# Helcim Event Ticketing Integration - Implementation Summary

## Overview
Successfully integrated Helcim payment processing with Ghost Guild's event ticketing system to support paid events, member pricing, early bird discounts, and capacity management.

## What Was Built

### 1. Enhanced Event Model (`server/models/event.js`)
Added comprehensive ticket schema with:
- **Member tickets**: Free/discounted pricing for members with circle-specific overrides
- **Public tickets**: Standard pricing with early bird support
- **Capacity management**: Overall event capacity tracking
- **Waitlist system**: Queue management when events sell out
- **Registration tracking**: Enhanced with ticket type, price paid, payment status, and refund info

### 2. Ticket Business Logic (`server/utils/tickets.js`)
Created utility functions for:
- `calculateTicketPrice()` - Determines applicable price based on member status and early bird
- `checkTicketAvailability()` - Real-time availability checking
- `validateTicketPurchase()` - Pre-purchase validation
- `reserveTicket()` - Temporary reservation during checkout (prevents race conditions)
- `releaseTicket()` - Release abandoned reservations
- `completeTicketPurchase()` - Finalize purchase and update counts
- `addToWaitlist()` - Waitlist management
- `formatPrice()` - Consistent price formatting

### 3. API Endpoints (`server/api/events/[id]/tickets/`)
Four new REST endpoints:

#### `GET available.get.js`
- Check ticket availability and pricing for a user
- Returns: ticket type, price, availability, remaining spots
- Supports both authenticated (members) and public users

#### `POST check-eligibility.post.js`
- Verify if user qualifies for member pricing
- Returns: member status and circle information

#### `POST purchase.post.js`
- Complete ticket purchase with Helcim payment
- Validates availability, processes payment, creates registration
- Handles both free (member) and paid (public) tickets

#### `POST reserve.post.js`
- Temporarily reserve ticket during checkout
- Prevents overselling during payment processing
- 10-minute TTL on reservations

### 4. Frontend Components

#### `EventTicketCard.vue`
Reusable ticket display component showing:
- Ticket name and description
- Price with early bird indicator
- Member savings comparison
- Availability status
- Waitlist option when sold out

#### `EventTicketPurchase.vue`
Main ticket purchase flow component:
- Fetches ticket availability on load
- Displays appropriate ticket card
- Registration form (name, email)
- Integrated Helcim payment for paid tickets
- Success/error handling with toast notifications
- Shows "already registered" state

### 5. Enhanced Composable (`app/composables/useHelcimPay.js`)
Added `initializeTicketPayment()` method:
- Ticket-specific payment initialization
- Includes event metadata for tracking
- Uses email as customer code for one-time purchases

### 6. Updated Event Detail Page (`app/pages/events/[id].vue`)
- Detects if event has tickets enabled
- Shows new ticket system OR legacy registration form
- Maintains backward compatibility
- Handles ticket purchase success/error events

### 7. Enhanced Email Templates (`server/utils/resend.js`)
Updated registration confirmation emails to include:
- Ticket type (Member/Public)
- Amount paid
- Transaction ID
- "Member Benefit" callout for free member tickets

## How It Works

### Free Member Event Flow
```
1. Member views event → Sees "Free for Members" ticket
2. Fills in name/email → Click "Complete Registration"
3. System verifies membership → Creates registration
4. Sends confirmation email → Shows success message
```

### Paid Public Event Flow
```
1. Public user views event → Sees ticket price
2. Fills in name/email → Clicks "Pay $XX.XX"
3. Helcim modal opens → User enters payment info
4. Payment processes → System creates registration
5. Sends confirmation with receipt → Shows success
```

### Early Bird Pricing
```
- Before deadline: Shows early bird price + countdown
- After deadline: Automatically switches to regular price
- Calculated server-side for security
```

## Configuration

### Event Setup
To enable ticketing for an event, set in the event document:

```javascript
{
  tickets: {
    enabled: true,
    currency: "CAD",
    member: {
      available: true,
      isFree: true,  // or set price
      name: "Member Ticket",
      description: "Free for Ghost Guild members"
    },
    public: {
      available: true,
      price: 25.00,
      quantity: 50,  // or null for unlimited
      earlyBirdPrice: 20.00,
      earlyBirdDeadline: "2025-11-01T00:00:00Z",
      name: "Public Ticket"
    },
    capacity: {
      total: 75  // Total capacity across all ticket types
    }
  }
}
```

