<?php
/**
 * Admin Class
 *
 * @package YachtBooking
 */

namespace YachtBooking;

// Exit if accessed directly
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Admin class - handles admin panel functionality
 */
class Admin {

	/**
	 * Single instance
	 *
	 * @var Admin
	 */
	private static $instance = null;

	/**
	 * Get instance
	 *
	 * @return Admin
	 */
	public static function get_instance() {
		if ( null === self::$instance ) {
			self::$instance = new self();
		}
		return self::$instance;
	}

	/**
	 * Constructor
	 */
	private function __construct() {
		add_action( 'admin_menu', array( $this, 'register_admin_menu' ), 9 );
		add_action( 'admin_init', array( $this, 'process_bulk_actions' ) );
		add_action( 'admin_init', array( $this, 'process_single_actions' ) );
		add_action( 'admin_init', array( $this, 'process_yacht_save' ) );
		add_action( 'admin_init', array( $this, 'process_booking_actions' ) );
		add_action( 'admin_init', array( $this, 'process_settings_save' ) );
		add_action( 'admin_init', array( $this, 'process_export_download' ) );
		add_action( 'yacht_booking_status_changed', array( $this, 'send_customer_notification' ), 10, 2 );
		add_action( 'admin_notices', array( $this, 'display_admin_notices' ) );
	}

	/**
	 * Process settings save (runs on admin_init BEFORE any output)
	 */
	public function process_settings_save() {
		// Only process on settings page
		if ( ! isset( $_GET['page'] ) || $_GET['page'] !== 'yacht-bookings-settings' ) {
			return;
		}

		if ( ! current_user_can( 'yacht_booking_manage_settings' ) ) {
			return;
		}

		// Handle general settings save
		if ( isset( $_POST['yacht_booking_save_settings'] ) ) {
			check_admin_referer( 'yacht_booking_save_settings' );
			$this->save_settings();
		}

		// Handle email templates save.
		if ( isset( $_POST['yacht_booking_save_email_templates'] ) ) {
			check_admin_referer( 'yacht_booking_save_email_templates' );
			$this->save_email_templates();
		}

		// Handle reset email templates.
		if ( isset( $_POST['yacht_booking_reset_email_templates'] ) ) {
			check_admin_referer( 'yacht_booking_save_email_templates' );
			Email_Templates::reset_templates();
			wp_safe_redirect( admin_url( 'admin.php?page=yacht-bookings-settings&tab=email-templates&templates_reset=1' ) );
			exit;
		}

		// Handle global iCal settings save.
		if ( isset( $_POST['yacht_booking_save_global_ical'] ) ) {
			check_admin_referer( 'yacht_booking_save_global_ical' );
			$import_url = isset( $_POST['global_ical_import_url'] ) ? esc_url_raw( wp_unslash( $_POST['global_ical_import_url'] ) ) : '';
			update_option( 'yacht_booking_global_ical_import_url', $import_url );

			$sync_mode = isset( $_POST['ical_sync_mode'] ) ? sanitize_text_field( wp_unslash( $_POST['ical_sync_mode'] ) ) : 'per_yacht';
			if ( ! in_array( $sync_mode, array( 'per_yacht', 'global' ), true ) ) {
				$sync_mode = 'per_yacht';
			}
			update_option( 'yacht_booking_ical_sync_mode', $sync_mode );

			wp_safe_redirect( admin_url( 'admin.php?page=yacht-bookings-settings&tab=google-calendar&global_ical_saved=1' ) );
			exit;
		}

		// Handle global iCal token regeneration.
		if ( isset( $_POST['yacht_booking_regenerate_global_ical_token'] ) ) {
			check_admin_referer( 'yacht_booking_regenerate_global_ical_token' );
			\YachtBooking\Integrations\ICal\ICal_Feed::regenerate_global_token();
			wp_safe_redirect( admin_url( 'admin.php?page=yacht-bookings-settings&tab=google-calendar&token_regenerated=1' ) );
			exit;
		}

		// Handle global iCal manual import trigger.
		if ( isset( $_POST['yacht_booking_run_global_ical_import'] ) ) {
			check_admin_referer( 'yacht_booking_run_global_ical_import' );
			$result = \YachtBooking\Integrations\ICal\ICal_Import::run_global_import();
			$arg    = $result ? 'global_import_done=1' : 'global_import_failed=1';
			wp_safe_redirect( admin_url( 'admin.php?page=yacht-bookings-settings&tab=google-calendar&' . $arg ) );
			exit;
		}
	}

	/**
	 * Display admin notices
	 */
	public function display_admin_notices() {
		// Only show on settings page
		if ( ! isset( $_GET['page'] ) || $_GET['page'] !== 'yacht-bookings-settings' ) {
			return;
		}

		// Success: Settings saved
		if ( isset( $_GET['saved'] ) ) {
			?>
			<div class="notice notice-success is-dismissible">
				<p><strong><?php esc_html_e( 'Ustawienia zostały zapisane pomyślnie!', 'yacht-booking' ); ?></strong></p>
			</div>
			<?php
		}

		// Success: Email templates saved.
		if ( isset( $_GET['templates_saved'] ) ) {
			?>
			<div class="notice notice-success is-dismissible">
				<p><strong><?php esc_html_e( 'Szablony email zostały zapisane.', 'yacht-booking' ); ?></strong></p>
			</div>
			<?php
		}

		// Success: Email templates reset.
		if ( isset( $_GET['templates_reset'] ) ) {
			?>
			<div class="notice notice-success is-dismissible">
				<p><strong><?php esc_html_e( 'Szablony email zostały zresetowane do domyślnych.', 'yacht-booking' ); ?></strong></p>
			</div>
			<?php
		}

		// Error
		if ( isset( $_GET['error'] ) ) {
			?>
			<div class="notice notice-error is-dismissible">
				<p><strong><?php esc_html_e( 'Wystąpił błąd. Spróbuj ponownie.', 'yacht-booking' ); ?></strong></p>
			</div>
			<?php
		}

		if ( isset( $_GET['global_ical_saved'] ) ) {
			?>
			<div class="notice notice-success is-dismissible">
				<p><strong><?php esc_html_e( 'Globalne ustawienia iCal zostały zapisane.', 'yacht-booking' ); ?></strong></p>
			</div>
			<?php
		}

		if ( isset( $_GET['token_regenerated'] ) ) {
			?>
			<div class="notice notice-success is-dismissible">
				<p><strong><?php esc_html_e( 'Wygenerowano nowy token globalnego feed iCal. Poprzedni URL został unieważniony — zaktualizuj subskrypcję w Google Calendar.', 'yacht-booking' ); ?></strong></p>
			</div>
			<?php
		}

		if ( isset( $_GET['global_import_done'] ) ) {
			?>
			<div class="notice notice-success is-dismissible">
				<p><strong><?php esc_html_e( 'Globalny import iCal wykonany. Sprawdź listę rezerwacji.', 'yacht-booking' ); ?></strong></p>
			</div>
			<?php
		}

		if ( isset( $_GET['global_import_failed'] ) ) {
			?>
			<div class="notice notice-error is-dismissible">
				<p><strong><?php esc_html_e( 'Globalny import iCal nie powiódł się. Sprawdź czy URL jest poprawny i logi serwera.', 'yacht-booking' ); ?></strong></p>
			</div>
			<?php
		}
	}

	/**
	 * Register admin menu
	 */
	public function register_admin_menu() {
		// Main menu page
		add_menu_page(
			__( 'Rezerwacje Jachtów', 'yacht-booking' ),
			__( 'Rezerwacje Jachtów', 'yacht-booking' ),
			'yacht_booking_manage_yachts',
			'yacht-bookings',
			array( $this, 'render_yachts_page' ),
			'dashicons-palmtree',
			30
		);

