new"> 69
+        # Remove old rating from user, if any
70
+        PostRating.objects.filter(post=post, user=user).delete()
71
+        # Create new rating
72
+        PostRating.objects.create(post=post, user=user, rating=rating)
73
+
74
+    def delete(self, post_id):
75
+        try:
76
+            obj = Post.objects.get(id=post_id)
77
+            obj.delete()
78
+        except Post.DoesNotExist:
79
+            raise ValueError("Post not found")
80
+
81
+    def list(self, page=1, per_page=10, order_by="-created"):
82
+        qs = Post.objects.all().order_by(order_by)
83
+        total = qs.count()
84
+        start = (page - 1) * per_page
85
+        end = start + per_page
86
+        from commu.entities.post import Post as DomainPost
87
+        posts = []
88
+        for obj in qs[start:end]:
89
+            domain_post = DomainPost(
90
+                author_id=str(obj.author.id),
91
+                text=obj.text,
92
+                images=obj.images,
93
+                videos=obj.videos,
94
+            )
95
+            domain_post.id = str(obj.id)
96
+            domain_post.ratings = [
97
+                (str(r.user.id), r.rating)
98
+                for r in obj.ratings.all()
99
+            ]
100
+            posts.append(domain_post)
101
+        return posts, total
102
+
103
+    def update(self, post):
104
+        try:
105
+            obj = Post.objects.get(id=post.id)
106
+            obj.text = post.text
107
+            obj.images = post.images
108
+            obj.videos = post.videos
109
+            obj.save()
110
+            # Optionally update ratings (if part of update)
111
+        except Post.DoesNotExist:
112
+            raise ValueError("Post not found")

+ 55 - 0
core/repositories/django_user_repository.py

@@ -0,0 +1,55 @@
1
+from commu.interfaces.user_repository import UserRepository
2
+from django.contrib.auth.models import User as DjangoUser
3
+
4
+class DjangoUserRepository(UserRepository):
5
+    def add(self, user):
6
+        # user: commu.entities.user.User
7
+        # Map role to Django flags
8
+        is_staff = user.role.value in ("admin", "user") if hasattr(user.role, "value") else user.role in ("admin", "user")
9
+        is_superuser = user.role.value == "admin" if hasattr(user.role, "value") else user.role == "admin"
10
+        obj = DjangoUser.objects.create_user(
11
+            username=user.username,
12
+            password=None,  # You may set/generate a password as needed!
13
+            is_staff=is_staff,
14
+            is_superuser=is_superuser,
15
+        )
16
+        user.id = str(obj.id)
17
+        return user
18
+
19
+    def get(self, user_id):
20
+        try:
21
+            obj = DjangoUser.objects.get(id=user_id)
22
+            from commu.entities.user import User, UserRole
23
+            role = self._role_from_django(obj)
24
+            u = User(
25
+                username=obj.username,
26
+                role=role,
27
+            )
28
+            u.id = str(obj.id)
29
+            return u
30
+        except DjangoUser.DoesNotExist:
31
+            return None
32
+
33
+    def find_by_username(self, username):
34
+        try:
35
+            obj = DjangoUser.objects.get(username=username)
36
+            from commu.entities.user import User, UserRole
37
+            role = self._role_from_django(obj)
38
+            u = User(
39
+                username=obj.username,
40
+                role=role,
41
+            )
42
+            u.id = str(obj.id)
43
+            return u
44
+        except DjangoUser.DoesNotExist:
45
+            return None
46
+
47
+    def _role_from_django(self, user_obj):
48
+        from commu.entities.user import UserRole
49
+        if user_obj.is_superuser:
50
+            return UserRole.ADMIN
51
+        elif user_obj.is_staff:
52
+            return UserRole.USER
53
+        else:
54
+            return UserRole.GUEST
55
+

+ 3 - 0
core/tests.py

@@ -0,0 +1,3 @@
1
+from django.test import TestCase
2
+
3
+# Create your tests here.

