feat: added users app

users/api/v1/serializers.py

@@ -0,0 +1,73 @@
+from typing import List
+
+from django.conf import settings
+from django.contrib.auth import get_user_model
+from django.contrib.auth.password_validation import get_password_validators, validate_password
+from rest_framework import serializers
+from rest_framework.exceptions import ValidationError
+from rest_framework_simplejwt.serializers import TokenObtainPairSerializer
+
+User = get_user_model()
+
+
+AUTH_PASSWORD_VALIDATORS = getattr(settings, 'AUTH_PASSWORD_VALIDATORS')
+
+
+class UserSerializer(serializers.ModelSerializer):
+    permissions = serializers.SerializerMethodField()
+
+    def get_permissions(self, obj: User) -> List[str]:
+        group_permissions = obj.get_group_permissions()
+        user_permissions = obj.get_user_permissions()
+
+        return sorted(user_permissions.union(group_permissions))
+
+    class Meta:
+        model = User
+        fields = (
+            'username',
+            'email',
+            'first_name',
+            'last_name',
+            'is_staff',
+            'is_superuser',
+            'permissions',
+        )
+        read_only_fields = ('username', 'code', 'is_staff', 'is_superuser', 'permissions', )
+
+
+class UpdatePasswordSerializer(serializers.ModelSerializer):
+    old_password = serializers.CharField(write_only=True)
+    new_password = serializers.CharField(write_only=True)
+    new_password2 = serializers.CharField(write_only=True)
+
+    def validate_old_password(self, password):
+        user = self.context.get('request').user
+
+        if not user.check_password(password):
+            raise ValidationError('Wrong old password')
+
+        return password
+
+    def validate_new_password(self, password):
+        old_password = self.context.get('request').data.get('old_password')
+
+        if password == old_password:
+            raise ValidationError('Password can\'t be the same as the old one')
+
+        password2 = self.context.get('request').data.get('new_password2')
+        if password != password2:
+            raise ValidationError('Password mismatch')
+
+        validate_password(password, password_validators=get_password_validators(AUTH_PASSWORD_VALIDATORS))
+
+        return password
+
+    def save(self, *args, **kwargs):
+        new_password = self.validated_data.get('new_password')
+        self.instance.set_password(new_password)
+        self.instance.save()
+
+    class Meta:
+        model = User
+        fields = ('old_password', 'new_password', 'new_password2', )