		// Submenu: Yachts (lista)
		add_submenu_page(
			'yacht-bookings',
			__( 'Wszystkie Jachty', 'yacht-booking' ),
			__( 'Wszystkie Jachty', 'yacht-booking' ),
			'yacht_booking_manage_yachts',
			'yacht-bookings',
			array( $this, 'render_yachts_page' )
		);

		// Submenu: Add New Yacht
		add_submenu_page(
			'yacht-bookings',
			__( 'Dodaj Jacht', 'yacht-booking' ),
			__( 'Dodaj Jacht', 'yacht-booking' ),
			'yacht_booking_manage_yachts',
			'yacht-bookings-add-yacht',
			array( $this, 'render_add_yacht_page' )
		);

		// Submenu: Bookings
		add_submenu_page(
			'yacht-bookings',
			__( 'Wszystkie Rezerwacje', 'yacht-booking' ),
			__( 'Rezerwacje', 'yacht-booking' ),
			'yacht_booking_manage_bookings',
			'yacht-bookings-list',
			array( $this, 'render_bookings_page' )
		);

		// Submenu: Settings
		add_submenu_page(
			'yacht-bookings',
			__( 'Ustawienia', 'yacht-booking' ),
			__( 'Ustawienia', 'yacht-booking' ),
			'yacht_booking_manage_settings',
			'yacht-bookings-settings',
			array( $this, 'render_settings_page' )
		);

		// Submenu: Inquiries
		add_submenu_page(
			'yacht-bookings',
			__( 'Zapytania', 'yacht-booking' ),
			__( 'Zapytania', 'yacht-booking' ),
			'yacht_booking_manage_bookings',
			'yacht-inquiries',
			array( $this, 'render_inquiries_page' )
		);

		// Submenu: Export CSV.
		add_submenu_page(
			'yacht-bookings',
			__( 'Eksport CSV', 'yacht-booking' ),
			__( 'Eksport CSV', 'yacht-booking' ),
			'yacht_booking_manage_bookings',
			'yacht-bookings-export',
			array( $this, 'render_export_page' )
		);
	}

	/**
	 * Process bulk actions
	 */
	public function process_bulk_actions() {
		// Check if we're on the yacht list page
		if ( ! isset( $_GET['page'] ) || $_GET['page'] !== 'yacht-bookings' ) {
			return;
		}

		if ( ! current_user_can( 'yacht_booking_manage_yachts' ) ) {
			return;
		}

		// Check for bulk delete
		if ( isset( $_POST['action'] ) && $_POST['action'] === 'delete' && isset( $_POST['yacht'] ) ) {
			check_admin_referer( 'bulk-yachts' );

			$yacht_ids = array_map( 'intval', $_POST['yacht'] );
			$deleted   = 0;

			foreach ( $yacht_ids as $yacht_id ) {
				if ( $this->delete_yacht( $yacht_id ) ) {
					$deleted++;
				}
			}

			// Redirect with success message
			$redirect_url = add_query_arg(
				array(
					'page'    => 'yacht-bookings',
					'deleted' => $deleted,
				),
				admin_url( 'admin.php' )
			);
			wp_safe_redirect( $redirect_url );
			exit;
		}
	}

	/**
	 * Process single actions
	 */
	public function process_single_actions() {
		// Check for single yacht delete
		if ( isset( $_GET['action'] ) && $_GET['action'] === 'delete' && isset( $_GET['yacht'] ) ) {
			if ( ! current_user_can( 'yacht_booking_manage_yachts' ) ) {
				return;
			}

			$yacht_id = (int) $_GET['yacht'];

			check_admin_referer( 'delete_yacht_' . $yacht_id );

			if ( $this->delete_yacht( $yacht_id ) ) {
				$redirect_url = add_query_arg(
					array(
						'page'    => 'yacht-bookings',
						'deleted' => 1,
					),
					admin_url( 'admin.php' )
				);
				wp_safe_redirect( $redirect_url );
				exit;
			}
		}
	}

	/**
	 * Delete yacht and cascade delete bookings
	 *
	 * @param int $yacht_id Yacht ID.
	 * @return bool
	 */
	private function delete_yacht( $yacht_id ) {
		// Get all bookings for this yacht
		$bookings = get_posts(
			array(
				'post_type'      => 'yacht_booking',
				'posts_per_page' => -1,
				'meta_query'     => array(
					array(
						'key'   => '_booking_yacht_id',
						'value' => $yacht_id,
					),
				),
				'fields'         => 'ids',
			)
		);

		// Delete all bookings
		foreach ( $bookings as $booking_id ) {
			Availability::clear_booking_availability( $booking_id );
			wp_delete_post( $booking_id, true );
		}

		// Delete yacht
		wp_delete_post( $yacht_id, true );

		return true;
	}

	/**
	 * Save yacht
	 *
	 * @param array $data POST data.
	 * @param int   $yacht_id Yacht ID (0 for new).
	 * @return int|false Yacht ID on success, false on failure.
	 */
	private function save_yacht( $data, $yacht_id = 0 ) {
		// Validate
		$title   = isset( $data['yacht_title'] ) ? sanitize_text_field( wp_unslash( $data['yacht_title'] ) ) : '';
		$content = isset( $data['yacht_description'] ) ? wp_kses_post( wp_unslash( $data['yacht_description'] ) ) : '';

		if ( empty( $title ) ) {
			return false;
		}

		// Prepare post data
		$post_data = array(
			'post_type'    => 'yacht',
			'post_title'   => $title,
			'post_content' => $content,
			'post_status'  => 'publish',
		);

		if ( $yacht_id ) {
			$post_data['ID'] = $yacht_id;
			$saved_id        = wp_update_post( $post_data );
		} else {
			$saved_id = wp_insert_post( $post_data );
		}

		if ( is_wp_error( $saved_id ) ) {
			return false;
		}

		// Save GCal alias for global iCal import matching.
		$gcal_alias = isset( $data['yacht_gcal_alias'] ) ? sanitize_text_field( wp_unslash( $data['yacht_gcal_alias'] ) ) : '';
		Yacht::update_gcal_alias( $saved_id, $gcal_alias );

		// Save admin-selected color for aggregated calendar.
		$yacht_color = isset( $data['yacht_color'] ) ? sanitize_text_field( wp_unslash( $data['yacht_color'] ) ) : '';
		Yacht::update_color( $saved_id, $yacht_color );

		return $saved_id;
	}

	/**
	 * Render yachts list page
	 */
	public function render_yachts_page() {
		// Load Yacht List Table
		require_once YACHT_BOOKING_PLUGIN_DIR . 'admin/class-yacht-list-table.php';

		$list_table = new Yacht_List_Table();
		$list_table->prepare_items();

		?>
		<div class="wrap">
			<h1 class="wp-heading-inline"><?php esc_html_e( 'Jachty', 'yacht-booking' ); ?></h1>
			<a href="<?php echo esc_url( admin_url( 'admin.php?page=yacht-bookings-add-yacht' ) ); ?>" class="page-title-action">
				<?php esc_html_e( 'Dodaj nowy', 'yacht-booking' ); ?>
			</a>

			<?php
			// Display success/error messages
			if ( isset( $_GET['deleted'] ) ) {
				$count = (int) $_GET['deleted'];
				printf(
					'<div class="notice notice-success is-dismissible"><p>%s</p></div>',
					esc_html( sprintf( _n( 'Usunięto %d jacht.', 'Usunięto %d jachtów.', $count, 'yacht-booking' ), $count ) )
				);
			}
			?>

			<hr class="wp-header-end">

			<form method="get">
				<input type="hidden" name="page" value="yacht-bookings" />
				<?php
				$list_table->search_box( __( 'Szukaj jachtów', 'yacht-booking' ), 'yacht' );
				?>
			</form>

