<?php
/**
 * Uninstall handler.
 *
 * WordPress only executes this file when the plugin is deleted from the
 * Plugins screen (never on plain deactivation) — WP core guarantees that
 * via the WP_UNINSTALL_PLUGIN constant check below, so there's no risk of
 * this running during a routine deactivate/reactivate cycle.
 *
 * A plugin must never delete its data on deactivation; on uninstall the
 * site owner chooses whether to keep or remove it via the "Delete all data
 * on uninstall" checkbox in Settings (default OFF).
 */

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

/**
 * Removes the plugin's data — only when the site owner ticked "Delete all
 * data on uninstall" in Settings. Wrapped in a function so no variables
 * leak into the global scope.
 */
function qbws_uninstall_plugin_data(): void
{
    global $wpdb;

    $qbws_settings = get_option('qbws_settings', []);
    if (empty($qbws_settings['delete_data_on_uninstall'])) {
        return; // site owner's data stays intact — this is the default and safe path
    }

    $qbws_tables = [
        'qbws_product_map',
        'qbws_customer_map',
        'qbws_order_map',
        'qbws_sync_queue',
        'qbws_cache',
        'qbws_sync_log',
        'qbws_usage_events',
        'qbws_usage_counters',
        'qbws_category_map',
    ];
    foreach ($qbws_tables as $qbws_table) {
        // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching, WordPress.DB.DirectDatabaseQuery.SchemaChange -- removing this plugin's own tables on uninstall.
        $wpdb->query($wpdb->prepare('DROP TABLE IF EXISTS %i', $wpdb->prefix . $qbws_table));
    }

    delete_option('qbws_settings');
    delete_option('qbws_db_version');
    delete_option('qbws_last_order_cdc_check');
    delete_option('qbws_historical_import_state');

    // Per-user meta written onto WP user accounts during customer sync.
    foreach (['qbws_qb_id', 'qbws_qb_modified_at', 'qbws_wc_modified_at'] as $qbws_meta_key) {
        delete_metadata('user', 0, $qbws_meta_key, '', true);
    }

    // Per-order meta.
    foreach (['_qbws_wc_modified_at', '_qbws_qb_txn_id'] as $qbws_meta_key) {
        delete_metadata('post', 0, $qbws_meta_key, '', true);
    }

    wp_clear_scheduled_hook('qbws_cron_process_queue');
    wp_clear_scheduled_hook('qbws_cron_poll_qb');
    wp_clear_scheduled_hook('qbws_cron_daily_maintenance');
    wp_clear_scheduled_hook('qbws_historical_import_tick');
}

qbws_uninstall_plugin_data();