added notifications, web provider and email provider

akarpov/common/channels.py

@@ -1,20 +1,46 @@
+from importlib import import_module
+
 from channels.db import database_sync_to_async
 from channels.generic.websocket import AsyncJsonWebsocketConsumer, JsonWebsocketConsumer
+from django.conf import settings
+from django.contrib.sessions.models import Session
 
 from akarpov.common.jwt import read_jwt
+from akarpov.users.models import User
+
+engine = import_module(settings.SESSION_ENGINE)
+sessionstore = engine.SessionStore
 
 
 @database_sync_to_async
 def get_user(headers):
     # WARNING headers type is bytes
-    if b"authorization" not in headers or not headers[b"authorization"]:
+    if (b"authorization" not in headers or not headers[b"authorization"]) and (
-        return False
+        b"cookie" not in headers or not headers[b"cookie"]
-
+    ):
+        return None
+    if b"authorization" in headers:
         jwt = headers[b"authorization"].decode()
-    payload = read_jwt(jwt)
+        data = read_jwt(jwt)
+        if not data:
+            return None
+        payload = data
+    elif b"cookie" in headers:
+        cookies = dict([x.split("=") for x in headers[b"cookie"].decode().split("; ")])
+        if "sessionid" not in cookies:
+            return None
+        try:
+            session = sessionstore(cookies["sessionid"])
+            user_id = session["_auth_user_id"]
+        except (Session.DoesNotExist, User.DoesNotExist, KeyError):
+            return None
+
+        payload = {"id": user_id}
+    else:
+        payload = {}
 
     if not payload or "id" not in payload:
-        return False
+        return None
 
     return payload["id"]
 
@@ -27,7 +53,7 @@ def __init__(self, app):
         self.app = app
 
     async def __call__(self, scope, receive, send):
-        scope["user"] = await get_user(dict(scope["headers"]))
+        scope["user_id"] = await get_user(dict(scope["headers"]))
         try:
             return await self.app(scope, receive, send)
         except ValueError:

akarpov/common/jwt.py

@@ -3,7 +3,7 @@
 import jwt
 import pytz
 from django.conf import settings
-from jwt import ExpiredSignatureError, InvalidSignatureError
+from jwt import DecodeError, ExpiredSignatureError, InvalidSignatureError
 
 TIMEZONE = pytz.timezone("Europe/Moscow")
 
@@ -24,7 +24,10 @@ def sign_jwt(data: dict, t_life: None | int = None) -> str:
 
 def read_jwt(token: str) -> dict | bool:
     """reads jwt, validates it and return payload if correct"""
+    try:
         header_data = jwt.get_unverified_header(token)
+    except DecodeError:
+        return False
     secret = settings.SECRET_KEY
     try:
         payload = jwt.decode(token, key=secret, algorithms=[header_data["alg"]])

akarpov/notifications/admin.py

@@ -0,0 +1,8 @@
+from django.contrib import admin
+
+from akarpov.notifications.models import Notification
+
+
+@admin.register(Notification)
+class NotificationAdmin(admin.ModelAdmin):
+    list_filter = ["provider"]

akarpov/notifications/apps.py

@@ -0,0 +1,12 @@
+from django.apps import AppConfig
+
+
+class NotificationsConfig(AppConfig):
+    name = "akarpov.notifications"
+    verbose_name = "Notifications"
+
+    def ready(self):
+        try:
+            import akarpov.notifications.signals  # noqa F401
+        except ImportError:
+            pass

