feat: add platform marketing homepage with signup flow

Implement complete marketing homepage for Wizamart targeting Letzshop
vendors in Luxembourg. Includes:

- Marketing homepage with hero, pricing tiers, and add-ons
- 4-step signup wizard with Stripe card collection (30-day trial)
- Letzshop vendor lookup for shop claiming
- Platform API endpoints for pricing, vendors, and signup
- Stripe SetupIntent integration for trial with card upfront
- Database fields for Letzshop vendor identity tracking

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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# Platform Marketing Homepage
## Overview
The Wizamart marketing homepage serves as the main public entry point for Letzshop vendors looking to use the order management platform. It provides a complete self-service signup flow with Stripe payment integration.
**Target Audience:** Letzshop vendors in Luxembourg seeking order management solutions.
**Key Value Proposition:** "Lightweight OMS for Letzshop Sellers" - Order management, inventory, and invoicing built for Luxembourg e-commerce.
## Features Summary
| Feature | URL | Description |
|---------|-----|-------------|
| Marketing Homepage | `/` | Hero, pricing, add-ons, vendor finder |
| Pricing Page | `/pricing` | Detailed tier comparison |
| Find Your Shop | `/find-shop` | Letzshop vendor lookup |
| Signup Wizard | `/signup` | 4-step registration flow |
| Signup Success | `/signup/success` | Welcome & next steps |
---
## Pricing Tiers
Based on `docs/marketing/pricing.md`:
| Tier | Monthly | Annual | Orders/mo | Products | Users | Key Features |
|------|---------|--------|-----------|----------|-------|--------------|
| **Essential** | €49 | €490 | 100 | 200 | 1 | LU invoicing, basic inventory |
| **Professional** | €99 | €990 | 500 | Unlimited | 3 | EU VAT, warehouse locations |
| **Business** | €199 | €1,990 | 2,000 | Unlimited | 10 | Analytics, API, automation |
| **Enterprise** | €399+ | Custom | Unlimited | Unlimited | Unlimited | White-label, SLA, dedicated support |
**Annual Discount:** 2 months free (17% savings)
**Trial Period:** 30 days with card collection upfront (no charge until trial ends)
---
## Add-On Products
| Add-On | Price | Billing | Description |
|--------|-------|---------|-------------|
| Custom Domain | €15 | Annual | Use your own domain (mydomain.com) |
| Premium SSL | €49 | Annual | EV certificate for trust badges |
| Email Package (5) | €5 | Monthly | 5 professional email addresses |
| Email Package (10) | €9 | Monthly | 10 professional email addresses |
| Email Package (25) | €19 | Monthly | 25 professional email addresses |
---
## Page Descriptions
### 1. Marketing Homepage (`/`)
**Template:** `app/templates/platform/homepage-wizamart.html`
**Sections:**
1. **Hero Section**
- Headline: "Lightweight OMS for Letzshop Sellers"
- Subheadline: Order management, inventory, and invoicing
- CTAs: "Start Free Trial" and "Find Your Letzshop Shop"
- Badge: "30-Day Free Trial - No Credit Card Required to Start"
2. **Pricing Section**
- 4 tier cards (Essential, Professional, Business, Enterprise)
- Monthly/Annual toggle with savings indicator
- Feature lists per tier
- "Start Free Trial" buttons linked to signup
3. **Add-Ons Section**
- 3 add-on cards (Domain, SSL, Email)
- Icon, description, and pricing for each
4. **Letzshop Vendor Finder**
- Search input for shop URL
- Real-time lookup via API
- "Claim This Shop" button for unclaimed vendors
5. **Final CTA Section**
- Gradient background
- Strong call to action for trial signup
### 2. Pricing Page (`/pricing`)
**Template:** `app/templates/platform/pricing.html`
Standalone page with:
- Large tier cards
- Monthly/Annual toggle
- Detailed feature lists
- Back to home link
### 3. Find Your Shop (`/find-shop`)
**Template:** `app/templates/platform/find-shop.html`
- URL input with examples
- Real-time Letzshop vendor lookup
- Claim button for unclaimed shops
- Help section with alternatives
### 4. Signup Wizard (`/signup`)
**Template:** `app/templates/platform/signup.html`
**4-Step Flow:**
| Step | Name | Description |
|------|------|-------------|
| 1 | Select Plan | Choose tier + billing period |
| 2 | Claim Shop | Optional Letzshop connection |
| 3 | Create Account | User details + company info |
| 4 | Payment | Stripe card collection |
**URL Parameters:**
- `?tier=professional` - Pre-select tier
- `?annual=true` - Pre-select annual billing
- `?letzshop=my-shop` - Pre-fill Letzshop slug
### 5. Signup Success (`/signup/success`)
**Template:** `app/templates/platform/signup-success.html`
- Success confirmation
- Next steps checklist
- Dashboard link
- Support contact
---
## API Endpoints
All endpoints under `/api/v1/platform/`:
### Pricing Endpoints
```
GET /api/v1/platform/tiers
Returns all public subscription tiers
Response: TierResponse[]
GET /api/v1/platform/tiers/{tier_code}
Returns specific tier by code
Response: TierResponse
GET /api/v1/platform/addons
Returns all active add-on products
Response: AddOnResponse[]
GET /api/v1/platform/pricing
Returns complete pricing info (tiers + addons + trial_days)
Response: PricingResponse
```
### Letzshop Vendor Endpoints
```
GET /api/v1/platform/letzshop-vendors
Query params: ?search=&category=&city=&page=1&limit=20
Returns paginated vendor list (placeholder for future)
Response: LetzshopVendorListResponse
POST /api/v1/platform/letzshop-vendors/lookup
Body: { "url": "letzshop.lu/vendors/my-shop" }
Returns vendor info from URL lookup
Response: LetzshopLookupResponse
GET /api/v1/platform/letzshop-vendors/{slug}
Returns vendor info by slug
Response: LetzshopVendorInfo
```
### Signup Endpoints
```
POST /api/v1/platform/signup/start
Body: { "tier_code": "professional", "is_annual": false }
Creates signup session
Response: { "session_id": "...", "tier_code": "...", "is_annual": false }
POST /api/v1/platform/signup/claim-vendor
Body: { "session_id": "...", "letzshop_slug": "my-shop" }
Claims Letzshop vendor for session
Response: { "session_id": "...", "letzshop_slug": "...", "vendor_name": "..." }
POST /api/v1/platform/signup/create-account
Body: {
"session_id": "...",
"email": "user@example.com",
"password": "securepassword",
"first_name": "John",
"last_name": "Doe",
"company_name": "My Company"
}
Creates User, Company, Vendor, Stripe Customer
Response: { "session_id": "...", "user_id": 1, "vendor_id": 1, "stripe_customer_id": "cus_..." }
POST /api/v1/platform/signup/setup-payment
Body: { "session_id": "..." }
Creates Stripe SetupIntent
Response: { "session_id": "...", "client_secret": "seti_...", "stripe_customer_id": "cus_..." }
POST /api/v1/platform/signup/complete
Body: { "session_id": "...", "setup_intent_id": "seti_..." }
Completes signup, attaches payment method
Response: { "success": true, "vendor_code": "...", "vendor_id": 1, "redirect_url": "...", "trial_ends_at": "..." }
GET /api/v1/platform/signup/session/{session_id}
Returns session status for resuming signup
Response: { "session_id": "...", "step": "...", ... }
```
---
## Database Schema Changes
### Migration: `404b3e2d2865_add_letzshop_vendor_fields_and_trial_tracking`
**Vendor Table:**
```sql
ALTER TABLE vendors ADD COLUMN letzshop_vendor_id VARCHAR(100) UNIQUE;
ALTER TABLE vendors ADD COLUMN letzshop_vendor_slug VARCHAR(200);
CREATE INDEX ix_vendors_letzshop_vendor_id ON vendors(letzshop_vendor_id);
CREATE INDEX ix_vendors_letzshop_vendor_slug ON vendors(letzshop_vendor_slug);
```
**VendorSubscription Table:**
```sql
ALTER TABLE vendor_subscriptions ADD COLUMN card_collected_at DATETIME;
```
### Model Changes
**`models/database/vendor.py`:**
```python
# Letzshop Vendor Identity
letzshop_vendor_id = Column(String(100), unique=True, nullable=True, index=True)
letzshop_vendor_slug = Column(String(200), nullable=True, index=True)
```
**`models/database/subscription.py`:**
```python
# Card collection tracking
card_collected_at = Column(DateTime(timezone=True), nullable=True)
```
### Configuration Change
**`app/core/config.py`:**
```python
stripe_trial_days: int = 30 # Changed from 14 to 30
```
---
## Stripe Integration
### Trial Flow with Card Collection
The signup uses Stripe **SetupIntent** (not PaymentIntent) to collect card details without immediate charge:
```
1. User selects tier → POST /signup/start
└── Creates signup session
2. User claims Letzshop shop (optional) → POST /signup/claim-vendor
└── Links Letzshop vendor to session
3. User creates account → POST /signup/create-account
├── Creates User in database
├── Creates Company in database
├── Creates Vendor in database
├── Creates Stripe Customer
└── Creates VendorSubscription (status: trial)
4. User enters card → POST /signup/setup-payment
└── Creates Stripe SetupIntent
└── Returns client_secret for frontend
5. Frontend confirms card → stripe.confirmCardSetup(client_secret)
└── Validates card (no charge)
6. Signup completes → POST /signup/complete
├── Retrieves SetupIntent
├── Attaches PaymentMethod to Customer
├── Sets as default payment method
├── Records card_collected_at
└── Subscription starts 30-day trial
7. After 30 days → Stripe automatically charges card
```
### New StripeService Methods
**`app/services/stripe_service.py`:**
```python
def create_setup_intent(
self,
customer_id: str,
metadata: dict | None = None,
) -> stripe.SetupIntent:
"""
Create a SetupIntent to collect card without charging.
Used for trial signups where we collect card upfront.
