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wp-content/plugins/yacht-booking-system/includes/class-installer.php

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+<?php
+/**
+ * Plugin Installer Class
+ *
+ * @package YachtBooking
+ */
+
+namespace YachtBooking;
+
+// Exit if accessed directly
+if ( ! defined( 'ABSPATH' ) ) {
+	exit;
+}
+
+/**
+ * Installer class - handles plugin installation and database setup
+ */
+class Installer {
+
+	/**
+	 * Run installation
+	 */
+	public function install() {
+		$this->create_tables();
+		$this->create_options();
+		$this->set_version();
+	}
+
+	/**
+	 * Create custom database tables
+	 */
+	private function create_tables() {
+		global $wpdb;
+
+		$charset_collate = $wpdb->get_charset_collate();
+		$table_name      = $wpdb->prefix . 'yacht_availability';
+
+		$sql = "CREATE TABLE $table_name (
+			id bigint(20) UNSIGNED NOT NULL AUTO_INCREMENT,
+			yacht_id bigint(20) UNSIGNED NOT NULL,
+			date date NOT NULL,
+			status varchar(20) NOT NULL DEFAULT 'available',
+			booking_id bigint(20) UNSIGNED NULL,
+			created_at datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
+			updated_at datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+			PRIMARY KEY  (id),
+			UNIQUE KEY yacht_date (yacht_id, date),
+			KEY yacht_id (yacht_id),
+			KEY date (date),
+			KEY status (status),
+			KEY booking_id (booking_id)
+		) $charset_collate;";
+
+		require_once ABSPATH . 'wp-admin/includes/upgrade.php';
+		dbDelta( $sql );
+	}
+
+	/**
+	 * Create default plugin options
+	 */
+	private function create_options() {
+		$options = array(
+			'yacht_booking_default_status'        => 'pending',
+			'yacht_booking_email_from_name'       => get_bloginfo( 'name' ),
+			'yacht_booking_email_from'            => get_bloginfo( 'admin_email' ),
+			'yacht_booking_date_format'           => 'Y-m-d',
+			'yacht_booking_currency_symbol'       => 'zł',
+			'yacht_booking_terms_page_id'         => 0,
+			'yacht_booking_enable_notifications'  => 'yes',
+			'yacht_booking_gcal_sync_enabled'     => 'no',
+		);
+
+		foreach ( $options as $key => $value ) {
+			if ( false === get_option( $key ) ) {
+				add_option( $key, $value );
+			}
+		}
+	}
+
+	/**
+	 * Set plugin version
+	 */
+	private function set_version() {
+		update_option( 'yacht_booking_version', YACHT_BOOKING_VERSION );
+		update_option( 'yacht_booking_installed_at', current_time( 'mysql' ) );
+	}
+}