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"""Authentication endpoints: register, login, refresh, logout, me."""
from __future__ import annotations
import contextlib
import logging
from drf_spectacular.utils import extend_schema
from rest_framework import generics, status
from rest_framework.permissions import AllowAny, IsAuthenticated
from rest_framework.request import Request
from rest_framework.response import Response
from rest_framework.views import APIView
from rest_framework_simplejwt.exceptions import TokenError
from rest_framework_simplejwt.tokens import RefreshToken
from rest_framework_simplejwt.views import TokenObtainPairView as BaseTokenObtainPairView
from rest_framework_simplejwt.views import TokenRefreshView as BaseTokenRefreshView
from apps.accounts.models import User
from apps.accounts.serializers import LogoutSerializer, RegisterSerializer, UserSerializer
from apps.core.throttling import LoginRateThrottle
audit = logging.getLogger("audit.auth")
@extend_schema(tags=["auth"])
class RegisterView(generics.CreateAPIView):
"""Self-service sign-up. New accounts always get the ``viewer`` role."""
serializer_class = RegisterSerializer
permission_classes = [AllowAny]
throttle_classes = [LoginRateThrottle]
queryset = User.objects.all()
def create(self, request: Request, *args, **kwargs) -> Response:
serializer = self.get_serializer(data=request.data)
serializer.is_valid(raise_exception=True)
user = serializer.save()
audit.info("user_registered", extra={"event": "user_registered", "user_id": user.id})
return Response(UserSerializer(user).data, status=status.HTTP_201_CREATED)
@extend_schema(tags=["auth"])
class LoginView(BaseTokenObtainPairView):
"""Exchange credentials for an access/refresh token pair."""
permission_classes = [AllowAny]
throttle_classes = [LoginRateThrottle]
@extend_schema(tags=["auth"])
class RefreshView(BaseTokenRefreshView):
"""Rotate a refresh token; the presented token is blacklisted afterwards."""
permission_classes = [AllowAny]
throttle_classes = [LoginRateThrottle]
@extend_schema(tags=["auth"], request=LogoutSerializer, responses={205: None})
class LogoutView(APIView):
"""Blacklist a refresh token so it can no longer be rotated."""
permission_classes = [IsAuthenticated]
serializer_class = LogoutSerializer
def post(self, request: Request) -> Response:
serializer = LogoutSerializer(data=request.data)
serializer.is_valid(raise_exception=True)
# An already-invalid token is not an error worth surfacing: the
# caller's intent (be logged out) is satisfied either way.
with contextlib.suppress(TokenError):
RefreshToken(serializer.validated_data["refresh"]).blacklist()
audit.info("logout", extra={"event": "logout", "user_id": request.user.id})
return Response(status=status.HTTP_205_RESET_CONTENT)
@extend_schema(tags=["auth"])
class MeView(generics.RetrieveAPIView):
"""Identity and effective privileges of the calling user."""
serializer_class = UserSerializer
permission_classes = [IsAuthenticated]
def get_object(self) -> User:
return self.request.user