<?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(): void {
	// 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;
	}

	// All plugin options (general, social, platform integration, mobile/web-app).
	$options = array(
		'robotstxt_og_fallback_image',
		'robotstxt_og_homepage_image',
		'robotstxt_og_enable_facebook',
		'robotstxt_og_enable_twitter',
		'robotstxt_og_twitter_card_type',
		'robotstxt_og_twitter_site',
		'robotstxt_og_fb_app_id',
		'robotstxt_og_fb_admins',
		'robotstxt_og_fb_pages',
		'robotstxt_og_pinterest_verify',
		'robotstxt_og_pinterest_nopin',
		'robotstxt_og_telegram_channel',
		'robotstxt_og_slack_app_id',
		'robotstxt_og_theme_color',
		'robotstxt_og_app_name',
		'robotstxt_og_web_app_capable',
		'robotstxt_og_app_status_bar_style',
		'robotstxt_og_format_detection',
		'robotstxt_og_delete_data_on_uninstall',
	);

	foreach ( $options as $option_name ) {
		delete_option( $option_name );
	}

	// 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.
	foreach ( array( '_og_image_fallback_url', '_og_title', '_og_description', '_og_image_alt', '_og_type', '_twitter_creator' ) as $post_meta_key ) {
		$wpdb->query(
			$wpdb->prepare(
				"DELETE FROM {$wpdb->postmeta} WHERE meta_key = %s",
				$post_meta_key
			)
		);
	}

	// Delete all term-level OG meta (per-term overrides + cached taxonomy fallback).
	foreach ( array( '_og_title', '_og_image', '_og_description', '_og_image_alt', '_og_image_fallback_url' ) as $term_meta_key ) {
		$wpdb->query(
			$wpdb->prepare(
				"DELETE FROM {$wpdb->termmeta} WHERE meta_key = %s",
				$term_meta_key
			)
		);
	}
	// 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( (int) $site->blog_id );

			// Delete site-specific options.
			foreach ( $options as $option_name ) {
				delete_option( $option_name );
			}

			// 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.
			foreach ( array( '_og_image_fallback_url', '_og_title', '_og_description', '_og_image_alt', '_og_type', '_twitter_creator' ) as $post_meta_key ) {
				$wpdb->query(
					$wpdb->prepare(
						"DELETE FROM {$wpdb->postmeta} WHERE meta_key = %s",
						$post_meta_key
					)
				);
			}

			// Delete all term-level OG meta (per-term overrides + cached taxonomy fallback).
			foreach ( array( '_og_title', '_og_image', '_og_description', '_og_image_alt', '_og_image_fallback_url' ) as $term_meta_key ) {
				$wpdb->query(
					$wpdb->prepare(
						"DELETE FROM {$wpdb->termmeta} WHERE meta_key = %s",
						$term_meta_key
					)
				);
			}
			// 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();