			<form method="post">
				<?php
				$list_table->display();
				?>
			</form>
		</div>
		<?php
	}

	/**
	 * Render add/edit yacht page
	 */
	public function render_add_yacht_page() {
		$yacht_id = isset( $_GET['yacht_id'] ) ? (int) $_GET['yacht_id'] : 0;
		$yacht    = $yacht_id ? get_post( $yacht_id ) : null;

		// Include edit form view
		require_once YACHT_BOOKING_PLUGIN_DIR . 'admin/views/yacht-edit.php';
	}

	/**
	 * Process add/edit yacht save before any admin output.
	 */
	public function process_yacht_save() {
		if ( ! isset( $_GET['page'] ) || 'yacht-bookings-add-yacht' !== $_GET['page'] ) {
			return;
		}

		if ( ! isset( $_POST['yacht_booking_save_yacht'] ) ) {
			return;
		}

		if ( ! current_user_can( 'yacht_booking_manage_yachts' ) ) {
			return;
		}

		check_admin_referer( 'yacht_booking_save_yacht', 'yacht_booking_nonce' );

		$yacht_id = isset( $_GET['yacht_id'] ) ? (int) $_GET['yacht_id'] : 0;
		$saved_id = $this->save_yacht( $_POST, $yacht_id );

		if ( ! $saved_id ) {
			return;
		}

		$redirect_url = add_query_arg(
			array(
				'page'     => 'yacht-bookings-add-yacht',
				'yacht_id' => $saved_id,
				'saved'    => 1,
			),
			admin_url( 'admin.php' )
		);

		wp_safe_redirect( $redirect_url );
		exit;
	}

	/**
	 * Render bookings list page
	 */
	public function render_bookings_page() {
		// Load Booking List Table
		require_once YACHT_BOOKING_PLUGIN_DIR . 'admin/class-booking-list-table.php';

		$list_table = new Booking_List_Table();
		$list_table->prepare_items();

		?>
		<div class="wrap">
			<h1 class="wp-heading-inline"><?php esc_html_e( 'Rezerwacje', 'yacht-booking' ); ?></h1>
			<a href="<?php echo esc_url( admin_url( 'admin.php?page=yacht-bookings-export' ) ); ?>" class="page-title-action">
				<?php esc_html_e( 'Eksport CSV', 'yacht-booking' ); ?>
			</a>

			<?php
			// Display success/error messages
			if ( isset( $_GET['approved'] ) ) {
				$count = (int) $_GET['approved'];
				printf(
					'<div class="notice notice-success is-dismissible"><p>%s</p></div>',
					esc_html( sprintf( _n( 'Zatwierdzono %d rezerwację.', 'Zatwierdzono %d rezerwacji.', $count, 'yacht-booking' ), $count ) )
				);
			}

			if ( isset( $_GET['cancelled'] ) ) {
				$count = (int) $_GET['cancelled'];
				printf(
					'<div class="notice notice-success is-dismissible"><p>%s</p></div>',
					esc_html( sprintf( _n( 'Anulowano %d rezerwację.', 'Anulowano %d rezerwacji.', $count, 'yacht-booking' ), $count ) )
				);
			}

			if ( isset( $_GET['deleted'] ) ) {
				$count = (int) $_GET['deleted'];
				printf(
					'<div class="notice notice-success is-dismissible"><p>%s</p></div>',
					esc_html( sprintf( _n( 'Usunięto %d rezerwację.', 'Usunięto %d rezerwacji.', $count, 'yacht-booking' ), $count ) )
				);
			}
			?>

			<hr class="wp-header-end">

			<form method="get">
				<input type="hidden" name="page" value="yacht-bookings-list" />
				<?php
				$list_table->search_box( __( 'Szukaj rezerwacji', 'yacht-booking' ), 'booking' );
				$list_table->views();
				?>
			</form>

			<form method="post">
				<?php
				$list_table->display();
				?>
			</form>
		</div>
		<?php
	}

	/**
	 * Render CSV export page.
	 */
	public function render_export_page() {
		if ( ! current_user_can( 'yacht_booking_manage_bookings' ) ) {
			wp_die( esc_html__( 'Brak uprawnień.', 'yacht-booking' ) );
		}

		$filters = $this->get_export_filters();
		$yachts  = get_posts(
			array(
				'post_type'      => 'yacht',
				'posts_per_page' => -1,
				'orderby'        => 'title',
				'order'          => 'ASC',
			)
		);
		?>
		<div class="wrap">
			<h1><?php esc_html_e( 'Eksport Rezerwacji (CSV)', 'yacht-booking' ); ?></h1>
			<p><?php esc_html_e( 'Wygeneruj plik CSV z rezerwacjami i wybranymi filtrami.', 'yacht-booking' ); ?></p>

			<form method="get" action="">
				<input type="hidden" name="page" value="yacht-bookings-export">
				<?php wp_nonce_field( 'yacht_booking_export_csv', 'yacht_booking_export_nonce' ); ?>

				<table class="form-table">
					<tr>
						<th scope="row">
							<label for="status_filter"><?php esc_html_e( 'Status', 'yacht-booking' ); ?></label>
						</th>
						<td>
							<select id="status_filter" name="status_filter">
								<option value="all" <?php selected( $filters['status_filter'], 'all' ); ?>>
									<?php esc_html_e( 'Wszystkie', 'yacht-booking' ); ?>
								</option>
								<option value="pending" <?php selected( $filters['status_filter'], 'pending' ); ?>>
									<?php esc_html_e( 'Oczekujące', 'yacht-booking' ); ?>
								</option>
								<option value="confirmed" <?php selected( $filters['status_filter'], 'confirmed' ); ?>>
									<?php esc_html_e( 'Potwierdzone', 'yacht-booking' ); ?>
								</option>
								<option value="cancelled" <?php selected( $filters['status_filter'], 'cancelled' ); ?>>
									<?php esc_html_e( 'Anulowane', 'yacht-booking' ); ?>
								</option>
							</select>
						</td>
					</tr>
					<tr>
						<th scope="row">
							<label for="yacht_filter"><?php esc_html_e( 'Jacht', 'yacht-booking' ); ?></label>
						</th>
						<td>
							<select id="yacht_filter" name="yacht_filter">
								<option value="0"><?php esc_html_e( 'Wszystkie jachty', 'yacht-booking' ); ?></option>
								<?php foreach ( $yachts as $yacht ) : ?>
									<option value="<?php echo esc_attr( $yacht->ID ); ?>" <?php selected( (int) $filters['yacht_filter'], (int) $yacht->ID ); ?>>
										<?php echo esc_html( $yacht->post_title ); ?>
									</option>
								<?php endforeach; ?>
							</select>
						</td>
					</tr>
					<tr>
						<th scope="row">
							<label for="date_from"><?php esc_html_e( 'Data od', 'yacht-booking' ); ?></label>
						</th>
						<td>
							<input type="date" id="date_from" name="date_from" value="<?php echo esc_attr( $filters['date_from'] ); ?>">
						</td>
					</tr>
					<tr>
						<th scope="row">
							<label for="date_to"><?php esc_html_e( 'Data do', 'yacht-booking' ); ?></label>
						</th>
						<td>
							<input type="date" id="date_to" name="date_to" value="<?php echo esc_attr( $filters['date_to'] ); ?>">
						</td>
					</tr>
				</table>

				<p class="submit">
					<button type="submit" name="yacht_booking_export_csv" value="1" class="button button-primary">
						<?php esc_html_e( 'Pobierz CSV', 'yacht-booking' ); ?>
					</button>
				</p>
			</form>
		</div>
		<?php
	}

