# Invoice Enhancement Summary
## Overview
Successfully enhanced the Invoice entity to work comprehensively with the Booking system, supporting invoicing for accommodations, spots, services, packages, and additional products.
## Files Created/Modified
### 1. Database Migration
**File:** `database/migrations/2025_01_23_084635_enhance_invoices_for_bookings.php`
**Enhancements to `invoices` table:**
- Added `booking_id` foreign key relationship
- Added `company_id` and `workspace_id` for multi-tenancy
- Added `client_id` for direct client relationship
- Added `invoice_number` with auto-generation (INV-YYYYMMDD-XXXXXX)
- Added `invoice_type` enum (proforma, final, credit_note, debit_note)
- Enhanced pricing fields: `subtotal`, `tax_rate`, `tax_amount`, `service_fee`, `discount_amount`, `discount_type`
- Added `payment_status` enum (unpaid, partially_paid, paid, refunded, cancelled)
- Added payment tracking: `payment_method`, `payment_date`, `paid_at`
- Added fiscal fields: `fiscal_receipt_number`, `fiscal_status`, `fiscal_printed_at`
- Added `metadata` JSON field for flexible data storage
- Added cancellation tracking: `cancelled_at`, `cancellation_reason`
- Added comprehensive indexes for performance
**Enhancements to `invoices_items` table:**
- Added polymorphic relationship: `itemable_type`, `itemable_id`
- Added `category` enum (accommodation, spot, service, package, product, fee, tax, discount, other)
- Enhanced pricing: `unit_price`, `tax_rate`, `tax_amount`, `discount_amount`
- Added duration tracking: `duration_type`, `duration_value`, `start_date`, `end_date`
- Added indexes for polymorphic queries
### 2. Enhanced Invoice Model
**File:** `app/Models/Invoice.php`
**Features Added:**
- Auto-generation of unique invoice numbers
- Auto-generation of UUIDs
- Comprehensive relationships:
- `booking()` - Link to booking
- `client()` - Direct client relationship
- `company()` and `workspace()` - Multi-tenancy
- `reservation()` - Legacy support
- Category-specific item relationships (accommodationItems, spotItems, serviceItems, etc.)
- Query scopes:
- `paid()`, `unpaid()`, `partiallyPaid()`, `overdue()`
- `byType()`, `proforma()`, `final()`
- Helper methods:
- `isPaid()`, `isUnpaid()`, `isPartiallyPaid()`, `isOverdue()`
- `getRemainingAmount()`
- `markAsPaid()`, `addPayment()`, `cancel()`
- `recalculateTotals()` - Auto-calculate from items
- Proper type casting for all fields
- Soft deletes support
### 3. Enhanced InvoiceItem Model
**File:** `app/Models/InvoiceItem.php`
**Features Added:**
- Polymorphic `itemable()` relationship to any bookable entity
- Auto-calculation of totals on create/update
- Category-based scopes (accommodation, spots, services, packages, products, fees)
- Helper methods:
- `calculateTotals()` - Smart calculation with discounts and taxes
- `getSubtotal()`, `getTotalWithoutTax()`
- `getDurationInDays()`, `getDurationInNights()`
- Static factory methods for easy creation:
- `createFromVenueObject()` - For rooms, houses, apartments
- `createFromVenueSpot()` - For beach spots, parking
- `createFromVenueService()` - For services
- `createFromVenuePackage()` - For service packages
- `createFromProduct()` - For minibar, insurance, etc.
- Comprehensive type casting
### 4. InvoiceService Class
**File:** `app/Services/InvoiceService.php`
**Core Methods:**
- `createFromBooking()` - Main method to generate invoice from booking
- Automatically includes all venue objects, spots, services, packages
- Handles service fees
- Calculates totals
- Supports custom options
- `createProformaFromBooking()` - Generate draft/proforma invoice
- `convertProformaToFinal()` - Convert proforma to final invoice
- `addProductToInvoice()` - Add minibar, insurance, damage fees, etc.
- `addCustomFee()` - Add cleaning fees, late checkout fees, etc.
