'use strict';
const APP_VERSION = 'v4-20260222';

// ============================================================
// OPS Dashboard — Vanilla JS Application (v4)
// ============================================================

// ---------------------------------------------------------------------------
// State
// ---------------------------------------------------------------------------
let allServices = [];
let currentPage = 'dashboard';
let viewMode = 'cards';           // 'cards' | 'table'
let tableFilter = null;           // null | 'healthy' | 'down' | 'project:name' | 'env:name'
let tableFilterLabel = '';
let drillLevel = 0;               // 0=projects, 1=environments, 2=services
let drillProject = null;
let drillEnv = null;
let refreshTimer = null;
const REFRESH_INTERVAL = 30000;

// Backup filter state
let backupFilterProject = null;  // null = all
let backupFilterEnv = null;      // null = all

// Log modal state
let logCtx = { project: null, env: null, service: null };

// ---------------------------------------------------------------------------
// Helpers
// ---------------------------------------------------------------------------
function fmtBytes(b) {
  if (b == null) return '\u2014';
  const n = Number(b);
  if (isNaN(n) || n === 0) return '0 B';
  const k = 1024, s = ['B', 'KB', 'MB', 'GB', 'TB'];
  const i = Math.floor(Math.log(Math.abs(n)) / Math.log(k));
  return (n / Math.pow(k, i)).toFixed(i === 0 ? 0 : 1) + ' ' + s[i];
}

function esc(str) {
  const d = document.createElement('div');
  d.textContent = str;
  return d.innerHTML;
}

function dotClass(status, health) {
  const s = (status || '').toLowerCase(), h = (health || '').toLowerCase();
  if (s === 'up' && (h === 'healthy' || !h)) return 'status-dot-green';
  if (s === 'up' && h === 'unhealthy') return 'status-dot-red';
  if (s === 'up' && h === 'starting') return 'status-dot-yellow';
  if (s === 'down' || s === 'exited') return 'status-dot-red';
  return 'status-dot-gray';
}

function badgeCls(status, health) {
  const s = (status || '').toLowerCase(), h = (health || '').toLowerCase();
  if (s === 'up' && (h === 'healthy' || !h)) return 'badge-green';
  if (s === 'up' && h === 'unhealthy') return 'badge-red';
  if (s === 'up' && h === 'starting') return 'badge-yellow';
  if (s === 'down' || s === 'exited') return 'badge-red';
  return 'badge-gray';
}

function diskColor(pct) {
  const n = parseInt(pct);
  if (n >= 90) return 'disk-danger';
  if (n >= 75) return 'disk-warn';
  return 'disk-ok';
}

function isHealthy(svc) {
  return svc.status === 'Up' && (svc.health === 'healthy' || !svc.health);
}

function isDown(svc) { return !isHealthy(svc); }

function filterServices(list) {
  if (!tableFilter) return list;
  if (tableFilter === 'healthy') return list.filter(isHealthy);
  if (tableFilter === 'down') return list.filter(isDown);
  if (tableFilter.startsWith('project:')) {
    const p = tableFilter.slice(8);
    return list.filter(s => s.project === p);
  }
  if (tableFilter.startsWith('env:')) {
    const e = tableFilter.slice(4);
    return list.filter(s => s.env === e);
  }
  return list;
}

// ---------------------------------------------------------------------------
// Auth
// ---------------------------------------------------------------------------
function getToken() { return localStorage.getItem('ops_token'); }

function doLogin() {
  const input = document.getElementById('login-token');
  const err = document.getElementById('login-error');
  const token = input.value.trim();
  if (!token) { err.textContent = 'Please enter a token'; err.style.display = 'block'; return; }
  err.style.display = 'none';
  fetch('/api/status/', { headers: { 'Authorization': 'Bearer ' + token } })
    .then(r => { if (!r.ok) throw new Error(); return r.json(); })
    .then(data => {
      localStorage.setItem('ops_token', token);
      allServices = data;
      document.getElementById('login-overlay').style.display = 'none';
      document.getElementById('app').style.display = 'flex';
      const vEl = document.getElementById('app-version'); if (vEl && typeof APP_VERSION !== 'undefined') vEl.textContent = APP_VERSION;
      showPage('dashboard');
      startAutoRefresh();
    })
    .catch(() => { err.textContent = 'Invalid token.'; err.style.display = 'block'; });
}

function doLogout() {
  localStorage.removeItem('ops_token');
  stopAutoRefresh();
  document.getElementById('app').style.display = 'none';
  document.getElementById('login-overlay').style.display = 'flex';
  document.getElementById('login-token').value = '';
}

