Merge 0f9fadb into 6b793ee

authors/apps/articles/__init__.py

@@ -0,0 +1,4 @@
+"""
+set default app config
+"""
+default_app_config = 'authors.apps.articles.apps.ArticlesConfig'

authors/apps/articles/apps.py

@@ -2,4 +2,7 @@
 
 
 class ArticlesConfig(AppConfig):
-    name = 'articles'
+    name = 'authors.apps.articles'
+
+    def ready(self):
+        from authors.apps.usernotifications import handlers

authors/apps/authentication/migrations/0004_auto_20190129_2002.py

@@ -0,0 +1,23 @@
+# Generated by Django 2.1.5 on 2019-01-29 20:02
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('authentication', '0003_merge_20190121_1209'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='user',
+            name='app_notification_subscription',
+            field=models.BooleanField(default=True),
+        ),
+        migrations.AddField(
+            model_name='user',
+            name='email_notification_subscription',
+            field=models.BooleanField(default=True),
+        ),
+    ]

authors/apps/authentication/models.py

@@ -83,6 +83,10 @@ class User(AbstractBaseUser, PermissionsMixin):
 
     # More fields required by Django when specifying a custom user model.
 
+    # fields to specify if a user has subscribed to notifications
+    email_notification_subscription = models.BooleanField(default=True)
+    app_notification_subscription = models.BooleanField(default=True)
+
     # The `USERNAME_FIELD` property tells us which field we will use to log in.
     # In this case, we want that to be the email field.
     USERNAME_FIELD = 'email'

authors/apps/friends/__init__.py

@@ -0,0 +1,4 @@
+"""
+set default app config
+"""
+default_app_config = 'authors.apps.friends.apps.FriendsConfig'

authors/apps/friends/apps.py

@@ -2,4 +2,7 @@
 
 
 class FriendsConfig(AppConfig):
-    name = 'friends'
+    name = 'authors.apps.friends'
+
+    def ready(self):
+        from authors.apps.usernotifications import handlers

authors/apps/usernotifications/admin.py

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

authors/apps/usernotifications/apps.py

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

authors/apps/usernotifications/handlers.py

@@ -0,0 +1,95 @@
+from django.conf import settings
+from django.template.loader import render_to_string
+from django.db.models.signals import post_save
+from django.core.mail import send_mail
+from notifications.signals import notify
+from notifications.models import Notification
+from authors.apps.friends.models import Friend
+from authors.apps.authentication.models import User
+from authors.apps.articles.models import Article
+from . import verbs
+
+
+def follow_handler(sender, instance, created, **kwargs):
+    """
+    notification handler for friends
+    """
+    # get the user that has been followed
+    follower = instance.user_from
+    followed = instance.user_to
+    recipient = followed
+    if recipient.email_notification_subscription is False:
+        return
+    url = 'api/profiles/{}'.format(followed.username)
+    notify.send(
+        follower,
+        recipient=recipient,
+        description="{} followed you on {}".format(follower.username, instance.created_at.strftime('%d-%B-%Y %H:%M')),
+        verb=verbs.USER_FOLLOWING,
+        action_object=instance,
+        target=followed,
+        resource_url=url
+        )
+
+
+def article_handler(sender, instance, created, **kwargs):
+    """
+    notification handler for articles
+    """
+    article_author = instance.author
+    followers = Friend.objects.select_related(
+        'user_from').filter(user_to=article_author.id).all()
+    # add the author's followers to the recipients list
+    recipients = [User.objects.get(id=u.user_from_id) for u in followers]
+    # add only the subscribed followers to the recipients list
+    subsribed_users = [user for user in recipients if user.app_notification_subscription is True]
+    if not subsribed_users:
+        return
+    for user in subsribed_users:
+        url = "api/articles/"
+        notify.send(
+            article_author,
+            recipient=user,
+            description="{} posted an article on {}".format(
+                article_author.username,
+                instance.created.strftime('%d-%B-%Y %H:%M')),
+            verb=verbs.ARTICLE_CREATION,
+            action_object=instance,
+            resource_url=url
+            )
+
+
+def email_notification_handler(sender, instance, created, **kwargs):
+    """
+    notification handler for emails
+    """
+    user = instance.recipient
+    recipient = User.objects.get(email=user)
+    if recipient.email_notification_subscription is False:
+        return
+    description = instance.description
+    token = recipient.token
+    opt_out_link = '{}/api/notifications/unsubscribe/{}'.format(
+        settings.DOMAIN, token
+        )
+    try:
+        resource_url = instance.data['resource_url']
+    except TypeError:
+        resource_url = "api/articles/"
+    html_content = render_to_string('email_notification.html', context={
+        "opt_out_link": opt_out_link,
+        "username": recipient.username,
+        "description": description,
+        "resource_url": resource_url
+    })
+    send_mail(
+        "User Notification",
+        '',
+        'django_unchained@gmail.com',
+        [recipient.email],
+        html_message=html_content)
+
+
+post_save.connect(follow_handler, sender=Friend, weak=False)
+post_save.connect(article_handler, sender=Article, weak=False)
+post_save.connect(email_notification_handler, sender=Notification)

