
 
 from jey_erp.bank_integration.excel_parser import parse_excel
 
@@ -48,8 +48,14 @@ def parse_excel_for_preview(file_url, preset_name, bank_integration, bank_accoun
 
 
 @frappe.whitelist()
-def import_bulk_bt(txn_list, bank_integration, bank_account):
-	"""Enqueue bulk Bank Transaction creation as a background job."""
+def import_bulk_bt(txn_list, bank_integration, bank_account, load_registries=1):
+	"""Enqueue bulk Bank Transaction creation as a background job.
+
+	load_registries: when truthy, also upsert counterparties (→ Bank Integration
+	Customer/Supplier by direction) and purpose keywords (→ Bank Integration
+	Purpose) with status=New, exactly as before. When falsy, only Bank
+	Transactions are created.
+	"""
 	if isinstance(txn_list, str):
 		txn_list = json.loads(txn_list)
 
@@ -61,6 +67,7 @@ def import_bulk_bt(txn_list, bank_integration, bank_account):
 		bank_integration=bank_integration,
 		bank_account=bank_account,
 		user=user,
+		load_registries=cint(load_registries),
 		queue="default",
 		timeout=600,
 	)
@@ -68,8 +75,8 @@ def import_bulk_bt(txn_list, bank_integration, bank_account):
 	return {"success": True, "enqueued": True, "total": len(txn_list)}
 
 
-def _process_bulk_bt_import(txn_list, bank_integration, bank_account, user):
-	"""Background job: create BT + upsert registry rows for each transaction."""
+def _process_bulk_bt_import(txn_list, bank_integration, bank_account, user, load_registries=1):
+	"""Background job: create BT (+ optionally upsert registry rows) for each transaction."""
 	frappe.set_user(user)
 
 	bi = frappe.get_doc("Bank Integration", bank_integration)
@@ -102,6 +109,7 @@ def _process_bulk_bt_import(txn_list, bank_integration, bank_account, user):
 			drcr = (txn.get("drcr") or "D").upper()
 			purpose = (txn.get("purpose") or "").strip()
 
+			if load_registries:
 				if counterparty:
 					if drcr == "C":
 						if _upsert_customer(counterparty, contr_voen, contr_iban, bank_integration):
@@ -258,3 +266,48 @@ def update_bank_account_bi_default(bank_account, bi_type, bi_name):
 	}, update_modified=False)
 	frappe.db.commit()
 	return {"success": True}
+
+
+@frappe.whitelist()
+def load_registries_from_excel(file_url, preset_name, bank_integration,
+                               load_customers=1, load_suppliers=1, load_purposes=1):
+	"""Parse an Excel statement and upsert ONLY the selected reference registries
+	(Bank Integration Customer / Supplier / Purpose) — no Bank Transactions.
+	This is the "Load Data" action on the Bank Integration form, the file-based
+	counterpart to kapital_bank's API-driven counterparty/purpose loaders."""
+	load_customers = cint(load_customers)
+	load_suppliers = cint(load_suppliers)
+	load_purposes = cint(load_purposes)
+	if not (load_customers or load_suppliers or load_purposes):
+		return {"success": False, "message": _("Select at least one type to load.")}
+
+	transactions = parse_excel(file_url, preset_name)
+
+	new_c = new_s = new_p = 0
+	for txn in transactions:
+		counterparty = (txn.get("counterparty") or "").strip()
+		contr_voen = (txn.get("contr_voen") or "").strip()
+		contr_iban = (txn.get("contr_iban") or "").strip()
+		drcr = (txn.get("drcr") or "D").upper()
+		purpose = (txn.get("purpose") or "").strip()
+
+		if counterparty:
+			if drcr == "C" and load_customers:
+				if _upsert_customer(counterparty, contr_voen, contr_iban, bank_integration):
+					new_c += 1
+			elif drcr == "D" and load_suppliers:
+				if _upsert_supplier(counterparty, contr_voen, contr_iban, bank_integration):
+					new_s += 1
+
+		if purpose and load_purposes:
+			if _upsert_purpose(purpose, drcr, bank_integration):
+				new_p += 1
+
+	frappe.db.commit()
+	return {
+		"success": True,
+		"total_rows": len(transactions),
+		"new_customers": new_c,
+		"new_suppliers": new_s,
+		"new_purposes": new_p,
+	}

jey_erp/jey_erp/doctype/bank_integration/bank_integration.js

@@ -5,6 +5,11 @@ frappe.ui.form.on('Bank Integration', {
 	refresh(frm) {
 		if (frm.is_new()) return;
 
