// SvxPortal — web front-end for SvxReflector
// Copyright (C) 2026 SA7AUX (Björn)
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify it under
// the terms of the GNU Affero General Public License as published by the Free
// Software Foundation, either version 3 of the License, or (at your option) any
// later version. See the LICENSE file for details.

'use strict';

let lastNodes = {};
let lastUpdated = 0;
let lastStatus = {};

function setNavActive(which){
  const ids = ["navList","navClients","navMonitor","navTgmon","navLastheard","navCTCSS","navMap","navChangelog"];
  for(const id of ids){
    const el = document.getElementById(id);
    if(!el) continue;
    el.classList.toggle("active", id === which);
  }
}

function setActive(panel){
  const listP = document.getElementById('listPanel');
  const cliP  = document.getElementById('clientsPanel');
  const monP  = document.getElementById('monitorPanel');
  const trkP  = document.getElementById('trunksPanel');
  const topP  = document.getElementById('topologyPanel');
  const lhP   = document.getElementById('lastheardPanel');
  const ctcP  = document.getElementById('ctcssPanel');
  const chgP  = document.getElementById('changelogPanel');
  const tgmP  = document.getElementById('tgmonPanel');

  if(listP) listP.style.display = (panel === 'list') ? 'block' : 'none';
  if(cliP)  cliP.style.display  = (panel === 'clients') ? 'block' : 'none';
  if(monP)  monP.style.display  = (panel === 'monitor') ? 'block' : 'none';
  if(trkP)  trkP.style.display  = (panel === 'trunks') ? 'block' : 'none';
  if(topP)  topP.style.display  = (panel === 'topology') ? 'block' : 'none';
  if(lhP)   lhP.style.display   = (panel === 'lastheard') ? 'block' : 'none';
  if(ctcP)  ctcP.style.display  = (panel === 'ctcss') ? 'block' : 'none';
  if(chgP)  chgP.style.display  = (panel === 'changelog') ? 'block' : 'none';
  if(tgmP)  tgmP.style.display  = (panel === 'tgmon') ? 'block' : 'none';
}

function render(status){
  const nodes = status.nodes || {};
  lastNodes = nodes;
  lastStatus = status;
  window.__svxportal_lastStatus = status;
  window.__svxportal_lastNodes = nodes;

  updateTalkerPopup(nodes, status.talker_meta);

  // Header date/time/age
  const now = new Date();
  document.getElementById('dateTxt').textContent =
    now.toLocaleDateString('en-GB', {weekday:'short', month:'short', day:'numeric'});
  document.getElementById('timeTxt').textContent =
    fmt2(now.getHours()) + ":" + fmt2(now.getMinutes()) + ":" + fmt2(now.getSeconds());

  const age = lastUpdated ? Math.max(0, Math.floor((Date.now()-lastUpdated)/1000)) : 0;
  document.getElementById('ageTxt').textContent = lastUpdated ? (age + "s") : "-";

  // Render visible panels
  if (document.getElementById('listPanel')?.style.display !== 'none') renderList(nodes);
  if (document.getElementById('clientsPanel')?.style.display !== 'none') renderClients(nodes);
  if (document.getElementById('monitorPanel')?.style.display !== 'none') renderMonitor(nodes, status);
  if (document.getElementById('trunksPanel')?.style.display !== 'none') window.renderTrunks?.(lastStatus);
  if (document.getElementById('topologyPanel')?.style.display !== 'none') window.renderTopology?.(lastStatus);
  if (document.getElementById('lastheardPanel')?.style.display !== 'none') window.refreshLastheard?.();
  if (document.getElementById('ctcssPanel')?.style.display !== 'none') window.renderCTCSS?.(lastStatus);
  if (document.getElementById('tgmonPanel')?.style.display !== 'none') window.renderTgMon?.();
}

async function refresh(){
  const j = await apiGet('/svxportal/api/status');   // lib/api.js
  if(!j) return;
  lastUpdated = Date.now();
  render(j);
  applyFederationExtra(j);
}

// On the AlabamaLink box fold the AlabamaLink line INTO the existing
// federation marquee so both scroll together in the one bar — same style, no
// second banner. Every other box keeps just the federation line. Gated on the
// local reflector identity from the status (KT4ROY / alabama.reflector-network.com),
// so it's a no-op everywhere else.
let _fedExtraDone = false;
function applyFederationExtra(status){
  if(_fedExtraDone) return;
  const track = document.querySelector('#federationBanner .fed-track');
  if(!track) return;
  const refs = (status && status.network && Array.isArray(status.network.reflectors)) ? status.network.reflectors : [];
  const isAlabama = refs.some(r => r && r.self && (
    String(r.name || '').toUpperCase() === 'KT4ROY' ||
    /alabama\.reflector-network\.com/i.test(String(r.hostname || '') + ' ' + String(r.name || ''))
  ));
  if(!isAlabama) return;
  _fedExtraDone = true;
  const fed = 'Part of the reflector-network.com federation — a growing mesh of independent networks.';
  const ala = 'Powered by Executor — a multi-mode digital voice server, part of the AlabamaLink network.';
  const sep = '  •  ';
  const unit = fed + sep + ala;
  const inner = document.createElement('span');
  inner.textContent = unit + sep + unit;   // doubled so the loop stays seamless
  track.replaceChildren(inner);
}

