Allow account registration with invites.

fedireads/forms.py

@@ -1,5 +1,5 @@
 ''' usin django model forms '''
-from django.forms import ModelForm, PasswordInput
+from django.forms import ModelForm, PasswordInput, HiddenInput
 from django import forms
 
 from fedireads import models
@@ -21,7 +21,7 @@ class RegisterForm(ModelForm):
         fields = ['username', 'email', 'password']
         help_texts = {f: None for f in fields}
         widgets = {
-            'password': PasswordInput(),
+            'password': PasswordInput()
         }
 
 

fedireads/migrations/0043_siteinvite.py

@@ -0,0 +1,24 @@
+# Generated by Django 3.0.3 on 2020-06-01 21:31
+
+from django.db import migrations, models
+import fedireads.models.site
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('fedireads', '0042_sitesettings'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='SiteInvite',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('code', models.CharField(default=fedireads.models.site.new_invite_code, max_length=32)),
+                ('expiry', models.DateTimeField(blank=True, null=True)),
+                ('use_limit', models.IntegerField(blank=True, null=True)),
+                ('times_used', models.IntegerField(default=0)),
+            ],
+        ),
+    ]

fedireads/models/__init__.py

@@ -6,4 +6,4 @@ from .status import Favorite, Boost, Tag, Notification, ReadThrough
 from .user import User, UserFollows, UserFollowRequest, UserBlocks
 from .user import FederatedServer
 from .import_job import ImportJob, ImportItem
-from .site import SiteSettings
+from .site import SiteSettings, SiteInvite

fedireads/models/site.py

@@ -1,4 +1,9 @@
+import base64
+import datetime
+
+from Crypto import Random
 from django.db import models
+
 from fedireads.settings import DOMAIN
 
 class SiteSettings(models.Model):
@@ -17,3 +22,17 @@ class SiteSettings(models.Model):
             default_settings = SiteSettings(id=1)
             default_settings.save()
             return default_settings
+
+def new_invite_code():
+    return base64.b32encode(Random.get_random_bytes(5)).decode('ascii')
+
+class SiteInvite(models.Model):
+    code = models.CharField(max_length=32, default=new_invite_code)
+    expiry = models.DateTimeField(blank=True, null=True)
+    use_limit = models.IntegerField(blank=True, null=True)
+    times_used = models.IntegerField(default=0)
+
+    def valid(self):
+        return (
+            (self.expiry is None or self.expiry > datetime.datetime.now()) and
+            (self.use_limit is None or self.times_used < self.use_limit))

fedireads/templates/invite.html

@@ -0,0 +1,33 @@
+{% extends 'layout.html' %}
+{% block content %}
+
+<div class="content-container">
+    <h2>About {{ site_settings.name }}</h2>
+    <p>
+    {{ site_settings.instance_description }}
+    </p>
+
+    <p>
+    <small>
+        <a href="/about/">More about this site</a>
+    </small>
+    </p>
+</div>
+
+<div class="content-container login">
+    <h2>Create an Account</h2>
+    <p><small>
+        With a BookWyrm account, you can track and share your reading activity with
+        friends here and on any other federated server, like Mastodon and PixelFed.
+    </small></p>
+
+    <div>
+        <form name="register" method="post" action="/register">
+            {% csrf_token %}
+            {{ register_form.as_p }}
+            <input type=hidden name="invite_code" value="{{ invite.code }}">
+            <button type="submit">Create account</button>
+        </form>
+    </div>
+</div>
+{% endblock %}

fedireads/urls.py

@@ -35,6 +35,7 @@ urlpatterns = [
     # ui views
     re_path(r'^login/?$', views.login_page),
     re_path(r'^about/?$', views.about_page),
+    re_path(r'^invite/(?P<code>[A-Za-z0-9]+)/?$', views.invite_page),
 
     path('', views.home),
     re_path(r'^(?P<tab>home|local|federated)/?$', views.home_tab),

fedireads/view_actions.py

@@ -51,7 +51,17 @@ def register(request):
         return redirect('/login')
 
     if not models.SiteSettings.get().allow_registration:
-        raise PermissionDenied
+        invite_code = request.POST.get('invite_code')
+
+        if not invite_code:
+            raise PermissionDenied
+
+        try:
+            invite = models.SiteInvite.objects.get(code=invite_code)
+        except models.SiteInvite.DoesNotExist:
+            raise PermissionDenied
+    else:
+        invite = None
 
     form = forms.RegisterForm(request.POST)
     if not form.is_valid():
@@ -62,6 +72,10 @@ def register(request):
     password = form.data['password']
 
     user = models.User.objects.create_user(username, email, password)
+    if invite:
+        invite.times_used += 1
+        invite.save()
+
     login(request, user)
     return redirect('/')
 

fedireads/views.py

@@ -222,6 +222,22 @@ def about_page(request):
     }
     return TemplateResponse(request, 'about.html', data)
 
+def invite_page(request, code):
+    ''' Handle invites. '''
+    try:
+        invite = models.SiteInvite.objects.get(code=code)
+        if not invite.valid():
+            raise PermissionDenied
+    except models.SiteInvite.DoesNotExist:
+        raise PermissionDenied
+
+    data = {
+        'site_settings': models.SiteSettings.get(),
+        'register_form': forms.RegisterForm(),
+        'invite': invite,
+    }
+    return TemplateResponse(request, 'invite.html', data)
+
 
 @login_required
 def notifications_page(request):