Phase 3 & Phase 4 - Completed
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# Third-Party Integrations Implementation Plan
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**Version:** 1.0
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**Created:** January 6, 2026
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**Version:** 1.1
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**Created:** January 6, 2026
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**Updated:** January 7, 2026
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**Status:** ✅ **IMPLEMENTATION COMPLETE**
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**Covers:** FINAL-PRELAUNCH.md Phase 3.2, 3.3, and Phase 4
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---
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## Implementation Status
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| Phase | Component | Status | Notes |
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|-------|-----------|--------|-------|
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| 3.2 | Stripe Integration | ✅ Complete | Full checkout, billing portal, webhooks |
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| 3.2 | PayPal Integration | ✅ Complete | REST API v2, orders, subscriptions |
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| 3.3 | Plan Upgrade Flow | ✅ Complete | Stripe/PayPal/Manual payment selection |
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| 3.3 | Credit Purchase Flow | ✅ Complete | One-time credit package checkout |
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| 4 | Resend Email Service | ✅ Complete | Transactional emails with templates |
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| 4 | Brevo Marketing | ⏸️ Deferred | Future implementation |
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---
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## Executive Summary
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This document provides complete implementation details for:
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@@ -75,9 +90,11 @@ class IntegrationProvider(models.Model):
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| Service | Location | Status |
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|---------|----------|--------|
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| `PaymentService` | `business/billing/services/payment_service.py` | ✅ Scaffolded |
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| `InvoiceService` | `business/billing/services/invoice_service.py` | ✅ Scaffolded |
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| `BillingEmailService` | `business/billing/services/email_service.py` | ✅ Uses Django send_mail |
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| `PaymentService` | `business/billing/services/payment_service.py` | ✅ Complete |
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| `InvoiceService` | `business/billing/services/invoice_service.py` | ✅ Complete |
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| `StripeService` | `business/billing/services/stripe_service.py` | ✅ **NEW - Complete** |
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| `PayPalService` | `business/billing/services/paypal_service.py` | ✅ **NEW - Complete** |
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| `EmailService` | `business/billing/services/email_service.py` | ✅ **Updated - Resend Integration** |
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---
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@@ -1110,14 +1127,17 @@ def send_low_credits_warning(account, current_credits, threshold):
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## 5. Required Credentials Checklist
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> **Note:** All credentials are stored in the `IntegrationProvider` model and can be configured via Django Admin. The implementation supports both sandbox (testing) and production environments.
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### 5.1 Stripe Credentials
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| Item | Value | Status |
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|------|-------|--------|
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| Publishable Key (Live) | `pk_live_...` | ⬜ Needed |
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| Secret Key (Live) | `sk_live_...` | ⬜ Needed |
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| Webhook Signing Secret | `whsec_...` | ⬜ Needed |
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| Products/Prices Created | Plan IDs | ⬜ Needed |
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| Publishable Key (Live) | `pk_live_...` | ⬜ Add to IntegrationProvider |
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| Secret Key (Live) | `sk_live_...` | ⬜ Add to IntegrationProvider |
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| Webhook Signing Secret | `whsec_...` | ⬜ Add to IntegrationProvider |
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| Products/Prices Created | Plan IDs | ⬜ Create in Stripe Dashboard |
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| **Code Implementation** | — | ✅ **Complete** |
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**Stripe Products to Create:**
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1. **Starter Plan** - $99/mo - `price_starter_monthly`
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| Item | Value | Status |
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|------|-------|--------|
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| Client ID (Live) | `AY...` | ⬜ Needed |
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| Client Secret (Live) | `EL...` | ⬜ Needed |
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| Webhook ID | `WH-...` | ⬜ Needed |
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| Subscription Plans Created | PayPal Plan IDs | ⬜ Needed |
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| Client ID (Live) | `AY...` | ⬜ Add to IntegrationProvider |
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| Client Secret (Live) | `EL...` | ⬜ Add to IntegrationProvider |
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| Webhook ID | `WH-...` | ⬜ Add to IntegrationProvider config |
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| Subscription Plans Created | PayPal Plan IDs | ⬜ Create in PayPal Dashboard |
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| **Code Implementation** | — | ✅ **Complete** |
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### 5.3 Resend Credentials
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| Item | Value | Status |
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|------|-------|--------|
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| API Key | `re_...` | ⬜ Needed |
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| Domain Verified | igny8.com | ⬜ Needed |
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| DNS Records Added | DKIM, SPF | ⬜ Needed |
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| API Key | `re_...` | ⬜ Add to IntegrationProvider |
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| Domain Verified | igny8.com | ⬜ Configure in Resend Dashboard |
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| DNS Records Added | DKIM, SPF | ⬜ Add to DNS provider |
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| **Code Implementation** | — | ✅ **Complete** |
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### 5.4 Brevo Credentials (Future)
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## 6. Implementation Order
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### Phase 1: Backend Setup (2-3 days)
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### Phase 1: Backend Setup ✅ COMPLETE
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1. **Add dependencies:**
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1. **✅ Add dependencies:**
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```bash
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pip install resend>=0.7.0
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# PayPal uses requests (already installed)
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# Stripe already installed
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```
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2. **Create service files:**
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- `backend/igny8_core/business/billing/services/stripe_service.py`
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- `backend/igny8_core/business/billing/services/paypal_service.py`
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- Update `backend/igny8_core/business/billing/services/email_service.py`
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2. **✅ Create service files:**
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- ✅ `backend/igny8_core/business/billing/services/stripe_service.py`
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- ✅ `backend/igny8_core/business/billing/services/paypal_service.py`
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- ✅ Update `backend/igny8_core/business/billing/services/email_service.py`
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3. **Create view files:**
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- `backend/igny8_core/business/billing/views/stripe_views.py`
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- `backend/igny8_core/business/billing/views/paypal_views.py`
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3. **✅ Create view files:**
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- ✅ `backend/igny8_core/business/billing/views/stripe_views.py`
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- ✅ `backend/igny8_core/business/billing/views/paypal_views.py`
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4. **Add URL routes:**
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4. **✅ Add URL routes:**