authors/apps/usernotifications/models.py

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

authors/apps/usernotifications/serializers.py

@@ -0,0 +1,56 @@
+from rest_framework import serializers
+
+from notifications.models import Notification
+
+from authors.apps.articles.models import Article
+from authors.apps.authentication.models import User
+
+
+class UnsubscribeSerializer(serializers.Serializer):
+    """
+    serializer class for unsubscribing from email notifications
+    """
+    class Meta:
+        fields = ('message', 'email', 'app')
+
+
+class ActorTargetField(serializers.RelatedField):
+    """
+    class to represent an actor/target
+    """
+    def to_representation(self, value):
+        actor_type = None
+        data = []
+        if isinstance(value, Article):
+            actor_type = "article"
+            data = value.slug
+
+        elif isinstance(value, User):
+            actor_type = "user"
+            data = value.username
+
+        return {"type": actor_type, "data": data}
+
+    def to_internal_value(self, data):
+        return Notification(data)
+
+
+class NotificationSerializer(serializers.ModelSerializer):
+    """
+    serializer class for notification objects
+    """
+    actor = ActorTargetField(read_only=True)
+    target = ActorTargetField(read_only=True)
+
+    class Meta:
+        model = Notification
+        fields = (
+            'id',
+            'actor',
+            'verb',
+            'target',
+            'level',
+            'unread',
+            'timestamp',
+            'description',
+            'emailed')

authors/apps/usernotifications/templates/email_notification.html

@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <title>Authors Haven Notifications</title>
+    <meta name="description" content="email notifications">
+    <meta name="keywords" content="keywords">
+</head>
+
+
+<body>
+    <div id="div-page" style="border: 2px solid #86C232;border-radius: 25px;width: 30em;padding: 25px;margin: 5em;text-align: justify; border-width: thick">
+
+        <h1 style="line-height: 35px;text-align: center; color: #86C232;">
+            Authors Haven Notifications
+        </h1>
+        <h1 style="line-height: 35px;text-align: center;">
+            Hello <span id="username" style="color: #23bebe;">{{username}}</span>
+        </h1>
+
+        <div id="div-content" style="line-height: 26px;">
+            <p style="text-align: center;">This is an auto generated notification.</p>
+            <p>{{description}}</p>
+            <p><a href={{resource_url}}><button>See Here</button></a></p>
+            <p>To opt out of these notifications, click below</p>
+            <p></p><a href={{opt_out_link}}>Unsubscribe</a></p>
+            <p style="text-align: center;">Thank you for being an active user.</p>
+
+        </div>
+    </div>
+
+
+</body>
+
+</html>