import type { SeasonalPhase } from '@ai-tycoon/shared';
import { SEASONAL_CYCLE_TICKS, SEASONAL_MULTIPLIERS } from '@ai-tycoon/shared';

export interface SeasonalResult {
  phase: SeasonalPhase;
  multipliers: { consumer: number; api: number; enterprise: number };
}

const PHASES: SeasonalPhase[] = ['q1', 'q2', 'q3', 'q4'];

export function computeSeasonal(tickCount: number): SeasonalResult {
  const positionInCycle = tickCount % SEASONAL_CYCLE_TICKS;
  const quarterLength = SEASONAL_CYCLE_TICKS / 4;
  const phaseIndex = Math.min(3, Math.floor(positionInCycle / quarterLength));
  const phase = PHASES[phaseIndex];
  const raw = SEASONAL_MULTIPLIERS[phase];
  return {
    phase,
    multipliers: {
      consumer: raw.consumer,
      api: raw.api,
      enterprise: raw.enterprise,
    },
  };
}