initial commit

core/apps/banks/validators/__init__.py

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+from .banks import *  # noqa

core/apps/banks/validators/banks.py

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+# from django.core.exceptions import ValidationError
+from django.core.validators import RegexValidator
+
+from django.utils.translation import gettext_lazy as _
+from django_core.models.base import AbstractBaseModel  # type: ignore
+
+
+bic_validator = RegexValidator(
+    regex=r'^[A-Z]{4}[A-Z]{2}[A-Z0-9]{2}([A-Z0-9]{3})?$',
+    message=_(
+        "Enter a valid BIC/SWIFT code "
+        "(8 or 11 uppercase letters/numbers)."
+    ),
+    code='Invalid BIC/SWIFT code'
+)
+
+name_validator = RegexValidator(
+    regex=r"^[A-Za-z0-9À-ÿ&'\-.,() ]{2,100}$",
+    message=_(
+        "Enter a valid bank name. " 
+        "Only letters, numbers, spaces, hyphens, ampersands, " 
+        "commas, periods, apostrophes, and parentheses are " 
+        "allowed. Length must be 2–100 characters."
+    )
+)
+
+
+class BankValidator:
+    def __init__(self, instance: AbstractBaseModel):
+        self.instance = instance
+
+    def __call__(self):
+        return