// The rule the public form uses to find the sender's address: a question whose id or label names email.
// Without one, every submission reaches the desk with nowhere to send a reply.
const EMAIL_KEYWORDS = ['email', 'e-mail'];

type FormItem = { linkId?: string; text?: string; item?: FormItem[] };

export const publicFormAsksForEmail = (items: FormItem[] | undefined): boolean =>
    (items ?? []).some((item) => {
        const haystack = `${item.linkId ?? ''} ${item.text ?? ''}`.toLowerCase();
        return EMAIL_KEYWORDS.some((keyword) => haystack.includes(keyword)) || publicFormAsksForEmail(item.item);
    });