first commit

.gitignore

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+.env
+*.pyc
+venv/*

manage.py

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+#!/usr/bin/env python
+import os
+import sys
+
+if __name__ == "__main__":
+    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "settings")
+    try:
+        from django.core.management import execute_from_command_line
+    except ImportError:
+        # The above import may fail for some other reason. Ensure that the
+        # issue is really that Django is missing to avoid masking other
+        # exceptions on Python 2.
+        try:
+            import django
+        except ImportError:
+            raise ImportError(
+                "Couldn't import Django. Are you sure it's installed and "
+                "available on your PYTHONPATH environment variable? Did you "
+                "forget to activate a virtual environment?"
+            )
+        raise
+    execute_from_command_line(sys.argv)

requirements.txt

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+Django==1.11.13
+djangorestframework==3.8.2
+django-mysql==2.4.0
+uwsgi==2.0.15
+django-filter==1.0.4
+django-suit==0.2.25
+mysqlclient==1.3.13
+django-cors-headers==2.4.0

saas/admin.py

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+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.contrib import admin
+from .models import *
+
+admin.site.register(Business)
+admin.site.register(Plan)
+admin.site.register(Subscription)
+admin.site.register(BusinessTeamMember)

saas/migrations/0001_initial.py

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+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.13 on 2019-03-20 09:16
+from __future__ import unicode_literals
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Business',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=255)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('last_updated_on', models.DateTimeField(auto_now=True)),
+                ('is_active', models.BooleanField(default=True)),
+                ('api_key', models.CharField(max_length=50, null=True)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='BusinessTeamMember',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('activation_key', models.CharField(max_length=36)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('last_updated_on', models.DateTimeField(auto_now=True)),
+                ('business', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='saas.Business')),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Plan',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=255)),
+                ('description', models.CharField(blank=True, max_length=255, null=True)),
+                ('usd_price', models.DecimalField(decimal_places=2, max_digits=6)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('last_updated_on', models.DateTimeField(auto_now=True)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Subscription',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('is_active', models.BooleanField(default=False)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('last_updated_on', models.DateTimeField(auto_now=True)),
+                ('business', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='saas.Business')),
+                ('plan', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='saas.Plan')),
+            ],
+        ),
+        migrations.AlterUniqueTogether(
+            name='businessteammember',
+            unique_together=set([('business', 'user')]),
+        ),
+    ]

saas/models.py

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+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models
+from django.contrib.auth.models import User
+
+# below models can be extended according to the specific saas uses cases. This is boiler plate only
+
+class Plan(models.Model):
+	name              = models.CharField(max_length=255)
+	description       = models.CharField(max_length=255, null=True, blank=True)
+	usd_price         = models.DecimalField(max_digits=6, decimal_places=2)
+	created_at        = models.DateTimeField(auto_now_add=True)
+	last_updated_on   = models.DateTimeField(auto_now=True)
+
+	def __unicode__(self):
+		return self.name
+
+class Business(models.Model):
+	name                     = models.CharField(max_length=255)
+	created_at               = models.DateTimeField(auto_now_add=True)
+	last_updated_on          = models.DateTimeField(auto_now=True)
+	is_active                = models.BooleanField(default=True)
+	api_key                  = models.CharField(max_length=50, null=True)
+
+	def __unicode__(self):
+		return "{}_{}".format(self.id, self.name)
+
+
+class Subscription(models.Model):
+	business                 = models.ForeignKey(Business)
+	plan                     = models.ForeignKey(Plan)
+	is_active                = models.BooleanField(default=False)
+	created_at               = models.DateTimeField(auto_now_add=True)
+	last_updated_on          = models.DateTimeField(auto_now=True)
+
+	def __unicode__(self):
+		return self.business.__unicode__() + "_" + str(self.id)
+
+class BusinessTeamMember(models.Model):
+	business            = models.ForeignKey(Business)
+	user                = models.ForeignKey(User)
+	activation_key      = models.CharField(max_length=36)
+	created_at          = models.DateTimeField(auto_now_add=True)
+	last_updated_on     = models.DateTimeField(auto_now=True)
+
+	class Meta:
+		unique_together = ('business', 'user',)
+
+	def __unicode__(self):
+		return "{}_{}".format(self.business.id, self.user.username)