	/**
	 * Handle CSV export download.
	 */
	public function process_export_download() {
		if ( ! isset( $_GET['page'] ) || 'yacht-bookings-export' !== $_GET['page'] ) {
			return;
		}

		if ( ! isset( $_GET['yacht_booking_export_csv'] ) ) {
			return;
		}

		if ( ! current_user_can( 'yacht_booking_manage_bookings' ) ) {
			return;
		}

		$nonce = isset( $_GET['yacht_booking_export_nonce'] ) ? sanitize_text_field( wp_unslash( $_GET['yacht_booking_export_nonce'] ) ) : '';
		if ( ! wp_verify_nonce( $nonce, 'yacht_booking_export_csv' ) ) {
			wp_die( esc_html__( 'Nieprawidłowy token bezpieczeństwa.', 'yacht-booking' ) );
		}

		$filters  = $this->get_export_filters();
		$args     = $this->get_export_query_args( $filters );
		$bookings = get_posts( $args );

		nocache_headers();

		$filename = 'yacht-bookings-' . gmdate( 'Ymd-His' ) . '.csv';
		header( 'Content-Type: text/csv; charset=UTF-8' );
		header( 'Content-Disposition: attachment; filename=' . $filename );

		$output = fopen( 'php://output', 'w' );
		if ( false === $output ) {
			exit;
		}

		// UTF-8 BOM for Excel compatibility.
		fwrite( $output, chr( 0xEF ) . chr( 0xBB ) . chr( 0xBF ) );

		fputcsv(
			$output,
			array(
				'booking_id',
				'yacht',
				'customer_name',
				'customer_email',
				'customer_phone',
				'start_date',
				'end_date',
				'status',
				'total_price',
				'created_at',
			),
			';'
		);

		$status_labels = array(
			'pending'   => __( 'Oczekująca', 'yacht-booking' ),
			'confirmed' => __( 'Potwierdzona', 'yacht-booking' ),
			'cancelled' => __( 'Anulowana', 'yacht-booking' ),
		);

		foreach ( $bookings as $booking ) {
			$booking_id = $booking->ID;
			$yacht_id   = Booking::get_yacht_id( $booking_id );
			$yacht      = get_post( $yacht_id );
			$status     = Booking::get_status( $booking_id );

			fputcsv(
				$output,
				array(
					$booking_id,
					$yacht ? $yacht->post_title : '',
					Booking::get_customer_name( $booking_id ),
					Booking::get_customer_email( $booking_id ),
					Booking::get_customer_phone( $booking_id ),
					Settings::format_date( Booking::get_start_date( $booking_id ) ),
					Settings::format_date( Booking::get_end_date( $booking_id ) ),
					isset( $status_labels[ $status ] ) ? $status_labels[ $status ] : $status,
					Settings::format_price( Booking::get_total_price( $booking_id ) ),
					get_the_date( Settings::get_date_format() . ' H:i', $booking ),
				),
				';'
			);
		}

		fclose( $output );
		exit;
	}

	/**
	 * Get sanitized export filters from query string.
	 *
	 * @return array
	 */
	private function get_export_filters() {
		$status_filter = isset( $_GET['status_filter'] ) ? sanitize_text_field( wp_unslash( $_GET['status_filter'] ) ) : 'all';
		$yacht_filter  = isset( $_GET['yacht_filter'] ) ? absint( $_GET['yacht_filter'] ) : 0;
		$date_from     = isset( $_GET['date_from'] ) ? sanitize_text_field( wp_unslash( $_GET['date_from'] ) ) : '';
		$date_to       = isset( $_GET['date_to'] ) ? sanitize_text_field( wp_unslash( $_GET['date_to'] ) ) : '';

		if ( ! in_array( $status_filter, array( 'all', 'pending', 'confirmed', 'cancelled' ), true ) ) {
			$status_filter = 'all';
		}

		if ( ! preg_match( '/^\d{4}-\d{2}-\d{2}$/', $date_from ) ) {
			$date_from = '';
		}

		if ( ! preg_match( '/^\d{4}-\d{2}-\d{2}$/', $date_to ) ) {
			$date_to = '';
		}

		return array(
			'status_filter' => $status_filter,
			'yacht_filter'  => $yacht_filter,
			'date_from'     => $date_from,
			'date_to'       => $date_to,
		);
	}

	/**
	 * Build WP_Query args for export.
	 *
	 * @param array $filters Export filters.
	 * @return array
	 */
	private function get_export_query_args( $filters ) {
		$args = array(
			'post_type'      => 'yacht_booking',
			'post_status'    => 'publish',
			'posts_per_page' => -1,
			'orderby'        => 'date',
			'order'          => 'DESC',
		);

		$meta_query = array();

		if ( 'all' !== $filters['status_filter'] ) {
			$meta_query[] = array(
				'key'   => '_booking_status',
				'value' => $filters['status_filter'],
			);
		}

		if ( ! empty( $filters['yacht_filter'] ) ) {
			$meta_query[] = array(
				'key'   => '_booking_yacht_id',
				'value' => $filters['yacht_filter'],
			);
		}

		if ( ! empty( $filters['date_from'] ) ) {
			$meta_query[] = array(
				'key'     => '_booking_end_date',
				'value'   => $filters['date_from'],
				'compare' => '>=',
				'type'    => 'DATE',
			);
		}

		if ( ! empty( $filters['date_to'] ) ) {
			$meta_query[] = array(
				'key'     => '_booking_start_date',
				'value'   => $filters['date_to'],
				'compare' => '<=',
				'type'    => 'DATE',
			);
		}

		if ( ! empty( $meta_query ) ) {
			$args['meta_query'] = array_merge( array( 'relation' => 'AND' ), $meta_query );
		}

		return $args;
	}

	/**
	 * Render settings page
	 */
	/**
	 * Render inquiries admin page
	 */
	public function render_inquiries_page() {
		if ( ! current_user_can( 'yacht_booking_manage_bookings' ) ) {
			wp_die( esc_html__( 'Brak uprawnień.', 'yacht-booking' ) );
		}

		// Handle view email action
		if ( isset( $_GET['action'] ) && 'view_email' === $_GET['action'] && isset( $_GET['inquiry'] ) ) {
			$inquiry_id = absint( $_GET['inquiry'] );
			check_admin_referer( 'view_email_' . $inquiry_id );

			$type = isset( $_GET['type'] ) && 'customer' === $_GET['type'] ? 'customer' : 'admin';
			$body = 'admin' === $type
				? Inquiry::get_admin_email_body( $inquiry_id )
				: Inquiry::get_customer_email_body( $inquiry_id );

			$label = 'admin' === $type
				? __( 'Email wysłany do administratora', 'yacht-booking' )
				: __( 'Email wysłany do klienta', 'yacht-booking' );

			echo '<div class="wrap">';
			echo '<h1>' . esc_html( $label ) . ' — #' . esc_html( $inquiry_id ) . '</h1>';
			echo '<p><a href="' . esc_url( admin_url( 'admin.php?page=yacht-inquiries' ) ) . '">&larr; '
				. esc_html__( 'Wróć do listy zapytań', 'yacht-booking' ) . '</a></p>';
			echo '<div style="background: #fff; padding: 20px; border: 1px solid #ccd0d4; border-radius: 4px; max-width: 700px;">';
			echo $body ? wp_kses_post( $body ) : '<p><em>' . esc_html__( 'Brak treści emaila.', 'yacht-booking' ) . '</em></p>';
			echo '</div></div>';
			return;
		}

		// Handle delete action
		if ( isset( $_GET['action'] ) && 'delete' === $_GET['action'] && isset( $_GET['inquiry'] ) ) {
			$inquiry_id = absint( $_GET['inquiry'] );
			check_admin_referer( 'delete_inquiry_' . $inquiry_id );
			wp_delete_post( $inquiry_id, true );
			wp_safe_redirect( admin_url( 'admin.php?page=yacht-inquiries&deleted=1' ) );
			exit;
		}

