<?php
/**
 * Deletion of the plugin. The data of a site is removed only when its setting "Uninstall" asks for it; on a network,
 * each site follows its own setting. The data of Custom Product Tabs (YIKES) is never touched.
 *
 * @package Prodtabs
 */

defined( 'WP_UNINSTALL_PLUGIN' ) || exit;

$prodtabs_uninstall = static function () {
	global $wpdb;
	$settings = get_option( 'prodtabs_settings', array() );
	if ( ! is_array( $settings ) || empty( $settings['delete_data'] ) ) {
		return;
	}

	// Library tabs, with their revisions and meta. The post type is no longer registered here, so WordPress does not
	// see the language taxonomies of Polylang: their links, and the translation groups left empty, are removed first.
	// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching -- one-off cleanup.
	$ids    = array_map( 'intval', $wpdb->get_col( $wpdb->prepare( "SELECT ID FROM {$wpdb->posts} WHERE post_type = %s", 'prodtabs_tab' ) ) );
	$groups = array();
	foreach ( $ids as $id ) {
		if ( taxonomy_exists( 'post_translations' ) ) {
			$terms  = wp_get_object_terms( $id, 'post_translations', array( 'fields' => 'ids' ) );
			$groups = array_merge( $groups, is_array( $terms ) ? $terms : array() );
		}
		foreach ( array( 'language', 'post_translations' ) as $taxonomy ) {
			if ( taxonomy_exists( $taxonomy ) ) {
				wp_delete_object_term_relationships( $id, $taxonomy );
			}
		}
		wp_delete_post( $id, true );
	}
	foreach ( array_unique( array_map( 'intval', $groups ) ) as $term_id ) {
		wp_delete_term( $term_id, 'post_translations' );
	}

	// Tabs of the products, import marks and the tabs kept for the undo of the import.
	foreach ( array( '_prodtabs_layout', '_prodtabs_texts', '_prodtabs_yikes_import', '_prodtabs_yikes_backup' ) as $key ) {
		delete_post_meta_by_key( $key );
	}

	delete_option( 'prodtabs_settings' );
	delete_option( 'prodtabs_import' );
	delete_option( 'prodtabs_import_settings' );
	delete_metadata( 'user', 0, 'prodtabs_welcome_dismissed', '', true );
	delete_metadata( 'user', 0, 'prodtabs_yikes_notice_dismissed', '', true );
};

if ( is_multisite() ) {
	foreach ( get_sites(
		array(
			'fields' => 'ids',
			'number' => 0,
		)
	) as $prodtabs_site ) {
		switch_to_blog( (int) $prodtabs_site );
		$prodtabs_uninstall();
		restore_current_blog();
	}
} else {
	$prodtabs_uninstall();
}