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```python
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# backend/igny8_core/business/billing/urls.py
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urlpatterns += [
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@@ -1184,65 +1206,84 @@ def send_low_credits_warning(account, current_credits, threshold):
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]
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```
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5. **Add email templates:**
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5. **✅ Add email templates:**
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```
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backend/igny8_core/templates/emails/
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├── base.html
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├── welcome.html
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├── password_reset.html
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├── payment_confirmed.html
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├── email_verification.html
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├── payment_confirmation.html
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├── payment_approved.html
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├── payment_rejected.html
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├── payment_failed.html
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├── subscription_activated.html
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└── low_credits.html
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├── subscription_renewal.html
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├── low_credits.html
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└── refund_notification.html
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```
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### Phase 2: Stripe Configuration (1 day)
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### Phase 2: Stripe Configuration ⏳ PENDING USER CREDENTIALS
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1. Create products and prices in Stripe Dashboard
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2. Configure webhook endpoint
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3. Get API keys and add to IntegrationProvider via admin
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4. Test in sandbox mode
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1. ⏳ Create products and prices in Stripe Dashboard (User action needed)
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2. ⏳ Configure webhook endpoint (User action needed)
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3. ⏳ Get API keys and add to IntegrationProvider via admin (User action needed)
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4. ⏳ Test in sandbox mode (After credentials added)
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### Phase 3: Frontend Integration (1-2 days)
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### Phase 3: Frontend Integration ✅ COMPLETE
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1. Add billing API methods
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2. Update PlansAndBillingPage with payment buttons
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3. Update UsageAnalyticsPage with credit purchase
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4. Add success/cancel handling
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1. ✅ Add billing API methods (stripe, paypal, purchaseCredits, subscribeToPlan)
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2. ✅ Update PlansAndBillingPage with payment buttons
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3. ✅ Add PaymentGatewaySelector component
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4. ✅ Add success/cancel handling
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### Phase 4: Email Configuration (1 day)
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### Phase 4: Email Configuration ⏳ PENDING USER CREDENTIALS
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1. Add Resend API key to IntegrationProvider
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2. Verify domain
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3. Test all email triggers
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1. ⏳ Add Resend API key to IntegrationProvider (User action needed)
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2. ⏳ Verify domain at resend.com (User action needed)
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3. ⏳ Test all email triggers (After credentials added)
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### Phase 5: Testing (1-2 days)
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### Phase 5: Testing ⏳ PENDING USER CREDENTIALS
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1. Test Stripe checkout flow (sandbox)
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2. Test PayPal flow (sandbox)
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3. Test webhook handling
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4. Test email delivery
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5. Switch to production credentials
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1. ⏳ Test Stripe checkout flow (sandbox) - After credentials added
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2. ⏳ Test PayPal flow (sandbox) - After credentials added
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3. ⏳ Test webhook handling - After webhooks configured
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4. ⏳ Test email delivery - After Resend configured
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5. ⏳ Switch to production credentials - After testing complete
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---
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## Summary
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**Total Estimated Time:** 6-9 days
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**Implementation Status:** ✅ **CODE COMPLETE** - Ready for credentials and testing
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**Dependencies:**
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- Stripe account with products/prices created
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- PayPal developer account with app created
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- Resend account with domain verified
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**Time Spent:** 2-3 days (Backend + Frontend implementation)
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**Files to Create:**
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- `stripe_service.py`
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- `stripe_views.py`
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- `paypal_service.py`
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- `paypal_views.py`
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- Updated `email_service.py`
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- 5 email templates
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**Pending Actions (User):**
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- ⏳ Stripe account: Create products/prices, configure webhooks, add API keys
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- ⏳ PayPal developer account: Create app, configure webhooks, add credentials
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- ⏳ Resend account: Verify domain, add API key
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**Files Created:** ✅
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- ✅ `stripe_service.py` (500+ lines)
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- ✅ `stripe_views.py` (560+ lines)
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- ✅ `paypal_service.py` (500+ lines)
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- ✅ `paypal_views.py` (600+ lines)
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- ✅ Updated `email_service.py` (760+ lines)
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- ✅ 12 email templates
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- ✅ `PaymentGatewaySelector.tsx` (160+ lines)
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- ✅ Updated `PlansAndBillingPage.tsx`
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- ✅ Updated `billing.api.ts` (+285 lines)
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**Existing Infrastructure Used:**
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- `IntegrationProvider` model for all credentials
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- `Payment`, `Invoice`, `CreditPackage` models
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- `PaymentService` for payment processing
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- `CreditService` for credit management
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- ✅ `IntegrationProvider` model for all credentials
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- ✅ `Payment`, `Invoice`, `CreditPackage` models
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- ✅ `PaymentService` for payment processing
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- ✅ `CreditService` for credit management
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**Next Steps:**
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1. Add Stripe credentials to Django Admin → Integration Providers
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2. Add PayPal credentials to Django Admin → Integration Providers
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3. Add Resend API key to Django Admin → Integration Providers
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4. Test payment flows in sandbox mode
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5. Switch to production credentials when ready
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