/**
 * Top-level Plan-Outline-Knoten (AP1.12a).
 * Unterknoten (Projekt-Baum, Gate-Graph) folgen in AP1.12b+.
 *
 * @typedef {{ key: string, to: string, label: string, requiresInitiative?: boolean, disabled?: boolean, hint?: string }} PlanOutlineNode
 */

/** @type {PlanOutlineNode[]} */
export const PLAN_OUTLINE_NODES = [
  { key: 'profile', to: '/plan/profile', label: 'Profil', requiresInitiative: true },
  { key: 'structure', to: '/plan/structure', label: 'Struktur', requiresInitiative: true },
  { key: 'gates', to: '/plan/gates', label: 'Zielzustände', requiresInitiative: true },
  { key: 'inbox', to: '/plan/inbox', label: 'Eingang', requiresInitiative: true },
  { key: 'work', to: '/plan/work', label: 'Arbeit', requiresInitiative: true },
]

/**
 * @param {string} pathname
 * @returns {string | null}
 */
export function resolvePlanOutlineActiveKey(pathname) {
  const path = pathname.replace(/\/$/, '') || pathname
  const match = PLAN_OUTLINE_NODES.find(
    (node) => path === node.to || path.startsWith(`${node.to}/`),
  )
  return match?.key ?? null
}