<?php
/**
 * Uninstall.
 *
 * Always removed: scheduled events, transients, the digest queue and trivial plugin options.
 * Removed ONLY when "Delete data on uninstall" is ticked (Logs Settings > Privacy & Data):
 * the {prefix}ld_enrollment_logs table, the settings and the database version option.
 * Otherwise the audit trail and settings are kept so a reinstall reuses them.
 * Runs once per site on multisite.
 *
 * @package Enrollment_Verifier_Logger
 */

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

/**
 * Clean up one site.
 *
 * @return void
 */
function evlfl_uninstall_site() {
	global $wpdb;

	foreach ( array( 'evlfl_send_digest', 'evlfl_send_overflow', 'evlfl_cleanup' ) as $hook ) {
		wp_clear_scheduled_hook( $hook );
	}
	delete_option( 'evlfl_plugin_version' );
	delete_option( 'evlfl_activated_at' );
	delete_option( 'evlfl_pending_digest' );

	// Hourly rate-limit counters.
	$like = $wpdb->esc_like( '_transient_evlfl_mail_rate_' ) . '%';
	$wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->options} WHERE option_name LIKE %s OR option_name LIKE %s", $like, $wpdb->esc_like( '_transient_timeout_evlfl_mail_rate_' ) . '%' ) ); // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.NoCaching -- One-off uninstall clean-up of this plugin's own transients.

	$settings = get_option( 'evlfl_settings', array() );
	$wipe     = is_array( $settings ) && ! empty( $settings['privacy']['delete_on_uninstall'] );
	if ( $wipe ) {
		$table = $wpdb->prefix . 'ld_enrollment_logs';
		$wpdb->query( "DROP TABLE IF EXISTS `{$table}`" ); // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.SchemaChange,WordPress.DB.PreparedSQL.InterpolatedNotPrepared -- Plugin-owned table named from $wpdb->prefix; opted in by the site owner.
		delete_option( 'evlfl_settings' );
		delete_option( 'evlfl_db_version' );
	}
}

if ( is_multisite() ) {
	foreach ( get_sites( array( 'fields' => 'ids', 'number' => 0 ) ) as $evlfl_site_id ) { // phpcs:ignore WordPress.WP.PostsPerPage -- Clean-up must visit every site.
		switch_to_blog( (int) $evlfl_site_id );
		evlfl_uninstall_site();
		restore_current_blog();
	}
} else {
	evlfl_uninstall_site();
}