/* ===== Monitor submenu ===== */
function closeMonitorSubMenu(){
  const m = document.getElementById('monitorSubMenu');
  if(m) m.style.display = 'none';
}
function toggleMonitorSubMenu(){
  const m = document.getElementById('monitorSubMenu');
  if(!m) return;
  m.style.display = (m.style.display === 'none' || !m.style.display) ? 'block' : 'none';
}
document.addEventListener('click', (e) => {
  const item = document.getElementById('monitorMenuItem');
  if(item && !item.contains(e.target)) closeMonitorSubMenu();
});

/* ===== Wire UI ===== */
document.getElementById('navList')?.addEventListener('click', (e) => {
  e.preventDefault();
  closeMonitorSubMenu();
  setNavActive('navList');
  setActive('list');
  render({nodes:lastNodes});
});

document.getElementById('navClients')?.addEventListener('click', (e) => {
  e.preventDefault();
  closeMonitorSubMenu();
  setNavActive('navClients');
  setActive('clients');
  renderClients(lastNodes);
});

document.getElementById('navMonitor')?.addEventListener('click', (e) => {
  e.preventDefault();
  toggleMonitorSubMenu();
});

document.getElementById('navMonitorNodes')?.addEventListener('click', (e) => {
  e.preventDefault();
  closeMonitorSubMenu();
  setNavActive('navMonitor');
  setActive('monitor');
  renderMonitor(lastNodes, lastStatus);
});

document.getElementById('navMonitorTrunks')?.addEventListener('click', (e) => {
  e.preventDefault();
  closeMonitorSubMenu();
  setNavActive('navMonitor');
  setActive('trunks');
  window.renderTrunks?.(lastStatus);
});

document.getElementById('navMonitorTopology')?.addEventListener('click', (e) => {
  e.preventDefault();
  closeMonitorSubMenu();
  setNavActive('navMonitor');
  setActive('topology');
  window.renderTopology?.(lastStatus);
});

document.getElementById('navLastheard')?.addEventListener('click', (e) => {
  e.preventDefault();
  closeMonitorSubMenu();
  setNavActive('navLastheard');
  setActive('lastheard');
  window.refreshLastheard?.();
});

document.getElementById('navCTCSS')?.addEventListener('click', (e) => {
  e.preventDefault();
  closeMonitorSubMenu();
  setNavActive('navCTCSS');
  setActive('ctcss');
  window.renderCTCSS?.(lastStatus);
});

document.getElementById('navChangelog')?.addEventListener('click', (e) => {
  e.preventDefault();
  closeMonitorSubMenu();
  setNavActive('navChangelog');
  setActive('changelog');
  chLoad();
});

document.getElementById('navTgmon')?.addEventListener('click', (e) => {
  e.preventDefault();
  closeMonitorSubMenu();
  setNavActive('navTgmon');
  setActive('tgmon');
  window.renderTgMon?.();
});

/* ===== Remember the last view across reloads (Ctrl+Shift+R) ===== */
const RESTORE_NAVS = ['navList','navClients','navMonitorNodes','navMonitorTrunks','navMonitorTopology','navTgmon','navLastheard','navCTCSS','navChangelog'];
for (const id of RESTORE_NAVS) {
  document.getElementById(id)?.addEventListener('click', () => { try { localStorage.setItem('svxLastNav', id); } catch (_) {} });
}
(function restoreLastNav(){
  let id = null; try { id = localStorage.getItem('svxLastNav'); } catch (_) {}
  if (id && RESTORE_NAVS.includes(id)) { const el = document.getElementById(id); if (el) el.click(); }
})();

// Changelog: lib/changelog.js, fed by changelog.json.
const _chViewer = changelogViewer({ body: 'chBody', pager: 'chPager', fetchAt: 'chFetchAt' });
async function chLoad() { return _chViewer.load(); }

document.getElementById('monitorMode')?.addEventListener('change', () => {
  renderMonitor(lastNodes, lastStatus);
});

/* ===== Start + SSE ===== */
refresh();

setInterval(() => { // keep Age ticking even without updates
  const ageEl = document.getElementById('ageTxt');
  if(lastUpdated) ageEl.textContent = Math.floor((Date.now()-lastUpdated)/1000) + "s";
}, 1000);

const sseTxt = document.getElementById('sseTxt');
function setSSE(state){
  if(!sseTxt) return;
  sseTxt.textContent = "SSE: " + state;
}

const es = new EventSource('/svxportal/api/stream');
es.addEventListener('update', () => refresh());
es.addEventListener('ping', () => {});
es.onopen = () => setSSE('ok');
es.onerror = () => setSSE('down');
setSSE('connecting');