WhatIDo/public/js/settings.js

const DIRTY_FIELDS = ['spamInterval', 'footerLeft', 'footerRight'];

function setBtnLoading(btn, on, spinnerClass) {
  if (on) {
    btn.dataset.label = btn.innerHTML;
    btn.disabled = true;
    btn.innerHTML = `<span class="spinner ${spinnerClass || ''}"></span> ${btn.dataset.loadingText || 'Обработка...'}`;
  } else {
    btn.disabled = false;
    btn.innerHTML = btn.dataset.label || btn.innerHTML;
  }
}

function updateDirty() {
  const dirty = DIRTY_FIELDS.some(id => {
    const el = document.getElementById(id);
    return String(el.dataset.original ?? '') !== el.value;
  });
  document.getElementById('saveBar').classList.toggle('show', dirty);
}

function bindDirty() {
  DIRTY_FIELDS.forEach(id => {
    document.getElementById(id).addEventListener('input', updateDirty);
  });
}

function snapshotDirty() {
  DIRTY_FIELDS.forEach(id => {
    document.getElementById(id).dataset.original = document.getElementById(id).value;
  });
  updateDirty();
}

async function loadSettings() {
  const [sRes, stRes] = await Promise.all([
    fetch(`${API}/api/settings`, { headers: hdr() }),
    fetch(`${API}/api/stats`, { headers: hdr() }),
  ]);
  const s = await sRes.json();
  if (s.spam_interval_min !== undefined) document.getElementById('spamInterval').value = s.spam_interval_min;
  document.getElementById('footerLeft').value = s.footer_left || '';
  document.getElementById('footerRight').value = s.footer_right || '';
  snapshotDirty();
  if (stRes.ok) {
    const st = await stRes.json();
    document.getElementById('dataStats').innerHTML = `
      <span class="chip">Записей: <b>${st.entries}</b></span>
      <span class="chip">Учеников: <b>${st.students}</b></span>
      <span class="chip">Групп: <b>${st.groups}</b></span>
      <span class="chip">Сегодня: <b>${st.today}</b></span>
      <span class="chip">${st.trash ? `В корзине: <b>${st.trash}</b> <a href="trash.html">→</a>` : ''}</span>
    `;
  } else {
    document.getElementById('dataStats').innerHTML = '';
  }

  const siRes = await fetch(`${API}/api/system-info`, { headers: hdr() });
  if (siRes.ok) {
    const si = await siRes.json();
    renderSystemInfo(si);
  } else {
    document.getElementById('systemInfo').innerHTML = '<div class="sys-card err">Ошибка загрузки</div>';
  }
}

function renderSystemInfo(si) {
  const db = si.database || {};
  const photos = si.photos || {};
  const files = si.files || {};
  const uploads = si.uploads || {};
  const disk = si.disk;

  let tablesHtml = '';
  if (db.tables && db.tables.length) {
    tablesHtml = '<details class="sys-details"><summary>Таблицы БД</summary><div class="sys-table-list">' +
      db.tables.map(t => `<div class="sys-table-row"><span>${t.name}</span><span>${t.size}</span></div>`).join('') +
      '</div></details>';
  }

  let diskHtml = '';
  if (disk) {
    const pct = disk.used_pct;
    const color = pct > 90 ? '#ef4444' : pct > 70 ? '#f59e0b' : '#16a34a';
    diskHtml = `
      <div class="sys-item">
        <span class="sys-label">Диск</span>
        <span class="sys-value">${disk.used} / ${disk.total}</span>
      </div>
      <div class="sys-bar-wrap">
        <div class="sys-bar" style="width:${pct}%; background:${color}"></div>
      </div>
      <div class="sys-meta">Свободно: ${disk.free} (${100 - pct}%)</div>
    `;
  }

