// Gathers every source of bonuses for the current state and folds them.

import { foldEffects } from './effects.js';
import { chipDemandBonus } from './formulas.js';

/** The multiplier given by all legacy points earned so far: diminishing returns (a power below 1). */
export function passiveBonus(state, ctx) {
  const { passiveScale, passivePower } = ctx.rules.legacy;
  return 1 + passiveScale * state.legacy.earned ** passivePower;
}

/** All `{ effect, times }` entries that apply to `state`. */
export function collectEffects(state, ctx) {
  const entries = [];

  for (const id of state.upgrades) entries.push({ effect: ctx.upgradesById.get(id)?.effect });
  for (const [id, level] of Object.entries(state.endless)) {
    entries.push({ effect: ctx.endlessById.get(id)?.effect, times: level });
  }
  for (const id of state.research) entries.push({ effect: ctx.researchById.get(id)?.effect });
  for (const id of state.achievements) entries.push({ effect: ctx.achievementsById.get(id)?.effect });

  for (const [id, level] of Object.entries(state.legacy.perks)) {
    entries.push({ effect: ctx.perksById.get(id)?.effect, times: level });
  }

  // Every legacy point ever earned adds a flat bonus. It has diminishing returns and does
  // not compound: stacking x1.05 per point once reached 1e100 within a few runs.
  entries.push({ effect: { type: 'global_mult', value: passiveBonus(state, ctx) } });
  entries.push({ effect: { type: 'demand_mult', value: passiveBonus(state, ctx) } });

  // Chips make the brand more attractive, with diminishing returns.
  entries.push({
    effect: { type: 'demand_mult', value: chipDemandBonus(state.chips, ctx.rules.gamble) },
  });

  // Temporary buffs from events and contracts.
  for (const buff of state.events.buffs) entries.push({ effect: { type: buff.type, value: buff.value } });

  return entries;
}

export function modifiersFor(state, ctx) {
  return foldEffects(collectEffects(state, ctx));
}