Stripe Frontend Implementation - Phase 2 Complete ✅

Implementation Date: December 3, 2024 Status: Phase 2 Frontend Complete

---

Overview

This document summarizes the complete frontend implementation of Stripe payment integration for the CivStart GovFit platform. The frontend now includes a full billing management interface, credit pack purchase flow, and real-time subscription updates.

---

Files Created

Type Definitions & Utilities

apps/frontend/lib/stripe-types.ts

• TypeScript interfaces for all Stripe-related data
• Credit pack configuration with pricing
• GovFit subscription types

React Hooks

apps/frontend/hooks/useStripe.ts

• useActiveSubscriptions() - Fetch active subscriptions (GovFit + Credit Packs)
• useBillingHistory() - Fetch invoice history
• useUpcomingInvoice() - Fetch next invoice
• useCreateCheckoutSession() - Create Stripe checkout session
• useCancelSubscription() - Cancel a subscription
• useStripeCheckout() - Complete checkout flow with redirects

apps/frontend/hooks/useSubscriptionUpdates.ts

• Real-time WebSocket listeners for subscription events
• Auto-refresh data on subscription changes
• Toast notifications for important events

Billing Components

apps/frontend/components/billing/SubscriptionStatus.tsx

• Display GovFit subscription status
• Show grace period warnings
• Display renewal dates
• Status badges (Active, Past Due, Canceled, etc.)

apps/frontend/components/billing/CreditPackPurchase.tsx

• Interactive credit pack selection
• Tabbed interface (Monthly vs One-Time)
• Pricing cards with features
• "Popular" badge for recommended packs
• Direct Stripe checkout integration

apps/frontend/components/billing/ActiveSubscriptions.tsx

• List all active credit pack subscriptions
• Show renewal dates and rollover limits
• Cancel subscription actions
• Total monthly credits summary

apps/frontend/components/billing/BillingHistory.tsx

• Table view of past invoices
• Invoice status badges
• Download PDF and view online links
• Load more pagination

apps/frontend/components/billing/CancelSubscriptionModal.tsx

• Confirmation modal with warnings
• Explains what happens on cancellation
• Loading states during cancellation

apps/frontend/components/billing/index.ts

• Barrel export for all billing components

Subscription Widgets

apps/frontend/components/subscription/SubscriptionWarningBanner.tsx

• Prominent banner for subscription issues
• Grace period warnings
• Expiring soon notifications (7 days, 3 days)
• Payment failed alerts
• Dismissible with "Manage Billing" CTA

apps/frontend/components/subscription/CreditBalanceWidget.tsx

• Two variants: compact and full
• Real-time credit balance display
• Progress bar visualization
• Low credits / out of credits warnings
• Purchase more credits button
• Unlimited tier support

apps/frontend/components/subscription/index.ts

• Barrel export for subscription widgets

Pages & Layouts

apps/frontend/app/settings/layout.tsx

• Tabbed navigation for Settings
• Switches between "Personal" and "Billing" tabs
• Consistent header across settings pages

apps/frontend/app/govintel/billing/page.tsx

• Main billing management page
• Integrates all billing components
• Handles Stripe checkout redirects (success/cancel)
• Real-time subscription updates via WebSocket
• Error handling and loading states

WebSocket Integration

apps/frontend/lib/websocket.ts (Updated)

• Added new event types:
  • subscription:updated
  • subscription:expiring
  • subscription:grace_period
  • subscription:locked
  • credits:reset
• Type-safe event interfaces

---

How to Access the Billing Page

Option 1: Sidebar Navigation (Recommended)

1. Log in to the app
2. Look at the left sidebar
3. Under the "Settings" section, click "Billing"

Option 2: Direct Navigation

Navigate to: /govintel/billing

---

Features Implemented

✅ Billing Management

• View GovFit subscription status
• See current period end date
• Grace period warnings
• Payment status indicators

✅ Credit Pack Purchases

• Browse all 4 credit pack tiers (1, 4, 12, 28 credits)
• Choose between Monthly or One-Time purchase
• See pricing per credit
• Understand rollover limits
• Popular pack highlighting
• Direct checkout to Stripe

✅ Active Subscriptions

• List all active credit pack subscriptions
• View renewal dates
• See rollover limits
• Cancel subscriptions
• Track last credit allocation

✅ Billing History

• View past invoices
• Download invoice PDFs
• Open invoices in browser
• See payment status
• Load more pagination

✅ Real-Time Updates

• Subscription status changes
• Credit resets (monthly rollover)
• Expiring soon warnings (7 days)
• Grace period notifications
• Locked account alerts
• Automatic data refresh

✅ Subscription Widgets (Reusable)

• Credit balance widget (compact/full)
• Subscription warning banners
• Can be placed anywhere in the app

