// ─── Time Slice ───────────────────────────────────────────────────────────────
// Manages game time, loops, and game state

import type { StateCreator } from 'zustand';
import type { GameState } from '../types';
import { MAX_DAY } from '../constants';
import { calcInsight } from './computed';

export interface TimeSlice {
  // State
  day: number;
  hour: number;
  loopCount: number;
  gameOver: boolean;
  victory: boolean;
  paused: boolean;
  incursionStrength: number;
  loopInsight: number;
  log: string[];

  // Actions
  togglePause: () => void;
  resetGame: () => void;
  startNewLoop: () => void;
  addLog: (message: string) => void;
}

export const createTimeSlice = (
  set: StateCreator<GameState>['set'],
  get: () => GameState,
  initialOverrides?: Partial<GameState>
): TimeSlice => ({
  day: 1,
  hour: 0,
  loopCount: initialOverrides?.loopCount || 0,
  gameOver: false,
  victory: false,
  paused: false,
  incursionStrength: 0,
  loopInsight: 0,
  log: ['✨ The loop begins. You start with Mana Bolt. Gather your strength, mage.'],

  togglePause: () => {
    set((state) => ({ paused: !state.paused }));
  },

  resetGame: () => {
    if (typeof window !== 'undefined') {
      localStorage.removeItem('mana-loop-storage');
    }
    // Reset to initial state
    window.location.reload();
  },

  startNewLoop: () => {
    const state = get();
    const insightGained = state.loopInsight || calcInsight(state);
    const total = state.insight + insightGained;

    // Spell preservation is handled through the prestige upgrade "spellMemory"
    // which is purchased with insight

    // This will be handled by the main store reset
    set({
      day: 1,
      hour: 0,
      gameOver: false,
      victory: false,
      loopCount: state.loopCount + 1,
      insight: total,
      totalInsight: (state.totalInsight || 0) + insightGained,
      loopInsight: 0,
      log: ['✨ A new loop begins. Your insight grows...'],
    });
  },

  addLog: (message: string) => {
    set((state) => ({
      log: [message, ...state.log.slice(0, 49)],
    }));
  },
});