Files
goodtimes/manage_subscriptions/views.py
2024-08-02 18:01:53 +05:30

801 lines
30 KiB
Python

from decimal import Decimal
import json
from django.http import HttpResponseBadRequest, JsonResponse
from django.shortcuts import get_object_or_404, redirect, render
import stripe
from accounts import resource_action
from accounts.models import IAmPrincipal
from django.contrib.auth import login
import jwt
from django.utils import timezone
from django.contrib.auth import get_user_model
from manage_coupons.models import Coupon
from manage_subscriptions.forms import (
StripeProductForm,
SubscriptionForm,
PrincipalSubscriptionForm,
)
from manage_wallets.models import (
PaymentMethod,
Transaction,
TransactionStatus,
TransactionType,
)
from .models import Plan, StripeProduct, Subscription, PrincipalSubscription
from django.views import generic
from django.contrib.auth.mixins import LoginRequiredMixin
from django.urls import reverse_lazy
from django.contrib import messages
from goodtimes import constants
from django.views.decorators.csrf import csrf_exempt
from django.views.decorators.http import require_POST
from django.conf import settings
from django.views.generic.base import TemplateView
from django.db.models import Q
# Create your views here.
class SubscriptionCreateOrUpdateView(LoginRequiredMixin, generic.View):
# Set the page_name and resource
page_name = resource_action.RESOURCE_MANAGE_SUBSCRIPTIONS
resource = resource_action.RESOURCE_MANAGE_SUBSCRIPTIONS
# Initialize the action as ACTION_CREATE (can change based on logic)
action = resource_action.ACTION_CREATE # Default action
template_name = "manage_subscriptions/subscription_add.html"
model = Subscription
form_class = SubscriptionForm
success_url = reverse_lazy("manage_subscriptions:subscription_list")
error_message = "An error occurred while saving the data."
# Determine the success message dynamically based on whether it's an update or create
def get_success_message(self):
self.success_message = (
constants.RECORD_CREATED if not self.object else constants.RECORD_UPDATED
)
return self.success_message
# Get the object (if exists) based on URL parameter 'pk'
def get_object(self):
pk = self.kwargs.get("pk")
return get_object_or_404(self.model, pk=pk) if pk else None
# Add page_name and operation to the context
def get_context_data(self, **kwargs):
context = {
"page_name": self.page_name,
"operation": "Add" if not self.object else "Edit",
}
context.update(kwargs) # Include any additional context data passed to the view
return context
def get(self, request, *args, **kwargs):
self.object = self.get_object()
# If an object is found, change action to ACTION_UPDATE
if self.object is not None:
self.action = resource_action.ACTION_UPDATE
form = self.form_class(instance=self.object)
context = self.get_context_data(form=form)
return render(request, self.template_name, context=context)
def post(self, request, *args, **kwargs):
self.object = self.get_object()
# If an object is found, change action to ACTION_UPDATE
if self.object is not None:
self.action = resource_action.ACTION_UPDATE
form = self.form_class(request.POST, instance=self.object)
if not form.is_valid():
print(form.errors)
context = self.get_context_data(form=form)
return render(request, self.template_name, context=context)