		// Handle bulk delete
		if ( isset( $_POST['action'] ) && 'delete' === $_POST['action'] && ! empty( $_POST['inquiry'] ) ) {
			check_admin_referer( 'bulk-inquiries' );
			$ids = array_map( 'absint', (array) $_POST['inquiry'] );
			foreach ( $ids as $id ) {
				wp_delete_post( $id, true );
			}
			wp_safe_redirect( admin_url( 'admin.php?page=yacht-inquiries&deleted=' . count( $ids ) ) );
			exit;
		}

		require_once YACHT_BOOKING_PLUGIN_DIR . 'admin/class-inquiry-list-table.php';

		$table = new Inquiry_List_Table();
		$table->prepare_items();

		?>
		<div class="wrap">
			<h1 class="wp-heading-inline"><?php esc_html_e( 'Zapytania o rezerwację', 'yacht-booking' ); ?></h1>

			<?php if ( isset( $_GET['deleted'] ) ) : ?>
				<div class="notice notice-success is-dismissible">
					<p><?php esc_html_e( 'Zapytanie zostało usunięte.', 'yacht-booking' ); ?></p>
				</div>
			<?php endif; ?>

			<form method="get">
				<input type="hidden" name="page" value="yacht-inquiries">
				<?php
				$table->search_box( __( 'Szukaj', 'yacht-booking' ), 'inquiry-search' );
				$table->display();
				?>
			</form>
		</div>
		<?php
	}

	public function render_settings_page() {
		// Load Google Calendar classes
		if ( file_exists( YACHT_BOOKING_PLUGIN_DIR . 'integrations/google-calendar/class-oauth-handler.php' ) ) {
			require_once YACHT_BOOKING_PLUGIN_DIR . 'integrations/google-calendar/class-oauth-handler.php';
		}
		if ( file_exists( YACHT_BOOKING_PLUGIN_DIR . 'integrations/google-calendar/class-gcal-service.php' ) ) {
			require_once YACHT_BOOKING_PLUGIN_DIR . 'integrations/google-calendar/class-gcal-service.php';
		}

		// Get current tab
		$active_tab = isset( $_GET['tab'] ) ? sanitize_text_field( wp_unslash( $_GET['tab'] ) ) : 'general';

		?>
		<div class="wrap">
			<h1><?php esc_html_e( 'Ustawienia Rezerwacji Jachtów', 'yacht-booking' ); ?></h1>

			<h2 class="nav-tab-wrapper">
				<a href="?page=yacht-bookings-settings&tab=general" class="nav-tab <?php echo $active_tab === 'general' ? 'nav-tab-active' : ''; ?>">
					<?php esc_html_e( 'Ustawienia ogólne', 'yacht-booking' ); ?>
				</a>
				<a href="?page=yacht-bookings-settings&tab=email-templates" class="nav-tab <?php echo $active_tab === 'email-templates' ? 'nav-tab-active' : ''; ?>">
					<?php esc_html_e( 'Szablony Email', 'yacht-booking' ); ?>
				</a>
				<a href="?page=yacht-bookings-settings&tab=google-calendar" class="nav-tab <?php echo $active_tab === 'google-calendar' ? 'nav-tab-active' : ''; ?>">
					<?php esc_html_e( 'Google Calendar', 'yacht-booking' ); ?>
				</a>
			</h2>

			<div class="tab-content">
				<?php
				if ( $active_tab === 'general' ) {
					$this->render_general_settings();
				} elseif ( $active_tab === 'email-templates' ) {
					$this->render_email_templates_settings();
				} elseif ( $active_tab === 'google-calendar' ) {
					$this->render_google_calendar_settings();
				}
				?>
			</div>
		</div>
		<?php
	}

	/**
	 * Render general settings tab
	 */
	private function render_general_settings() {
		$booking_enabled = Settings::is_booking_enabled();
		$default_status  = Settings::get_default_status();
		$email_from_name = Settings::get_email_from_name();
		$email_from      = Settings::get_email_from_address();
		$date_format     = Settings::get_date_format();
		$currency_symbol = Settings::get_currency_symbol();
		$terms_page_id   = Settings::get_terms_page_id();
		?>
		<form method="post" action="">
			<?php wp_nonce_field( 'yacht_booking_save_settings' ); ?>

			<h2><?php esc_html_e( 'Ustawienia rezerwacji', 'yacht-booking' ); ?></h2>
			<table class="form-table">
				<tr>
					<th scope="row">
						<label for="booking_enabled"><?php esc_html_e( 'Rezerwacje online', 'yacht-booking' ); ?></label>
					</th>
					<td>
						<label>
							<input type="checkbox" name="booking_enabled" id="booking_enabled" value="1" <?php checked( $booking_enabled ); ?>>
							<?php esc_html_e( 'Włącz rezerwacje online', 'yacht-booking' ); ?>
						</label>
						<p class="description">
							<?php esc_html_e( 'Gdy wyłączone, klienci widzą tylko kalendarz dostępności bez możliwości rezerwacji.', 'yacht-booking' ); ?>
						</p>
					</td>
				</tr>
				<tr>
					<th scope="row">
						<label for="default_status"><?php esc_html_e( 'Domyślny status rezerwacji', 'yacht-booking' ); ?></label>
					</th>
					<td>
						<select name="default_status" id="default_status">
							<option value="pending" <?php selected( $default_status, 'pending' ); ?>>
								<?php esc_html_e( 'Oczekująca (wymaga zatwierdzenia)', 'yacht-booking' ); ?>
							</option>
							<option value="confirmed" <?php selected( $default_status, 'confirmed' ); ?>>
								<?php esc_html_e( 'Potwierdzona (automatyczne zatwierdzenie)', 'yacht-booking' ); ?>
							</option>
						</select>
						<p class="description">
							<?php esc_html_e( 'Status przypisywany nowym rezerwacjom.', 'yacht-booking' ); ?>
						</p>
					</td>
				</tr>
			</table>

			<h2><?php esc_html_e( 'Ustawienia email', 'yacht-booking' ); ?></h2>
			<table class="form-table">
				<tr>
					<th scope="row">
						<label for="email_from_name"><?php esc_html_e( 'Nazwa nadawcy', 'yacht-booking' ); ?></label>
					</th>
					<td>
						<input type="text" name="email_from_name" id="email_from_name" value="<?php echo esc_attr( $email_from_name ); ?>" class="regular-text">
						<p class="description">
							<?php esc_html_e( 'Nazwa wyświetlana w emailach wysyłanych do klientów.', 'yacht-booking' ); ?>
						</p>
					</td>
				</tr>
				<tr>
					<th scope="row">
						<label for="email_from"><?php esc_html_e( 'Adres email nadawcy', 'yacht-booking' ); ?></label>
					</th>
					<td>
						<input type="email" name="email_from" id="email_from" value="<?php echo esc_attr( $email_from ); ?>" class="regular-text">
						<p class="description">
							<?php esc_html_e( 'Adres email używany jako nadawca w powiadomieniach.', 'yacht-booking' ); ?>
						</p>
					</td>
				</tr>
			</table>

