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(
  /** Effective stats carry the ship's own handling time (decision 0.5.63); a bare model uses the game-wide base. */
  ship: ShipModel & { handlingGameHoursPerTonne?: number },
  distanceMillionKm: number,
  massTonnes: number,
  config: GameConfig,
): number {
  const cruiseHours = (distanceMillionKm * 1e6) / ship.cruiseSpeedKmPerGameHour;
  const handlingHours =
    massTonnes * (ship.handlingGameHoursPerTonne ?? config.handlingGameHoursPerTonne);
  return cruiseHours + ship.overheadGameHours + handlingHours;
}