Introduce slog-based structured logging throughout the booking service
and
server handlers. Add configurable log level via LOG_LEVEL environment
variable. Replace legacy log usage with slog and propagate logger to
booking service for improved observability.
### TL;DR
Implemented embedded file system for static assets using Go's `embed` package.
### What changed?
- Created a new `assets.go` file to define an embedded filesystem for static assets
- Moved all static assets (HTML, icons, images, JS) under a nested `assets` directory
- Updated PDF generation to use the embedded filesystem when parsing HTML templates
- Modified main application to use the embedded filesystem for serving static files
- Added logging statements for invoice generation
### How to test?
1. Run the application and verify static assets are served correctly
2. Generate a PDF invoice and confirm it renders properly
3. Check that all HTML error pages (400, 401, 403, 404, 500) are accessible
4. Verify images and icons load correctly throughout the application
### Why make this change?
Using an embedded filesystem ensures all static assets are compiled into the binary, making deployment simpler and more reliable. This eliminates the need to manage separate asset files and ensures the application has all required resources available at runtime.
### 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