### Circle-Specific Pricing Example
```javascript
{
  tickets: {
    member: {
      isFree: false,  // Not free by default
      price: 15.00,   // Default member price
      circleOverrides: {
        community: {
          isFree: true  // Free for community circle
        },
        founder: {
          price: 10.00  // Discounted for founders
        },
        practitioner: {
          price: 5.00  // Heavily discounted for practitioners
        }
      }
    }
  }
}
```

## Migration Strategy

### Backward Compatibility
- Legacy `pricing` field still supported
- Events without `tickets.enabled` use old registration system
- Existing registrations work with new system

### Converting Events to New System
```javascript
// Old format
{
  pricing: {
    isFree: false,
    publicPrice: 25,
    paymentRequired: true
  }
}

// New format
{
  tickets: {
    enabled: true,
    member: {
      isFree: true
    },
    public: {
      available: true,
      price: 25
    }
  }
}
```

## Testing Checklist

### Member Ticket Flow
- [ ] Member can see free ticket
- [ ] Email pre-fills if logged in
- [ ] Registration completes without payment
- [ ] Confirmation email shows member benefit
- [ ] "Already registered" state shows correctly

### Public Ticket Flow
- [ ] Public user sees correct price
- [ ] Helcim modal opens on submit
- [ ] Payment processes successfully
- [ ] Transaction ID saved to registration
- [ ] Confirmation email includes receipt

### Early Bird Pricing
- [ ] Early bird price shows before deadline
- [ ] Countdown timer displays correctly
- [ ] Regular price shows after deadline
- [ ] Price calculation is server-side

### Capacity Management
- [ ] Ticket count decrements on purchase
- [ ] Sold out message shows when full
- [ ] Waitlist option appears if enabled
- [ ] No overselling (test concurrent purchases)

### Edge Cases
- [ ] Already registered users see status
- [ ] Cancelled events show cancellation message
- [ ] Past events don't allow registration
- [ ] Member-only events gate non-members
- [ ] Payment failures don't create registrations

## Future Enhancements

### Phase 2 Features
1. **Waitlist Notifications**: Auto-email when spots open
2. **Refund Processing**: Handle ticket cancellations with refunds
3. **Ticket Types**: Multiple ticket tiers per event
4. **Group Tickets**: Purchase multiple tickets at once
5. **Promo Codes**: Discount code support
6. **Admin Dashboard**: View sales, export attendee lists

### Phase 3 Features
1. **Recurring Events**: Auto-apply tickets to series
2. **Transfer Tickets**: Allow users to transfer registrations
3. **PDF Tickets**: Generate printable/QR code tickets
4. **Revenue Analytics**: Track ticket sales and revenue
5. **Dynamic Pricing**: Adjust prices based on demand

## Files Created
- `server/utils/tickets.js` (420 lines)
- `server/api/events/[id]/tickets/available.get.js` (150 lines)
- `server/api/events/[id]/tickets/purchase.post.js` (180 lines)
- `server/api/events/[id]/tickets/check-eligibility.post.js` (50 lines)
- `server/api/events/[id]/tickets/reserve.post.js` (80 lines)
- `app/components/EventTicketCard.vue` (195 lines)
- `app/components/EventTicketPurchase.vue` (330 lines)

## Files Modified
- `server/models/event.js` - Enhanced ticket schema + registration fields
- `app/pages/events/[id].vue` - Integrated ticket UI
- `app/composables/useHelcimPay.js` - Added ticket payment method
- `server/utils/resend.js` - Enhanced email with ticket info

## Total Implementation
- **~1,400 lines of code** across 11 files
- **4 new API endpoints**
- **2 new Vue components**
- **10+ utility functions**
- **Fully backward compatible**

## Support
For questions or issues:
- Check Helcim API docs: https://docs.helcim.com
- Review CLAUDE.md for project context
- Test in development with Helcim test credentials

---

**Status**: ✅ Implementation Complete
**Last Updated**: 2025-10-14
**Developer**: Claude (Anthropic)