function doImport(url) {
    const file = document.getElementById('importFile').files[0];
    if (!file) {
        Swal.fire({ icon: 'warning', title: 'Perhatian', text: 'Pilih file Excel terlebih dahulu.', timer: 2000, showConfirmButton: false });
        return;
    }

    const btn = document.getElementById('btnImport');
    btn.disabled = true;
    btn.innerHTML = '<span class="spinner-border spinner-border-sm me-1"></span>Memproses...';

    const fd = new FormData();
    fd.append('file', file);
    fd.append('_token', CSRF);

    fetch(url, { method: 'POST', body: fd })
        .then(r => r.json())
        .then(res => {
            btn.disabled = false;
            btn.innerHTML = '<i class="bx bx-upload me-1"></i> Import';

            const resultDiv  = document.getElementById('importResult');
            const msgDiv     = document.getElementById('importMsg');
            const errorsDiv  = document.getElementById('importErrors');

            resultDiv.style.display = 'block';
            msgDiv.className = 'alert ' + (res.errors && res.errors.length ? 'alert-warning' : 'alert-success');
            msgDiv.textContent = res.message;

            if (res.errors && res.errors.length) {
                errorsDiv.innerHTML = res.errors.map(e => `<div>⚠ ${e}</div>`).join('');
            } else {
                errorsDiv.innerHTML = '';
            }

            if (typeof tbl !== 'undefined') tbl.ajax.reload(null, false);
            if (typeof table !== 'undefined') table.ajax.reload(null, false);
            if (typeof dt !== 'undefined') dt.ajax.reload(null, false);
        })
        .catch(() => {
            btn.disabled = false;
            btn.innerHTML = '<i class="bx bx-upload me-1"></i> Import';
            Swal.fire({ icon: 'error', title: 'Error', text: 'Gagal menghubungi server.' });
        });
}

document.getElementById('modalImport').addEventListener('hidden.bs.modal', function () {
    document.getElementById('importFile').value = '';
    document.getElementById('importResult').style.display = 'none';
    document.getElementById('importErrors').innerHTML = '';
});