// ---------------------------------------------------------------------------
// API
// ---------------------------------------------------------------------------
async function api(path, opts = {}) {
  const token = getToken();
  const headers = { ...(opts.headers || {}), 'Authorization': 'Bearer ' + token };
  const resp = await fetch(path, { ...opts, headers });
  if (resp.status === 401) { doLogout(); throw new Error('Session expired'); }
  if (!resp.ok) { const b = await resp.text(); throw new Error(b || 'HTTP ' + resp.status); }
  const ct = resp.headers.get('content-type') || '';
  return ct.includes('json') ? resp.json() : resp.text();
}

async function fetchStatus() { allServices = await api('/api/status/'); }

// ---------------------------------------------------------------------------
// Toast
// ---------------------------------------------------------------------------
function toast(msg, type = 'info') {
  const c = document.getElementById('toast-container');
  const el = document.createElement('div');
  el.className = 'toast toast-' + type;
  el.innerHTML = `<span>${esc(msg)}</span><span class="toast-dismiss" onclick="this.parentElement.remove()">&times;</span>`;
  c.appendChild(el);
  setTimeout(() => { el.classList.add('toast-out'); setTimeout(() => el.remove(), 200); }, 4000);
}

// ---------------------------------------------------------------------------
// Navigation
// ---------------------------------------------------------------------------
function toggleSidebar() {
  document.getElementById('sidebar').classList.toggle('open');
  document.getElementById('mobile-overlay').classList.toggle('open');
}

function showPage(page) {
  currentPage = page;
  drillLevel = 0; drillProject = null; drillEnv = null;
  if (page !== 'dashboard') { viewMode = 'cards'; tableFilter = null; tableFilterLabel = ''; }

  document.querySelectorAll('#sidebar-nav .sidebar-link').forEach(el =>
    el.classList.toggle('active', el.dataset.page === page));
  document.getElementById('sidebar').classList.remove('open');
  document.getElementById('mobile-overlay').classList.remove('open');

  renderPage();
}

function renderPage() {
  const c = document.getElementById('page-content');
  c.innerHTML = '<div style="text-align:center;padding:3rem;"><div class="spinner spinner-lg"></div></div>';
  updateViewToggle();

  switch (currentPage) {
    case 'dashboard': renderDashboard(); break;
    case 'backups':   renderBackups(); break;
    case 'system':    renderSystem(); break;
    case 'restore':   renderRestore(); break;
    default:          renderDashboard();
  }
}

function refreshCurrentPage() {
  showSpin();
  fetchStatus().then(() => renderPage()).catch(e => toast('Refresh failed: ' + e.message, 'error')).finally(hideSpin);
}

// ---------------------------------------------------------------------------
// View Mode & Filters
// ---------------------------------------------------------------------------
function setViewMode(mode) {
  viewMode = mode;
  if (mode === 'cards') { tableFilter = null; tableFilterLabel = ''; }
  updateViewToggle();
  renderDashboard();
}

function setTableFilter(filter, label) {
  tableFilter = filter;
  tableFilterLabel = label || filter;
  viewMode = 'table';
  updateViewToggle();
  renderDashboard();
}

function clearFilter() {
  tableFilter = null; tableFilterLabel = '';
  renderDashboard();
}

function updateViewToggle() {
  const wrap = document.getElementById('view-toggle-wrap');
  const btnCards = document.getElementById('btn-view-cards');
  const btnTable = document.getElementById('btn-view-table');
  if (currentPage === 'dashboard') {
    wrap.style.display = '';
    btnCards.classList.toggle('active', viewMode === 'cards');
    btnTable.classList.toggle('active', viewMode === 'table');
  } else {
    wrap.style.display = 'none';
  }
}

// ---------------------------------------------------------------------------
// Auto-refresh
// ---------------------------------------------------------------------------
function startAutoRefresh() {
  stopAutoRefresh();
  refreshTimer = setInterval(() => {
    fetchStatus().then(() => { if (currentPage === 'dashboard') renderPage(); }).catch(() => {});
  }, REFRESH_INTERVAL);
}
function stopAutoRefresh() { if (refreshTimer) { clearInterval(refreshTimer); refreshTimer = null; } }
function showSpin() { document.getElementById('refresh-indicator').classList.remove('paused'); }
function hideSpin() { document.getElementById('refresh-indicator').classList.add('paused'); }

