feat(billing): add missing payment methods and configurations
- Added migration to include global payment method configurations for Stripe and PayPal (both disabled). - Ensured existing payment methods like bank transfer and manual payment are correctly configured. - Added database constraints and indexes for improved data integrity in billing models. - Introduced foreign key relationship between CreditTransaction and Payment models. - Added webhook configuration fields to PaymentMethodConfig for future payment gateway integrations. - Updated SignUpFormUnified component to handle payment method selection based on user country and plan. - Implemented PaymentHistory component to display user's payment history with status indicators.
This commit is contained in:
IGNY8 VPS (Salman)
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"""
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Invoice PDF views
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API endpoints for generating and downloading invoice PDFs
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"""
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from django.http import HttpResponse
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from rest_framework.decorators import api_view, permission_classes
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from rest_framework.permissions import IsAuthenticated
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from igny8_core.business.billing.models import Invoice
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from igny8_core.business.billing.services.pdf_service import InvoicePDFGenerator
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from igny8_core.business.billing.utils.errors import not_found_response
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import logging
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logger = logging.getLogger(__name__)
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@api_view(['GET'])
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@permission_classes([IsAuthenticated])
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def download_invoice_pdf(request, invoice_id):
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"""
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Download invoice as PDF
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GET /api/v1/billing/invoices/<id>/pdf/
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"""
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try:
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invoice = Invoice.objects.prefetch_related('line_items').get(
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id=invoice_id,
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account=request.user.account
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)
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except Invoice.DoesNotExist:
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return not_found_response('Invoice', invoice_id)
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# Generate PDF
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pdf_buffer = InvoicePDFGenerator.generate_invoice_pdf(invoice)
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# Return PDF response
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response = HttpResponse(pdf_buffer.read(), content_type='application/pdf')
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response['Content-Disposition'] = f'attachment; filename="invoice_{invoice.invoice_number}.pdf"'
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logger.info(f'Invoice PDF downloaded: {invoice.invoice_number} by user {request.user.id}')
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return response
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208
backend/igny8_core/business/billing/views/refund_views.py
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208
backend/igny8_core/business/billing/views/refund_views.py
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"""
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Refund workflow for payments
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Handles full and partial refunds with proper accounting
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"""
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from decimal import Decimal
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from django.db import transaction
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from django.utils import timezone
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from rest_framework import status
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from rest_framework.decorators import api_view, permission_classes
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from rest_framework.permissions import IsAuthenticated
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from igny8_core.business.billing.models import Payment, CreditTransaction, Invoice
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from igny8_core.business.billing.utils.errors import (
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error_response, success_response, not_found_response, ErrorCode
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)
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from igny8_core.business.billing.services.email_service import BillingEmailService
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import logging
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logger = logging.getLogger(__name__)
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@api_view(['POST'])
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@permission_classes([IsAuthenticated])
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def initiate_refund(request, payment_id):
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"""
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Initiate a refund for a payment
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Request body:
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{
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"amount": "50.00", # Optional, defaults to full refund
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"reason": "Customer requested refund",
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"refund_credits": true # Whether to deduct credits
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}
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"""
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try:
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payment = Payment.objects.select_related('invoice', 'account').get(
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id=payment_id,
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account=request.user.account
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)
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except Payment.DoesNotExist:
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return not_found_response('Payment', payment_id)
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# Validate payment can be refunded
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if payment.status != 'succeeded':
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return error_response(
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message='Only successful payments can be refunded',
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code=ErrorCode.INVALID_STATUS_TRANSITION,
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status_code=status.HTTP_400_BAD_REQUEST
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)
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if payment.refunded_at:
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return error_response(
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message='This payment has already been refunded',
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code=ErrorCode.PAYMENT_ALREADY_PROCESSED,
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status_code=status.HTTP_400_BAD_REQUEST
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)
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# Parse refund amount
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refund_amount = request.data.get('amount')
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if refund_amount:
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refund_amount = Decimal(str(refund_amount))
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if refund_amount > Decimal(payment.amount):
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return error_response(
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message=f'Refund amount cannot exceed payment amount ({payment.amount})',
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code=ErrorCode.VALIDATION_ERROR,
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status_code=status.HTTP_400_BAD_REQUEST
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)
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else:
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refund_amount = Decimal(payment.amount)
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reason = request.data.get('reason', 'Refund requested')
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refund_credits = request.data.get('refund_credits', True)
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try:
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with transaction.atomic():
