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cyberyan_linkedin_search/backend/apps/accounts/serializers.py
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"""Serializers for registration, login and profile of the API's own users."""
from __future__ import annotations
import logging
from typing import Any
from django.contrib.auth import password_validation
from django.db import IntegrityError
from rest_framework import serializers
from rest_framework_simplejwt.serializers import (
TokenObtainPairSerializer as BaseTokenObtainPairSerializer,
)
from apps.accounts.models import Role, User
audit = logging.getLogger("audit.auth")
class UserSerializer(serializers.ModelSerializer):
can_view_pii = serializers.BooleanField(read_only=True)
class Meta:
model = User
fields = ("id", "email", "full_name", "role", "can_view_pii", "date_joined")
read_only_fields = fields
class RegisterSerializer(serializers.ModelSerializer):
password = serializers.CharField(write_only=True, style={"input_type": "password"})
password_confirm = serializers.CharField(write_only=True, style={"input_type": "password"})
class Meta:
model = User
fields = ("email", "full_name", "password", "password_confirm")
def validate_email(self, value: str) -> str:
return value.strip().lower()
def validate_password(self, value: str) -> str:
# Runs Django's configured validators: length, common passwords, etc.
password_validation.validate_password(value)
return value
def validate(self, attrs: dict[str, Any]) -> dict[str, Any]:
if attrs["password"] != attrs["password_confirm"]:
raise serializers.ValidationError({"password_confirm": "Passwords do not match."})
return attrs
def create(self, validated_data: dict[str, Any]) -> User:
validated_data.pop("password_confirm")
password = validated_data.pop("password")
try:
# Self-service sign-up always yields the least privileged role;
# elevation is an explicit admin action.
return User.objects.create_user(password=password, role=Role.VIEWER, **validated_data)
except IntegrityError as exc: # pragma: no cover - race with unique index
raise serializers.ValidationError(
{"email": "A user with this email already exists."}
) from exc
class TokenObtainPairSerializer(BaseTokenObtainPairSerializer):
"""Adds identity claims to the access token and records an audit event."""
@classmethod
def get_token(cls, user: User): # noqa: ANN206
token = super().get_token(user)
token["role"] = user.role
token["email"] = user.email
return token
def validate(self, attrs: dict[str, Any]) -> dict[str, Any]:
data = super().validate(attrs)
audit.info(
"login_succeeded",
extra={
"event": "login_succeeded",
"user_id": self.user.id,
"user_role": self.user.role,
},
)
data["user"] = UserSerializer(self.user).data
return data
class LogoutSerializer(serializers.Serializer):
refresh = serializers.CharField()