akarpov/notifications/migrations/0001_initial.py

@@ -0,0 +1,56 @@
+# Generated by Django 4.2.5 on 2023-09-20 10:52
+
+from django.db import migrations, models
+import django_extensions.db.fields
+
+
+class Migration(migrations.Migration):
+    initial = True
+
+    dependencies = []
+
+    operations = [
+        migrations.CreateModel(
+            name="Notification",
+            fields=[
+                (
+                    "id",
+                    models.BigAutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                (
+                    "created",
+                    django_extensions.db.fields.CreationDateTimeField(
+                        auto_now_add=True, verbose_name="created"
+                    ),
+                ),
+                (
+                    "modified",
+                    django_extensions.db.fields.ModificationDateTimeField(
+                        auto_now=True, verbose_name="modified"
+                    ),
+                ),
+                ("title", models.CharField(max_length=255)),
+                ("body", models.TextField(blank=True, max_length=5000, null=True)),
+                (
+                    "provider",
+                    models.CharField(
+                        choices=[
+                            ("akarpov.notifications.providers.site", "site"),
+                            ("akarpov.notifications.providers.email", "email"),
+                        ]
+                    ),
+                ),
+                ("meta", models.JSONField(null=True)),
+                ("delivered", models.BooleanField(default=False)),
+            ],
+            options={
+                "get_latest_by": "modified",
+                "abstract": False,
+            },
+        ),
+    ]

akarpov/notifications/models.py

@@ -0,0 +1,17 @@
+from django.db import models
+from django_extensions.db.models import TimeStampedModel
+
+
+class Notification(TimeStampedModel):
+    class NotificationProviders(models.TextChoices):
+        site = "akarpov.notifications.providers.site", "site"
+        email = "akarpov.notifications.providers.email", "email"
+
+    title = models.CharField(max_length=255)
+    body = models.TextField(max_length=5000, null=True, blank=True)
+    provider = models.CharField(choices=NotificationProviders.choices)
+    meta = models.JSONField(null=True)
+    delivered = models.BooleanField(default=False)
+
+    def __str__(self):
+        return self.title

akarpov/notifications/providers/email/__init__.py

@@ -0,0 +1 @@
+from .send import send_notification  # noqa

akarpov/notifications/providers/email/send.py

@@ -0,0 +1,34 @@
+from django.conf import settings
+from django.core.mail import send_mail
+from django.template.loader import render_to_string
+
+from akarpov.notifications.models import Notification
+from akarpov.users.models import User
+
+
+def send_notification(notification: Notification) -> bool:
+    if not notification.meta or all(
+        ["email" not in notification.meta, "user_id" not in notification.meta]
+    ):
+        raise KeyError(
+            f"can't send notification {notification.id}, email/user_id is not found"
+        )
+    if "email" in notification.meta:
+        email = notification.meta["email"]
+        username = ""
+    else:
+        user = User.objects.get(id=notification.meta["user_id"])
+        email = user.email
+        username = user.username
+    message = render_to_string(
+        "email/notification.html", {"username": username, "body": notification.body}
+    )
+    send_mail(
+        notification.title,
+        notification.body,
+        settings.EMAIL_FROM,
+        [email],
+        fail_silently=False,
+        html_message=message,
+    )
+    return True

akarpov/notifications/providers/site/__init__.py

@@ -0,0 +1,8 @@
+"""
+Notifications site provider
+meta params:
+    - user_id: bool, required
+    - conformation: bool, optional
+"""
+
+from .send import send_notification  # noqa

akarpov/notifications/providers/site/api/serializers.py

@@ -0,0 +1,9 @@
+from rest_framework import serializers
+
+from akarpov.notifications.models import Notification
+
+
+class SiteNotificationSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Notification
+        fields = ["title", "body", "created", "delivered"]

akarpov/notifications/providers/site/api/views.py

@@ -0,0 +1,19 @@
+from rest_framework import generics, permissions
+
+from akarpov.common.api import StandardResultsSetPagination
+from akarpov.notifications.models import Notification
+from akarpov.notifications.providers.site.api.serializers import (
+    SiteNotificationSerializer,
+)
+
+
+class ListNotificationsAPIView(generics.ListAPIView):
+    permission_classes = [permissions.IsAuthenticated]
+    serializer_class = SiteNotificationSerializer
+    pagination_class = StandardResultsSetPagination
+
+    def get_queryset(self):
+        return Notification.objects.filter(meta__user_id=self.request.user.id)
+
+
+# TODO: add read notification url here