"""
def attach_payment_method_to_customer(
self,
customer_id: str,
payment_method_id: str,
set_as_default: bool = True,
) -> None:
"""
Attach a payment method to customer and set as default.
"""
def create_subscription_with_trial(
self,
customer_id: str,
price_id: str,
trial_days: int = 30,
metadata: dict | None = None,
) -> stripe.Subscription:
"""
Create subscription with trial period.
Card will be charged automatically after trial ends.
"""
def get_setup_intent(self, setup_intent_id: str) -> stripe.SetupIntent:
"""Get a SetupIntent by ID."""
```
---
## File Structure
```
app/
├── api/
│ └── v1/
│ └── platform/
│ ├── __init__.py # Router aggregation
│ ├── pricing.py # Tier & addon endpoints
│ ├── letzshop_vendors.py # Vendor lookup endpoints
│ └── signup.py # Signup flow endpoints
├── routes/
│ └── platform_pages.py # Page routes (/, /pricing, etc.)
├── services/
│ └── stripe_service.py # SetupIntent methods (updated)
└── templates/
└── platform/
├── base.html # Base template (Wizamart branding)
├── homepage-wizamart.html # Marketing homepage
├── pricing.html # Pricing page
├── find-shop.html # Letzshop finder
├── signup.html # Signup wizard
└── signup-success.html # Success page
models/database/
├── vendor.py # letzshop_vendor_id, slug fields
└── subscription.py # card_collected_at field
alembic/versions/
└── 404b3e2d2865_add_letzshop_vendor_fields_and_trial_.py
main.py # Platform routes registered
app/api/main.py # Platform API router added
app/core/config.py # stripe_trial_days = 30
```
---
## Frontend Technology
- **Tailwind CSS** - Utility-first styling
- **Alpine.js** - Reactive components
- **Stripe.js** - Payment form (Stripe Elements)
### JavaScript Components (Embedded)
**Homepage (`homepageData()`):**
- `annual` - Billing toggle state
- `shopUrl` - Letzshop URL input
- `vendorResult` - Lookup result
- `lookupVendor()` - API call for lookup
**Signup Wizard (`signupWizard()`):**
- `currentStep` - Wizard step (1-4)
- `sessionId` - Backend session ID
- `selectedTier` - Selected tier code
- `isAnnual` - Annual billing toggle
- `letzshopUrl/Vendor` - Letzshop claim
- `account` - User form data
- `stripe/cardElement` - Stripe integration
- `startSignup()` - Step 1 submission
- `claimVendor()` - Step 2 submission
- `createAccount()` - Step 3 submission
- `initStripe()` - Initialize Stripe Elements
- `submitPayment()` - Step 4 submission
---
## Configuration Requirements
### Environment Variables
```bash
# Required for payment step
STRIPE_SECRET_KEY=sk_test_...
STRIPE_PUBLISHABLE_KEY=pk_test_...
STRIPE_WEBHOOK_SECRET=whsec_... # For webhook handling
# Trial period (defaults to 30)
STRIPE_TRIAL_DAYS=30
```
### Stripe Dashboard Setup
1. Create Products for each tier (Essential, Professional, Business)
2. Create Prices for monthly and annual billing
3. Configure Customer Portal
4. Set up webhook endpoint for subscription events
---
## Testing
### Manual Testing
1. **Homepage:** Visit `http://localhost:8000/`
2. **Pricing Toggle:** Click Monthly/Annual switch
3. **Vendor Lookup:** Enter a Letzshop URL in finder
4. **Signup Flow:**
- Click "Start Free Trial"
- Select tier
- Skip or enter Letzshop URL
- Fill account form
- Enter test card (4242 4242 4242 4242)
- Complete signup
### Test Cards (Stripe)
| Card | Scenario |
|------|----------|
| 4242 4242 4242 4242 | Success |
| 4000 0000 0000 0002 | Decline |
| 4000 0000 0000 3220 | 3D Secure required |
### API Testing
```bash
# Get pricing
curl http://localhost:8000/api/v1/platform/pricing
# Lookup vendor
curl -X POST http://localhost:8000/api/v1/platform/letzshop-vendors/lookup \
-H "Content-Type: application/json" \
-d '{"url": "letzshop.lu/vendors/test-shop"}'
# Start signup
curl -X POST http://localhost:8000/api/v1/platform/signup/start \
-H "Content-Type: application/json" \
-d '{"tier_code": "professional", "is_annual": false}'
```
---
## Future Enhancements
1. **Letzshop Vendor Cache**
- Periodic sync of Letzshop vendor directory
- Browsable list instead of URL lookup only
2. **Email Verification**
- Verify email before trial starts
- Confirmation email with onboarding links
3. **Referral Program**
- Affiliate/referral codes
- Partner commission tracking
4. **A/B Testing**
- Test different pricing presentations
- Optimize conversion rates
5. **Analytics**
- Track signup funnel drop-off
- Monitor tier selection patterns
6. **Enterprise Contact Form**
- Lead capture for enterprise tier
- Sales team notification