# This code ensures that only one free plan can be created by checking for existing free plans before saving a new one.
if form.cleaned_data.get("is_free"):
if self.model.objects.filter(Q(is_free=True) & Q(active=True)).exists():
messages.error(
self.request,
"A free plan is already available. Please deactivate the existing one before creating a new one.",
)
context = self.get_context_data(form=form)
return render(request, self.template_name, context=context)
# Processing Stripe price creation and handling free subscription
success, message = self.handle_stripe_price(form)
if not success:
messages.error(self.request, message)
context = self.get_context_data(form=form)
return render(request, self.template_name, context=context)
form.save()
messages.success(self.request, self.get_success_message())
return redirect(self.success_url)
def handle_stripe_price(self, form):
try:
stripe.api_key = settings.STRIPE_SECRET_KEY
stripe_product_id = form.instance.stripe_product.product_id if form.instance.stripe_product else None
# creating Stripe price only if the subscription is not free
if not form.cleaned_data.get("is_free") and stripe_product_id:
# Getting Stripe Product ID
stripe_product = form.instance.stripe_product
plan = form.instance.plan
# Map the Plan interval to Stripe's recurring interval
# It will only work if the plan title is 'month', 'year' 'week' or 'day'
stripe_interval = plan.title
# Create the Stripe price
stripe_price = stripe.Price.create(
unit_amount=int(
form.cleaned_data["amount"] * 100
), # Amount in cents
currency="gbp", # Adjust the currency as needed
recurring={
"interval": stripe_interval
}, # Use the interval from Plan
product=stripe_product.product_id,
)
# Assign the Stripe price ID to the subscription
form.instance.price_id = stripe_price.id
else:
form.instance.price_id = None # No price ID for free subscriptions
return True, "" # Success
except stripe.error.StripeError as e:
return False, f"Stripe error: {str(e)}"
except Exception as e:
return False, f"An error occurred: {str(e)}"
class SubscriptionView(LoginRequiredMixin, generic.ListView):
page_name = resource_action.RESOURCE_MANAGE_SUBSCRIPTIONS
resource = resource_action.RESOURCE_MANAGE_SUBSCRIPTIONS
action = resource_action.ACTION_READ
model = Subscription
template_name = "manage_subscriptions/subscription_list.html"
context_object_name = "subscription_obj"
def get_queryset(self):
queryset = (
super()
.get_queryset()
.filter(deleted=False, active=True)
.prefetch_related("principal_types")
)
return queryset.order_by("-created_on")
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context["page_name"] = self.page_name
return context
class SubscriptionDeleteView(LoginRequiredMixin, generic.View):
page_name = resource_action.RESOURCE_MANAGE_SUBSCRIPTIONS
resource = resource_action.RESOURCE_MANAGE_SUBSCRIPTIONS
action = resource_action.ACTION_DELETE
model = Subscription
success_url = reverse_lazy("manage_subscriptions:subscription_list")
success_message = constants.RECORD_DELETED
error_message = constants.RECORD_NOT_FOUND
def get(self, request, pk):
try:
# Retrieve the subscription object
subscription = self.model.objects.get(id=pk)
# Checking if there is a Stripe Price ID associated with the subscription
stripe_price_id = subscription.price_id
if stripe_price_id:
stripe.api_key = settings.STRIPE_SECRET_KEY
try:
# Updating the Stripe price to mark it as inactive
stripe.Price.modify(stripe_price_id, active=False)
except stripe.error.StripeError as e:
# Handle Stripe errors
messages.error(request, f"Stripe error: {str(e)}")
return redirect(self.success_url)
# Updating the subscription model record
subscription.deleted = True
subscription.active = False
subscription.save()
messages.success(request, self.success_message)
except self.model.DoesNotExist:
messages.error(request, self.error_message)
return redirect(self.success_url)
class StripeProductCreateOrUpdateView(LoginRequiredMixin, generic.View):
# Set the page_name and resource
page_name = resource_action.RESOURCE_MANAGE_SUBSCRIPTIONS
resource = resource_action.RESOURCE_MANAGE_SUBSCRIPTIONS
# Initialize the action as ACTION_CREATE (can change based on logic)
action = resource_action.ACTION_CREATE # Default action
template_name = "manage_subscriptions/product_add.html"
model = StripeProduct
form_class = StripeProductForm
success_url = reverse_lazy("manage_subscriptions:stripe_product_list")
error_message = "An error occurred while saving the data."