---

Credit Pack Pricing Reference

Pack	Credits	One-Time	Monthly	Rollover Limit
Starter	1	$650	$618/mo	4 credits
Growth	4	$2,000	$1,800/mo	10 credits
Professional	12	$5,000	$4,250/mo	30 credits
Enterprise	28	$10,000	$8,000/mo	50 credits

GovFit Platform Access: $1,000/month ($12,000/year) - Includes 1 credit/month

---

Testing Checklist

Manual Testing Steps

1. Navigate to Billing Page

   • Go to /govintel/billing
   • Verify page loads without errors
   • Check that tabs work (Personal ↔️ Billing)

2. View Subscription Status

   • Verify GovFit subscription status displays correctly
   • Check badge colors (Active = green, Past Due = red)
   • Confirm dates are formatted properly

3. Credit Pack Purchase Flow

   • Switch between Monthly and One-Time tabs
   • Click on different credit packs
   • Verify Stripe checkout opens
   • Test success redirect (checkout but don't complete payment)
   • Test cancel redirect

4. Active Subscriptions

   • View list of active subscriptions
   • Check total monthly credits calculation
   • Test cancel subscription modal
   • Verify cancellation confirmation

5. Billing History

   • View invoice list
   • Check invoice status badges
   • Test PDF download links
   • Test invoice view links

6. Real-Time Updates

   • Subscribe to a credit pack
   • Verify toast notification appears
   • Check data refreshes automatically
   • Test WebSocket connection indicator

7. Subscription Widgets

   • Add <CreditBalanceWidget /> to a page
   • Add <SubscriptionWarningBanner /> to a page
   • Verify they display correctly
   • Test responsive design

---

Integration with Existing Code

React Query Integration

All hooks use @tanstack/react-query for:

• Automatic caching (30s-60s stale time)
• Background refetching
• Loading and error states
• Mutation handling

WebSocket Integration

Uses existing WebSocketProvider from:

• apps/frontend/lib/WebSocketProvider.tsx
• apps/frontend/lib/websocket.ts

Clerk Authentication

All API calls use Clerk's useAuth() hook for JWT tokens

UI Components

Uses existing shadcn/ui components from apps/frontend/components/ui/

---

Environment Variables Required

Ensure these are set in your .env.local:

NEXT_PUBLIC_API_URL=http://localhost:3010  # or your backend URL
NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY=pk_test_...  # From Stripe Dashboard

---

Usage Examples

Add Credit Balance Widget to Dashboard

import { CreditBalanceWidget } from "@/components/subscription";

export default function Dashboard() {
  return (
    <div>
      <CreditBalanceWidget variant="full" />
    </div>
  );
}

Add Subscription Warning Banner

import { SubscriptionWarningBanner } from "@/components/subscription";

export default function Layout({ children }) {
  return (
    <div>
      <SubscriptionWarningBanner />
      {children}
    </div>
  );
}

Programmatic Checkout

import { useStripeCheckout } from "@/hooks/useStripe";
import { CREDIT_PACKS } from "@/lib/stripe-types";

function BuyButton() {
  const { startCheckout, isLoading } = useStripeCheckout();

  const handleClick = async () => {
    const pack = CREDIT_PACKS[1]; // 4-credit pack
    await startCheckout(pack.monthlyLookupKey);
  };

  return (
    <button onClick={handleClick} disabled={isLoading}>
      Buy Credits
    </button>
  );
}

---

Next Steps

Recommended Enhancements

• Add subscription upgrade/downgrade flow
• Add payment method management
• Add email notifications for billing events
• Add usage analytics dashboard
• Add referral/discount code system

Production Checklist

• Test with live Stripe keys
• Test with real payment methods
• Verify webhook events are received
• Test all error scenarios
• Add analytics tracking
• Add user feedback forms

---

Support & Documentation

Stripe Documentation

• Checkout Sessions
• Subscriptions
• Webhooks

CivStart Backend API

All endpoints documented in: STRIPE_IMPLEMENTATION_SUMMARY.md

---

Troubleshooting

"Cannot see payment UI"

Solution: Navigate to /govintel/billing or click the "Billing" tab in Settings

"Checkout button not working"

Check:

1. NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY is set
2. Backend is running and accessible
3. User is authenticated (logged in)
4. Check browser console for errors

"Real-time updates not working"

Check:

1. WebSocket connection is established
2. Backend WebSocket server is running
3. Stripe webhooks are configured
4. Check browser console for WebSocket errors

"Subscriptions not loading"

Check:

1. Backend /stripe/subscriptions endpoint is accessible
2. User has valid JWT token
3. Check network tab for API errors
4. Verify database has subscription data

---

Phase 2 Frontend Implementation Complete! ✅

All billing features are now live and ready for testing.