Technology Stack

Analysis Date: 2026-05-05

Languages

PHP 7.4+ — all server-side plugin logic (Requires PHP: 7.4 in plugin header)
JavaScript (ES5/IIFE) — frontend calendar + booking form (calendar.js), admin panel JS (admin.js)
SCSS — frontend calendar styles (source at frontend/assets/css/calendar.scss; must be manually compiled)
SQL — custom table queries via $wpdb->prepare()

Runtime

WordPress 6.0+ (Requires at least: 6.0)
Elementor Pro — optional; plugin checks class_exists('\Elementor\Plugin') and degrades gracefully
MySQL — custom table + WordPress standard tables

Key Dependencies

Dependency	Version	How Loaded
FullCalendar	6.1.10	jsDelivr CDN
FullCalendar Polish locale	6.1.10	jsDelivr CDN
jQuery	WP bundled	WordPress core
Google Calendar API v3	—	Native HTTP (no SDK)

CDN URLs:

https://cdn.jsdelivr.net/npm/fullcalendar@6.1.10/index.global.min.js
https://cdn.jsdelivr.net/npm/fullcalendar@6.1.10/index.global.min.css
https://cdn.jsdelivr.net/npm/@fullcalendar/core@6.1.10/locales/pl.global.min.js

Plugin Constants

Defined in yacht-booking-system.php (lines 23–27):

YACHT_BOOKING_VERSION        = '1.0.0'
YACHT_BOOKING_PLUGIN_FILE    = __FILE__
YACHT_BOOKING_PLUGIN_DIR     = plugin_dir_path(__FILE__)
YACHT_BOOKING_PLUGIN_URL     = plugin_dir_url(__FILE__)
YACHT_BOOKING_PLUGIN_BASENAME = plugin_basename(__FILE__)

Autoloading

Custom spl_autoload_register (lines 32–56, yacht-booking-system.php):

Namespace prefix: YachtBooking\
Maps to: YACHT_BOOKING_PLUGIN_DIR . 'includes/'
Rule: YachtBooking\Foo_Bar → includes/class-foo-bar.php
Only covers includes/ — integration and API classes loaded via explicit require_once

Configuration Storage

No .env file — all runtime config in wp_options
Key options: yacht_booking_gcal_credentials, yacht_booking_gcal_tokens, yacht_booking_gcal_calendar_id, yacht_booking_gcal_sync_enabled, yacht_booking_default_status, yacht_booking_enable_notifications

Build Pipeline

None. No Composer, no npm, no webpack/vite/esbuild. Assets are static hand-authored files deployed via FTP (ftp-kr VS Code extension, config: .vscode/ftp-kr.json).

Platform Requirements

Dev: VS Code + ftp-kr, PHP 7.4+ CLI (php -l <file> for syntax checks)
Production: PHP 7.4+, MySQL, WordPress 6.0+, shared hosting or VPS
Note: OAuth redirect URI hardcoded to https://jachty.pagedev.pl — staging/local OAuth will fail

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