<?php
/**
 * Runs when the plugin is deleted from the Plugins screen: removes the
 * plugin's option and every cached API answer it stored.
 *
 * @package flatin-pt
 */

if (!defined('WP_UNINSTALL_PLUGIN')) {
    exit;
}

/**
 * Remove this plugin's data from the current site.
 */
function flatin_pt_uninstall_site()
{
    global $wpdb;

    delete_option('flatin_pt_attribution');

    // Cached answers are transients named flatin_pt_*. WordPress has no API to
    // delete transients by prefix, so the rows are matched directly; the LIKE
    // pattern is escaped and bound through prepare().
    foreach (['_transient_', '_transient_timeout_'] as $kind) {
        $like = $wpdb->esc_like($kind . 'flatin_pt_') . '%';
        // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching -- one-off cleanup on uninstall; no API deletes transients by prefix.
        $wpdb->query($wpdb->prepare("DELETE FROM {$wpdb->options} WHERE option_name LIKE %s", $like));
    }
}

if (is_multisite()) {
    foreach (get_sites(['fields' => 'ids', 'number' => 0]) as $flatin_pt_site_id) {
        switch_to_blog($flatin_pt_site_id);
        flatin_pt_uninstall_site();
        restore_current_blog();
    }
} else {
    flatin_pt_uninstall_site();
}