saas/urls.py

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+"""saas URL Configuration
+
+The `urlpatterns` list routes URLs to views. For more information please see:
+	https://docs.djangoproject.com/en/1.11/topics/http/urls/
+Examples:
+Function views
+	1. Add an import:  from my_app import views
+	2. Add a URL to urlpatterns:  url(r'^$', views.home, name='home')
+Class-based views
+	1. Add an import:  from other_app.views import Home
+	2. Add a URL to urlpatterns:  url(r'^$', Home.as_view(), name='home')
+Including another URLconf
+	1. Import the include() function: from django.conf.urls import url, include
+	2. Add a URL to urlpatterns:  url(r'^blog/', include('blog.urls'))
+"""
+from django.conf.urls import url
+from django.contrib import admin
+from django.conf.urls import url, include
+
+urlpatterns = [
+	url(r'^', include('django.contrib.auth.urls')),
+	url(r'^admin/', admin.site.urls),
+]

saas/views.py

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+from rest_framework.views import APIView
+from rest_framework.generics import CreateAPIView
+from .serializers import LoginSerializer, BusinessTeamMemberSerializer, ResetPasswordSerializer \
+                         SignupSerializer, ResetPasswordSerializer, ResetPasswordConfirmationSerializer \
+                         InviteTeamMemberSerialiser
+from .permissions import IsBusiness
+
+class BusinessAPIView(APIView):
+    """
+    This view must by inherited by any view that should be accessed only
+    if the user making the request is part of a business that is registered
+    """
+
+	def initial(self, request, *args, **kwargs):
+		ret = super(BusinessAPIView, self).initial(request, *args, **kwargs)
+		if not request.user.is_anonymous():
+			try:
+				team_member = BusinessTeamMember.objects.get(user=request.user)
+				request.business = team_member.business
+			except BusinessTeamMember.DoesNotExist:
+				raise MemberDoesNotExist()
+		return ret
+
+
+class SubscriptionAPIView(BusinessAPIView):
+    """
+    This view must be inherited by any view that should be accessed only if
+    there is an active subscription present for a business to which
+    the user that is making the api call belongs to
+    """
+	def initial(self, request, *args, **kwargs):
+		ret = super(SubscriptionAPIView, self).initial(request, *args, **kwargs)
+		try:
+			subscription = Subscription.objects.get(business=request.business, is_active=True)
+			request.subscription = subscription
+		except Subscription.DoesNotExist:
+			raise NoActiveSubscriptionFound()
+		return ret
+
+
+class LoginView(CreateAPIView):
+	serializer_class = LoginSerializer
+	parser_classes = (parsers.FormParser, parsers.MultiPartParser, parsers.JSONParser,)
+
+
+class PrefillSignupView(RetrieveAPIView):
+	"""
+	If signup form is accessed via an activation link, form will be prefilled with some information.
+	To retrieve that information, use this API with the activation key
+	"""
+	serializer_class = BusinessTeamMemberSerializer
+
+	def get_object(self):
+		key = self.request.query_params.get('key', None)
+		try:
+			return BusinessTeamMember.objects.get(activation_key=key)
+		except BusinessTeamMember.DoesNotExist:
+			raise serializers.ValidationError('Activation key not found')
+
+class SignupView(generics.CreateAPIView):
+	serializer_class = SignupSerializer
+	parser_classes = (parsers.FormParser, parsers.MultiPartParser, parsers.JSONParser,)
+
+
+class ResetPasswordView(generics.CreateAPIView):
+	"""
+	Sending email to a team member with an activation key that will be used to reset password
+	"""
+
+	serializer_class = ResetPasswordSerializer
+	parser_classes = (parsers.FormParser, parsers.MultiPartParser, parsers.JSONParser,)
+
+
+class ResetPasswordConfirmationView(generics.CreateAPIView):
+	"""
+	Using the activation key sent in the mail, password will be reset using new password
+	"""
+
+	serializer_class = ResetPasswordConfirmationSerializer
+	parser_classes = (parsers.FormParser, parsers.MultiPartParser, parsers.JSONParser,)
+
+class MeView(generics.RetrieveAPIView, BusinessAPIView):
+	"""
+	Returns information about the user to which this auth token belongs to and the corresponding business.
+	Can be used in settings
+	"""
+
+	serializer_class = BusinessTeamMemberSerializer
+	permission_classes = [IsBusiness]
+
+	def get_object(self):
+		return BusinessTeamMember.objects.get(user=self.request.user, business=self.request.business)
+
+class InviteTeamMemberView(generics.CreateAPIView, SubscriptionAPIView):
+	"""
+	Sending invitation to a team member to join SessionFox
+	"""
+
+	permission_classes = [IsBusiness]
+	serializer_class   = InviteTeamMemberSerialiser