/**
 * Main application — layout management, header updates, sidebar nav, routing.
 */
(function () {
  'use strict';

  var elConnect = document.getElementById('app-connect');
  var elConnected = document.getElementById('app-connected');
  var elHeader = document.getElementById('server-header');
  var elSidebar = document.getElementById('sidebar-nav');
  var elTitle = document.getElementById('page-title');

  // ---- Sidebar navigation ----
  var navPages = [
    { title: 'Server',       path: '/:address/info' },
    { title: 'Console',      path: '/:address/console' },
    { title: 'Chat',         path: '/:address/chat' },
    { title: 'Player List',  path: '/:address/playerlist' }
  ];

  function renderSidebar(address) {
    var html = '';
    for (var i = 0; i < navPages.length; i++) {
      var url = navPages[i].path.replace(':address', address);
      var linkCls = (window._currentPage === navPages[i].title) ? ' nav-link active' : 'nav-link';
      html += '<li class="nav-item"><a class="' + linkCls + '" href="#' + url + '">' + navPages[i].title + '</a></li>';
    }
    elSidebar.innerHTML = html;
  }

  function setActivePage(title) {
    window._currentPage = title;
    elTitle.textContent = title;
    if (Rcon.isConnected()) renderSidebar(Rcon.getAddress());
  }

  // ---- Header update ----
  var headerTimer = null;

  function updateHeader() {
    Rcon.request('serverinfo', function (msg) {
      var data = JSON.parse(msg.Message);
      document.getElementById('header-hostname').textContent = data.Hostname || 'Rust Server';
      document.getElementById('header-uptime').innerHTML = '<i class="bi bi-clock"></i> ' + secondsToDuration(data.Uptime);
      document.getElementById('header-map').innerHTML = '<i class="bi bi-globe2"></i> ' + (data.Map || '');
      document.getElementById('header-players').innerHTML = '<i class="bi bi-people-fill"></i> ' + formatNumber(data.Players) + '/' + formatNumber(data.MaxPlayers);
      document.getElementById('header-fps').innerHTML = '<i class="bi bi-speedometer2"></i> ' + formatNumber(data.Framerate) + 'fps';
      document.getElementById('header-entities').innerHTML = '<i class="bi bi-boxes"></i> ' + formatNumber(data.EntityCount);
    });
  }

  function startHeaderUpdates() {
    updateHeader();
    headerTimer = setInterval(updateHeader, 1000);
  }

  function stopHeaderUpdates() {
    if (headerTimer) { clearInterval(headerTimer); headerTimer = null; }
  }

  // ---- Disconnect button ----
  document.getElementById('btn-disconnect').addEventListener('click', function () {
    if (confirm('Do you really want to disconnect?')) {
      Rcon.disconnect();
    }
  });

  // ---- Layout toggling ----
  function showConnected(address) {
    elConnect.innerHTML = '';
    elConnect.style.display = 'none';
    elConnected.style.display = 'block';
    elHeader.style.display = 'block';
    renderSidebar(address);
    startHeaderUpdates();
  }

  function showDisconnected() {
    stopHeaderUpdates();
    elConnected.style.display = 'none';
    elHeader.style.display = 'none';
    elConnect.style.display = 'block';
    // Clear any stale router content
    document.getElementById('app-view').innerHTML = '';
    ConnectPage([], elConnect);
  }

  // ---- Events ----
  Rcon.on('connected', function () {
    var addr = Rcon.getAddress();
    showConnected(addr);
    Router.go('#/' + addr + '/info');
  });

  Rcon.on('disconnected', function () {
    showDisconnected();
  });

  // ---- Router setup ----
  Router.add(/^\/([^/]+)\/info$/,          'Server',       function (p, c) { setActiveSidebar('Server');       ServerInfoPage(p, c); });
  Router.add(/^\/([^/]+)\/console$/,       'Console',      function (p, c) { setActiveSidebar('Console');      ConsolePage(p, c); });
  Router.add(/^\/([^/]+)\/chat$/,          'Chat',         function (p, c) { setActiveSidebar('Chat');         ChatPage(p, c); });
  Router.add(/^\/([^/]+)\/playerlist$/,    'Player List',  function (p, c) { setActiveSidebar('Player List');  PlayerListPage(p, c); });
  Router.add(/^\/([^/]+)\/player\/(.+)$/,  'Player Info',  function (p, c) { setActiveSidebar('Player Info');  PlayerInfoPage(p, c); });

  Router.start('#app-view');

  // ---- Initial state ----
  showDisconnected();
})();