use echo_api::{t, Sender, ServiceCtx, Store};

// DEFAULT: give yourself the auto-vhost from the network template, with your
// account name substituted for $account.
pub fn handle(me: &str, from: &Sender, ctx: &mut ServiceCtx, db: &mut dyn Store) {
    let Some(account) = from.account else {
        ctx.notice(me, from.uid, "You need to identify to NickServ first.");
        return;
    };
    let Some(template) = db.vhost_template() else {
        ctx.notice(me, from.uid, "This network has no auto-vhost template.");
        return;
    };
    // Sanitise the account into a host-safe label (lowercase, alphanumerics only).
    let label: String = account.to_ascii_lowercase().chars().filter(|c| c.is_ascii_alphanumeric()).collect();
    if label.is_empty() {
        ctx.notice(me, from.uid, "Your account name has no usable characters for a vhost.");
        return;
    }
    let generated = template.replace("$account", &label);
    let host = match super::prepare_vhost(&generated, account, db, ctx) {
        Ok(h) if !db.vhost_is_forbidden(&h) => h,
        _ => {
            ctx.notice(me, from.uid, "Sorry, a vhost couldn't be generated for your account.");
            return;
        }
    };
    match db.set_vhost(account, &host, "template", None) {
        Ok(()) => {
            ctx.apply_vhost(from.uid, &host);
            ctx.notice(me, from.uid, t!(ctx, "You now have the vhost \x02{host}\x02.", host = host));
        }
        Err(_) => ctx.notice(me, from.uid, "Sorry, that didn't work. Please try again in a moment."),
    }
}