			<h2><?php esc_html_e( 'Ustawienia formatowania', 'yacht-booking' ); ?></h2>
			<table class="form-table">
				<tr>
					<th scope="row">
						<label for="date_format"><?php esc_html_e( 'Format daty', 'yacht-booking' ); ?></label>
					</th>
					<td>
						<select name="date_format" id="date_format">
							<option value="Y-m-d" <?php selected( $date_format, 'Y-m-d' ); ?>>YYYY-MM-DD (<?php echo esc_html( gmdate( 'Y-m-d' ) ); ?>)</option>
							<option value="d/m/Y" <?php selected( $date_format, 'd/m/Y' ); ?>>DD/MM/YYYY (<?php echo esc_html( gmdate( 'd/m/Y' ) ); ?>)</option>
							<option value="m/d/Y" <?php selected( $date_format, 'm/d/Y' ); ?>>MM/DD/YYYY (<?php echo esc_html( gmdate( 'm/d/Y' ) ); ?>)</option>
							<option value="d.m.Y" <?php selected( $date_format, 'd.m.Y' ); ?>>DD.MM.YYYY (<?php echo esc_html( gmdate( 'd.m.Y' ) ); ?>)</option>
						</select>
						<p class="description">
							<?php esc_html_e( 'Format wyświetlania dat w emailach i interfejsie.', 'yacht-booking' ); ?>
						</p>
					</td>
				</tr>
				<tr>
					<th scope="row">
						<label for="currency_symbol"><?php esc_html_e( 'Symbol waluty', 'yacht-booking' ); ?></label>
					</th>
					<td>
						<input type="text" name="currency_symbol" id="currency_symbol" value="<?php echo esc_attr( $currency_symbol ); ?>" class="small-text">
						<p class="description">
							<?php esc_html_e( 'Symbol waluty wyświetlany przy cenach (np. zł, €, $).', 'yacht-booking' ); ?>
						</p>
					</td>
				</tr>
			</table>

			<h2><?php esc_html_e( 'Regulamin', 'yacht-booking' ); ?></h2>
			<table class="form-table">
				<tr>
					<th scope="row">
						<label for="terms_page_id"><?php esc_html_e( 'Strona regulaminu', 'yacht-booking' ); ?></label>
					</th>
					<td>
						<?php
						wp_dropdown_pages(
							array(
								'name'              => 'terms_page_id',
								'id'                => 'terms_page_id',
								'selected'          => $terms_page_id,
								'show_option_none'  => __( '— Wybierz stronę —', 'yacht-booking' ),
								'option_none_value' => 0,
							)
						);
						?>
						<p class="description">
							<?php esc_html_e( 'Strona z regulaminem wyświetlana w formularzu rezerwacji.', 'yacht-booking' ); ?>
						</p>
					</td>
				</tr>
			</table>

			<p class="submit">
				<input type="submit" name="yacht_booking_save_settings" class="button-primary" value="<?php esc_attr_e( 'Zapisz ustawienia', 'yacht-booking' ); ?>">
			</p>
		</form>
		<?php
	}

	/**
	 * Render email template settings tab.
	 */
	private function render_email_templates_settings() {
		$templates    = Email_Templates::get_templates();
		$labels       = Email_Templates::get_template_labels();
		$available    = Email_Templates::get_available_tags();
		$preview_data = array(
			'booking_id'     => 1234,
			'yacht_name'     => __( 'Oceanic 42', 'yacht-booking' ),
			'customer_name'  => __( 'Jan Kowalski', 'yacht-booking' ),
			'customer_email' => 'jan.kowalski@example.com',
			'customer_phone' => '+48 500 600 700',
			'start_date'     => Settings::format_date( gmdate( 'Y-m-d', strtotime( '+7 days' ) ) ),
			'end_date'       => Settings::format_date( gmdate( 'Y-m-d', strtotime( '+10 days' ) ) ),
			'days'           => 4,
			'total_price'    => Settings::format_price( 2499.00 ),
			'status'         => __( 'Potwierdzona', 'yacht-booking' ),
			'admin_link'     => admin_url( 'admin.php?page=yacht-bookings-list' ),
		);
		?>
		<form method="post" action="">
			<?php wp_nonce_field( 'yacht_booking_save_email_templates' ); ?>

			<h2><?php esc_html_e( 'Szablony Email', 'yacht-booking' ); ?></h2>
			<p><?php esc_html_e( 'Skonfiguruj tematy i treści wiadomości email. Możesz używać poniższych tagów.', 'yacht-booking' ); ?></p>

			<p>
				<?php foreach ( $available as $tag => $label ) : ?>
					<code><?php echo esc_html( $tag ); ?></code> - <?php echo esc_html( $label ); ?><br>
				<?php endforeach; ?>
			</p>

			<?php foreach ( $labels as $type => $label ) : ?>
				<?php
				$template = isset( $templates[ $type ] ) ? $templates[ $type ] : array( 'subject' => '', 'body' => '' );
				$preview  = Email_Templates::compile( $type, $preview_data );
				?>
				<hr>
				<h3><?php echo esc_html( $label ); ?></h3>
				<table class="form-table">
					<tr>
						<th scope="row">
							<label for="template_subject_<?php echo esc_attr( $type ); ?>">
								<?php esc_html_e( 'Temat', 'yacht-booking' ); ?>
							</label>
						</th>
						<td>
							<input
								type="text"
								class="regular-text"
								id="template_subject_<?php echo esc_attr( $type ); ?>"
								name="template_subject[<?php echo esc_attr( $type ); ?>]"
								value="<?php echo esc_attr( $template['subject'] ); ?>"
							/>
						</td>
					</tr>
					<tr>
						<th scope="row">
							<?php esc_html_e( 'Treść', 'yacht-booking' ); ?>
						</th>
						<td>
							<?php
							wp_editor(
								$template['body'],
								'yacht_booking_template_body_' . $type,
								array(
									'textarea_name' => 'template_body[' . $type . ']',
									'textarea_rows' => 8,
									'media_buttons' => false,
									'teeny'         => true,
								)
							);
							?>
						</td>
					</tr>
					<tr>
						<th scope="row">
							<?php esc_html_e( 'Podgląd', 'yacht-booking' ); ?>
						</th>
						<td>
							<p><strong><?php esc_html_e( 'Temat:', 'yacht-booking' ); ?></strong> <?php echo esc_html( $preview['subject'] ); ?></p>
							<div style="background: #fff; border: 1px solid #ccd0d4; padding: 12px;">
								<?php echo wp_kses_post( $preview['body'] ); ?>
							</div>
						</td>
					</tr>
				</table>
			<?php endforeach; ?>

			<p class="submit">
				<button type="submit" name="yacht_booking_save_email_templates" class="button button-primary">
					<?php esc_html_e( 'Zapisz szablony', 'yacht-booking' ); ?>
				</button>
				<button
					type="submit"
					name="yacht_booking_reset_email_templates"
					class="button button-secondary"
					onclick="return confirm('<?php echo esc_js( __( 'Przywrócić domyślne szablony email?', 'yacht-booking' ) ); ?>');"
				>
					<?php esc_html_e( 'Przywróć domyślne', 'yacht-booking' ); ?>
				</button>
			</p>
		</form>
		<?php
	}

	/**
	 * Save email templates.
	 */
	private function save_email_templates() {
		$subjects  = isset( $_POST['template_subject'] ) && is_array( $_POST['template_subject'] ) ? $_POST['template_subject'] : array();
		$bodies    = isset( $_POST['template_body'] ) && is_array( $_POST['template_body'] ) ? $_POST['template_body'] : array();
		$templates = array();

		foreach ( Email_Templates::get_default_templates() as $type => $default_template ) {
			$templates[ $type ] = array(
				'subject' => isset( $subjects[ $type ] ) ? $subjects[ $type ] : '',
				'body'    => isset( $bodies[ $type ] ) ? $bodies[ $type ] : '',
			);
		}

		Email_Templates::save_templates( $templates );

		wp_safe_redirect( admin_url( 'admin.php?page=yacht-bookings-settings&tab=email-templates&templates_saved=1' ) );
		exit;
	}

	/**
	 * Render Google Calendar settings tab
	 */
	private function render_google_calendar_settings() {
		?>
		<h2><?php esc_html_e( 'Synchronizacja z Google Calendar (iCal)', 'yacht-booking' ); ?></h2>