+		// === Load Data (file-based, registry-only) ===
+		frm.add_custom_button(__('Load Data'), () => {
+			_show_load_data_dialog(frm);
+		});
+
 		// === Accounts group ===
 		frm.add_custom_button(__('Match accounts to Bank Accounts'), () => {
 			_safe(frm, () => _call(frm, 'jey_erp.bank_integration.matching.match_similar_accounts',
@@ -133,3 +138,91 @@ function _call(frm, method, args, onSuccess) {
 		},
 	});
 }
+
+function _show_load_data_dialog(frm) {
+	const d = new frappe.ui.Dialog({
+		title: __('Load Data from Excel'),
+		fields: [
+			{
+				fieldname: 'preset',
+				fieldtype: 'Link',
+				options: 'Bank Integration Excel Preset',
+				label: __('Excel Preset'),
+				reqd: 1,
+			},
+			{
+				fieldname: 'file_url',
+				fieldtype: 'Attach',
+				label: __('Excel File'),
+				reqd: 1,
+			},
+			{ fieldname: 'sec_what', fieldtype: 'Section Break', label: __('What to load') },
+			{
+				fieldname: 'load_customers',
+				fieldtype: 'Check',
+				label: __('Customers (incoming counterparties)'),
+				default: 1,
+			},
+			{
+				fieldname: 'load_suppliers',
+				fieldtype: 'Check',
+				label: __('Suppliers (outgoing counterparties)'),
+				default: 1,
+			},
+			{
+				fieldname: 'load_purposes',
+				fieldtype: 'Check',
+				label: __('Purpose keywords'),
+				default: 1,
+			},
+		],
+		primary_action_label: __('Load'),
+		primary_action(values) {
+			if (!values.load_customers && !values.load_suppliers && !values.load_purposes) {
+				frappe.msgprint({
+					title: __('Nothing Selected'),
+					indicator: 'orange',
+					message: __('Pick at least one type to load.'),
+				});
+				return;
+			}
+			d.disable_primary_action();
+			frappe.call({
+				method: 'jey_erp.bank_integration.import_api.load_registries_from_excel',
+				args: {
+					file_url: values.file_url,
+					preset_name: values.preset,
+					bank_integration: frm.doc.name,
+					load_customers: values.load_customers ? 1 : 0,
+					load_suppliers: values.load_suppliers ? 1 : 0,
+					load_purposes: values.load_purposes ? 1 : 0,
+				},
+				callback(r) {
+					d.enable_primary_action();
+					if (!r.message || r.message.success === false) {
+						frappe.msgprint({
+							title: __('Error'),
+							indicator: 'red',
+							message: (r.message && r.message.message) || __('Unknown error'),
+						});
+						return;
+					}
+					d.hide();
+					const res = r.message;
+					frappe.msgprint({
+						title: __('Data Loaded'),
+						indicator: 'green',
+						message: __('From {0} rows — new customers: {1}, suppliers: {2}, purposes: {3}',
+							[res.total_rows, res.new_customers, res.new_suppliers, res.new_purposes]),
+					});
+					frm.reload_doc();
+				},
+				error() {
+					d.enable_primary_action();
+					frappe.msgprint({ title: __('Error'), indicator: 'red', message: __('Network error') });
+				},
+			});
+		},
+	});
+	d.show();
+}

jey_erp/public/js/bank_transaction_list.js

@@ -84,6 +84,13 @@ const BIExcelImport = {
 					label: __('Excel File'),
 					reqd: 1,
 				},
+				{
+					fieldname: 'load_registries',
+					fieldtype: 'Check',
+					label: __('Also load counterparties & purposes'),
+					default: 1,
+					description: __('Extract unique counterparties and purpose keywords from the file into the Bank Integration registries (status: New).'),
+				},
 			],
 			primary_action_label: __('Parse'),
 			primary_action(values) {
@@ -251,6 +258,7 @@ const BIExcelImport = {
 				txn_list: JSON.stringify(selected),
 				bank_integration: values.bank_integration,
 				bank_account: values.bank_account,
+				load_registries: values.load_registries ? 1 : 0,
 			},
 			error() {
 				frappe.realtime.off('bi_bt_import_progress');