// public/views/cards/cluster.js — Proxmox cluster health + quorum across nodes.
import { el, mount } from '../../dom.js';
import { api } from '../../api.js';

let body, timer;

function nodeRow(n, master) {
  const tags = [];
  if (n.local) tags.push('local');
  if (master === n.name) tags.push('master');
  return el('div', { class: 'sv-row status-' + (n.online ? 'ok' : 'down') },
    el('span', { class: 'k' }, el('span', { class: 'dot' }), n.name),
    el('span', {}, (n.online ? 'online' : 'OFFLINE') + (tags.length ? ' · ' + tags.join(' · ') : '')));
}

async function load() {
  if (!body) return;
  try {
    const c = await api.get('/api/cluster');
    if (c.error) { mount(body, el('span', { class: 'muted' }, 'Cluster: ' + c.error)); return; }
    const haIssues = c.ha?.services_error || 0;
    const rows = el('div', { class: 'sv-cluster' },
      el('div', { class: 'sv-row' },
        el('span', { class: 'k' }, 'Quorum'),
        el('span', { class: 'cl-badge ' + (c.quorate ? 'ok' : 'bad') }, c.quorate ? 'QUORATE' : 'NO QUORUM')),
      el('div', { class: 'sv-row' },
        el('span', { class: 'k' }, 'Nodes'),
        el('span', { class: c.nodes_online < c.nodes_total ? 'warn' : '' }, `${c.nodes_online}/${c.nodes_total} online`)),
      ...(c.nodes || []).map(n => nodeRow(n, c.ha?.master)),
      el('div', { class: 'sv-row' },
        el('span', { class: 'k' }, 'HA services'),
        el('span', { class: haIssues ? 'warn' : '' },
          haIssues ? `${c.ha.services_total} · ${haIssues} ⚠` : `${c.ha?.services_total ?? 0} · ok`))
    );
    mount(body, rows);
  } catch { mount(body, el('span', { class: 'muted' }, 'Cluster unavailable')); }
}

export default {
  id: 'cluster', title: 'Cluster · HZ', size: 'm',
  mount(e) { body = e; load(); },
  start() { timer = setInterval(load, 30000); },
  stop() { clearInterval(timer); body = null; }
};