+ 0 - 0
core/tests/__init__.py


BIN
core/tests/__pycache__/__init__.cpython-311.pyc


BIN
core/tests/__pycache__/test_post_service_django.cpython-311.pyc


+ 60 - 0
core/tests/test_post_service_django.py

@@ -0,0 +1,60 @@
1
+import pytest
2
+from django.test import TestCase
3
+from django.contrib.auth import get_user_model
4
+
5
+from commu.usecases.post_service import PostService
6
+from commu.entities.user import UserRole
7
+from core.repositories.django_post_repository import DjangoPostRepository
8
+from core.repositories.django_user_repository import DjangoUserRepository
9
+
10
+User = get_user_model()
11
+
12
+class PostServiceIntegrationTest(TestCase):
13
+
14
+    def setUp(self):
15
+        # Use Django's repositories
16
+        self.user_repo = DjangoUserRepository()
17
+        self.post_repo = DjangoPostRepository()
18
+        self.service = PostService(self.post_repo, self.user_repo)
19
+
20
+        # Create some users using Django ORM
21
+        self.admin = User.objects.create_user(username="admin", is_superuser=True, is_staff=True)
22
+        self.user = User.objects.create_user(username="user", is_staff=True)
23
+        self.guest = User.objects.create_user(username="guest")  # Not staff or superuser
24
+
25
+    def test_create_post_by_user(self):
26
+        post = self.service.create_post(str(self.user.id), "Hello Django!", ["img1.png"], ["vid1.mp4"])
27
+        assert post.text == "Hello Django!"
28
+        assert post.images == ["img1.png"]
29
+        assert post.videos == ["vid1.mp4"]
30
+
31
+    def test_guest_cannot_create_post(self):
32
+        with self.assertRaises(PermissionError):
33
+            self.service.create_post(str(self.guest.id), "Forbidden")
34
+
35
+    def test_search_posts(self):
36
+        p1 = self.service.create_post(str(self.user.id), "First Django post")
37
+        p2 = self.service.create_post(str(self.user.id), "Second hello world")
38
+        results = self.service.search_posts("hello")
39
+        assert len(results) == 1
40
+        assert results[0].text == "Second hello world"
41
+
42
+    def test_rate_post(self):
43
+        post = self.service.create_post(str(self.user.id), "Rate me Django!")
44
+        self.service.rate_post(post.id, str(self.admin.id), 5)
45
+        self.service.rate_post(post.id, str(self.user.id), 4)
46
+        updated_post = self.post_repo.get(post.id)
47
+        assert abs(updated_post.average_rating() - 4.5) < 1e-6
48
+
49
+    def test_guest_cannot_rate_post(self):
50
+        post = self.service.create_post(str(self.user.id), "No guest rate")
51
+        with self.assertRaises(PermissionError):
52
+            self.service.rate_post(post.id, str(self.guest.id), 2)
53
+
54
+    def test_rating_bounds(self):
55
+        post = self.service.create_post(str(self.user.id), "Bounds Django")
56
+        with self.assertRaises(ValueError):
57
+            self.service.rate_post(post.id, str(self.admin.id), 0)
58
+        with self.assertRaises(ValueError):
59
+            self.service.rate_post(post.id, str(self.admin.id), 6)
60
+

+ 8 - 0
core/urls.py

@@ -0,0 +1,8 @@
1
+from django.urls import path
2
+from . import views
3
+
4
+urlpatterns = [
5
+    path('posts/create/', views.create_post, name='create_post'),
6
+    path('posts/search/', views.search_posts, name='search_posts'),
7
+    path('posts/rate/', views.rate_post, name='rate_post'),
8
+]