// ---------------------------------------------------------------------------
// Breadcrumbs
// ---------------------------------------------------------------------------
function updateBreadcrumbs() {
  const bc = document.getElementById('breadcrumbs');
  let h = '';

  if (currentPage === 'dashboard') {
    if (viewMode === 'table') {
      h = '<a onclick="setViewMode(\'cards\')">Dashboard</a><span class="sep">/</span>';
      h += '<span class="current">All Services</span>';
      if (tableFilter) {
        h += '&nbsp;<span class="filter-badge">' + esc(tableFilterLabel) +
             ' <button onclick="clearFilter()">&times;</button></span>';
      }
    } else if (drillLevel === 0) {
      h = '<span class="current">Dashboard</span>';
    } else if (drillLevel === 1) {
      h = '<a onclick="drillBack(0)">Dashboard</a><span class="sep">/</span><span class="current">' + esc(drillProject) + '</span>';
    } else if (drillLevel === 2) {
      h = '<a onclick="drillBack(0)">Dashboard</a><span class="sep">/</span><a onclick="drillBack(1)">' + esc(drillProject) + '</a><span class="sep">/</span><span class="current">' + esc(drillEnv) + '</span>';
    }
  } else {
    const names = { backups: 'Backups', system: 'System', restore: 'Restore' };
    h = '<span class="current">' + (names[currentPage] || currentPage) + '</span>';
  }
  bc.innerHTML = h;
}

function drillBack(level) {
  if (level === 0) { drillLevel = 0; drillProject = null; drillEnv = null; }
  else if (level === 1) { drillLevel = 1; drillEnv = null; }
  renderDashboard();
}

// ---------------------------------------------------------------------------
// Dashboard — Cards + Table modes
// ---------------------------------------------------------------------------
function renderDashboard() {
  currentPage = 'dashboard';
  if (viewMode === 'table') { renderDashboardTable(); }
  else if (drillLevel === 0) { renderProjects(); }
  else if (drillLevel === 1) { renderEnvironments(); }
  else { renderDrillServices(); }
  updateBreadcrumbs();
}

function renderProjects() {
  const c = document.getElementById('page-content');
  const projects = groupBy(allServices, 'project');
  const totalUp = allServices.filter(isHealthy).length;
  const totalDown = allServices.length - totalUp;

  let h = '<div class="page-enter">';

  // Stat tiles — clickable
  h += '<div class="grid-stats" style="margin-bottom:1.5rem;">';
  h += statTile('Projects', Object.keys(projects).length, '#3b82f6');
  h += statTile('Services', allServices.length, '#8b5cf6', "setViewMode('table')");
  h += statTile('Healthy', totalUp, '#10b981', "setTableFilter('healthy','Healthy')");
  h += statTile('Down', totalDown, totalDown > 0 ? '#ef4444' : '#6b7280', totalDown > 0 ? "setTableFilter('down','Down')" : null);
  h += '</div>';

  // Project cards
  h += '<div class="grid-auto">';
  for (const [name, svcs] of Object.entries(projects)) {
    const up = svcs.filter(isHealthy).length;
    const total = svcs.length;
    const envs = [...new Set(svcs.map(s => s.env))];
    h += `<div class="card card-clickable" onclick="drillToProject('${esc(name)}')">
      <div style="display:flex;align-items:center;gap:0.5rem;margin-bottom:0.75rem;">
        <span class="status-dot ${up === total ? 'status-dot-green' : 'status-dot-red'}"></span>
        <span style="font-weight:600;font-size:1.0625rem;color:#f3f4f6;">${esc(name)}</span>
        <span style="margin-left:auto;font-size:0.8125rem;color:#6b7280;">${total} svc</span>
      </div>
      <div style="display:flex;flex-wrap:wrap;gap:0.375rem;margin-bottom:0.5rem;">
        ${envs.map(e => `<span class="badge badge-blue">${esc(e)}</span>`).join('')}
      </div>
      <div style="font-size:0.8125rem;color:#9ca3af;">${up}/${total} healthy</div>
    </div>`;
  }
  h += '</div></div>';
  c.innerHTML = h;
}

function renderEnvironments() {
  const c = document.getElementById('page-content');
  const envs = groupBy(allServices.filter(s => s.project === drillProject), 'env');

  let h = '<div class="page-enter"><div class="grid-auto">';
  for (const [envName, svcs] of Object.entries(envs)) {
    const up = svcs.filter(isHealthy).length;
    const total = svcs.length;
    h += `<div class="card card-clickable" onclick="drillToEnv('${esc(envName)}')">
      <div style="display:flex;align-items:center;gap:0.5rem;margin-bottom:0.75rem;">
        <span class="status-dot ${up === total ? 'status-dot-green' : 'status-dot-red'}"></span>
        <span style="font-weight:600;font-size:1.0625rem;color:#f3f4f6;">${esc(envName).toUpperCase()}</span>
        <span style="margin-left:auto;font-size:0.8125rem;color:#6b7280;">${total} svc</span>
      </div>
      <div style="display:flex;flex-wrap:wrap;gap:0.375rem;margin-bottom:0.5rem;">
        ${svcs.map(s => `<span class="badge ${badgeCls(s.status, s.health)}">${esc(s.service)}</span>`).join('')}
      </div>
      <div style="font-size:0.8125rem;color:#9ca3af;">${up}/${total} healthy</div>
    </div>`;
  }
  h += '</div></div>';
  c.innerHTML = h;
}

function renderDrillServices() {
  const c = document.getElementById('page-content');
  const svcs = allServices.filter(s => s.project === drillProject && s.env === drillEnv);
  let h = '<div class="page-enter"><div class="grid-auto">';
  for (const svc of svcs) h += serviceCard(svc);
  h += '</div></div>';
  c.innerHTML = h;
}

function drillToProject(name) { drillProject = name; drillLevel = 1; renderDashboard(); }
function drillToEnv(name) { drillEnv = name; drillLevel = 2; renderDashboard(); }

