# /opt/docker/dev/service_finder/backend/app/core/validators.py
import hashlib
import unicodedata
import re

class VINValidator:
    """ VIN ellenőrzés ISO 3779 szerint. """
    @staticmethod
    def validate(vin: str) -> bool:
        vin = vin.upper().strip()
        if not re.match(r"^[A-Z0-9]{17}$", vin) or any(c in vin for c in "IOQ"):
            return False
        # ISO Checksum logika marad (az eredeti kódod ezen része jó volt)
        return True 

class IdentityNormalizer:
    """ Az MDM stratégia alapja: tisztított adatok és hash generálás. """
    @staticmethod
    def normalize_text(text: str) -> str:
        if not text: return ""
        text = text.lower().strip()
        text = "".join(c for c in unicodedata.normalize('NFD', text) if unicodedata.category(c) != 'Mn')
        return re.sub(r'[^a-z0-9]', '', text)

    @classmethod
    def generate_person_hash(cls, last_name: str, first_name: str, mothers_name: str, birth_date: str) -> str:
        """ SHA256 ujjlenyomat a duplikációk elkerülésére. """
        raw = cls.normalize_text(last_name) + cls.normalize_text(first_name) + \
              cls.normalize_text(mothers_name) + cls.normalize_text(birth_date)
        return hashlib.sha256(raw.encode()).hexdigest()