+ 69 - 0
core/views.py

@@ -0,0 +1,69 @@
1
+import json
2
+from django.http import JsonResponse, HttpResponseBadRequest
3
+from django.views.decorators.csrf import csrf_exempt
4
+from django.contrib.auth.decorators import login_required
5
+from commu.usecases.post_service import PostService
6
+from core.repositories.django_post_repository import DjangoPostRepository
7
+from core.repositories.django_user_repository import DjangoUserRepository
8
+
9
+# Service setup (could be moved to app config for larger apps)
10
+user_repo = DjangoUserRepository()
11
+post_repo = DjangoPostRepository()
12
+post_service = PostService(post_repo, user_repo)
13
+
14
+@csrf_exempt
15
+@login_required
16
+def create_post(request):
17
+    if request.method != 'POST':
18
+        return HttpResponseBadRequest("POST only")
19
+    try:
20
+        data = json.loads(request.body.decode())
21
+        text = data.get("text")
22
+        images = data.get("images", [])
23
+        videos = data.get("videos", [])
24
+        if not text:
25
+            return JsonResponse({"error": "Missing post text"}, status=400)
26
+        # Use logged-in Django user as author
27
+        user_id = str(request.user.id)
28
+        post = post_service.create_post(user_id, text, images, videos)
29
+        return JsonResponse({
30
+            "id": post.id,
31
+            "text": post.text,
32
+            "author_id": post.author_id,
33
+            "images": post.images,
34
+            "videos": post.videos
35
+        })
36
+    except Exception as e:
37
+        return JsonResponse({"error": str(e)}, status=400)
38
+
39
+def search_posts(request):
40
+    q = request.GET.get("q", "")
41
+    results = post_service.search_posts(q)
42
+    posts = [{
43
+        "id": p.id,
44
+        "text": p.text,
45
+        "author_id": p.author_id,
46
+        "images": p.images,
47
+        "videos": p.videos,
48
+        "avg_rating": p.average_rating()
49
+    } for p in results]
50
+    return JsonResponse({"results": posts})
51
+
52
+@csrf_exempt
53
+@login_required
54
+def rate_post(request):
55
+    if request.method != 'POST':
56
+        return HttpResponseBadRequest("POST only")
57
+    try:
58
+        data = json.loads(request.body.decode())
59
+        post_id = data.get("post_id")
60
+        rating = data.get("rating")
61
+        if not post_id or rating is None:
62
+            return JsonResponse({"error": "Missing post_id or rating"}, status=400)
63
+        user_id = str(request.user.id)
64
+        post_service.rate_post(post_id, user_id, int(rating))
65
+        return JsonResponse({"ok": True})
66
+    except Exception as e:
67
+        return JsonResponse({"error": str(e)}, status=400)
68
+
69
+

+ 0 - 0
db.sqlite3


+ 0 - 0
django_commu/__init__.py


BIN
django_commu/__pycache__/__init__.cpython-311.pyc


BIN
django_commu/__pycache__/settings.cpython-311.pyc


BIN
django_commu/__pycache__/urls.cpython-311.pyc


BIN
django_commu/__pycache__/wsgi.cpython-311.pyc


+ 16 - 0
django_commu/asgi.py

@@ -0,0 +1,16 @@
1
+"""
2
+ASGI config for django_commu project.
3
+
4
+It exposes the ASGI callable as a module-level variable named ``application``.
5
+
6
+For more information on this file, see
7
+https://docs.djangoproject.com/en/5.2/howto/deployment/asgi/
8
+"""
9
+
10
+import os
11
+
12
+from django.core.asgi import get_asgi_application
13
+
14
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'django_commu.settings')
15
+
16
+application = get_asgi_application()

