import type { EdgeView, GameView } from '@tinywaste/game-core';

/** Risk tier boundaries */
const RISK_LOW_MAX = 0.35;
const RISK_MID_MAX = 0.65;

const PLACE_ATMOSPHERE: Record<
  string,
  {
    weather: string;
    temperature: string;
    wind: string;
  }
> = {
  home: { weather: 'Light rain', temperature: '18°C', wind: 'Wind 12 km/h' },
  roadside: { weather: 'Cloud break', temperature: '16°C', wind: 'Wind 18 km/h' },
  old_store: { weather: 'Dust drift', temperature: '20°C', wind: 'Wind 9 km/h' },
  village_market: { weather: 'Dry overcast', temperature: '22°C', wind: 'Wind 7 km/h' },
  rain_farm: { weather: 'Wet fog', temperature: '14°C', wind: 'Wind 10 km/h' },
  city_edge: { weather: 'Soot haze', temperature: '19°C', wind: 'Wind 15 km/h' },
  subway_entrance: { weather: 'Cold draft', temperature: '11°C', wind: 'Wind 6 km/h' },
  sewer: { weather: 'Toxic mist', temperature: '13°C', wind: 'Air still' },
  vault_gate: { weather: 'Ash fall', temperature: '9°C', wind: 'Wind 4 km/h' },
};

export function edgeDestination(view: GameView, edge: EdgeView) {
  return view.map.places.find((place) => place.id === edge.to);
}

export function getCurrentPlace(view: GameView) {
  return view.map.places.find((place) => place.current) ?? null;
}

export function getPlaceAtmosphere(placeId: string) {
  return PLACE_ATMOSPHERE[placeId] ?? { weather: 'Dry static', temperature: '17°C', wind: 'Wind 10 km/h' };
}

export function getVisibleRoutes(view: GameView, limit = 3) {
  return view.map.edges.slice(0, limit);
}

export function getRouteRiskTier(risk: number) {
  if (risk <= RISK_LOW_MAX) return { label: '低风险', tone: 'safe' as const };
  if (risk <= RISK_MID_MAX) return { label: '中风险', tone: 'warn' as const };
  return { label: '高风险', tone: 'danger' as const };
}

export function getRiskDots(risk: number) {
  const lit = Math.max(1, Math.min(6, Math.round(risk * 6)));
  return Array.from({ length: 6 }, (_, index) => index < lit);
}