Implement product_csr app

.gitignore

@@ -1 +1,2 @@
 .DS_Store
+.vscode/

.vscode/settings.json

@@ -0,0 +1,4 @@
+{
+  "python.defaultInterpreterPath": "backend/python/env/Scripts/python.exe",
+  "python.terminal.activateEnvironment": true
+}

backend/python/.gitignore

@@ -1,6 +1,9 @@
 __pycache__/
 *.py[cod]
 venv/
+env/
+backend/python/env/
+
 *.env
 
 .env

backend/python/django_app/settings.py

@@ -1,45 +1,31 @@
-"""
-Django settings for backend project.
-
-Generated by 'django-admin startproject' using Django 6.0.2.
-
-For more information on this file, see
-https://docs.djangoproject.com/en/6.0/topics/settings/
-
-For the full list of settings and their values, see
-https://docs.djangoproject.com/en/6.0/ref/settings/
-"""
-
+from dotenv import load_dotenv
+import os
 from pathlib import Path
 
-# Build paths inside the project like this: BASE_DIR / 'subdir'.
-BASE_DIR = Path(__file__).resolve().parent.parent
-
-
-# Quick-start development settings - unsuitable for production
-# See https://docs.djangoproject.com/en/6.0/howto/deployment/checklist/
+load_dotenv()
 
-# SECURITY WARNING: keep the secret key used in production secret!
-SECRET_KEY = "setup key"
+BASE_DIR = Path(__file__).resolve().parent.parent
 
-# SECURITY WARNING: don't run with debug turned on in production!
+SECRET_KEY = os.getenv("SECRET_KEY", "fallback-key")
 DEBUG = True
-
 ALLOWED_HOSTS = []
 
-
-# Application definition
-
 INSTALLED_APPS = [
+
     "django.contrib.admin",
     "django.contrib.auth",
     "django.contrib.contenttypes",
     "django.contrib.sessions",
     "django.contrib.messages",
     "django.contrib.staticfiles",
+    "rest_framework",
+    "rest_framework.authtoken",
+    "product",
+    "product_csr",
 ]
 
 MIDDLEWARE = [
+    "corsheaders.middleware.CorsMiddleware",
     "django.middleware.security.SecurityMiddleware",
     "django.contrib.sessions.middleware.SessionMiddleware",
     "django.middleware.common.CommonMiddleware",
@@ -69,21 +55,13 @@
 
 WSGI_APPLICATION = "django_app.wsgi.application"
 
-
-# Database
-# https://docs.djangoproject.com/en/6.0/ref/settings/#databases
-
 DATABASES = {
     "default": {
         "ENGINE": "django.db.backends.sqlite3",
         "NAME": BASE_DIR / "db.sqlite3",
     }
 }
 
-
-# Password validation
-# https://docs.djangoproject.com/en/6.0/ref/settings/#auth-password-validators
-
 AUTH_PASSWORD_VALIDATORS = [
     {
         "NAME": "django.contrib.auth.password_validation.UserAttributeSimilarityValidator",
@@ -99,25 +77,28 @@
     },
 ]
 
-
-# Internationalization
-# https://docs.djangoproject.com/en/6.0/topics/i18n/
-
 LANGUAGE_CODE = "en-us"
-
 TIME_ZONE = "UTC"
-
 USE_I18N = True
-
 USE_TZ = True
 
+STATIC_URL = "static/"
+DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"
 
-# Static files (CSS, JavaScript, Images)
-# https://docs.djangoproject.com/en/6.0/howto/static-files/
+from mongoengine import connect
 
-STATIC_URL = "static/"
+connect(
+    db="product_db",
+    host="localhost",
+    port=27017,
+)
 
-# Default primary key field type
-# https://docs.djangoproject.com/en/6.0/ref/settings/#default-auto-field
+CORS_ALLOWED_ORIGINS = [
+    "http://localhost:3000",
+]
 
-DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"
+REST_FRAMEWORK = {
+    "DEFAULT_AUTHENTICATION_CLASSES": [
+        "rest_framework.authentication.TokenAuthentication",
+    ],
+}

backend/python/django_app/urls.py

@@ -1,11 +1,20 @@
 from django.contrib import admin
-from django.urls import path
-from django.http import HttpResponse
+from django.urls import path , include
+from django.http import JsonResponse
+
+def hello_name(request):
+    """
+    A simple view that returns 'Hello, {name}' in JSON format.
+    Uses a query parameter named 'name'.
+    """
+    # Get 'name' from the query string, default to 'World' if missing
+    name = request.GET.get("name", "World")
+    return JsonResponse({"message": f"Hello, {name}!"})
 