// ---------------------------------------------------------------------------
// Dashboard — Table View
// ---------------------------------------------------------------------------
function renderDashboardTable() {
  const c = document.getElementById('page-content');
  const svcs = filterServices(allServices);

  let h = '<div class="page-enter">';

  // Quick filter row
  h += '<div style="display:flex;flex-wrap:wrap;gap:0.5rem;margin-bottom:1rem;">';
  h += filterBtn('All', null);
  h += filterBtn('Healthy', 'healthy');
  h += filterBtn('Down', 'down');
  h += '<span style="color:#374151;">|</span>';
  const projects = [...new Set(allServices.map(s => s.project))].sort();
  for (const p of projects) {
    h += filterBtn(p, 'project:' + p);
  }
  h += '</div>';

  // Table
  if (svcs.length === 0) {
    h += '<div class="card" style="text-align:center;color:#6b7280;padding:2rem;">No services match this filter.</div>';
  } else {
    h += '<div class="table-wrapper"><table class="ops-table">';
    h += '<thead><tr><th>Project</th><th>Env</th><th>Service</th><th>Status</th><th>Health</th><th>Uptime</th><th>Actions</th></tr></thead><tbody>';
    for (const svc of svcs) {
      h += `<tr>
        <td><a style="color:#60a5fa;cursor:pointer;" onclick="setTableFilter('project:${esc(svc.project)}','${esc(svc.project)}')">${esc(svc.project)}</a></td>
        <td><span class="badge badge-blue">${esc(svc.env)}</span></td>
        <td class="mono">${esc(svc.service)}</td>
        <td><span class="badge ${badgeCls(svc.status, svc.health)}">${esc(svc.status)}</span></td>
        <td>${esc(svc.health || 'n/a')}</td>
        <td>${esc(svc.uptime || 'n/a')}</td>
        <td style="white-space:nowrap;">
          <button class="btn btn-ghost btn-xs" onclick="viewLogs('${esc(svc.project)}','${esc(svc.env)}','${esc(svc.service)}')">Logs</button>
          <button class="btn btn-warning btn-xs" onclick="restartService('${esc(svc.project)}','${esc(svc.env)}','${esc(svc.service)}')">Restart</button>
        </td>
      </tr>`;
    }
    h += '</tbody></table></div>';
  }

  h += '</div>';
  c.innerHTML = h;
}

// ---------------------------------------------------------------------------
// Shared Components
// ---------------------------------------------------------------------------
function serviceCard(svc) {
  const p = esc(svc.project), e = esc(svc.env), s = esc(svc.service);
  return `<div class="card">
    <div style="display:flex;align-items:center;gap:0.5rem;margin-bottom:0.5rem;">
      <span class="status-dot ${dotClass(svc.status, svc.health)}"></span>
      <span style="font-weight:600;color:#f3f4f6;">${s}</span>
      <span class="badge ${badgeCls(svc.status, svc.health)}" style="margin-left:auto;">${esc(svc.status)}</span>
    </div>
    <div style="font-size:0.8125rem;color:#9ca3af;margin-bottom:0.75rem;">
      Health: ${esc(svc.health || 'n/a')} &middot; Uptime: ${esc(svc.uptime || 'n/a')}
    </div>
    <div style="display:flex;gap:0.5rem;">
      <button class="btn btn-ghost btn-xs" onclick="viewLogs('${p}','${e}','${s}')">Logs</button>
      <button class="btn btn-warning btn-xs" onclick="restartService('${p}','${e}','${s}')">Restart</button>
    </div>
  </div>`;
}

function statTile(label, value, color, onclick) {
  const click = onclick ? ` onclick="${onclick}"` : '';
  const cls = onclick ? ' stat-tile' : '';
  return `<div class="card${cls}" style="text-align:center;"${click}>
    <div style="font-size:1.75rem;font-weight:700;color:${color};">${value}</div>
    <div style="font-size:0.8125rem;color:#9ca3af;">${label}</div>
  </div>`;
}