# Determine the success message dynamically based on whether it's an update or create
def get_success_message(self):
self.success_message = (
constants.RECORD_CREATED if not self.object else constants.RECORD_UPDATED
)
return self.success_message
# Get the object (if exists) based on URL parameter 'pk'
def get_object(self):
pk = self.kwargs.get("pk")
return get_object_or_404(self.model, pk=pk) if pk else None
# Add page_name and operation to the context
def get_context_data(self, **kwargs):
context = {
"page_name": self.page_name,
"operation": "Add" if not self.object else "Edit",
}
context.update(kwargs) # Include any additional context data passed to the view
return context
def get(self, request, *args, **kwargs):
self.object = self.get_object()
# If an object is found, change action to ACTION_UPDATE
if self.object is not None:
self.action = resource_action.ACTION_UPDATE
form = self.form_class(instance=self.object)
context = self.get_context_data(form=form)
return render(request, self.template_name, context=context)
def post(self, request, *args, **kwargs):
self.object = self.get_object()
# If an object is found, change action to ACTION_UPDATE
if self.object is not None:
self.action = resource_action.ACTION_UPDATE
form = self.form_class(request.POST, instance=self.object)
if not form.is_valid():
print(form.errors)
context = self.get_context_data(form=form)
return render(request, self.template_name, context=context)
success, message = self.handle_stripe_product(form)
if not success:
messages.error(self.request, message)
context = self.get_context_data(form=form)
return render(request, self.template_name, context=context)
form.save()
messages.success(self.request, self.get_success_message())
return redirect(self.success_url)
def handle_stripe_product(self, form):
try:
stripe.api_key = settings.STRIPE_SECRET_KEY
stripe_product = stripe.Product.create(
name=form.cleaned_data.get("title"),
description=form.cleaned_data.get("description"),
)
# Save Stripe Product ID to the form instance
form.instance.product_id = stripe_product.id
return True, "" # Success
except stripe.error.StripeError as e:
return False, f"Stripe error: {str(e)}"
except Exception as e:
return False, f"An error occurred: {str(e)}"
class StripeProductView(LoginRequiredMixin, generic.ListView):
page_name = resource_action.RESOURCE_MANAGE_SUBSCRIPTIONS
resource = resource_action.RESOURCE_MANAGE_SUBSCRIPTIONS
action = resource_action.ACTION_READ
model = StripeProduct
template_name = "manage_subscriptions/product_list.html"
context_object_name = "product_obj"
def get_queryset(self):
queryset = super().get_queryset().filter(deleted=False, active=True)
return queryset.order_by("-created_on")
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context["page_name"] = self.page_name
return context
class StripeProductDeleteView(LoginRequiredMixin, generic.View):
page_name = resource_action.RESOURCE_MANAGE_SUBSCRIPTIONS
resource = resource_action.RESOURCE_MANAGE_SUBSCRIPTIONS
action = resource_action.ACTION_DELETE
model = StripeProduct
success_url = reverse_lazy("manage_subscriptions:stripe_product_list")
success_message = constants.RECORD_DELETED
error_message = constants.RECORD_NOT_FOUND
def get(self, request, pk):
try:
# Retrieve the subscription object
product = self.model.objects.get(id=pk)
# Checking if there is a Stripe Product ID associated with the subscription
stripe_product_id = product.product_id
if stripe_product_id:
stripe.api_key = settings.STRIPE_SECRET_KEY
try:
# Updating the Stripe price to mark it as inactive
stripe.Product.modify(stripe_product_id, active=False)
except stripe.error.StripeError as e:
# Handle Stripe errors
messages.error(request, f"Stripe error: {str(e)}")
return redirect(self.success_url)
# Updating the subscription model record
product.deleted = True
product.active = False
product.save()
messages.success(request, self.success_message)
except self.model.DoesNotExist:
messages.error(request, self.error_message)
return redirect(self.success_url)