		<?php
		// =====================================================================
		// Globalna synchronizacja iCal (jeden wspólny kalendarz Google,
		// podział na jachty po prefiksie nazwy w tytule eventu).
		// Działa niezależnie od OAuth — wystarczy publiczny URL kalendarza Google.
		// =====================================================================
		$global_import_url = (string) get_option( 'yacht_booking_global_ical_import_url', '' );
		$global_export_url = \YachtBooking\Integrations\ICal\ICal_Feed::get_global_feed_url();
		$last_global_run   = (string) get_option( 'yacht_booking_global_ical_last_import', '' );
		$ical_sync_mode    = Settings::get_ical_sync_mode();
		?>
		<div class="card" style="margin-top: 30px;">
			<h3><?php esc_html_e( 'Globalna synchronizacja iCal (jeden wspólny kalendarz)', 'yacht-booking' ); ?></h3>
			<p class="description">
				<?php esc_html_e( 'Mechanizm dwukierunkowej synchronizacji wszystkich jachtów z jednym kalendarzem Google, bez OAuth. Plugin rozpoznaje jacht po prefiksie tytułu eventu w formacie: "Nazwa jachtu - opis" (np. "Maja - Kowalski 5 osób"). Eventy bez rozpoznanego prefiksu są ignorowane.', 'yacht-booking' ); ?>
			</p>

			<h4><?php esc_html_e( 'Krok 1: Dodaj feed pluginu jako kalendarz w Google', 'yacht-booking' ); ?></h4>
			<p class="description">
				<?php esc_html_e( 'Skopiuj poniższy URL i dodaj go w Google Calendar: "Inne kalendarze" → "+ Dodaj" → "Z URL-a". Rezerwacje ze strony pojawią się w Twoim Google Calendar (Google odświeża subskrypcję co kilka godzin).', 'yacht-booking' ); ?>
			</p>
			<p>
				<input
					type="text"
					readonly
					value="<?php echo esc_attr( $global_export_url ); ?>"
					class="regular-text code"
					id="yacht-global-ical-export-url"
					style="width: 100%; max-width: 600px;"
					onclick="this.select();"
				/>
				<button type="button" class="button" onclick="navigator.clipboard.writeText(document.getElementById('yacht-global-ical-export-url').value); this.textContent='<?php echo esc_js( __( 'Skopiowano!', 'yacht-booking' ) ); ?>';">
					<?php esc_html_e( 'Kopiuj', 'yacht-booking' ); ?>
				</button>
			</p>
			<form method="post" action="" style="margin-top: 10px;" onsubmit="return confirm('<?php echo esc_js( __( 'Wygenerować nowy token? Poprzedni URL przestanie działać.', 'yacht-booking' ) ); ?>')">
				<?php wp_nonce_field( 'yacht_booking_regenerate_global_ical_token' ); ?>
				<button type="submit" name="yacht_booking_regenerate_global_ical_token" class="button button-secondary">
					<?php esc_html_e( 'Wygeneruj nowy token', 'yacht-booking' ); ?>
				</button>
				<span class="description" style="margin-left: 10px;">
					<?php esc_html_e( 'Unieważnia bieżący URL — używaj gdy podejrzewasz wyciek.', 'yacht-booking' ); ?>
				</span>
			</form>

			<h4 style="margin-top: 25px;"><?php esc_html_e( 'Krok 2: Wklej iCal URL Twojego kalendarza Google', 'yacht-booking' ); ?></h4>
			<p class="description">
				<?php esc_html_e( 'W Google Calendar otwórz ustawienia kalendarza → "Tajny adres w formacie iCal" → skopiuj URL i wklej poniżej. Plugin pobiera ten kalendarz co godzinę i importuje rozpoznane eventy jako blokady.', 'yacht-booking' ); ?>
			</p>
			<form method="post" action="">
				<?php wp_nonce_field( 'yacht_booking_save_global_ical' ); ?>
				<table class="form-table">
					<tr>
						<th scope="row">
							<label for="ical_sync_mode"><?php esc_html_e( 'Tryb synchronizacji iCal', 'yacht-booking' ); ?></label>
						</th>
						<td>
							<select name="ical_sync_mode" id="ical_sync_mode">
								<option value="per_yacht" <?php selected( $ical_sync_mode, 'per_yacht' ); ?>>
									<?php esc_html_e( 'Per jacht — dopasowanie po prefiksie SUMMARY', 'yacht-booking' ); ?>
								</option>
								<option value="global" <?php selected( $ical_sync_mode, 'global' ); ?>>
									<?php esc_html_e( 'Wspólny kalendarz — wszystkie eventy bez filtrowania', 'yacht-booking' ); ?>
								</option>
							</select>
							<p class="description">
								<?php esc_html_e( 'Per jacht: importowane są tylko eventy z prefiksem nazwy jachtu w tytule (format: "Nazwa jachtu - opis"). Eventy bez dopasowania są ignorowane. Tworzą blokady dostępności.', 'yacht-booking' ); ?>
							</p>
							<p class="description">
								<?php esc_html_e( 'Wspólny kalendarz: importowane są wszystkie eventy bez wyjątku, jako wspólne wydarzenia kalendarza. NIE blokują dostępności poszczególnych jachtów. Pokazywane na widgecie zbiorczym "wszystkie jachty".', 'yacht-booking' ); ?>
							</p>
						</td>
					</tr>
					<tr>
						<th scope="row">
							<label for="global_ical_import_url"><?php esc_html_e( 'iCal Import URL', 'yacht-booking' ); ?></label>
						</th>
						<td>
							<input
								type="url"
								name="global_ical_import_url"
								id="global_ical_import_url"
								class="regular-text"
								value="<?php echo esc_attr( $global_import_url ); ?>"
								placeholder="https://calendar.google.com/calendar/ical/..."
								style="width: 100%; max-width: 600px;"
							/>
							<?php if ( $last_global_run ) : ?>
								<p class="description">
									<?php
									printf(
										/* translators: %s: timestamp */
										esc_html__( 'Ostatni import: %s', 'yacht-booking' ),
										esc_html( $last_global_run )
									);
									?>
								</p>
							<?php endif; ?>
						</td>
					</tr>
				</table>
				<p class="submit">
					<input type="submit" name="yacht_booking_save_global_ical" class="button-primary" value="<?php esc_attr_e( 'Zapisz URL', 'yacht-booking' ); ?>">
				</p>
			</form>

			<h4 style="margin-top: 25px;"><?php esc_html_e( 'Krok 3: Importuj teraz (opcjonalnie)', 'yacht-booking' ); ?></h4>
			<p class="description">
				<?php esc_html_e( 'Cron godzinny pobiera kalendarz automatycznie. Możesz wymusić import ręcznie:', 'yacht-booking' ); ?>
			</p>
			<form method="post" action="">
				<?php wp_nonce_field( 'yacht_booking_run_global_ical_import' ); ?>
				<button type="submit" name="yacht_booking_run_global_ical_import" class="button">
					<?php esc_html_e( 'Importuj teraz', 'yacht-booking' ); ?>
				</button>
			</form>

			<h4 style="margin-top: 25px;"><?php esc_html_e( 'Jak to działa', 'yacht-booking' ); ?></h4>
			<ul style="margin-left: 20px; list-style: disc;">
				<li><?php esc_html_e( 'Tytuły eventów w Google Calendar muszą mieć format: "Nazwa jachtu - dowolny opis" (separator to spacja-myślnik-spacja).', 'yacht-booking' ); ?></li>
				<li><?php esc_html_e( 'Dopasowanie po pełnej nazwie jachtu lub jego aliasie (pole "Alias dla Google Calendar" w edycji jachtu).', 'yacht-booking' ); ?></li>
				<li><?php esc_html_e( 'Eventy bez separatora albo z nieznanym prefiksem są ignorowane (nie tworzą blokad).', 'yacht-booking' ); ?></li>
				<li><?php esc_html_e( 'Usunięcie eventu w Google Calendar usuwa odpowiadającą blokadę po następnym imporcie.', 'yacht-booking' ); ?></li>
				<li><?php esc_html_e( 'Eventy zaimportowane z Google nie są wysyłane z powrotem (anti-loop).', 'yacht-booking' ); ?></li>
			</ul>
		</div>