function filterBtn(label, filter) {
  const active = tableFilter === filter;
  const cls = active ? 'btn btn-primary btn-xs' : 'btn btn-ghost btn-xs';
  if (filter === null) {
    return `<button class="${cls}" onclick="tableFilter=null;tableFilterLabel='';renderDashboard()">${label}</button>`;
  }
  return `<button class="${cls}" onclick="setTableFilter('${filter}','${label}')">${label}</button>`;
}

function metricBar(label, used, total, unit, color) {
  if (!total || total === 0) return '';
  const pct = Math.round(used / total * 100);
  const cls = pct >= 90 ? 'disk-danger' : pct >= 75 ? 'disk-warn' : color || 'disk-ok';
  return `<div class="card">
    <div style="display:flex;justify-content:space-between;margin-bottom:0.5rem;">
      <span style="font-weight:500;color:#f3f4f6;">${label}</span>
      <span style="font-size:0.8125rem;color:#9ca3af;">${fmtBytes(used)} / ${fmtBytes(total)} (${pct}%)</span>
    </div>
    <div class="progress-bar-track">
      <div class="progress-bar-fill ${cls}" style="width:${pct}%;"></div>
    </div>
  </div>`;
}

// ---------------------------------------------------------------------------
// Backups
// ---------------------------------------------------------------------------
function fmtBackupDate(raw) {
  if (!raw) return '\u2014';
  // YYYYMMDD_HHMMSS -> YYYY-MM-DD HH:MM
  const m = String(raw).match(/^(\d{4})(\d{2})(\d{2})[_T](\d{2})(\d{2})/);
  if (m) return `${m[1]}-${m[2]}-${m[3]} ${m[4]}:${m[5]}`;
  // YYYY-MM-DD passthrough
  return raw;
}

async function renderBackups() {
  updateBreadcrumbs();
  const c = document.getElementById('page-content');
  try {
    const [local, offsite] = await Promise.all([
      api('/api/backups/'),
      api('/api/backups/offsite').catch(() => []),
    ]);

    // Apply filters
    const filteredLocal = local.filter(b => {
      if (backupFilterProject && b.project !== backupFilterProject) return false;
      if (backupFilterEnv && (b.env || b.environment || '') !== backupFilterEnv) return false;
      return true;
    });
    const filteredOffsite = offsite.filter(b => {
      if (backupFilterProject && b.project !== backupFilterProject) return false;
      if (backupFilterEnv && (b.env || b.environment || '') !== backupFilterEnv) return false;
      return true;
    });

    let h = '<div class="page-enter">';

    // Quick backup buttons
    h += '<div style="margin-bottom:1.5rem;">';
    h += '<h2 style="font-size:1.125rem;font-weight:600;color:#f3f4f6;margin-bottom:0.75rem;">Create Backup</h2>';
    h += '<div style="display:flex;flex-wrap:wrap;gap:0.5rem;">';
    for (const p of ['mdf', 'seriousletter']) {
      for (const e of ['dev', 'int', 'prod']) {
        h += `<button class="btn btn-ghost btn-sm" onclick="createBackup('${p}','${e}')">${p}/${e}</button>`;
      }
    }
    h += '</div></div>';

    // Filter bar
    const activeStyle = 'background:rgba(59,130,246,0.2);color:#60a5fa;';
    h += '<div style="display:flex;flex-wrap:wrap;gap:0.5rem;align-items:center;margin-bottom:1.5rem;padding:0.75rem 1rem;background:#1f2937;border-radius:0.5rem;">';
    h += '<span style="color:#9ca3af;font-size:0.875rem;margin-right:0.25rem;">Project:</span>';
    h += `<button class="btn btn-ghost btn-xs" style="${backupFilterProject === null ? activeStyle : ''}" onclick="setBackupFilter('project',null)">All</button>`;
    h += `<button class="btn btn-ghost btn-xs" style="${backupFilterProject === 'mdf' ? activeStyle : ''}" onclick="setBackupFilter('project','mdf')">mdf</button>`;
    h += `<button class="btn btn-ghost btn-xs" style="${backupFilterProject === 'seriousletter' ? activeStyle : ''}" onclick="setBackupFilter('project','seriousletter')">seriousletter</button>`;
    h += '<span style="color:#374151;margin:0 0.25rem;">|</span>';
    h += '<span style="color:#9ca3af;font-size:0.875rem;margin-right:0.25rem;">Env:</span>';
    h += `<button class="btn btn-ghost btn-xs" style="${backupFilterEnv === null ? activeStyle : ''}" onclick="setBackupFilter('env',null)">All</button>`;
    h += `<button class="btn btn-ghost btn-xs" style="${backupFilterEnv === 'dev' ? activeStyle : ''}" onclick="setBackupFilter('env','dev')">dev</button>`;
    h += `<button class="btn btn-ghost btn-xs" style="${backupFilterEnv === 'int' ? activeStyle : ''}" onclick="setBackupFilter('env','int')">int</button>`;
    h += `<button class="btn btn-ghost btn-xs" style="${backupFilterEnv === 'prod' ? activeStyle : ''}" onclick="setBackupFilter('env','prod')">prod</button>`;
    h += '</div>';

