// ── documenti_export.js — Excel & PDF export ──
// Depends on _Doc namespace. Export uses ALL filter-visible blocks (not just current page).

document.getElementById('btn-excel').addEventListener('click', function() {
  var csvRows = [['Sessione', 'Corso', 'Azienda', 'Cartella', 'Tipo', 'Stato', 'File', 'Note', 'Caricato']];
  _Doc.blocks.forEach(function(block) {
    if (block.style.display === 'none') return;  // filter-hidden: skip
    var sessione = block.dataset.sessione || '';
    var corso    = block.dataset.corso    || '';
    var azienda  = block.dataset.azienda  || '';
    block.querySelectorAll('.doc-row').forEach(function(row) {
      if (row.style.display === 'none') return;
      csvRows.push([
        sessione, corso, azienda,
        row.dataset.subfolder || '',
        row.dataset.doctype   || '',
        row.dataset.status    || '',
        row.dataset.filename  || '',
        row.dataset.note      || '',
        row.dataset.uploaded  || '',
      ]);
    });
  });
  var csv = csvRows.map(function(r) {
    return r.map(function(v) {
      var s = String(v).replace(/"/g, '""');
      return (s.indexOf(',') !== -1 || s.indexOf('"') !== -1 || s.indexOf('\n') !== -1) ? '"' + s + '"' : s;
    }).join(',');
  }).join('\r\n');
  var blob = new Blob(['\uFEFF' + csv], { type: 'text/csv;charset=utf-8;' });
  var url  = URL.createObjectURL(blob);
  var a    = document.createElement('a');
  a.href     = url;
  a.download = 'documenti_' + new Date().toISOString().slice(0, 10) + '.csv';
  document.body.appendChild(a);
  a.click();
  document.body.removeChild(a);
  URL.revokeObjectURL(url);
});

document.getElementById('btn-pdf').addEventListener('click', function() {
  // Temporarily show all filter-visible blocks (including pag-hidden) for print
  var pagHidden = _Doc.blocks.filter(function(b) { return b.classList.contains('pag-hidden'); });
  pagHidden.forEach(function(b) { b.classList.remove('pag-hidden'); });

  var wasOpen = _Doc.blocks.map(function(b) { return b.open; });
  _Doc.blocks.forEach(function(b) {
    if (b.style.display === 'none') {
      b.classList.add('print-hidden');
    } else {
      var visibleRows = Array.prototype.filter.call(b.querySelectorAll('.doc-row'), function(r) { return r.style.display !== 'none'; });
      if (visibleRows.length === 0) { b.classList.add('print-hidden'); } else { b.open = true; }
    }
  });
  document.querySelectorAll('.doc-row').forEach(function(r) {
    if (r.style.display === 'none') r.classList.add('print-hidden');
  });

  window.print();

  // Restore state
  _Doc.blocks.forEach(function(b, i) { b.classList.remove('print-hidden'); b.open = wasOpen[i]; });
  document.querySelectorAll('.doc-row.print-hidden').forEach(function(r) { r.classList.remove('print-hidden'); });
  pagHidden.forEach(function(b) { b.classList.add('pag-hidden'); });
});