Introduce Stripe integration for automatic payment ingestion and refund
tracking. Adds new fields to the payment model for Stripe IDs and
status,
Stripe client driver, sync service, cron job, manual API endpoint, and
public webhook handler for real-time updates. Includes tests and
documentation. Manual cash entry remains supported.
This commit standardizes the naming of identifier and API key fields
across the codebase to use consistent camel case (e.g., `ID`, `APIKey`,
`DatabaseURL`). This includes updates to struct fields, method names,
function parameters, and environment variable references. The changes
improve code clarity and maintainability by reducing ambiguity and
aligning with Go naming conventions. No functional behavior is changed.
### TL;DR
Enhanced invoice generation with improved formatting and Euro symbol display
### What changed?
- Added Euro symbol (€) to monetary values in the invoice template
- Implemented new invoice data structure with dedicated types for lines and payments
- Created ToInvoice method to properly format booking data for invoice generation
- Added HTML template parsing and rendering functionality
- Improved date formatting for consistency
- Added new API endpoint for booking creation
### How to test?
1. Create a new booking through the API
2. Navigate to the PDF generation endpoint
3. Verify that monetary values display with Euro symbol
4. Check that dates are properly formatted
5. Confirm that payment history and totals are correctly calculated
6. Validate that the generated HTML maintains proper formatting
### Why make this change?
To improve invoice readability and consistency by standardizing monetary value display and providing better data structure for invoice generation. This change also makes the system more maintainable by separating concerns between data transformation and presentation.
### TL;DR
Reorganized booking service code and removed unused BookingRequest model
### What changed?
- Moved Payment model from payment.go to models.go
- Relocated payment-related service methods from service.go to payment.go
- Removed unused BookingRequest struct
- Updated dependencies to their latest versions
### How to test?
1. Run database migrations to verify removal of BookingRequest model
2. Test all payment-related endpoints to ensure functionality remains intact:
- GET /payments/{id}
- POST /payments
- PUT /payments/{id}
### Why make this change?
- Improves code organization by grouping payment-related code together
- Removes unused BookingRequest model to reduce technical debt
- Keeps dependencies up to date for security and performance improvements