akarpov/notifications/providers/site/consumers.py

@@ -0,0 +1,28 @@
+from akarpov.common.channels import BaseConsumer
+
+
+class NotificationsConsumer(BaseConsumer):
+    def __init__(self, *args, **kwargs):
+        super().__init__(args, kwargs)
+        self.room_group_name = None
+
+    async def connect(self):
+        self.room_group_name = f"notifications_{self.scope['user_id']}"
+
+        await self.accept()
+        await self.channel_layer.group_add(self.room_group_name, self.channel_name)
+        if not self.scope["user_id"]:
+            await self.send_error("Authorization is required")
+            await self.disconnect(close_code=None)
+            return
+
+    async def disconnect(self, close_code):
+        await self.channel_layer.group_discard(self.room_group_name, self.channel_name)
+        await self.close()
+
+    async def receive_json(self, content: dict, **kwargs):
+        return content
+
+    async def notification(self, event):
+        data = event["data"]
+        await self.send_json(data)

akarpov/notifications/providers/site/send.py

@@ -0,0 +1,30 @@
+from asgiref.sync import async_to_sync
+from channels.layers import get_channel_layer
+
+from akarpov.notifications.models import Notification
+from akarpov.notifications.providers.site.api.serializers import (
+    SiteNotificationSerializer,
+)
+
+
+def send_notification(notification: Notification) -> bool:
+    if (
+        not notification.meta
+        or "user_id" not in notification.meta
+        or not notification.meta["user_id"]
+    ):
+        raise KeyError(
+            f"can't send notification {notification.id}, user_id is not found"
+        )
+    channel_layer = get_channel_layer()
+    async_to_sync(channel_layer.group_send)(
+        f"notifications_{notification.meta['user_id']}",
+        {
+            "type": "notification",
+            "data": SiteNotificationSerializer().to_representation(notification),
+        },
+    )
+    if "conformation" in notification.meta and notification.meta["conformation"]:
+        # no view conformation required, only pop up on site
+        return False
+    return True

akarpov/notifications/providers/site/urls.py

@@ -0,0 +1,8 @@
+from django.urls import path
+
+from akarpov.notifications.providers.site.api.views import ListNotificationsAPIView
+
+app_name = "notifications:site"
+urlpatterns = [
+    path("", ListNotificationsAPIView.as_view(), name="list"),
+]

akarpov/notifications/providers/urls.py

@@ -0,0 +1,8 @@
+from django.urls import include, path
+
+app_name = "notifications"
+urlpatterns = [
+    path(
+        "site/", include("akarpov.notifications.providers.site.urls", namespace="site")
+    ),
+]

akarpov/notifications/services.py

@@ -0,0 +1,7 @@
+from akarpov.notifications.tasks import run_create_send_notification
+
+
+def send_notification(title: str, body: str, provider: str, **kwargs):
+    run_create_send_notification.apply_async(
+        kwargs={"title": title, "body": body, "provider": provider} | kwargs
+    )

akarpov/notifications/signals.py

@@ -0,0 +1,11 @@
+from django.db.models.signals import post_save
+from django.dispatch import receiver
+
+from akarpov.notifications.models import Notification
+from akarpov.notifications.tasks import run_send_notification
+
+
+@receiver(post_save, sender=Notification)
+def notification_create(sender, instance: Notification, created, **kwargs):
+    if created:
+        run_send_notification.apply_async(kwargs={"pk": instance.pk}, countdown=2)

