AIHostingTycoon/packages/game-engine/src/systems/economySystem.ts

import type { GameState, EconomyState, InfrastructureState } from '@ai-tycoon/shared';
import { FINANCIAL_SNAPSHOT_INTERVAL, MAX_FINANCIAL_HISTORY, REGULATION_COMPLIANCE_PER_CAPABILITY } from '@ai-tycoon/shared';
import { TECH_TREE } from '../data/techTree';
import type { MarketTickResult } from './marketSystem';

export function processEconomy(
  state: GameState,
  market: MarketTickResult,
  infrastructure: InfrastructureState,
  extraCosts: number = 0,
): EconomyState {
  const revenue = market.apiRevenue + market.subscriptionRevenue;

  let infraExpenses = 0;
  for (const cluster of infrastructure.clusters) {
    for (const campus of cluster.campuses) {
      for (const dc of campus.dataCenters) {
        infraExpenses += dc.energyCostPerTick + dc.maintenanceCostPerTick;
      }
    }
  }

  const talentExpenses = state.talent.totalSalaryPerTick;
  const dataExpenses = state.data.partnerships.reduce((sum, p) => sum + p.costPerTick, 0);

  const bestCapability = state.models.bestDeployedModelScore;
  const eraIdx = ['startup', 'scaleup', 'bigtech', 'agi'].indexOf(state.meta.currentEra);
  const complianceCost = bestCapability > 30 ? bestCapability * REGULATION_COMPLIANCE_PER_CAPABILITY * (1 + eraIdx * 0.5) / 100 : 0;

  const devRelExpenses = state.market.developerEcosystem.devRelSpending;

  let researchExpenses = 0;
  if (state.research.activeResearch) {
    const node = TECH_TREE.find(n => n.id === state.research.activeResearch!.researchId);
    if (node) {
      researchExpenses = node.cost.money / node.cost.ticks;
    }
  }

  const expenses = infraExpenses + talentExpenses + dataExpenses + complianceCost + devRelExpenses + researchExpenses + extraCosts;

  const money = state.economy.money + revenue - expenses;

  const financialHistory = [...state.economy.financialHistory];
  if (state.meta.tickCount % FINANCIAL_SNAPSHOT_INTERVAL === 0) {
    financialHistory.push({
      tick: state.meta.tickCount,
      money,
      revenue,
      expenses,
      valuation: state.economy.funding.valuation,
    });
    if (financialHistory.length > MAX_FINANCIAL_HISTORY) {
      financialHistory.shift();
    }
  }

  return {
    ...state.economy,
    money: Math.max(0, money),
    totalRevenue: state.economy.totalRevenue + revenue,
    totalExpenses: state.economy.totalExpenses + expenses,
    revenuePerTick: revenue,
    expensesPerTick: expenses,
    financialHistory,
  };
}