		<?php
	}

	/**
	 * Save general settings
	 */
	private function save_settings() {
		// Online booking toggle
		update_option( 'yacht_booking_enabled', isset( $_POST['booking_enabled'] ) ? '1' : '0' );

		// Booking settings
		if ( isset( $_POST['default_status'] ) ) {
			$default_status = sanitize_text_field( wp_unslash( $_POST['default_status'] ) );
			if ( in_array( $default_status, array( 'pending', 'confirmed' ), true ) ) {
				update_option( 'yacht_booking_default_status', $default_status );
			}
		}

		// Email settings
		if ( isset( $_POST['email_from_name'] ) ) {
			update_option( 'yacht_booking_email_from_name', sanitize_text_field( wp_unslash( $_POST['email_from_name'] ) ) );
		}
		if ( isset( $_POST['email_from'] ) ) {
			update_option( 'yacht_booking_email_from', sanitize_email( wp_unslash( $_POST['email_from'] ) ) );
		}

		// Formatting settings
		if ( isset( $_POST['date_format'] ) ) {
			$date_format = sanitize_text_field( wp_unslash( $_POST['date_format'] ) );
			if ( in_array( $date_format, Settings::get_supported_date_formats(), true ) ) {
				update_option( 'yacht_booking_date_format', $date_format );
			}
		}
		if ( isset( $_POST['currency_symbol'] ) ) {
			update_option( 'yacht_booking_currency_symbol', sanitize_text_field( wp_unslash( $_POST['currency_symbol'] ) ) );
		}

		// Terms page
		if ( isset( $_POST['terms_page_id'] ) ) {
			update_option( 'yacht_booking_terms_page_id', absint( $_POST['terms_page_id'] ) );
		}

		wp_safe_redirect( admin_url( 'admin.php?page=yacht-bookings-settings&tab=general&saved=1' ) );
		exit;
	}

	/**
	 * Process booking actions (approve, cancel, delete)
	 */
	public function process_booking_actions() {
		// Check if we're on the bookings list page
		if ( ! isset( $_GET['page'] ) || $_GET['page'] !== 'yacht-bookings-list' ) {
			return;
		}

		if ( ! current_user_can( 'yacht_booking_manage_bookings' ) ) {
			return;
		}

		// Single action: approve
		if ( isset( $_GET['action'] ) && $_GET['action'] === 'approve' && isset( $_GET['booking'] ) ) {
			$booking_id = (int) $_GET['booking'];
			check_admin_referer( 'approve_booking_' . $booking_id );

			Booking::update_status( $booking_id, 'confirmed' );

			wp_safe_redirect(
				add_query_arg(
					array(
						'page'     => 'yacht-bookings-list',
						'approved' => 1,
					),
					admin_url( 'admin.php' )
				)
			);
			exit;
		}

		// Single action: cancel
		if ( isset( $_GET['action'] ) && $_GET['action'] === 'cancel' && isset( $_GET['booking'] ) ) {
			$booking_id = (int) $_GET['booking'];
			check_admin_referer( 'cancel_booking_' . $booking_id );

			// Update status to cancelled
			Booking::update_status( $booking_id, 'cancelled' );

			// Clear availability cache
			Availability::clear_booking_availability( $booking_id );

			wp_safe_redirect(
				add_query_arg(
					array(
						'page'      => 'yacht-bookings-list',
						'cancelled' => 1,
					),
					admin_url( 'admin.php' )
				)
			);
			exit;
		}

		// Single action: delete
		if ( isset( $_GET['action'] ) && $_GET['action'] === 'delete' && isset( $_GET['booking'] ) ) {
			$booking_id = (int) $_GET['booking'];
			check_admin_referer( 'delete_booking_' . $booking_id );

			// Clear availability cache
			Availability::clear_booking_availability( $booking_id );

			// Delete booking
			wp_delete_post( $booking_id, true );

			wp_safe_redirect(
				add_query_arg(
					array(
						'page'    => 'yacht-bookings-list',
						'deleted' => 1,
					),
					admin_url( 'admin.php' )
				)
			);
			exit;
		}

		// Bulk actions
		if ( isset( $_POST['action'] ) && isset( $_POST['booking'] ) ) {
			check_admin_referer( 'bulk-bookings' );

			$booking_ids = array_map( 'intval', $_POST['booking'] );
			$action      = sanitize_text_field( wp_unslash( $_POST['action'] ) );
			$count       = 0;

			switch ( $action ) {
				case 'approve':
					foreach ( $booking_ids as $booking_id ) {
						$current_status = Booking::get_status( $booking_id );
						if ( 'pending' === $current_status ) {
							Booking::update_status( $booking_id, 'confirmed' );
							$count++;
						}
					}
					wp_safe_redirect(
						add_query_arg(
							array(
								'page'     => 'yacht-bookings-list',
								'approved' => $count,
							),
							admin_url( 'admin.php' )
						)
					);
					exit;

				case 'cancel':
					foreach ( $booking_ids as $booking_id ) {
						$current_status = Booking::get_status( $booking_id );
						if ( in_array( $current_status, array( 'pending', 'confirmed' ), true ) ) {
							Booking::update_status( $booking_id, 'cancelled' );
							Availability::clear_booking_availability( $booking_id );
							$count++;
						}
					}
					wp_safe_redirect(
						add_query_arg(
							array(
								'page'      => 'yacht-bookings-list',
								'cancelled' => $count,
							),
							admin_url( 'admin.php' )
						)
					);
					exit;

				case 'delete':
					foreach ( $booking_ids as $booking_id ) {
						Availability::clear_booking_availability( $booking_id );
						wp_delete_post( $booking_id, true );
						$count++;
					}
					wp_safe_redirect(
						add_query_arg(
							array(
								'page'    => 'yacht-bookings-list',
								'deleted' => $count,
							),
							admin_url( 'admin.php' )
						)
					);
					exit;
			}
		}
	}

	/**
	 * Send email notification to customer when booking status changes
	 *
	 * @param int    $booking_id Booking post ID.
	 * @param string $new_status New status.
	 */
	public function send_customer_notification( $booking_id, $new_status ) {
		// Only send emails for confirmed and cancelled statuses
		if ( ! in_array( $new_status, array( 'confirmed', 'cancelled' ), true ) ) {
			return;
		}

		$template_type  = 'confirmed' === $new_status
			? Email_Templates::TYPE_CUSTOMER_CONFIRMED
			: Email_Templates::TYPE_CUSTOMER_CANCELLED;
		$template_data  = Email_Templates::get_booking_template_data( $booking_id );
		$customer_email = Booking::get_customer_email( $booking_id );
		$template      = Email_Templates::compile( $template_type, $template_data );

		if ( empty( $customer_email ) || empty( $template['subject'] ) ) {
			return;
		}

		// Email headers
		$headers = array(
			'Content-Type: text/html; charset=UTF-8',
			'From: ' . Settings::get_email_from_name() . ' <' . Settings::get_email_from_address() . '>',
		);

		// Send email
		wp_mail( $customer_email, $template['subject'], $template['body'], $headers );

		// Allow other plugins to hook in
		do_action( 'yacht_booking_customer_notification_sent', $booking_id, $new_status, $customer_email );
	}
}