<?php
/**
 * Removes what the plugin stored: its options, its transients, its scheduled refreshes, on every site of a network.
 * Post content keeps the block comments; without the plugin they print nothing (decision 0002). An OAuth connection is
 * ended at SR Anywhere too, best effort; a pasted connection key is ended in SR Anywhere's Settings → Connections (the
 * service has no route to revoke it from here; decision 0008).
 *
 * @package SRAnywhere
 */

defined( 'WP_UNINSTALL_PLUGIN' ) || exit;

/**
 * Cleans one site.
 */
function sranywhere_uninstall_site() {
	global $wpdb;
	sranywhere_uninstall_revoke();
	foreach ( array( 'sranywhere_connection', 'sranywhere_oauth_client', 'sranywhere_refresh_lock', 'sranywhere_cache_generation', 'sranywhere_api_generation', 'sranywhere_keys' ) as $option ) {
		delete_option( $option );
	}
	// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching -- one clean-up on uninstall; transients have no API to list them.
	$wpdb->query(
		$wpdb->prepare(
			"DELETE FROM {$wpdb->options} WHERE option_name LIKE %s OR option_name LIKE %s",
			$wpdb->esc_like( '_transient_sranywhere_' ) . '%',
			$wpdb->esc_like( '_transient_timeout_sranywhere_' ) . '%'
		)
	);
	wp_unschedule_hook( 'sranywhere_refresh_start' );
	wp_unschedule_hook( 'sranywhere_refresh_connection' );
}

/**
 * Ends an OAuth connection at SR Anywhere, best effort, without loading the plugin (OAuth.php, Connection::disconnect()).
 */
function sranywhere_uninstall_revoke() {
	$record = get_option( 'sranywhere_connection', array() );
	if ( ! is_array( $record ) || 'oauth' !== ( $record['kind'] ?? '' ) ) {
		return;
	}
	require_once __DIR__ . '/includes/Config.php';
	require_once __DIR__ . '/includes/Crypto.php';
	$token = SRAnywhere\Crypto::open( $record['refresh'] ?? '' );
	if ( null === $token ) {
		return;
	}
	wp_remote_post(
		SRAnywhere\Config::api_url() . '/api/oauth/revoke',
		array(
			'timeout'     => 5,
			'redirection' => 0,
			'body'        => array(
				'token'           => $token,
				'token_type_hint' => 'refresh_token',
				'client_id'       => (string) ( $record['client_id'] ?? '' ),
			),
		)
	);
}

if ( is_multisite() ) {
	foreach ( get_sites( array( 'fields' => 'ids' ) ) as $sranywhere_site ) {
		switch_to_blog( $sranywhere_site );
		sranywhere_uninstall_site();
		restore_current_blog();
	}
} else {
	sranywhere_uninstall_site();
}