# class PlanCreateOrUpdateView(LoginRequiredMixin, generic.View):
# # Set the page_name and resource
# page_name = resource_action.RESOURCE_MANAGE_SUBSCRIPTIONS
# resource = resource_action.RESOURCE_MANAGE_SUBSCRIPTIONS
# # Initialize the action as ACTION_CREATE (can change based on logic)
# action = resource_action.ACTION_CREATE # Default action
# template_name = "manage_subscriptions/plan_add.html"
# model = Plan
# form_class = PlanForm
# success_url = reverse_lazy("manage_subscriptions:plan_list")
# error_message = "An error occurred while saving the data."
# # Determine the success message dynamically based on whether it's an update or create
# def get_success_message(self):
# self.success_message = (
# constants.RECORD_CREATED if not self.object else constants.RECORD_UPDATED
# )
# return self.success_message
# # Get the object (if exists) based on URL parameter 'pk'
# def get_object(self):
# pk = self.kwargs.get("pk")
# return get_object_or_404(self.model, pk=pk) if pk else None
# # Add page_name and operation to the context
# def get_context_data(self, **kwargs):
# context = {
# "page_name": self.page_name,
# "operation": "Add" if not self.object else "Edit",
# }
# context.update(kwargs) # Include any additional context data passed to the view
# return context
# def get(self, request, *args, **kwargs):
# self.object = self.get_object()
# # If an object is found, change action to ACTION_UPDATE
# if self.object is not None:
# self.action = resource_action.ACTION_UPDATE
# form = self.form_class(instance=self.object)
# context = self.get_context_data(form=form)
# return render(request, self.template_name, context=context)
# def post(self, request, *args, **kwargs):
# self.object = self.get_object()
# # If an object is found, change action to ACTION_UPDATE
# if self.object is not None:
# self.action = resource_action.ACTION_UPDATE
# form = self.form_class(request.POST, instance=self.object)
# if not form.is_valid():
# print(form.errors)
# context = self.get_context_data(form=form)
# return render(request, self.template_name, context=context)
# form.save()
# messages.success(self.request, self.get_success_message())
# return redirect(self.success_url)
class PlanView(LoginRequiredMixin, generic.ListView):
page_name = resource_action.RESOURCE_MANAGE_SUBSCRIPTIONS
resource = resource_action.RESOURCE_MANAGE_SUBSCRIPTIONS
action = resource_action.ACTION_READ
model = Plan
template_name = "manage_subscriptions/plan_list.html"
context_object_name = "plan_obj"
def get_queryset(self):
return super().get_queryset().filter(deleted=False)
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context["page_name"] = self.page_name
return context
# class PlanDeleteView(LoginRequiredMixin, generic.View):
# page_name = resource_action.RESOURCE_MANAGE_SUBSCRIPTIONS
# resource = resource_action.RESOURCE_MANAGE_SUBSCRIPTIONS
# action = resource_action.ACTION_DELETE
# model = Plan
# success_url = reverse_lazy("manage_subscriptions:plan_list")
# success_message = constants.RECORD_DELETED
# error_message = constants.RECORD_NOT_FOUND
# def get(self, request, pk):
# try:
# type_obj = self.model.objects.get(id=pk)
# type_obj.deleted = True
# type_obj.active = False
# type_obj.save()
# messages.success(request, self.success_message)
# except self.model.DoesNotExist:
# messages.success(request, self.error_message)
# return redirect(self.success_url)
class PrincipalSubscriptionCreateOrUpdateView(LoginRequiredMixin, generic.View):
# Set the page_name and resource
page_name = resource_action.RESOURCE_MANAGE_SUBSCRIPTIONS
resource = resource_action.RESOURCE_MANAGE_SUBSCRIPTIONS
# Initialize the action as ACTION_CREATE (can change based on logic)
action = resource_action.ACTION_CREATE # Default action
template_name = "manage_subscriptions/principal_subscription_add.html"
model = PrincipalSubscription
form_class = PrincipalSubscriptionForm
success_url = reverse_lazy("manage_subscriptions:principal_subscriptions_list")
error_message = "An error occurred while saving the data."
# Determine the success message dynamically based on whether it's an update or create
def get_success_message(self):
self.success_message = (
constants.RECORD_CREATED if not self.object else constants.RECORD_UPDATED
)
return self.success_message
# Get the object (if exists) based on URL parameter 'pk'
def get_object(self):
pk = self.kwargs.get("pk")
return get_object_or_404(self.model, pk=pk) if pk else None
# Add page_name and operation to the context
def get_context_data(self, **kwargs):
context = {
"page_name": self.page_name,
"operation": "Add" if not self.object else "Edit",
}
context.update(kwargs) # Include any additional context data passed to the view
return context
def get(self, request, *args, **kwargs):
self.object = self.get_object()
# If an object is found, change action to ACTION_UPDATE
if self.object is not None:
self.action = resource_action.ACTION_UPDATE
form = self.form_class(instance=self.object)
context = self.get_context_data(form=form)