+ 128 - 0
django_commu/settings.py

@@ -0,0 +1,128 @@
1
+"""
2
+Django settings for django_commu project.
3
+
4
+Generated by 'django-admin startproject' using Django 5.2.4.
5
+
6
+For more information on this file, see
7
+https://docs.djangoproject.com/en/5.2/topics/settings/
8
+
9
+For the full list of settings and their values, see
10
+https://docs.djangoproject.com/en/5.2/ref/settings/
11
+"""
12
+
13
+from pathlib import Path
14
+import os
15
+
16
+# Build paths inside the project like this: BASE_DIR / 'subdir'.
17
+BASE_DIR = Path(__file__).resolve().parent.parent
18
+
19
+
20
+# Quick-start development settings - unsuitable for production
21
+# See https://docs.djangoproject.com/en/5.2/howto/deployment/checklist/
22
+
23
+# SECURITY WARNING: keep the secret key used in production secret!
24
+SECRET_KEY = 'django-insecure-c$ieo22nwe^v#*e$xlh@fath9*t+f8wtqrt9e!op9-ittc=b_x'
25
+
26
+# SECURITY WARNING: don't run with debug turned on in production!
27
+DEBUG = True
28
+
29
+ALLOWED_HOSTS = []
30
+
31
+
32
+# Application definition
33
+
34
+INSTALLED_APPS = [
35
+    'django.contrib.admin',
36
+    'django.contrib.auth',
37
+    'django.contrib.contenttypes',
38
+    'django.contrib.sessions',
39
+    'django.contrib.messages',
40
+    'django.contrib.staticfiles',
41
+    'core',
42
+]
43
+
44
+MIDDLEWARE = [
45
+    'django.middleware.security.SecurityMiddleware',
46
+    'django.contrib.sessions.middleware.SessionMiddleware',
47
+    'django.middleware.common.CommonMiddleware',
48
+    'django.middleware.csrf.CsrfViewMiddleware',
49
+    'django.contrib.auth.middleware.AuthenticationMiddleware',
50
+    'django.contrib.messages.middleware.MessageMiddleware',
51
+    'django.middleware.clickjacking.XFrameOptionsMiddleware',
52
+]
53
+
54
+ROOT_URLCONF = 'django_commu.urls'
55
+
56
+TEMPLATES = [
57
+    {
58
+        'BACKEND': 'django.template.backends.django.DjangoTemplates',
59
+        'DIRS': [],
60
+        'APP_DIRS': True,
61
+        'OPTIONS': {
62
+            'context_processors': [
63
+                'django.template.context_processors.request',
64
+                'django.contrib.auth.context_processors.auth',
65
+                'django.contrib.messages.context_processors.messages',
66
+            ],
67
+        },
68
+    },
69
+]
70
+
71
+WSGI_APPLICATION = 'django_commu.wsgi.application'
72
+
73
+
74
+# Database
75
+# https://docs.djangoproject.com/en/5.2/ref/settings/#databases
76
+
77
+DATABASES = {
78
+    'default': {
79
+        'ENGINE': 'django.db.backends.postgresql',
80
+        'NAME': os.getenv('DB_NAME', 'commudb'),
81
+        'USER': os.getenv('DB_USER', 'commuuser'),
82
+        'PASSWORD': os.getenv('DB_PASSWORD', 'commupass'),
83
+        'HOST': os.getenv('DB_HOST', 'db'),
84
+        'PORT': os.getenv('DB_PORT', '5432'),
85
+    }
86
+}
87
+
88
+
89
+# Password validation
90
+# https://docs.djangoproject.com/en/5.2/ref/settings/#auth-password-validators
91
+
92
+AUTH_PASSWORD_VALIDATORS = [
93
+    {
94
+        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
95
+    },
96
+    {
97
+        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
98
+    },
99
+    {
100
+        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
101
+    },
102
+    {
103
+        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
104
+    },
105
+]
106
+
107
+
108
+# Internationalization
109
+# https://docs.djangoproject.com/en/5.2/topics/i18n/
110
+
111
+LANGUAGE_CODE = 'en-us'
112
+
113
+TIME_ZONE = 'UTC'
114
+
115
+USE_I18N = True
116
+
117
+USE_TZ = True
118
+
119
+
120
+# Static files (CSS, JavaScript, Images)
121
+# https://docs.djangoproject.com/en/5.2/howto/static-files/
122
+
123
+STATIC_URL = 'static/'
124
+
125
+# Default primary key field type
126
+# https://docs.djangoproject.com/en/5.2/ref/settings/#default-auto-field
127
+
128
+DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

+ 23 - 0
django_commu/urls.py

@@ -0,0 +1,23 @@
1
+"""
2
+URL configuration for django_commu project.
3
+
4
+The `urlpatterns` list routes URLs to views. For more information please see:
5
+    https://docs.djangoproject.com/en/5.2/topics/http/urls/
6
+Examples:
7
+Function views
8
+    1. Add an import:  from my_app import views
9
+    2. Add a URL to urlpatterns:  path('', views.home, name='home')
10
+Class-based views
11
+    1. Add an import:  from other_app.views import Home
12
+    2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
13
+Including another URLconf
14
+    1. Import the include() function: from django.urls import include, path
15
+    2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
16
+"""
17
+from django.contrib import admin
18
+from django.urls import path, include
19
+
20
+urlpatterns = [
21
+    path('admin/', admin.site.urls),
22
+    path('core/', include('core.urls')),
23
+]

+ 16 - 0
django_commu/wsgi.py

@@ -0,0 +1,16 @@
1
+"""
2
+WSGI config for django_commu project.
3
+
4
+It exposes the WSGI callable as a module-level variable named ``application``.
5
+
6
+For more information on this file, see
7
+https://docs.djangoproject.com/en/5.2/howto/deployment/wsgi/
8
+"""
9
+
10
+import os
11
+
12
+from django.core.wsgi import get_wsgi_application
13
+
14
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'django_commu.settings')
15
+
16
+application = get_wsgi_application()

