Files
users/src/application/commands/change_email_complete.py

64 lines
2.5 KiB
Python

from src.application.abstractions import IUnitOfWork
from src.application.contracts import IHashService, ILogger, ICache
from src.application.domain.exceptions import ApplicationException
from src.infrastructure.database.decorators import transactional
class ChangeEmailCompleteCommand:
def __init__(
self,
unit_of_work: IUnitOfWork,
hash_service: IHashService,
cache: ICache,
logger: ILogger,
):
self._unit_of_work = unit_of_work
self._hash_service = hash_service
self._cache = cache
self._logger = logger
@transactional
async def __call__(self, *, user_id: str, code: str) -> bool:
code = (code or '').strip()
NEW_USER_PREFIX = 'change_email:new_user:'
NEW_CODE_PREFIX = 'change_email:new_code:'
new_user_key = f'{NEW_USER_PREFIX}{user_id}'
new_code_key = f'{NEW_CODE_PREFIX}{code}'
cached_user_id = await self._cache.get(new_code_key)
if not cached_user_id:
self._logger.info(f'Change email complete failed: code not found (user_id={user_id})')
raise ApplicationException(400, 'Invalid or expired code')
if cached_user_id != user_id:
self._logger.info(f'Change email complete failed: code-user mismatch (user_id={user_id})')
raise ApplicationException(400, 'Invalid or expired code')
raw_value = await self._cache.get(new_user_key)
if not raw_value:
self._logger.info(f'Change email complete failed: user key missing (user_id={user_id})')
raise ApplicationException(400, 'Invalid or expired code')
separator_idx = raw_value.index(':')
code_hash = raw_value[:separator_idx]
new_email = raw_value[separator_idx + 1:]
ok = await self._hash_service.verify(hashed_value=code_hash, plain_value=code)
if not ok:
self._logger.info(f'Change email complete failed: code hash mismatch (user_id={user_id})')
raise ApplicationException(400, 'Invalid or expired code')
user = await self._unit_of_work.user_repository.set_email(user_id=user_id, email=new_email)
await self._cache.set_user(user_id, user)
try:
await self._cache.delete(new_code_key)
await self._cache.delete(new_user_key)
except Exception as e:
self._logger.warning(f'Change email complete cleanup failed (user_id={user_id}): {e}')
self._logger.info(f'Email changed for user_id={user_id}')
return True