akarpov/notifications/tasks.py

@@ -0,0 +1,32 @@
+from importlib import import_module
+
+from celery import shared_task
+
+from akarpov.notifications.models import Notification
+
+providers = {x[1]: x[0] for x in Notification.NotificationProviders.choices}
+
+
+@shared_task
+def run_send_notification(pk):
+    instance = Notification.objects.get(pk=pk)
+    provider = import_module(instance.provider)
+    instance.delivered = provider.send_notification(instance)
+    instance.save()
+
+
+@shared_task
+def run_create_send_notification(title: str, body: str, provider: str, **kwargs):
+    if provider != "*" and provider not in providers:
+        raise ValueError(f"no such provider: {provider}")
+    if provider == "*":
+        for provider in providers:
+            Notification.objects.create(
+                title=title, body=body, provider=providers[provider], meta=kwargs
+            )
+    else:
+        Notification.objects.create(
+            title=title, body=body, provider=providers[provider], meta=kwargs
+        )
+
+    return

akarpov/templates/email/notification.html

@@ -0,0 +1,6 @@
+<h3>Hello, {% if username %}{{ username }}{% endif %}!</h3>
+<p>You are seeing this message, because you received notification from <a href="https://akarpov.ru">akarpov.ru</a></p>
+
+<p>{{ body }}</p>
+
+<p>If you don't want to receive notifications via email, or got it by excitement <a href="{# TODO: add unsubscribe #}">press here</a></p>

akarpov/users/api/views.py

@@ -1,8 +1,10 @@
+from drf_spectacular.types import OpenApiTypes
 from drf_spectacular.utils import extend_schema
 from rest_framework import generics, permissions, status, views
 from rest_framework.response import Response
 
 from akarpov.common.api import SmallResultsSetPagination
+from akarpov.common.jwt import sign_jwt
 from akarpov.users.api.serializers import (
     UserEmailVerification,
     UserFullPublicInfoSerializer,
@@ -27,6 +29,14 @@ def post(self, request, *args, **kwargs):
         return self.create(request, *args, **kwargs)
 
 
+class GenerateUserJWTTokenAPIView(generics.GenericAPIView):
+    permission_classes = [permissions.IsAuthenticated]
+
+    @extend_schema(responses={200: OpenApiTypes.STR})
+    def get(self, request, *args, **kwargs):
+        return Response(data=sign_jwt(data={"id": self.request.user.id}))
+
+
 class UserEmailValidationAPIViewSet(views.APIView):
     """Receives token from email and activates user"""
 

compose/production/django/Dockerfile

@@ -26,6 +26,7 @@ ARG APP_HOME=/app
 ENV PYTHONUNBUFFERED 1
 ENV PYTHONDONTWRITEBYTECODE 1
 ENV BUILD_ENV ${BUILD_ENVIRONMENT}
+ENV POETRY_VERSION 1.4.2
 
 WORKDIR ${APP_HOME}
 
@@ -34,14 +35,12 @@ RUN addgroup --system django \
 
 
 # Install required system dependencies
-RUN apt-get update && apt-get install --no-install-recommends -y \
+RUN apt-get update && \
-  # psycopg2 dependencies
+    apt-get install -y build-essential libpq-dev gettext libmagic-dev libjpeg-dev zlib1g-dev && \
-  libpq-dev \
+    # Dependencies for file preview generation
-  # Translations dependencies
+    apt-get install -y webp libimage-exiftool-perl libmagickwand-dev ffmpeg libgdal-dev && \
-  gettext \
+    apt-get purge -y --auto-remove -o APT:AutoRemove:RecommendsImportant=false && \
-  # cleaning up unused files
+    rm -rf /var/lib/apt/lists/*
-  && apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false \
-  && rm -rf /var/lib/apt/lists/*
 
 
 RUN pip install "poetry==$POETRY_VERSION"

compose/production/traefik/traefik.yml

@@ -63,6 +63,11 @@ http:
         servers:
           - url: http://django:5000
 
+    redirect:
+      loadBalancer:
+        servers:
+          - url: http://redirect:3000
+
     flower:
       loadBalancer:
         servers:

config/api_router.py

@@ -1,7 +1,7 @@
 from django.urls import include, path
 from rest_framework.authtoken.views import obtain_auth_token
 