+ 40 - 0
docker-compose.yml

@@ -0,0 +1,40 @@
1
+version: '3.9'
2
+
3
+services:
4
+  db:
5
+    image: postgres:16
6
+    environment:
7
+      POSTGRES_DB: commudb
8
+      POSTGRES_USER: commuuser
9
+      POSTGRES_PASSWORD: commupass
10
+    ports:
11
+      - "5432:5432"
12
+    volumes:
13
+      - postgres_data:/var/lib/postgresql/data
14
+
15
+  web:
16
+    build:
17
+      context: .
18
+      args:
19
+        UID: ${UID}
20
+        GID: ${GID}
21
+    user: "${UID}:${GID}"
22
+    command: >
23
+      sh -c "python manage.py runserver 0.0.0.0:8000"
24
+    volumes:
25
+      - .:/app
26
+    working_dir: /app
27
+    ports:
28
+      - "8000:8000"
29
+    depends_on:
30
+      - db
31
+    environment:
32
+      - DEBUG=1
33
+      - DB_NAME=commudb
34
+      - DB_USER=commuuser
35
+      - DB_PASSWORD=commupass
36
+      - DB_HOST=db
37
+      - DB_PORT=5432
38
+
39
+volumes:
40
+  postgres_data:

+ 38 - 0
main.py

@@ -0,0 +1,38 @@
1
+from commu.infrastructure.memory_user_repository import InMemoryUserRepository
2
+from commu.infrastructure.memory_post_repository import InMemoryPostRepository
3
+from commu.usecases.user_service import UserService
4
+from commu.usecases.post_service import PostService
5
+from commu.entities.user import UserRole
6
+
7
+def main():
8
+    user_repo = InMemoryUserRepository()
9
+    post_repo = InMemoryPostRepository()
10
+    user_service = UserService(user_repo)
11
+    post_service = PostService(post_repo, user_repo)
12
+
13
+    # Create users
14
+    admin = user_service.register("alice", UserRole.ADMIN)
15
+    user = user_service.register("bob", UserRole.USER)
16
+    guest = user_service.register("guest", UserRole.GUEST)
17
+
18
+    # User creates post
19
+    post = post_service.create_post(user.id, "Hello world!", images=["img1.png"], videos=["vid1.mp4"])
20
+    print(f"Created Post: {post.text}, by {user.username}")
21
+
22
+    # Post search
23
+    found = post_service.search_posts("hello")
24
+    print(f"Found {len(found)} posts containing 'hello'.")
25
+
26
+    # Post rating
27
+    post_service.rate_post(post.id, admin.id, 5)
28
+    post_service.rate_post(post.id, user.id, 4)
29
+    print(f"Average Rating: {post.average_rating()}")
30
+
31
+    # Guest tries to create post (should fail)
32
+    try:
33
+        post_service.create_post(guest.id, "I am a guest")
34
+    except PermissionError as e:
35
+        print("Guest cannot create post:", e)
36
+
37
+if __name__ == "__main__":
38
+    main()

+ 22 - 0
manage.py

@@ -0,0 +1,22 @@
1
+#!/usr/bin/env python
2
+"""Django's command-line utility for administrative tasks."""
3
+import os
4
+import sys
5
+
6
+
7
+def main():
8
+    """Run administrative tasks."""
9
+    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'django_commu.settings')
10
+    try:
11
+        from django.core.management import execute_from_command_line
12
+    except ImportError as exc:
13
+        raise ImportError(
14
+            "Couldn't import Django. Are you sure it's installed and "
15
+            "available on your PYTHONPATH environment variable? Did you "
16
+            "forget to activate a virtual environment?"
17
+        ) from exc
18
+    execute_from_command_line(sys.argv)
19
+
20
+
21
+if __name__ == '__main__':
22
+    main()

+ 3 - 0
requirements.txt

@@ -0,0 +1,3 @@
1
+pytest
2
+Django>=4.2
3
+psycopg2-binary

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LICENSE 1.1KB

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  1. The MIT License (MIT)
  2. Copyright (c) 2014-2017, Jon Schlinkert.
  3. Permission is hereby granted, free of charge, to any person obtaining a copy
  4. of this software and associated documentation files (the "Software"), to deal
  5. in the Software without restriction, including without limitation the rights
  6. to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  7. copies of the Software, and to permit persons to whom the Software is
  8. furnished to do so, subject to the following conditions:
  9. The above copyright notice and this permission notice shall be included in
  10. all copies or substantial portions of the Software.
  11. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  12. IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  13. FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  14. AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  15. LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  16. OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  17. THE SOFTWARE.