export type UpgradeType = 'clickValue' | 'passive' | 'autoClick';

export interface Upgrade {
  id: string;
  name: string;
  description: string;
  type: UpgradeType;
  level: number;
  maxLevel?: number;
  value: number;
  baseValue: number;
  cost: number;
  baseCost: number;
  costMultiplier: number;
  icon: string;
}

export interface PrestigeUpgrade {
  id: string;
  name: string;
  description: string;
  cost: number;
  multiplierBonus: number;
  purchased: boolean;
  icon: string;
}

export interface GameState {
  currency: number;
  totalCurrency: number;
  clickValue: number;
  passiveIncome: number;
  autoClickRate: number;
  prestigePoints: number;
  prestigeMultiplier: number;
  lastSaveTime: number;
  upgrades: Upgrade[];
  prestigeUpgrades: PrestigeUpgrade[];
}