// Upgrade effects. To add a new effect type: register it here, add its
// `effect.<type>` string to the core locale files, and use it in upgrades.json.

export function newModifiers() {
  return {
    click: 1,
    generators: {},
    global: 1,
    demand: 1,
    value: 1,
    materialEfficiency: 1,
    batchDiscount: 1,
    batchSize: 1,
    autoBuyMaterial: false,
  };
}

const APPLY = {
  click_mult: (m, e) => void (m.click *= e.value),
  generator_mult: (m, e) => void (m.generators[e.target] = (m.generators[e.target] ?? 1) * e.value),
  global_mult: (m, e) => void (m.global *= e.value),
  demand_mult: (m, e) => void (m.demand *= e.value),
  value_mult: (m, e) => void (m.value *= e.value),
  material_efficiency: (m, e) => void (m.materialEfficiency *= e.value),
  batch_discount: (m, e) => void (m.batchDiscount *= e.value),
  batch_size_mult: (m, e) => void (m.batchSize *= e.value),
  auto_buy_material: (m) => void (m.autoBuyMaterial = true),
};

export const EFFECT_TYPES = Object.keys(APPLY);

/** Fold every owned upgrade into a single set of multipliers. */
export function computeModifiers(ownedIds, upgradesById) {
  const m = newModifiers();
  for (const id of ownedIds) {
    const effect = upgradesById.get(id)?.effect;
    if (effect) APPLY[effect.type]?.(m, effect);
  }
  return m;
}