const combatSpeed = {
  attack: 1,
  movement: 1,
};

export function getAttackSpeedMultiplier() {
  return combatSpeed.attack;
}

export function getMovementSpeedMultiplier() {
  return combatSpeed.movement;
}

export function setCombatSpeedMultipliers({ attack, movement }) {
  if (attack !== undefined) {
    combatSpeed.attack = validMultiplier(attack);
  }

  if (movement !== undefined) {
    combatSpeed.movement = validMultiplier(movement);
  }
}

function validMultiplier(value) {
  const multiplier = Number(value);

  if (!Number.isFinite(multiplier) || multiplier <= 0) {
    throw new Error(`Invalid speed multiplier: ${value}`);
  }

  return multiplier;
}