import type { GameConfig, ShipModel } from "@deadhead/content";

/**
 * Trip duration in game hours: cruise time, the ship's fixed takeoff/landing
 * overhead, and loading/unloading time for the cargo (decision 0.5.31). Pass
 * the distance at departure; it is not recalculated mid-flight. Repositions
 * carry zero mass.
 */
export function travelTimeGameHours(
  ship: ShipModel,
  distanceMillionKm: number,
  massTonnes: number,
  config: GameConfig,
): number {
  const cruiseHours = (distanceMillionKm * 1e6) / ship.cruiseSpeedKmPerGameHour;
  const handlingHours = massTonnes * config.handlingGameHoursPerTonne;
  return cruiseHours + ship.overheadGameHours + handlingHours;
}