-from akarpov.users.api.views import UserRegisterAPIViewSet
+from akarpov.users.api.views import GenerateUserJWTTokenAPIView, UserRegisterAPIViewSet
 
 app_name = "api"
 
@@ -16,6 +16,7 @@
                     name="user_register_api",
                 ),
                 path("token/", obtain_auth_token),
+                path("jwt/", GenerateUserJWTTokenAPIView.as_view()),
             ]
         ),
     ),
@@ -23,6 +24,10 @@
         "users/",
         include("akarpov.users.api.urls", namespace="users"),
     ),
+    path(
+        "notifications/",
+        include("akarpov.notifications.providers.urls", namespace="notifications"),
+    ),
     path(
         "blog/",
         include("akarpov.blog.api.urls", namespace="blog"),

config/routing.py

@@ -1,7 +1,9 @@
 from django.urls import re_path
 
 from akarpov.music.consumers import RadioConsumer
+from akarpov.notifications.providers.site.consumers import NotificationsConsumer
 
 websocket_urlpatterns = [
     re_path(r"ws/radio/", RadioConsumer.as_asgi()),
+    re_path(r"ws/notifications/", NotificationsConsumer.as_asgi()),
 ]

config/settings/base.py

@@ -155,10 +155,11 @@
     "akarpov.files",
     "akarpov.music",
     "akarpov.gallery",
+    "akarpov.tools.qr",
     "akarpov.pipeliner",
+    "akarpov.notifications",
     "akarpov.test_platform",
     "akarpov.tools.shortener",
-    "akarpov.tools.qr",
     "akarpov.tools.promocodes",
 ]
 # https://docs.djangoproject.com/en/dev/ref/settings/#installed-apps

config/settings/local.py

@@ -10,6 +10,7 @@
     "DJANGO_SECRET_KEY",
     default="Lm4alUqtub6qQT4MnV4NmtXQP02RCBtmGj1bJhyDho07Bkjk9WFZxGtwpnLNQGJQ",
 )
+TOKEN_EXP = 24 * 60 * 60
 # https://docs.djangoproject.com/en/dev/ref/settings/#allowed-hosts
 ALLOWED_HOSTS = ["*"]
 CSRF_TRUSTED_ORIGINS = ["http://127.0.0.1", "https://*.akarpov.ru"]
@@ -20,6 +21,7 @@
 EMAIL_HOST = env("EMAIL_HOST", default="mailhog")
 # https://docs.djangoproject.com/en/dev/ref/settings/#email-port
 EMAIL_PORT = env("EMAIL_PORT", default="1025")
+EMAIL_FROM = env("EMAIL_FROM", default="noreply@akarpov.ru")
 
 # WhiteNoise
 # ------------------------------------------------------------------------------

production.yml

@@ -24,7 +24,6 @@ services:
       - ./.envs/.production/.postgres
     command: /start
 
-
   redirect:
     build:
       context: .
@@ -35,16 +34,30 @@ services:
     depends_on:
       - postgres
       - redis
-      - mailhog
     volumes:
-      - .:/app:z
+      - type: bind
+        source: /var/www/media/
+        target: /app/akarpov/media/
     env_file:
       - ./.envs/.production/.django
       - ./.envs/.production/.postgres
-    ports:
-      - "3000:3000"
     command: /start-redirect
 
+  traefik:
+    build:
+      context: .
+      dockerfile: ./compose/production/traefik/Dockerfile
+    image: akarpov_production_traefik
+    depends_on:
+      - django
+      - redirect
+    volumes:
+      - production_traefik:/etc/traefik/acme
+    ports:
+      - "0.0.0.0:80:80"
+      - "0.0.0.0:443:443"
+      - "0.0.0.0:3000:3000"
+      - "0.0.0.0:5555:5555"
 
   postgres:
     build: