class.ilForumThreadSettingsSessionStorage.php

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<?php

declare(strict_types=1);

class ilForumThreadSettingsSessionStorage
{
    private string $key;

    public function __construct(string $session_key)
    {
        $this->key = $session_key;
    }

    private function getSessionCollection(): array
    {
        $frm_sess = ilSession::get('frm_sess');
        if (!is_array($frm_sess)) {
            $frm_sess = [];
        }

        if (!isset($frm_sess[$this->key]) || !is_array($frm_sess[$this->key])) {
            $frm_sess[$this->key] = [];
        }

        return $frm_sess;
    }

    public function get(int $thread_id, $default = null)
    {
        $frm_sess = $this->getSessionCollection();

        return $frm_sess[$this->key][$thread_id] ?? $default;
    }

    public function set(int $thread_id, $value): void
    {
        $frm_sess = $this->getSessionCollection();

        $frm_sess[$this->key][$thread_id] = $value;

        ilSession::set('frm_sess', $frm_sess);
    }
}