// ui.js — kleine DOM-Helfer, Toast, Badge, Escaping + Inline-Icon-Set.
// Bewusst kein Icon-Font / kein CDN: SVGs als Strings, faerben via currentColor.

export const $  = (s, r = document) => r.querySelector(s);
export const $$ = (s, r = document) => [...r.querySelectorAll(s)];

export function esc(s) {
  return String(s ?? "").replace(/[&<>]/g, c => ({ "&": "&amp;", "<": "&lt;", ">": "&gt;" }[c]));
}

let _tt;
export function toast(msg, err = false) {
  const t = $("#toast");
  if (!t) return;
  t.textContent = msg;
  t.className = "toast show" + (err ? " err" : "");
  clearTimeout(_tt);
  _tt = setTimeout(() => (t.className = "toast"), 3200);
}

// Modell-Status -> Badge-HTML
export function badge(state) {
  if (state === "running" || state === "ready")   return '<span class="badge b-run">geladen</span>';
  if (state === "loading" || state === "starting") return '<span class="badge b-load">lädt…</span>';
  return '<span class="badge b-idle">bereit</span>';
}

// relative Zeit aus Unix-Sekunden (z.B. "2m", "13h")
export function ago(ts) {
  if (!ts) return "";
  const s = Math.max(0, Math.floor(Date.now() / 1000 - ts));
  if (s < 60)    return s + "s";
  if (s < 3600)  return Math.floor(s / 60) + "m";
  if (s < 86400) return Math.floor(s / 3600) + "h";
  return Math.floor(s / 86400) + "d";
}

const _svg = (p) =>
  `<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.7" ` +
  `stroke-linecap="round" stroke-linejoin="round">${p}</svg>`;

// Icon-Set (Stroke-Style, an die Referenz angelehnt)
export const ICON = {
  logo:     _svg('<circle cx="12" cy="12" r="3.2"/><path d="M12 2v3M12 19v3M2 12h3M19 12h3M5 5l2 2M17 17l2 2M19 5l-2 2M7 17l-2 2"/>'),
  grid:     _svg('<rect x="3" y="3" width="7" height="7" rx="1.5"/><rect x="14" y="3" width="7" height="7" rx="1.5"/><rect x="3" y="14" width="7" height="7" rx="1.5"/><rect x="14" y="14" width="7" height="7" rx="1.5"/>'),
  cpu:      _svg('<rect x="6" y="6" width="12" height="12" rx="2"/><path d="M9 1v3M15 1v3M9 20v3M15 20v3M1 9h3M1 15h3M20 9h3M20 15h3"/>'),
  pulse:    _svg('<path d="M3 12h4l2 6 4-14 2 8h6"/>'),
  server:   _svg('<rect x="3" y="4" width="18" height="7" rx="2"/><rect x="3" y="13" width="18" height="7" rx="2"/><path d="M7 7.5h.01M7 16.5h.01"/>'),
  book:     _svg('<path d="M4 5a2 2 0 0 1 2-2h13v16H6a2 2 0 0 0-2 2z"/><path d="M19 19H6a2 2 0 0 0-2 2"/>'),
  help:     _svg('<circle cx="12" cy="12" r="9"/><path d="M9.5 9.2a2.5 2.5 0 0 1 4.8 1c0 1.7-2.3 2-2.3 3.4"/><path d="M12 17h.01"/>'),
  settings: _svg('<circle cx="12" cy="12" r="3"/><path d="M19.4 15a1.6 1.6 0 0 0 .3 1.8l.1.1a2 2 0 1 1-2.8 2.8l-.1-.1a1.6 1.6 0 0 0-2.7 1.1V21a2 2 0 1 1-4 0v-.1A1.6 1.6 0 0 0 6.6 19l-.1.1a2 2 0 1 1-2.8-2.8l.1-.1a1.6 1.6 0 0 0-1.1-2.7H2a2 2 0 1 1 0-4h.1A1.6 1.6 0 0 0 4 6.6l-.1-.1a2 2 0 1 1 2.8-2.8l.1.1A1.6 1.6 0 0 0 9 4.6V4a2 2 0 1 1 4 0v.1A1.6 1.6 0 0 0 17.4 6l.1-.1a2 2 0 1 1 2.8 2.8l-.1.1a1.6 1.6 0 0 0 1.1 2.7H21a2 2 0 1 1 0 4h-.1a1.6 1.6 0 0 0-1.5 1z"/>'),
  swap:     _svg('<path d="M7 4 3 8l4 4"/><path d="M3 8h12a4 4 0 0 1 0 8h-1"/><path d="m17 20 4-4-4-4"/>'),
  monitor:  _svg('<rect x="3" y="4" width="18" height="12" rx="2"/><path d="M8 20h8M12 16v4"/>'),
  layers:   _svg('<path d="m12 2 9 5-9 5-9-5z"/><path d="m3 12 9 5 9-5M3 17l9 5 9-5"/>'),
  alert:    _svg('<path d="M10.3 3.9 1.8 18a2 2 0 0 0 1.7 3h17a2 2 0 0 0 1.7-3L13.7 3.9a2 2 0 0 0-3.4 0z"/><path d="M12 9v4M12 17h.01"/>'),
  gauge:    _svg('<path d="M12 14 16 9"/><circle cx="12" cy="13" r="9"/><path d="M12 4v2M21 13h-2M5 13H3"/>'),
};

export function icon(name) { return ICON[name] || ""; }