- `addDiscount()` - Add fixed amount discount
- `applyPercentageDiscount()` - Add percentage-based discount
- `createCreditNote()` - Generate credit notes for refunds
- `getTaxRate()` - Customizable tax calculation (override for custom logic)
**Protected Helper Methods:**
- `addVenueObjectsToInvoice()` - Process accommodations
- `addVenueSpotsToInvoice()` - Process spots
- `addServicesToInvoice()` - Process services
- `addPackagesToInvoice()` - Process packages
- `addServiceFee()` - Add platform fees
### 5. Documentation
**File:** `INVOICE_BOOKING_INTEGRATION.md`
Comprehensive guide including:
- Database schema documentation
- 10+ usage examples
- Controller integration examples
- Filament resource integration
- Best practices
- Migration instructions
- Tax configuration guide
- Fiscal receipt integration notes
## Key Features
### 1. Comprehensive Booking Integration
- Automatically generates invoices from bookings
- Includes all booking components:
- Venue objects (rooms, houses, apartments)
- Venue spots (beach spots, parking)
- Services (medical, legal, beauty)
- Packages (service bundles)
- Tracks duration and date ranges
- Preserves booking relationships
### 2. Flexible Product Management
- Add additional products after invoice creation
- Support for:
- Minibar consumption
- Insurance fees
- Damage charges
- Late checkout fees
- Cleaning fees
- Any custom products
- Polymorphic relationships for flexibility
### 3. Advanced Payment Tracking
- Multiple payment statuses
- Partial payment support
- Payment method tracking
- Payment date recording
- Overdue invoice detection
- Remaining balance calculation
### 4. Invoice Types
- **Proforma** - Draft invoices for quotes
- **Final** - Official invoices
- **Credit Note** - For refunds/returns
- **Debit Note** - For additional charges
### 5. Automatic Calculations
- Auto-calculate subtotals
- Apply discounts (percentage or fixed)
- Calculate taxes (configurable rates)
- Add service fees
- Recalculate on item changes
- Support for multiple currencies
### 6. Category-Based Organization
- Items organized by category
- Easy filtering and display
- Separate queries for:
- Accommodations
- Spots
- Services
- Packages
- Products
- Fees
- Taxes
- Discounts
### 7. Duration Tracking
- Track nights for accommodations
- Track days for spots
- Track hours for services
- Track sessions for appointments
- Store start and end dates
- Calculate duration automatically
### 8. Multi-Tenancy Support
- Company-level invoicing
- Workspace-level invoicing
- Proper scoping and filtering
- Isolated data per tenant
### 9. Fiscal Integration Ready
- Fiscal receipt number storage
- Fiscal status tracking
- Print timestamp recording
- Metadata for fiscal requirements
### 10. Developer-Friendly
- Fluent API design
- Type-safe methods
- Comprehensive documentation
- Factory methods for easy creation
- Query scopes for common filters
- Helper methods for calculations
## Usage Example
```php
use App\Services\InvoiceService;
use App\Models\Booking;
use App\Models\Product;
$invoiceService = new InvoiceService();
$booking = Booking::find(1);
// Create invoice from booking (includes all booking items)
$invoice = $invoiceService->createFromBooking($booking);
// Add minibar charges
$minibar = Product::where('name', 'Minibar')->first();
$invoiceService->addProductToInvoice($invoice, $minibar, [
'quantity' => 3,
'price' => 15.00,
]);
// Add cleaning fee
$invoiceService->addCustomFee($invoice, 'Cleaning Fee', 30.00);
// Apply discount
$invoiceService->applyPercentageDiscount($invoice, 10, 'Loyalty discount');
// Record payment
$invoice->addPayment(100.00);
// Check status
if ($invoice->isPartiallyPaid()) {
$remaining = $invoice->getRemainingAmount();
echo "Remaining: €{$remaining}";
}
```
## Migration Steps
1. **Run the migration:**
```bash
php artisan migrate
```
2. **Test the integration:**
```bash
php artisan tinker
```
```php
$booking = Booking::first();
$service = app(InvoiceService::class);
$invoice = $service->createFromBooking($booking);
```
3. **Update existing code** to use the new InvoiceService class
4. **Configure tax rates** by overriding `getTaxRate()` in InvoiceService
## Benefits
✅ **Automated Invoice Generation** - Create complete invoices from bookings with one method call
✅ **Flexible Product Management** - Easily add minibar, insurance, fees after booking
✅ **Accurate Calculations** - Automatic subtotal, tax, discount calculations
✅ **Payment Tracking** - Track partial payments, overdue invoices
✅ **Multiple Invoice Types** - Proforma, final, credit notes
✅ **Category Organization** - Easy filtering and display by item type
✅ **Duration Tracking** - Proper handling of nights, days, hours
✅ **Multi-Tenancy** - Company and workspace isolation
✅ **Fiscal Ready** - Fields for fiscal printer integration
✅ **Developer Friendly** - Clean API, comprehensive documentation
## Next Steps
1. **Integrate with Filament Resources** - Add invoice generation actions to BookingResource
2. **Create Invoice PDF Templates** - Design professional invoice layouts
3. **Implement Email Notifications** - Send invoices to clients automatically
4. **Add Fiscal Printer Integration** - Connect to fiscal receipt printers
5. **Create Invoice Reports** - Build analytics and reporting dashboards
6. **Implement Payment Gateway** - Connect to payment processors
7. **Add Invoice Templates** - Support multiple invoice designs
8. **Implement Recurring Invoices** - For subscription-based bookings
## Support
For questions or issues:
- Review `INVOICE_BOOKING_INTEGRATION.md` for detailed usage examples
- Check the InvoiceService class for available methods
- Examine the migration file for database schema details
- Test with sample bookings in tinker