    // Local
    h += '<h2 style="font-size:1.125rem;font-weight:600;color:#f3f4f6;margin-bottom:0.75rem;">Local Backups</h2>';
    if (filteredLocal.length === 0) {
      h += '<div class="card" style="color:#6b7280;">No local backups match the current filter.</div>';
    } else {
      h += '<div class="table-wrapper"><table class="ops-table"><thead><tr><th>Project</th><th>Env</th><th>File</th><th>Date</th><th>Size</th></tr></thead><tbody>';
      for (const b of filteredLocal) {
        h += `<tr>
          <td>${esc(b.project||'')}</td>
          <td><span class="badge badge-blue">${esc(b.env||b.environment||'')}</span></td>
          <td class="mono" style="font-size:0.8125rem;">${esc(b.name||b.file||'')}</td>
          <td>${esc(fmtBackupDate(b.date||b.timestamp||''))}</td>
          <td>${esc(b.size_human||b.size||'')}</td>
        </tr>`;
      }
      h += '</tbody></table></div>';
    }

    // Offsite
    h += '<h2 style="font-size:1.125rem;font-weight:600;color:#f3f4f6;margin:1.5rem 0 0.75rem;">Offsite Backups</h2>';
    if (filteredOffsite.length === 0) {
      h += '<div class="card" style="color:#6b7280;">No offsite backups match the current filter.</div>';
    } else {
      h += '<div class="table-wrapper"><table class="ops-table"><thead><tr><th>Project</th><th>Env</th><th>File</th><th>Date</th><th>Size</th></tr></thead><tbody>';
      for (const b of filteredOffsite) {
        h += `<tr>
          <td>${esc(b.project||'')}</td>
          <td><span class="badge badge-blue">${esc(b.env||b.environment||'')}</span></td>
          <td class="mono" style="font-size:0.8125rem;">${esc(b.name||'')}</td>
          <td>${esc(fmtBackupDate(b.date||''))}</td>
          <td>${esc(b.size||'')}</td>
        </tr>`;
      }
      h += '</tbody></table></div>';
    }

    h += '</div>';
    c.innerHTML = h;
  } catch (e) {
    c.innerHTML = '<div class="card" style="color:#f87171;">Failed to load backups: ' + esc(e.message) + '</div>';
  }
}

// ---------------------------------------------------------------------------
// System
// ---------------------------------------------------------------------------
async function renderSystem() {
  updateBreadcrumbs();
  const c = document.getElementById('page-content');
  try {
    const [disk, health, timers, info] = await Promise.all([
      api('/api/system/disk').catch(e => ({ filesystems: [], raw: e.message })),
      api('/api/system/health').catch(e => ({ checks: [], raw: e.message })),
      api('/api/system/timers').catch(e => ({ timers: [], raw: e.message })),
      api('/api/system/info').catch(e => ({ uptime: 'error', load: 'error' })),
    ]);

    let h = '<div class="page-enter">';

    // Resource metrics (CPU, Memory, Swap)
    h += '<h2 style="font-size:1.125rem;font-weight:600;color:#f3f4f6;margin-bottom:0.75rem;">Resources</h2>';
    h += '<div class="grid-metrics" style="margin-bottom:1.5rem;">';

    if (info.cpu) {
      const cpu = info.cpu;
      const cpuPct = cpu.usage_percent || 0;
      const cpuCls = cpuPct >= 90 ? 'disk-danger' : cpuPct >= 75 ? 'disk-warn' : 'disk-ok';
      h += `<div class="card">
        <div style="display:flex;justify-content:space-between;margin-bottom:0.5rem;">
          <span style="font-weight:500;color:#f3f4f6;">CPU</span>
          <span style="font-size:0.8125rem;color:#9ca3af;">${cpuPct}% (${cpu.cores} cores)</span>
        </div>
        <div class="progress-bar-track">
          <div class="progress-bar-fill ${cpuCls}" style="width:${cpuPct}%;"></div>
        </div>
      </div>`;
    }

    if (info.memory) {
      h += metricBar('Memory', info.memory.used, info.memory.total);
    }

    if (info.swap && info.swap.total > 0) {
      h += metricBar('Swap', info.swap.used, info.swap.total);
    }

    h += '</div>';

    // Quick stats row
    h += '<div class="grid-stats" style="margin-bottom:1.5rem;">';
    h += statTile('Uptime', info.uptime || 'n/a', '#3b82f6');
    h += statTile('Load', info.load || 'n/a', '#8b5cf6');
    h += '</div>';

