(function () {
    // IBAN: tylko cyfry, auto-grupowanie co 4 (po prefiksie PL)
    const iban = document.getElementById('numer_konta');
    if (iban) {
        iban.addEventListener('input', () => {
            const digits = iban.value.replace(/\\D/g, '').slice(0, 26); // 26 cyfr po "PL"
            const chunked = digits.replace(/(.{4})/g, '$1 ').trim();
            iban.value = chunked;
        });
    }

    // Telefon BLIK: tylko cyfry, format 3-3-3
    const tel = document.getElementById('numer_telefonu_blik');
    if (tel) {
        tel.addEventListener('input', () => {
            const digits = tel.value.replace(/\\D/g, '').slice(0, 9);
            const parts = [];
            if (digits.length > 0) parts.push(digits.substring(0, 3));
            if (digits.length > 3) parts.push(digits.substring(3, 6));
            if (digits.length > 6) parts.push(digits.substring(6, 9));
            tel.value = parts.join(' ');
        });
    }

    // Biała lista IP/hostów — helpery
    const ta = document.getElementById('allowed_login_hosts');
    const count = document.getElementById('hostsCount');
    const addBtn = document.getElementById('btn-add-host');
    const addMyBtn = document.getElementById('btn-add-my-ip');
    const input = document.getElementById('host_input');

    function parseList(text) {
        // akceptuj przecinki, średniki i nowe linie; trimuj; usuń puste
        return text
            .split(/[\\n,;]+/)
            .map(s => s.trim())
            .filter(Boolean);
    }
    function formatList(arr) {
        return arr.join('\\n');
    }
    function dedupe(arr) {
        const seen = new Set();
        const out = [];
        for (const v of arr) {
            const k = v.toLowerCase();
            if (!seen.has(k)) { seen.add(k); out.push(v); }
        }
        return out;
    }
    function updateCount() {
        if (!ta || !count) return;
        count.textContent = parseList(ta.value).length.toString();
    }
    function addEntry(val) {
        if (!ta || !val) return;
        const list = dedupe([...parseList(ta.value), val]);
        ta.value = formatList(list);
        updateCount();
    }

    if (ta) {
        ta.addEventListener('input', updateCount);
        // inicjalny przelicznik
        updateCount();
    }

    if (addBtn && input) {
        addBtn.addEventListener('click', () => {
            const val = (input.value || '').trim();
            if (!val) return;
            addEntry(val);
            input.value = '';
            input.focus();
        });
    }

    if (addMyBtn) {
        addMyBtn.addEventListener('click', () => {
            const ip = addMyBtn.dataset.myIp || '';
            if (ip) addEntry(ip);
        });
    }

    const dedupeBtn = document.getElementById('btn-dedupe');
    if (dedupeBtn && ta) {
        dedupeBtn.addEventListener('click', () => {
            ta.value = formatList(dedupe(parseList(ta.value)));
            updateCount();
        });
    }
})();