<?php
/**
 * Uninstall handler for OpenGraph (by ROBOTSTXT)
 *
 * Fired when the plugin is uninstalled.
 *
 * @package ROBOTSTXT_OG
 * @version 1.0.0
 */

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

/**
 * Delete plugin data if user opted in to data deletion.
 */
function robotstxt_og_uninstall_cleanup() {
	// Check if user opted in to delete data on uninstall.
	$delete_data = get_option( 'robotstxt_og_delete_data_on_uninstall', false );

	if ( ! $delete_data ) {
		// Preserve data by default.
		return;
	}

	// Delete all plugin options.
	delete_option( 'robotstxt_og_fallback_image' );
	delete_option( 'robotstxt_og_homepage_image' );
	delete_option( 'robotstxt_og_enable_facebook' );
	delete_option( 'robotstxt_og_enable_twitter' );
	delete_option( 'robotstxt_og_twitter_card_type' );
	delete_option( 'robotstxt_og_twitter_site' );
	delete_option( 'robotstxt_og_delete_data_on_uninstall' );

	// Delete all cached postmeta (fallback URLs and per-post OG overrides).
	global $wpdb;

	// phpcs:disable WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching
	// Bulk delete during uninstall — no WP API exists to delete all postmeta rows by key at once.
	$wpdb->query(
		$wpdb->prepare(
			"DELETE FROM {$wpdb->postmeta} WHERE meta_key = %s",
			'_og_image_fallback_url'
		)
	);

	$wpdb->query(
		$wpdb->prepare(
			"DELETE FROM {$wpdb->postmeta} WHERE meta_key = %s",
			'_og_title'
		)
	);

	$wpdb->query(
		$wpdb->prepare(
			"DELETE FROM {$wpdb->postmeta} WHERE meta_key = %s",
			'_og_description'
		)
	);
	// phpcs:enable WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching

	// Clear related transients.
	delete_transient( 'robotstxt_og_diagnostics_cache' );

	// On Multisite, clean up site-by-site.
	if ( is_multisite() ) {
		$sites = get_sites(
			array(
				'number' => 0,
			)
		);

		foreach ( $sites as $site ) {
			switch_to_blog( $site->blog_id );

			// Delete site-specific options.
			delete_option( 'robotstxt_og_fallback_image' );
			delete_option( 'robotstxt_og_homepage_image' );
			delete_option( 'robotstxt_og_enable_facebook' );
			delete_option( 'robotstxt_og_enable_twitter' );
			delete_option( 'robotstxt_og_twitter_card_type' );
			delete_option( 'robotstxt_og_twitter_site' );
			delete_option( 'robotstxt_og_delete_data_on_uninstall' );

			// Delete site-specific postmeta.
			// phpcs:disable WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching
			// Bulk delete during uninstall — no WP API exists to delete all postmeta rows by key at once.
			$wpdb->query(
				$wpdb->prepare(
					"DELETE FROM {$wpdb->postmeta} WHERE meta_key = %s",
					'_og_image_fallback_url'
				)
			);

			$wpdb->query(
				$wpdb->prepare(
					"DELETE FROM {$wpdb->postmeta} WHERE meta_key = %s",
					'_og_title'
				)
			);

			$wpdb->query(
				$wpdb->prepare(
					"DELETE FROM {$wpdb->postmeta} WHERE meta_key = %s",
					'_og_description'
				)
			);
			// phpcs:enable WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching

			// Clear site-specific transients.
			delete_transient( 'robotstxt_og_diagnostics_cache' );

			restore_current_blog();
		}
	}
}

// Execute cleanup.
robotstxt_og_uninstall_cleanup();