return render(request, self.template_name, context=context)
def post(self, request, *args, **kwargs):
self.object = self.get_object()
# If an object is found, change action to ACTION_UPDATE
if self.object is not None:
self.action = resource_action.ACTION_UPDATE
form = self.form_class(request.POST, instance=self.object)
if not form.is_valid():
print(form.errors)
context = self.get_context_data(form=form)
return render(request, self.template_name, context=context)
form.save()
messages.success(self.request, self.get_success_message())
return redirect(self.success_url)
class PrincipalSubscriptionView(LoginRequiredMixin, generic.ListView):
page_name = resource_action.RESOURCE_PRINCIPAL_SUBSCRIPTIONS
resource = resource_action.RESOURCE_PRINCIPAL_SUBSCRIPTIONS
action = resource_action.ACTION_READ
model = PrincipalSubscription
template_name = "manage_subscriptions/principal_subscriptions_list.html"
context_object_name = "principal_subscription_obj"
def get_queryset(self):
return super().get_queryset().all()
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context["page_name"] = self.page_name
return context
class PrincipalSubscriptionDeleteView(LoginRequiredMixin, generic.View):
page_name = resource_action.RESOURCE_MANAGE_SUBSCRIPTIONS
resource = resource_action.RESOURCE_MANAGE_SUBSCRIPTIONS
action = resource_action.ACTION_DELETE
model = PrincipalSubscription
success_url = reverse_lazy("manage_subscriptions:principal_subscriptions_list")
success_message = constants.RECORD_DELETED
error_message = constants.RECORD_NOT_FOUND
def get(self, request, pk):
try:
type_obj = self.model.objects.get(id=pk)
type_obj.deleted = True
type_obj.active = False
type_obj.save()
messages.success(request, self.success_message)
except self.model.DoesNotExist:
messages.success(request, self.error_message)
return redirect(self.success_url)
class SubscriptionPageView(TemplateView):
template_name = "stripe_html/index.html"
def get(self, request, *args, **kwargs):
# Example of extracting the token from a query parameter or cookie
token = request.GET.get("token") or request.session.get("jwt")
print("token: ", token)
if token:
request.session["jwt"] = token
print("request.session: ", request.session)
try:
# Decode and validate token
payload = jwt.decode(token, settings.SECRET_KEY, algorithms=["HS256"])
print("payload: ", payload)
try:
UserModel = get_user_model()
user = UserModel.objects.get(id=payload["user_id"])
# Manually specify the authentication backend
user.backend = "django.contrib.auth.backends.ModelBackend"
# Log the user in
login(request, user)
print("Logged in user: ", user)
except IAmPrincipal.DoesNotExist:
# Handle expired token
return HttpResponseBadRequest("No Principal Found")
except jwt.ExpiredSignatureError:
# Handle expired token
return HttpResponseBadRequest("Expired Signature Error")
except jwt.InvalidTokenError:
return HttpResponseBadRequest("Invalid Token Error")
return super().get(request, *args, **kwargs)
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
request = self.request
if request.user.is_authenticated:
print("request.user: ", request.user)
subscriptions = Subscription.objects.filter(
principal_types=request.user.principal_type,
active=True,
deleted=False,
is_free=False,
)
if subscriptions.exists():
context["subscriptions"] = subscriptions
context["stripeCheckoutUrl"] = settings.STRIPE_CHECKOUT_URL
context["stripeFinalUrl"] = settings.STRIPE_FINAL_URL
context["couponValidityCheckUrl"] = settings.COUPON_VALIDITY_CHECK_URL
else:
# Handling the case where no subscriptions are found for the principal type.
context["error"] = "No subscriptions found for your user type."
return context
@csrf_exempt
def stripe_config(request):
if request.method == "GET":
stripe_config = {"publicKey": settings.STRIPE_PUBLISH_KEY}
return JsonResponse(stripe_config, safe=False)
@csrf_exempt
@require_POST
def validate_coupon(request):
data = json.loads(request.body)
coupon_code = data.get("couponCode", None)
subscription_id = data.get("subscriptionId", None)
try:
subscription = Subscription.objects.get(id=subscription_id)
except Subscription.DoesNotExist:
return JsonResponse({"error": "Subscription not found."}, status=404)
# If no coupon code is provided, assume no discount and proceed
if not coupon_code:
return JsonResponse({"message": "No coupon code provided."}, status=200)
# Validating Coupon
try:
coupon = Coupon.objects.get(coupon_code=coupon_code)
if not coupon.is_valid():
return JsonResponse({"error": "Coupon is not valid."}, status=400)
# Check discount amount
if coupon.discount_amount and coupon.discount_amount > subscription.amount:
return JsonResponse(
{"error": "Coupon discount amount exceeds subscription amount."},
status=400,
)
# Check discount percentage
if coupon.discount_percentage:
discount_amount = (
coupon.discount_percentage / Decimal("100")
) * subscription.amount
if discount_amount > subscription.amount:
return JsonResponse(
{
"error": "Coupon discount percentage exceeds subscription amount."
