/* Contract only — permanent machinery, copied into every product folder so that
   deleting the product deletes it too. No domain value may appear in this file:
   if an unrelated product could not use a value with the same meaning, it
   belongs in enums.js or nav.js beside it. These copies start byte-identical
   between products and stay that way — a fix here is a fix everywhere, never a
   local edit.

   Shapes
     Tone          "neutral" | "info" | "success" | "warning" | "danger"
     StatusValue   { id, label, tone }
     StatusField   { entity, field, means, values: StatusValue[] }
     LabelledValue { value, label }
     Route         { path, label, icon?, group?, parent?, badge?,
                     offSidebar?, menuOnly?, roles? }
*/

const TONES = ["neutral", "info", "success", "warning", "danger"];

/* Classification values render through this — never through a Badge. */
function labelOf(list, value) {
  const hit = (list || []).find((i) => i.value === value);
  return hit ? hit.label : value;
}

/* The one place a status id becomes a label + tone. */
function statusValue(values, id) {
  return (values || []).find((v) => v.id === id) || null;
}

function indexRoutes(nav) {
  const index = {};
  (nav || []).forEach((r) => { index[r.path] = r; });
  return index;
}

function matchRoute(path, index) {
  if (index[path]) return index[path];
  return Object.values(index).find((r) =>
    r.path.indexOf(":") > -1 &&
    new RegExp("^" + r.path.replace(/:[^/]+/g, "[^/]+") + "$").test(path)
  ) || null;
}

/* Breadcrumbs read the index, never the nav tree, and never invent a segment:
   an unresolved path returns [] so the screen — not the route table — is fixed. */
function breadcrumb(path, index) {
  const route = matchRoute(path, index);
  if (!route) return [];
  const trail = [route];
  let parent = route.parent;
  while (parent && index[parent]) { trail.unshift(index[parent]); parent = index[parent].parent; }
  return trail.map((s) => ({ label: s.label, path: s.path, isNamespace: !!s.menuOnly }));
}

Object.assign(window, { TONES, labelOf, statusValue, indexRoutes, matchRoute, breadcrumb });
