import { atom } from "jotai";
import { 
  getDefaultSettings,
  getDefaultHabitsData,
  getDefaultCoinsData,
  getDefaultWishlistData
} from "./types";
import { 
  getTodayInTimezone, 
  isSameDate, 
  t2d,
  calculateCoinsEarnedToday,
  calculateTotalEarned,
  calculateTotalSpent,
  calculateCoinsSpentToday,
  calculateTransactionsToday
} from "@/lib/utils";

export const settingsAtom = atom(getDefaultSettings());
export const habitsAtom = atom(getDefaultHabitsData());
export const coinsAtom = atom(getDefaultCoinsData());
export const wishlistAtom = atom(getDefaultWishlistData());

// Derived atom for coins earned today
export const coinsEarnedTodayAtom = atom((get) => {
  const coins = get(coinsAtom);
  const settings = get(settingsAtom);
  return calculateCoinsEarnedToday(coins.transactions, settings.system.timezone);
});

// Derived atom for total earned
export const totalEarnedAtom = atom((get) => {
  const coins = get(coinsAtom);
  return calculateTotalEarned(coins.transactions);
});

// Derived atom for total spent
export const totalSpentAtom = atom((get) => {
  const coins = get(coinsAtom);
  return calculateTotalSpent(coins.transactions);
});

// Derived atom for coins spent today
export const coinsSpentTodayAtom = atom((get) => {
  const coins = get(coinsAtom);
  const settings = get(settingsAtom);
  return calculateCoinsSpentToday(coins.transactions, settings.system.timezone);
});

// Derived atom for transactions today
export const transactionsTodayAtom = atom((get) => {
  const coins = get(coinsAtom);
  const settings = get(settingsAtom);
  return calculateTransactionsToday(coins.transactions, settings.system.timezone);
});