document.addEventListener('DOMContentLoaded', function () {
    const submit = document.getElementById('submitbtn');
    submit.addEventListener('click', async () => {
        submit.disabled = true;
        const action = submit.parentElement.action;
        try {
            const resp = await fetch(action, {
                method: 'POST',
                body: JSON.stringify({
                    os: document.getElementById('os-select').value,
                    form: document.getElementById('form-select').value
                }),
                headers: {
                    "Content-Type": "application/json",
                }
            });
            if (!resp.ok) {
                throw new Error(`Response status: ${resp.status}`);
            }
            location.reload();
            return false;
        }
        catch (error) {
            console.error(error.message);
            alert(error.message);
        }
    });
});