completed authentication serializers

Pipfile

@@ -7,8 +7,8 @@ name = "pypi"
 django = "*"
 python-dotenv = "*"
 djangorestframework = "*"
-django-rest-swagger = "*"
 drf-yasg = "*"
+pyjwt = "*"
 
 [dev-packages]
 black = "*"

Pipfile.lock

@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "e809082b9f93f07ff5ab032b2b74852d5953598169a20d6a35c8308b6c2f14ab"
+            "sha256": "ecb5c24f0cd1dff8305c31b43f5cfdc663cf0435e9e672c44269060b890308fb"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -288,6 +288,15 @@
             "markers": "python_version >= '3.7'",
             "version": "==23.2"
         },
+        "pyjwt": {
+            "hashes": [
+                "sha256:57e28d156e3d5c10088e0c68abb90bfac3df82b40a71bd0daa20c65ccd5c23de",
+                "sha256:59127c392cc44c2da5bb3192169a91f429924e17aff6534d70fdc02ab3e04320"
+            ],
+            "index": "pypi",
+            "markers": "python_version >= '3.7'",
+            "version": "==2.8.0"
+        },
         "python-dotenv": {
             "hashes": [
                 "sha256:e324ee90a023d808f1959c46bcbc04446a10ced277783dc6ee09987c37ec10ca",

authentication/admin.py

@@ -0,0 +1,3 @@
+from django.contrib import admin
+
+# Register your models here.

authentication/apps.py

@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class AuthenticationConfig(AppConfig):
+    default_auto_field = "django.db.models.BigAutoField"
+    name = "authentication"

authentication/backends.py

@@ -0,0 +1,26 @@
+import jwt
+from django.conf import settings
+from django.contrib.auth.models import User
+from rest_framework import authentication, exceptions
+
+
+class JWTAuthentication(authentication.BaseAuthentication):
+    def authenticate(self, request):
+
+        auth_data = authentication.get_authorization_header(request)
+
+        if not auth_data:
+            return None
+
+        prefix, token = auth_data.decode("utf-8").split(" ")
+
+        try:
+            payload = jwt.decode(token, settings.JWT_SECRET_KEY, algorithms="HS256")
+            user = User.objects.get(username=payload["username"])
+            return (user, token)
+        except jwt.DecodeError as err:
+            raise exceptions.AuthenticationFailed("Your token is invalid, please login")
+        except jwt.ExpiredSignatureError as err:
+            raise exceptions.AuthenticationFailed("Your token is expired, login")
+
+        return super().authenticate(request)

authentication/models.py

@@ -0,0 +1,3 @@
+from django.db import models
+
+# Create your models here.

authentication/serializers.py

@@ -0,0 +1,32 @@
+from django.contrib.auth.models import User
+from rest_framework import serializers
+
+
+class UserSerializer(serializers.ModelSerializer):
+    password = serializers.CharField(max_length=65, min_length=8, write_only=True)
+    email = serializers.EmailField(max_length=255)
+    first_name = serializers.CharField(max_length=255)
+    last_name = serializers.CharField(max_length=255)
+
+    class Meta:
+        model = User
+        fields = ["username", "first_name", "last_name", "email", "password"]
+
+    def validate(self, attrs):
+
+        email = attrs.get("email", "")
+        if User.objects.filter(email=email).exists():
+            raise serializers.ValidationError({"error": "Email is already in use"})
+        return super().validate(attrs)
+
+    def create(self, validated_data):
+        return User.objects.create_user(**validated_data)
+
+
+class LoginSerializer(serializers.ModelSerializer):
+    password = serializers.CharField(max_length=65)
+    username = serializers.CharField(max_length=255)
+
+    class Meta:
+        model = User
+        fields = ["username", "password"]

authentication/tests.py

@@ -0,0 +1,3 @@
+from django.test import TestCase
+
+# Create your tests here.

authentication/views.py

@@ -0,0 +1,3 @@
+from django.shortcuts import render
+
+# Create your views here.

products/migrations/0002_remove_product_brand_remove_product_supplier_and_more.py

@@ -0,0 +1,27 @@
+# Generated by Django 5.0.3 on 2024-03-05 21:08
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("products", "0001_initial"),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name="product",
+            name="brand",
+        ),
+        migrations.RemoveField(
+            model_name="product",
+            name="supplier",
+        ),
+        migrations.DeleteModel(
+            name="Brand",
+        ),
+        migrations.DeleteModel(
+            name="Supplier",
+        ),
+    ]

store/settings.py

@@ -55,10 +55,14 @@ THIRD_PARTY_APPS = [
 
 LOCAL_APPS = [
     "products.apps.ProductsConfig",
+    "authentication.apps.AuthenticationConfig",
 ]
 
 INSTALLED_APPS = DJANGO_APPS + THIRD_PARTY_APPS + LOCAL_APPS
 
+# JWT settings
+JWT_SECRET_KEY = os.environ.get("JWT_SECRET_KEY")
+
 MIDDLEWARE = [
     "django.middleware.security.SecurityMiddleware",
     "django.contrib.sessions.middleware.SessionMiddleware",