import logging
import uuid
import hmac
import hashlib

from . import config


def encrypt_phone(phone):
    return hmac.new(
        config.PHONE_HMAC_KEY.encode("utf-8"),
        phone.encode("utf-8"),
        hashlib.sha256,
    ).hexdigest()


def create_session_token():
    """生成写入 auth_sessions 的会话 token（长度适合 token VARCHAR(64)）。"""
    return uuid.uuid4().hex + uuid.uuid4().hex[:16]