<?php
/** Ownership-safe persistence for an initial code-free connection session. */
if (!defined('ABSPATH')) {
    exit;
}
class Akkedli_V2_Session_Setup
{
    public static function create(array $state)
    {
        if (!Akkedli_V2_Session_State::valid($state)) return false;
        try {
            $encrypted = Akkedli_V2_Crypto::encrypt($state);
        } catch (Throwable $error) { unset($error); return false; }
        if (!add_option(Akkedli_V2_Session_State::OPTION, $encrypted, '', 'no')) return false;
        self::clear_cache();
        $stored = Akkedli_V2_Session_State::load();
        $verified = is_array($stored) && hash_equals(
            wp_json_encode($state, JSON_UNESCAPED_SLASHES),
            wp_json_encode($stored, JSON_UNESCAPED_SLASHES)
        );
        if (!$verified) self::compare_and_delete($encrypted);
        unset($encrypted, $stored);
        return $verified;
    }
    public static function delete_owned($session)
    {
        $missing = new stdClass();
        $encrypted = get_option(Akkedli_V2_Session_State::OPTION, $missing);
        if ($encrypted === $missing) return true;
        $stored = Akkedli_V2_Session_State::load();
        if (!is_array($stored) || !is_string($session)
            || !hash_equals($stored['session'], $session)) return false;
        return self::compare_and_delete($encrypted)
            && !Akkedli_V2_Session_State::exists();
    }
    private static function compare_and_delete($encrypted)
    {
        global $wpdb;
        $deleted = $wpdb->query($wpdb->prepare(
            "DELETE FROM {$wpdb->options} WHERE option_name=%s AND option_value=%s",
            Akkedli_V2_Session_State::OPTION, maybe_serialize($encrypted)
        ));
        self::clear_cache();
        if (1 === $deleted) Akkedli_V2_Session_Retry::clear();
        return 1 === $deleted;
    }
    private static function clear_cache()
    {
        wp_cache_delete(Akkedli_V2_Session_State::OPTION, 'options');
        wp_cache_delete('alloptions', 'options');
        wp_cache_delete('notoptions', 'options');
    }
}