Hotel Raxa - Advanced Booking System Implementation

🏨 Hotel Booking Enhancements:
- Implemented Eagle Booking Advanced Pricing add-on
- Added Booking.com-style rate management system
- Created professional calendar interface for pricing
- Integrated deals and discounts functionality

💰 Advanced Pricing Features:
- Dynamic pricing models (per room, per person, per adult)
- Base rates, adult rates, and child rates management
- Length of stay discounts and early bird deals
- Mobile rates and secret deals implementation
- Seasonal promotions and flash sales

📅 Availability Management:
- Real-time availability tracking
- Stop sell and restriction controls
- Closed to arrival/departure functionality
- Minimum/maximum stay requirements
- Automatic sold-out management

💳 Payment Integration:
- Maintained Redsys payment gateway integration
- Seamless integration with existing Eagle Booking
- No modifications to core Eagle Booking plugin

🛠️ Technical Implementation:
- Custom database tables for advanced pricing
- WordPress hooks and filters integration
- AJAX-powered admin interface
- Data migration from existing Eagle Booking
- Professional calendar view for revenue management

📊 Admin Interface:
- Booking.com-style management dashboard
- Visual rate and availability calendar
- Bulk operations for date ranges
- Statistics and analytics dashboard
- Modal dialogs for quick editing

🔧 Code Quality:
- WordPress coding standards compliance
- Secure database operations with prepared statements
- Proper input validation and sanitization
- Error handling and logging
- Responsive admin interface

🤖 Generated with Claude Code (https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

wp-admin/includes/class-wp-ajax-upgrader-skin.php

@@ -0,0 +1,159 @@
+<?php
+/**
+ * Upgrader API: WP_Ajax_Upgrader_Skin class
+ *
+ * @package WordPress
+ * @subpackage Upgrader
+ * @since 4.6.0
+ */
+
+/**
+ * Upgrader Skin for Ajax WordPress upgrades.
+ *
+ * This skin is designed to be used for Ajax updates.
+ *
+ * @since 4.6.0
+ *
+ * @see Automatic_Upgrader_Skin
+ */
+class WP_Ajax_Upgrader_Skin extends Automatic_Upgrader_Skin {
+
+	/**
+	 * Plugin info.
+	 *
+	 * The Plugin_Upgrader::bulk_upgrade() method will fill this in
+	 * with info retrieved from the get_plugin_data() function.
+	 *
+	 * @var array Plugin data. Values will be empty if not supplied by the plugin.
+	 */
+	public $plugin_info = array();
+
+	/**
+	 * Theme info.
+	 *
+	 * The Theme_Upgrader::bulk_upgrade() method will fill this in
+	 * with info retrieved from the Theme_Upgrader::theme_info() method,
+	 * which in turn calls the wp_get_theme() function.
+	 *
+	 * @var WP_Theme|false The theme's info object, or false.
+	 */
+	public $theme_info = false;
+
+	/**
+	 * Holds the WP_Error object.
+	 *
+	 * @since 4.6.0
+	 *
+	 * @var null|WP_Error
+	 */
+	protected $errors = null;
+
+	/**
+	 * Constructor.
+	 *
+	 * Sets up the WordPress Ajax upgrader skin.
+	 *
+	 * @since 4.6.0
+	 *
+	 * @see WP_Upgrader_Skin::__construct()
+	 *
+	 * @param array $args Optional. The WordPress Ajax upgrader skin arguments to
+	 *                    override default options. See WP_Upgrader_Skin::__construct().
+	 *                    Default empty array.
+	 */
+	public function __construct( $args = array() ) {
+		parent::__construct( $args );
+
+		$this->errors = new WP_Error();
+	}
+
+	/**
+	 * Retrieves the list of errors.
+	 *
+	 * @since 4.6.0
+	 *
+	 * @return WP_Error Errors during an upgrade.
+	 */
+	public function get_errors() {
+		return $this->errors;
+	}
+
+	/**
+	 * Retrieves a string for error messages.
+	 *
+	 * @since 4.6.0
+	 *
+	 * @return string Error messages during an upgrade.
+	 */
+	public function get_error_messages() {
+		$messages = array();
+
+		foreach ( $this->errors->get_error_codes() as $error_code ) {
+			$error_data = $this->errors->get_error_data( $error_code );
+
+			if ( $error_data && is_string( $error_data ) ) {
+				$messages[] = $this->errors->get_error_message( $error_code ) . ' ' . esc_html( strip_tags( $error_data ) );
+			} else {
+				$messages[] = $this->errors->get_error_message( $error_code );
+			}
+		}
+
+		return implode( ', ', $messages );
+	}
+
+	/**
+	 * Stores an error message about the upgrade.
+	 *
+	 * @since 4.6.0
+	 * @since 5.3.0 Formalized the existing `...$args` parameter by adding it
+	 *              to the function signature.
+	 *
+	 * @param string|WP_Error $errors  Errors.
+	 * @param mixed           ...$args Optional text replacements.
+	 */
+	public function error( $errors, ...$args ) {
+		if ( is_string( $errors ) ) {
+			$string = $errors;
+			if ( ! empty( $this->upgrader->strings[ $string ] ) ) {
+				$string = $this->upgrader->strings[ $string ];
+			}
+
+			if ( str_contains( $string, '%' ) ) {
+				if ( ! empty( $args ) ) {
+					$string = vsprintf( $string, $args );
+				}
+			}
+
+			// Count existing errors to generate a unique error code.
+			$errors_count = count( $this->errors->get_error_codes() );
+			$this->errors->add( 'unknown_upgrade_error_' . ( $errors_count + 1 ), $string );
+		} elseif ( is_wp_error( $errors ) ) {
+			foreach ( $errors->get_error_codes() as $error_code ) {
+				$this->errors->add( $error_code, $errors->get_error_message( $error_code ), $errors->get_error_data( $error_code ) );
+			}
+		}
+
+		parent::error( $errors, ...$args );
+	}
+
+	/**
+	 * Stores a message about the upgrade.
+	 *
+	 * @since 4.6.0
+	 * @since 5.3.0 Formalized the existing `...$args` parameter by adding it
+	 *              to the function signature.
+	 * @since 5.9.0 Renamed `$data` to `$feedback` for PHP 8 named parameter support.
+	 *
+	 * @param string|array|WP_Error $feedback Message data.
+	 * @param mixed                 ...$args  Optional text replacements.
+	 */
+	public function feedback( $feedback, ...$args ) {
+		if ( is_wp_error( $feedback ) ) {
+			foreach ( $feedback->get_error_codes() as $error_code ) {
+				$this->errors->add( $error_code, $feedback->get_error_message( $error_code ), $feedback->get_error_data( $error_code ) );
+			}
+		}
+
+		parent::feedback( $feedback, ...$args );
+	}
+}