  document.getElementById('systemInfo').innerHTML = `
    <div class="sys-card">
      <div class="sys-title">База данных</div>
      <div class="sys-item"><span class="sys-label">Размер</span><span class="sys-value">${db.size || '—'}</span></div>
      ${tablesHtml}
    </div>
    <div class="sys-card">
      <div class="sys-title">Фото</div>
      <div class="sys-item"><span class="sys-label">Фото групп</span><span class="sys-value">${photos.group_photos?.count || 0} · ${photos.group_photos?.size || '0 B'}</span></div>
      <div class="sys-item"><span class="sys-label">Фото в записях</span><span class="sys-value">${photos.entry_photos?.count || 0} · ${photos.entry_photos?.size || '0 B'}</span></div>
      <div class="sys-item"><span class="sys-label">Всего</span><span class="sys-value"><b>${photos.total_count || 0}</b> · <b>${photos.total_size || '0 B'}</b></span></div>
    </div>
    <div class="sys-card">
      <div class="sys-title">Файлы</div>
      <div class="sys-item"><span class="sys-label">Проектные файлы</span><span class="sys-value">${files.project_files?.count || 0}</span></div>
    </div>
    <div class="sys-card">
      <div class="sys-title">Загрузки</div>
      <div class="sys-item"><span class="sys-label">Файлов</span><span class="sys-value">${uploads.count || 0}</span></div>
      <div class="sys-item"><span class="sys-label">Размер</span><span class="sys-value">${uploads.size || '0 B'}</span></div>
    </div>
    <div class="sys-card">
      <div class="sys-title">Диск</div>
      ${diskHtml || '<div class="sys-meta">Недоступно</div>'}
    </div>
  `;
}

async function saveSettings() {
  const v = document.getElementById('spamInterval').value;
  if (v === '' || Number(v) < 1) { alert('Введите число от 1'); return; }
  const btn = document.getElementById('saveBtn');
  btn.dataset.loadingText = 'Сохранение...';
  setBtnLoading(btn, true);
  try {
    const res = await fetch(`${API}/api/settings`, {
      method: 'PUT',
      headers: hdrJson(),
      body: JSON.stringify({ settings: {
        spam_interval_min: String(Math.round(Number(v))),
        footer_left: document.getElementById('footerLeft').value.trim(),
        footer_right: document.getElementById('footerRight').value.trim(),
      } })
    });
    if (res.ok) {
      showToast('Настройки сохранены');
      snapshotDirty();
    } else { const e = await res.json(); alert(e.error); }
  } finally {
    setBtnLoading(btn, false);
  }
}

async function downloadBackup() {
  const btn = document.getElementById('backupBtn');
  btn.dataset.loadingText = 'Формирование...';
  setBtnLoading(btn, true);
  try {
    const res = await fetch(`${API}/api/backup`, { headers: hdr() });
    if (!res.ok) { const t = await res.text(); alert('Ошибка: ' + t); return; }
    const blob = await res.blob();
    const cd = res.headers.get('Content-Disposition') || '';
    const m = cd.match(/filename="([^"]+)"/);
    const name = m ? m[1] : `whatido-backup-${new Date().toISOString().slice(0, 10)}.json.gz`;
    const url = URL.createObjectURL(blob);
    const a = document.createElement('a');
    a.href = url;
    a.download = name;
    a.click();
    URL.revokeObjectURL(url);
    showToast('Бэкап скачан');
  } finally {
    setBtnLoading(btn, false);
  }
}

document.getElementById('restoreFile').addEventListener('change', async (e) => {
  const file = e.target.files[0];
  if (!file) return;
  if (!confirm('Восстановление заменит все текущие данные. Продолжить?')) { e.target.value = ''; return; }
  const st = document.getElementById('restoreStatus');
  const backupBtn = document.getElementById('backupBtn');
  const restoreBtn = document.getElementById('restoreBtn');
  st.classList.remove('err');
  st.innerHTML = '<span class="spinner dark"></span> Восстановление...';
  backupBtn.disabled = true;
  restoreBtn.disabled = true;
  const fd = new FormData();
  fd.append('backup', file);
  let res;
  try {
    res = await fetch(`${API}/api/restore`, { method: 'POST', headers: hdr(), body: fd });
  } catch (err) {
    st.textContent = '';
    alert('Ошибка сети: ' + err.message);
    e.target.value = '';
    return;
  } finally {
    backupBtn.disabled = false;
    restoreBtn.disabled = false;
  }
  if (res.ok) {
    showToast('Данные восстановлены');
    st.textContent = '';
    loadSettings();
  } else {
    st.classList.add('err');
    st.innerHTML = 'Ошибка восстановления';
    const t = await res.text();
    alert('Ошибка: ' + t);
  }
  e.target.value = '';
});

document.getElementById('backupBtn').addEventListener('click', downloadBackup);
document.getElementById('restoreBtn').addEventListener('click', () => document.getElementById('restoreFile').click());
document.getElementById('saveBtn').addEventListener('click', saveSettings);

(async () => {
  if (await requireAdminPage()) {
    buildSidebar(document.body.dataset.page);
    bindDirty();
    loadSettings();
  }
})();