-def hello_world(request):
-    return HttpResponse("Hello, world! This is our interneers-lab Django server.")
 
 urlpatterns = [
     path('admin/', admin.site.urls),
-    path('hello/', hello_world),
+    path('hello/', hello_name),
+    path('product/',include('product.urls')) ,
+    path('product-csr/',include('product_csr.urls'))
 ]

backend/python/docker-compose.yaml

@@ -1,12 +1,13 @@
+
 services:
   mongodb:
-    image: mongo:8.0
+    image: mongo:6
     container_name: interneers_lab_2026_mongodb
     ports:
       - '27019:27017'
     environment:
-      MONGO_INITDB_ROOT_USERNAME: root
-      MONGO_INITDB_ROOT_PASSWORD: example
+      MONGO_INITDB_ROOT_USERNAME: admin
+      MONGO_INITDB_ROOT_PASSWORD: admin123
     volumes:
       - mongodb_data:/data/db
 

backend/python/product/admin.py

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

backend/python/product/apps.py

@@ -0,0 +1,5 @@
+from django.apps import AppConfig
+
+
+class ProductConfig(AppConfig):
+    name = 'product'

backend/python/product/data.py

@@ -0,0 +1,5 @@
+# in memory storage 
+# all the data related to the product will be stored here on calling 
+# also all products will be stored onlly while server is running
+
+products = [] 

backend/python/product/models.py

@@ -0,0 +1,14 @@
+from django.db import models
+
+# Create your models here.
+# product model (no db becoz of in memory only)
+
+class Product :
+    def __init__(self,id,name,desc,category,price,brand,quantity):
+        self.id = id 
+        self.name = name 
+        self.desc = desc
+        self.category = category
+        self.price = price
+        self.brand = brand 
+        self.quantity = quantity

backend/python/product/tests.py

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

backend/python/product/urls.py

@@ -0,0 +1,10 @@
+from django.urls import path 
+from . import views
+
+
+urlpatterns = [
+    path("products/",views.create_product),
+    path("products/<int:id>/",views.get_product),
+    path("products/<int:id>/update/",views.update_product),
+    path("products/<int:id>/delete/",views.delete_product),
+]

backend/python/product/views.py

@@ -0,0 +1,88 @@
+import json
+from django.http import JsonResponse
+from django.views.decorators.csrf import csrf_exempt
+from .models import Product
+from .data import products
+
+
+@csrf_exempt
+def create_product(request):
+    # GET → fetch all products
+    if request.method == "GET":
+        return JsonResponse({"products": products})
+
+    # POST → create product
+    if request.method == "POST":
+        data = json.loads(request.body)
+
+        required_fields = ["name", "price", "category", "brand", "quantity"]
+        for field in required_fields:
+            if field not in data:
+                return JsonResponse(
+                    {"error": f"{field} is required"},
+                    status=400
+                )
+
+        if data["price"] <= 0:
+            return JsonResponse(
+                {"error": "Price must be positive"},
+                status=400
+            )
+
+        product = Product(
+            id=len(products) + 1,
+            name=data["name"],
+            description=data.get("description", ""),
+            category=data["category"],
+            price=data["price"],
+            brand=data["brand"],
+            quantity=data["quantity"]
+        )
+
+        products.append(product.__dict__)
+
+        return JsonResponse(
+            {"message": "Product created", "product": product.__dict__},
+            status=201
+        )
+
+    return JsonResponse({"error": "Method not allowed"}, status=405)
+
+
+@csrf_exempt
+def get_product(request, id):
+    if request.method != "GET":
+        return JsonResponse({"error": "Method not allowed"}, status=405)
+
+    for product in products:
+        if product["id"] == id:
+            return JsonResponse(product)
+
+    return JsonResponse({"error": "Product not found"}, status=404)
+
+
+@csrf_exempt
+def update_product(request, id):
+    if request.method != "PUT":
+        return JsonResponse({"error": "Method not allowed"}, status=405)
+
+    data = json.loads(request.body)
+
+    for product in products:
+        if product["id"] == id:
+            product.update(data)
+            return JsonResponse(
+                {"message": "Product Updated", "product": product}
+            )
+
+    return JsonResponse({"error": "Product not found"}, status=404)
+
+
+@csrf_exempt
+def delete_product(request, id):
+    if request.method != "DELETE":
+        return JsonResponse({"error": "Method not allowed"}, status=405)
+
+    global products
+    products = [p for p in products if p["id"] != id]
+    return JsonResponse({"message": "Product deleted"})

backend/python/product_csr/admin.py

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

backend/python/product_csr/apps.py

@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class ProductCsrConfig(AppConfig):
+    name = "product_csr"
+