},
status=400,
)
# Retrieving coupon from Stripe if applicable
if coupon.coupon_id:
try:
stripe_coupon = stripe.Coupon.retrieve(coupon.coupon_id)
print("stripe_coupon: ", stripe_coupon)
return JsonResponse({"data": {"coupon": stripe_coupon}}, status=200)
except stripe.error.InvalidRequestError:
return JsonResponse(
{"error": f"Invalid coupon code: {coupon_code}"}, status=400
)
except stripe.error.StripeError as e:
return JsonResponse({"error": f"Stripe error: {str(e)}"}, status=400)
else:
return JsonResponse(
{
"error": "Coupon is either invalid, expired, or not associated with Stripe."
},
status=400,
)
except Coupon.DoesNotExist:
return JsonResponse({"error": "Coupon not found."}, status=404)
@csrf_exempt
@require_POST
def create_checkout_session(request):
stripe.api_key = settings.STRIPE_SECRET_KEY
data = json.loads(request.body)
subscription_id = data.get("subscriptionId")
coupon_code = data.get("couponCode")
principal_id = request.user.id
try:
subscription = Subscription.objects.get(id=subscription_id)
except Subscription.DoesNotExist:
return JsonResponse({"error": "Subscription not found."}, status=404)
order_id = f"order_{timezone.localtime().timestamp()}_{request.user.email}"
# Default transaction amount based on subscription amount
final_amount = subscription.amount
print("Before Session Data")
session_data = {
"payment_method_types": ["card"],
"success_url": request.build_absolute_uri("/subscriptions/success/"),
"cancel_url": request.build_absolute_uri("/subscriptions/cancel/"),
"metadata": {
"principal": str(request.user.id),
"order_id": order_id,
"subscription_id": str(subscription.id),
"subscription": str(subscription.id),
"transaction_id": "",
"couponCode": coupon_code if coupon_code else None,
},
}
print("session_data: ", session_data)
# Coupon Handling
if coupon_code:
try:
stripe_coupon = stripe.Coupon.retrieve(coupon_code)
session_data["discounts"] = [{"coupon": stripe_coupon.id}]
except stripe.error.InvalidRequestError:
return JsonResponse(
{"error": f"Invalid coupon code: {coupon_code}"}, status=400
)
except stripe.error.StripeError as e:
return JsonResponse({"error": f"Stripe error: {str(e)}"}, status=400)
# Create a Transaction object with status INITIATE
transaction = Transaction.objects.create(
principal=request.user,
principal_subscription=None, # Subscription not created yet
transaction_type=TransactionType.PAYMENT,
payment_method=PaymentMethod.CARD,
transaction_status=TransactionStatus.INITIATE,
amount=final_amount,
order_id=order_id,
comment="Principal Subscription Initiated",
)
# Updating transaction_id in session_data metadata
session_data["metadata"]["transaction_id"] = str(transaction.id)
# Creating the Stripe Checkout Session
try:
if subscription.price_id:
session_data["line_items"] = [
{
"price": subscription.price_id,
"quantity": 1,
}
]
session_data["mode"] = "subscription"
else:
session_data["line_items"] = [
{
"price_data": {
"currency": "usd",
"product_data": {
"name": subscription.title,
"description": subscription.short_description,
},
"unit_amount": int(subscription.amount * 100),
},
"quantity": 1,
}
]
session_data["mode"] = "payment"
session_data["invoice_creation"] = {
"invoice_data": {
"metadata": session_data["metadata"],
}
}
checkout_session = stripe.checkout.Session.create(**session_data)
return JsonResponse({"sessionId": checkout_session["id"]})
except Exception as e:
return JsonResponse({"error": str(e)}, status=500)
class SuccessView(TemplateView):
template_name = "stripe_html/success.html"
class CancelView(TemplateView):
template_name = "stripe_html/cancel.html"