import type {
  GuideRouteReadiness
} from '@/domain/museum'

export const NAV_ROUTE_GRAPH_READY = false

export const NAV_ROUTE_UNAVAILABLE_MESSAGE = '当前暂不支持正式导航，可查看位置预览、路线示意和室外参考'

export const NAV_ROUTE_READINESS: GuideRouteReadiness = {
  ready: NAV_ROUTE_GRAPH_READY,
  message: NAV_ROUTE_UNAVAILABLE_MESSAGE,
  requiredData: ['route_graph', 'nav_data']
}

export const applyRouteReadinessGate = (
  readiness: GuideRouteReadiness | null | undefined
): GuideRouteReadiness => {
  const fallback = readiness || NAV_ROUTE_READINESS
  const requiredData = fallback.requiredData?.length
    ? fallback.requiredData
    : NAV_ROUTE_READINESS.requiredData

  if (!NAV_ROUTE_GRAPH_READY) {
    return {
      ...NAV_ROUTE_READINESS,
      requiredData
    }
  }

  if (!fallback.ready) {
    return {
      ...fallback,
      ready: false,
      message: fallback.message || NAV_ROUTE_UNAVAILABLE_MESSAGE,
      requiredData
    }
  }

  return {
    ...fallback,
    requiredData
  }
}

export const NAV_ASSET_BASE_URL = '/static/nav-assets/codex_nav_20260621_175310_museum_default_centerline_finalxy'