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# Process refund based on payment method
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refund_successful = False
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if payment.payment_method == 'stripe':
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refund_successful = _process_stripe_refund(payment, refund_amount, reason)
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elif payment.payment_method == 'paypal':
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refund_successful = _process_paypal_refund(payment, refund_amount, reason)
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else:
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# Manual payment refund - mark as refunded
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refund_successful = True
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if not refund_successful:
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return error_response(
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message='Refund processing failed. Please contact support.',
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code=ErrorCode.INTERNAL_ERROR,
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status_code=status.HTTP_500_INTERNAL_SERVER_ERROR
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)
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# Update payment record
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payment.status = 'refunded'
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payment.refunded_at = timezone.now()
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payment.metadata['refund_amount'] = str(refund_amount)
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payment.metadata['refund_reason'] = reason
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payment.save(update_fields=['status', 'refunded_at', 'metadata'])
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# Update invoice if full refund
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if refund_amount == Decimal(payment.amount):
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invoice = payment.invoice
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if invoice.status == 'paid':
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invoice.status = 'pending'
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invoice.paid_at = None
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invoice.save(update_fields=['status', 'paid_at'])
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# Deduct credits if applicable
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if refund_credits and payment.credit_transactions.exists():
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for credit_tx in payment.credit_transactions.all():
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if credit_tx.amount > 0: # Only deduct positive credits
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# Get current balance
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account = payment.account
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current_balance = account.credit_balance
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# Create deduction transaction
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CreditTransaction.objects.create(
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account=account,
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transaction_type='refund',
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amount=-credit_tx.amount,
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balance_after=current_balance - credit_tx.amount,
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description=f'Refund: {reason}',
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payment=payment,
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metadata={'original_transaction': credit_tx.id}
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)
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# Update account balance
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account.credit_balance -= credit_tx.amount
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account.save(update_fields=['credit_balance'])
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# Send refund notification email
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try:
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BillingEmailService.send_refund_notification(
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user=payment.account.owner,
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payment=payment,
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refund_amount=str(refund_amount),
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reason=reason
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)
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except Exception as e:
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logger.error(f"Failed to send refund email for payment {payment_id}: {str(e)}")
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return success_response(
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data={
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'payment_id': payment.id,
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'refund_amount': str(refund_amount),
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'status': 'refunded'
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},
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message='Refund processed successfully'
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)
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except Exception as e:
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logger.exception(f"Refund error for payment {payment_id}: {str(e)}")
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return error_response(
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message='An error occurred while processing the refund',
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code=ErrorCode.INTERNAL_ERROR,
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status_code=status.HTTP_500_INTERNAL_SERVER_ERROR
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)
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def _process_stripe_refund(payment: Payment, amount: Decimal, reason: str) -> bool:
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"""Process Stripe refund"""
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try:
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import stripe
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from igny8_core.business.billing.utils.payment_gateways import get_stripe_client
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stripe_client = get_stripe_client()
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refund = stripe_client.Refund.create(
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payment_intent=payment.stripe_payment_intent_id,
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amount=int(amount * 100), # Convert to cents
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reason='requested_by_customer',
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metadata={'reason': reason}
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)
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payment.metadata['stripe_refund_id'] = refund.id
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return refund.status == 'succeeded'
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except Exception as e:
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logger.exception(f"Stripe refund failed for payment {payment.id}: {str(e)}")
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return False
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def _process_paypal_refund(payment: Payment, amount: Decimal, reason: str) -> bool:
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"""Process PayPal refund"""
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try:
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from igny8_core.business.billing.utils.payment_gateways import get_paypal_client
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paypal_client = get_paypal_client()
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refund_request = {
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'amount': {
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'value': str(amount),
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'currency_code': payment.currency
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},
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'note_to_payer': reason
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}
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refund = paypal_client.payments.captures.refund(
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payment.paypal_capture_id,
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refund_request
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)
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payment.metadata['paypal_refund_id'] = refund.id
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return refund.status == 'COMPLETED'
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except Exception as e:
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logger.exception(f"PayPal refund failed for payment {payment.id}: {str(e)}")
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return False
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