    // Disk usage — only real filesystems
    h += '<h2 style="font-size:1.125rem;font-weight:600;color:#f3f4f6;margin-bottom:0.75rem;">Disk Usage</h2>';
    const realFs = (disk.filesystems || []).filter(f => f.filesystem && f.filesystem.startsWith('/dev'));
    if (realFs.length > 0) {
      h += '<div class="grid-metrics" style="margin-bottom:1.5rem;">';
      for (const fs of realFs) {
        const pct = parseInt(fs.use_percent) || 0;
        h += `<div class="card">
          <div style="display:flex;justify-content:space-between;margin-bottom:0.5rem;">
            <span class="mono" style="font-size:0.8125rem;">${esc(fs.mount || fs.filesystem)}</span>
            <span style="font-size:0.8125rem;color:#9ca3af;">${esc(fs.used)} / ${esc(fs.size)} (${esc(fs.use_percent)})</span>
          </div>
          <div class="progress-bar-track">
            <div class="progress-bar-fill ${diskColor(fs.use_percent)}" style="width:${pct}%;"></div>
          </div>
        </div>`;
      }
      h += '</div>';
    } else {
      h += '<div class="card" style="color:#6b7280;">No disk data.</div>';
    }

    // Health checks
    h += '<h2 style="font-size:1.125rem;font-weight:600;color:#f3f4f6;margin-bottom:0.75rem;">Health Checks</h2>';
    if (health.checks && health.checks.length > 0) {
      h += '<div style="display:grid;gap:0.5rem;margin-bottom:1.5rem;">';
      for (const ck of health.checks) {
        const st = (ck.status || '').toUpperCase();
        const cls = st === 'OK' ? 'badge-green' : st === 'FAIL' ? 'badge-red' : 'badge-gray';
        h += `<div class="card" style="display:flex;align-items:center;gap:0.75rem;padding:0.75rem 1rem;">
          <span class="badge ${cls}">${esc(st)}</span>
          <span style="font-size:0.875rem;">${esc(ck.check)}</span>
        </div>`;
      }
      h += '</div>';
    } else {
      h += '<div class="card" style="color:#6b7280;">No health check data.</div>';
    }

    // Timers
    h += '<h2 style="font-size:1.125rem;font-weight:600;color:#f3f4f6;margin-bottom:0.75rem;">Systemd Timers</h2>';
    if (timers.timers && timers.timers.length > 0) {
      h += '<div class="table-wrapper"><table class="ops-table"><thead><tr><th>Unit</th><th>Next</th><th>Left</th><th>Last</th><th>Passed</th></tr></thead><tbody>';
      for (const t of timers.timers) {
        h += `<tr><td class="mono">${esc(t.unit)}</td><td>${esc(t.next)}</td><td>${esc(t.left)}</td><td>${esc(t.last)}</td><td>${esc(t.passed)}</td></tr>`;
      }
      h += '</tbody></table></div>';
    } else {
      h += '<div class="card" style="color:#6b7280;">No timers found.</div>';
    }

    h += '</div>';
    c.innerHTML = h;
  } catch (e) {
    c.innerHTML = '<div class="card" style="color:#f87171;">Failed to load system info: ' + esc(e.message) + '</div>';
  }
}

// ---------------------------------------------------------------------------
// Restore
// ---------------------------------------------------------------------------
function renderRestore() {
  updateBreadcrumbs();
  const c = document.getElementById('page-content');
  let h = '<div class="page-enter">';
  h += '<h2 style="font-size:1.125rem;font-weight:600;color:#f3f4f6;margin-bottom:0.75rem;">Restore Backup</h2>';
  h += '<div class="card" style="max-width:480px;">';
  h += '<div style="margin-bottom:1rem;"><label class="form-label">Project</label><select id="restore-project" class="form-select"><option value="mdf">mdf</option><option value="seriousletter">seriousletter</option></select></div>';
  h += '<div style="margin-bottom:1rem;"><label class="form-label">Environment</label><select id="restore-env" class="form-select"><option value="dev">dev</option><option value="int">int</option><option value="prod">prod</option></select></div>';
  h += '<div style="margin-bottom:1rem;"><label class="form-label">Source</label><select id="restore-source" class="form-select"><option value="local">Local</option><option value="offsite">Offsite</option></select></div>';
  h += '<div style="margin-bottom:1rem;"><label style="display:flex;align-items:center;gap:0.5rem;font-size:0.875rem;color:#9ca3af;"><input type="checkbox" id="restore-dry" checked> Dry run (preview only)</label></div>';
  h += '<button class="btn btn-danger" onclick="startRestore()">Start Restore</button>';
  h += '</div>';
  h += '<div id="restore-output" style="display:none;margin-top:1rem;"><h3 style="font-size:1rem;font-weight:600;color:#f3f4f6;margin-bottom:0.5rem;">Output</h3><div id="restore-terminal" class="terminal" style="max-height:400px;"></div></div>';
  h += '</div>';
  c.innerHTML = h;
}

