// Network Devices band — DB-backed (GET /api/devices). Shows IP+MAC+vendor,
// a randomized-MAC badge, and an owner "Discovered" review panel to name/promote
// newly-seen devices. Kept SEPARATE from Little Blue's homelab-service band.
import { el, mount, clear } from '../dom.js';
import { api } from '../api.js';

let host;
const GROUPS = ['Smart Home', 'Entertainment', 'Personal', 'Network', 'Flagged'];

function tile(d) {
  const t = el('div', { class: 'dv-tile' + (d.flagged ? ' flag' : '') + (d.present === false ? ' absent' : '') });
  function view() {
    clear(t);
    const edit = el('button', { class: 'dv-edit-btn', title: 'Edit device' }, '✎');
    edit.onclick = editMode;
    mount(t,
      el('span', { class: 'dv-nm' }, d.name || 'Unknown'),
      el('span', { class: 'dv-ip' }, d.ip || ''),
      d.mac ? el('span', { class: 'dv-mac' }, d.mac) : null,
      el('span', { class: 'dv-vendor' },
        (d.vendor || '') + (d.randomized ? ' · randomized' : '') + (d.present === false ? ' · absent' : '')),
      d.mac ? edit : null);
  }
  function editMode() {
    clear(t);
    const nameI = el('input', { class: 'dv-edit-name', value: d.name || '' });
    const grpS = el('select', { class: 'dv-edit-grp' }, ...GROUPS.map(g => el('option', { value: g }, g)));
    grpS.value = d.grp || 'Flagged';
    const save = el('button', { class: 'dv-add' }, 'Save');
    save.onclick = async () => { await api.patch('/api/devices/' + d.mac, { name: nameI.value.trim() || null, grp: grpS.value }); load(); };
    const del = el('button', { class: 'ghost dv-ignore' }, 'Delete');
    del.onclick = async () => { await api.del('/api/devices/' + d.mac); load(); };
    const cancel = el('button', { class: 'ghost' }, 'Cancel');
    cancel.onclick = view;
    mount(t, el('span', { class: 'dv-mac' }, d.mac), nameI, grpS, save, del, cancel);
  }
  view();
  return t;
}

function discoveredRow(d, onDone) {
  const nameI = el('input', { class: 'dv-edit-name', placeholder: d.vendor || 'name', value: d.name || '' });
  const grpS = el('select', { class: 'dv-edit-grp' }, ...GROUPS.map(g => el('option', { value: g }, g)));
  const add = el('button', { class: 'dv-add' }, 'Add');
  add.onclick = async () => {
    await api.patch('/api/devices/' + d.mac, { name: nameI.value.trim() || null, grp: grpS.value, status: 'known', flagged: false });
    onDone();
  };
  const ignore = el('button', { class: 'ghost dv-ignore' }, 'Ignore');
  ignore.onclick = async () => { await api.patch('/api/devices/' + d.mac, { status: 'ignored' }); onDone(); };
  return el('div', { class: 'dv-disc-row' },
    el('span', { class: 'dv-ip' }, d.ip || ''),
    el('span', { class: 'dv-mac' }, d.mac + (d.randomized ? ' · randomized' : '')),
    el('span', { class: 'dv-vendor' }, d.vendor || ''),
    nameI, grpS, add, ignore);
}

async function load() {
  if (!host) return;
  let data, discovered = [];
  try { data = await api.get('/api/devices'); } catch { mount(host, el('div', { class: 'dv-note' }, 'Devices unavailable')); return; }
  try { discovered = await api.get('/api/devices/discovered'); } catch { /* owner-only; ignore for non-owner */ }

  const total = data.groups.reduce((n, g) => n + g.devices.length, 0);
  const sections = data.groups.map(g =>
    el('div', { class: 'dv-section' },
      el('div', { class: 'dv-group' },
        el('span', { class: 'gname' }, g.name),
        el('span', { class: 'gcount' }, String(g.devices.length)),
        el('span', { class: 'line' })),
      el('div', { class: 'dv-tiles' }, g.devices.map(tile))));

  const discPanel = discovered.length
    ? el('div', { class: 'dv-discovered' },
        el('div', { class: 'dv-disc-hd' }, `Discovered · ${discovered.length} awaiting review`),
        ...discovered.map(d => discoveredRow(d, load)))
    : null;

  clear(host);
  mount(host,
    el('div', { class: 'dv-hd' },
      el('div', { class: 'dv-title' }, 'Network · Devices'),
      el('span', { class: 'dv-count' }, `${total} known${discovered.length ? ` · ${discovered.length} new` : ''}`)),
    ...sections,
    discPanel);
}

export function renderDevicesBand(root) { host = root; return load(); }
export function stopDevicesBand() { host = null; }