"use client";
// 回响星核 / Echo Nexus — 主循环 hook
import { useEffect, useRef } from "react";
import { useGameStore } from "@/store/gameStore";

/** 250ms tick：产能 + 自动产晶体 + 自动解码 + 星潮 + 成就检测 */
export function useGameLoop() {
  const tick = useGameStore((s) => s.tick);
  const autoDecodeTick = useGameStore((s) => s.autoDecodeTick);
  const tickTide = useGameStore((s) => s.tickTide);
  const checkAchievements = useGameStore((s) => s.checkAchievements);
  const init = useGameStore((s) => s.init);
  const inited = useRef(false);

  useEffect(() => {
    // 等待 persist rehydrate 完成后再 init（v0.5.2 修复离线收益不弹窗 BUG）
    // Zustand persist 即使用同步 localStorage，rehydrate 也是异步（Promise.resolve 包装）
    const doInit = () => {
      if (!inited.current) {
        init();
        inited.current = true;
      }
    };
    let unsub: (() => void) | null = null;
    let fallback: ReturnType<typeof setTimeout> | null = null;
    if (useGameStore.persist.hasHydrated()) {
      doInit();
    } else {
      unsub = useGameStore.persist.onFinishHydration(doInit);
      // 兜底：500ms 后强制 init（防止 hydrated 状态异常）
      fallback = setTimeout(doInit, 500);
    }
    let counter = 0;
    const id = setInterval(() => {
      const now = Date.now();
      tick(now);
      autoDecodeTick();
      // 星潮检测每 tick 都查（结束/触发判定需及时）
      tickTide(now);
      counter++;
      // 成就检测每秒执行一次（降低开销）
      if (counter % 4 === 0) {
        checkAchievements();
      }
    }, 250);
    return () => {
      clearInterval(id);
      if (unsub) unsub();
      if (fallback) clearTimeout(fallback);
    };
  }, [tick, autoDecodeTick, tickTide, checkAchievements, init]);

  // 页面可见性：切回时补 tick + 星潮 + 成就
  useEffect(() => {
    const onVis = () => {
      if (document.visibilityState === "visible") {
        tick(Date.now());
        tickTide(Date.now());
        checkAchievements();
      }
    };
    document.addEventListener("visibilitychange", onVis);
    return () => document.removeEventListener("visibilitychange", onVis);
  }, [tick, tickTide, checkAchievements]);
}