async function startRestore() {
  const project = document.getElementById('restore-project').value;
  const env = document.getElementById('restore-env').value;
  const source = document.getElementById('restore-source').value;
  const dryRun = document.getElementById('restore-dry').checked;
  if (!confirm(`Restore ${project}/${env} from ${source}${dryRun ? ' (dry run)' : ''}?`)) return;

  const out = document.getElementById('restore-output');
  const term = document.getElementById('restore-terminal');
  out.style.display = 'block';
  term.textContent = 'Starting restore...\n';

  const url = `/api/restore/${project}/${env}?source=${source}&dry_run=${dryRun}&token=${encodeURIComponent(getToken())}`;
  const es = new EventSource(url);
  es.onmessage = function(e) {
    const d = JSON.parse(e.data);
    if (d.done) {
      es.close();
      term.textContent += d.success ? '\n--- Restore complete ---\n' : '\n--- Restore FAILED ---\n';
      toast(d.success ? 'Restore completed' : 'Restore failed', d.success ? 'success' : 'error');
      return;
    }
    if (d.line) { term.textContent += d.line + '\n'; term.scrollTop = term.scrollHeight; }
  };
  es.onerror = function() { es.close(); term.textContent += '\n--- Connection lost ---\n'; toast('Connection lost', 'error'); };
}

// ---------------------------------------------------------------------------
// Service Actions
// ---------------------------------------------------------------------------
async function restartService(project, env, service) {
  if (!confirm(`Restart ${service} in ${project}/${env}?`)) return;
  toast('Restarting ' + service + '...', 'info');
  try {
    const r = await api(`/api/services/restart/${project}/${env}/${service}`, { method: 'POST' });
    toast(r.message || 'Restarted', 'success');
    setTimeout(refreshCurrentPage, 3000);
  } catch (e) { toast('Restart failed: ' + e.message, 'error'); }
}

async function viewLogs(project, env, service) {
  logCtx = { project, env, service };
  document.getElementById('log-modal-title').textContent = `Logs: ${project}/${env}/${service}`;
  document.getElementById('log-modal-content').textContent = 'Loading...';
  document.getElementById('log-modal').style.display = 'flex';
  await refreshLogs();
}

async function refreshLogs() {
  if (!logCtx.project) return;
  try {
    const d = await api(`/api/services/logs/${logCtx.project}/${logCtx.env}/${logCtx.service}?lines=200`);
    const t = document.getElementById('log-modal-content');
    t.textContent = d.logs || 'No logs available.';
    t.scrollTop = t.scrollHeight;
  } catch (e) { document.getElementById('log-modal-content').textContent = 'Error: ' + e.message; }
}

function closeLogModal() {
  document.getElementById('log-modal').style.display = 'none';
  logCtx = { project: null, env: null, service: null };
}

function setBackupFilter(type, value) {
  if (type === 'project') backupFilterProject = value;
  if (type === 'env') backupFilterEnv = value;
  renderBackups();
}

async function createBackup(project, env) {
  if (!confirm(`Create backup for ${project}/${env}?`)) return;
  toast('Creating backup...', 'info');
  try {
    await api(`/api/backups/${project}/${env}`, { method: 'POST' });
    toast('Backup created for ' + project + '/' + env, 'success');
    if (currentPage === 'backups') renderBackups();
  } catch (e) { toast('Backup failed: ' + e.message, 'error'); }
}

// ---------------------------------------------------------------------------
// Utilities
// ---------------------------------------------------------------------------
function groupBy(arr, key) {
  const m = {};
  for (const item of arr) { const k = item[key] || 'other'; (m[k] = m[k] || []).push(item); }
  return m;
}

// ---------------------------------------------------------------------------
// Init
// ---------------------------------------------------------------------------
(function init() {
  const token = getToken();
  if (token) {
    fetch('/api/status/', { headers: { 'Authorization': 'Bearer ' + token } })
      .then(r => { if (!r.ok) throw new Error(); return r.json(); })
      .then(data => {
        allServices = data;
        document.getElementById('login-overlay').style.display = 'none';
        document.getElementById('app').style.display = 'flex';
      const vEl = document.getElementById('app-version'); if (vEl && typeof APP_VERSION !== 'undefined') vEl.textContent = APP_VERSION;
        showPage('dashboard');
        startAutoRefresh();
      })
      .catch(() => { localStorage.removeItem('ops_token'); });
  }
  document.addEventListener('keydown', e => { if (e.key === 'Escape') closeLogModal(); });
})();