"use client";

import { useEffect, useState, type ComponentType } from "react";
import dynamic from "next/dynamic";
import { api } from "@/lib/api";
import type { Destination, BlogPost, FAQ, Testimonial, Tool, Visa, Stats, ChartData } from "@/lib/types";
import Loader from "./Loader";
import ParticleCanvas from "./ParticleCanvas";
import Navbar from "./Navbar";
import TickerBar from "./TickerBar";
import Hero from "./Hero";
import WorldMap from "./WorldMap";
import Destinations from "./Destinations";
import GlobalSearch from "./GlobalSearch";
import Footer from "./Footer";
import CompareModal from "./CompareModal";
import DestinationMatcher, { MatcherTrigger } from "./DestinationMatcher";
import ScrollProgress from "./ScrollProgress";
import SectionNav from "./SectionNav";
import CookieConsent from "./CookieConsent";
import NomadTips from "./NomadTips";
import DailyQuote from "./DailyQuote";
import ToolsStrip from "./ToolsStrip";
import FeedbackWidget from "./FeedbackWidget";
import OnboardingTour from "./OnboardingTour";
import KeyboardShortcuts from "./KeyboardShortcuts";
import BackToTop from "./BackToTop";
import TripPlanner from "./TripPlanner";
import Calculator from "./Calculator";
import SpinGlobe from "./SpinGlobe";

const lazy = <P extends object>(loader: () => Promise<{ default: ComponentType<P> }>) =>
  dynamic(loader, { ssr: false, loading: () => null });

const TimezoneBoard = lazy(() => import("./TimezoneBoard"));
const JetLagEstimator = lazy(() => import("./JetLagEstimator"));
const CostCompare = lazy(() => import("./CostCompare"));
const SavingsGoal = lazy(() => import("./SavingsGoal"));
const RunwayCalculator = lazy(() => import("./RunwayCalculator"));
const ExpenseTracker = lazy(() => import("./ExpenseTracker"));
const TaxDayCounter = lazy(() => import("./TaxDayCounter"));
const FlightCost = lazy(() => import("./FlightCost"));
const CurrencyConverter = lazy(() => import("./CurrencyConverter"));
const MeetingWindow = lazy(() => import("./MeetingWindow"));
const WifiWorkScore = lazy(() => import("./WifiWorkScore"));
const FocusTimer = lazy(() => import("./FocusTimer"));
const NomadScore = lazy(() => import("./NomadScore"));
const Lifestyle = lazy(() => import("./Lifestyle"));
const Charts = lazy(() => import("./Charts"));
const VisaSection = lazy(() => import("./VisaSection"));
const InsuranceGuide = lazy(() => import("./InsuranceGuide"));
const EmergencyContacts = lazy(() => import("./EmergencyContacts"));
const AtmCashGuide = lazy(() => import("./AtmCashGuide"));
const FoodWaterTips = lazy(() => import("./FoodWaterTips"));
const CoworkingGuide = lazy(() => import("./CoworkingGuide"));
const HousingGuide = lazy(() => import("./HousingGuide"));
const SimGuide = lazy(() => import("./SimGuide"));
const PowerPlugGuide = lazy(() => import("./PowerPlugGuide"));
const CafeGuide = lazy(() => import("./CafeGuide"));
const SeasonGuide = lazy(() => import("./SeasonGuide"));
const PackingChecklist = lazy(() => import("./PackingChecklist"));
const ArrivalChecklist = lazy(() => import("./ArrivalChecklist"));
const Phrasebook = lazy(() => import("./Phrasebook"));
const CityNotes = lazy(() => import("./CityNotes"));
const NomadEvents = lazy(() => import("./NomadEvents"));
const Tools = lazy(() => import("./Tools"));
const BlogSection = lazy(() => import("./BlogSection"));
const FAQSection = lazy(() => import("./FAQSection"));
const Community = lazy(() => import("./Community"));

interface Props {
  stats: Stats;
  ticker: string[];
  destinations: Destination[];
  visas: Visa[];
  faqs: FAQ[];
  testimonials: Testimonial[];
  tools: Tool[];
  blog: BlogPost[];
  charts: { cost: ChartData; speed: ChartData; growth: ChartData; radar: ChartData };
}

export default function HomeClient(props: Props) {
  const [compareList, setCompareList] = useState<string[]>([]);
  const [compareResults, setCompareResults] = useState<Destination[] | null>(null);
  const [compareOpen, setCompareOpen] = useState(false);
  const [matcherOpen, setMatcherOpen] = useState(false);

  useEffect(() => {
    const onMatcher = () => setMatcherOpen(true);
    window.addEventListener("open-matcher", onMatcher);
    return () => window.removeEventListener("open-matcher", onMatcher);
  }, []);

  useEffect(() => {
    const observer = new IntersectionObserver(
      (entries) => entries.forEach((e) => {
        if (e.isIntersecting) {
          e.target.classList.add("visible");
          observer.unobserve(e.target);
        }
      }),
      { threshold: 0.1, rootMargin: "0px 0px -50px 0px" }
    );

    let scheduled = 0;
    const observeAll = () => {
      document.querySelectorAll(".reveal:not(.visible)").forEach((el, i) => {
        (el as HTMLElement).style.transitionDelay = `${(i % 6) * 0.1}s`;
        observer.observe(el);
      });
    };

    const schedule = () => {
      if (scheduled) return;
      scheduled = window.setTimeout(() => {
        scheduled = 0;
        observeAll();
      }, 80);
    };

    observeAll();
    const mo = new MutationObserver(schedule);
    mo.observe(document.body, { childList: true, subtree: true });
    return () => {
      observer.disconnect();
      mo.disconnect();
      if (scheduled) clearTimeout(scheduled);
    };
  }, []);

  const toggleCompare = (slug: string) => {
    setCompareList((prev) => {
      if (prev.includes(slug)) return prev.filter((s) => s !== slug);
      if (prev.length >= 4) return prev;
      return [...prev, slug];
    });
    setCompareResults(null);
  };

  const runCompare = async () => {
    if (compareList.length < 2) return;
    try {
      const data = await api.compareDestinations(compareList);
      setCompareResults(data);
      setCompareOpen(true);
    } catch { /* ignore */ }
  };

  return (
    <>
      <ScrollProgress />
      <Loader />
      <ParticleCanvas />
      <Navbar />
      <GlobalSearch />
      <TickerBar messages={props.ticker} />
      <Hero stats={props.stats} />
      <WorldMap destinations={props.destinations} />
      <Destinations destinations={props.destinations} onCompare={toggleCompare} compareList={compareList} onOpenMatcher={() => setMatcherOpen(true)} />
      <SpinGlobe destinations={props.destinations} />
      <DailyQuote />
      <ToolsStrip />
      <TimezoneBoard destinations={props.destinations} />
      <JetLagEstimator destinations={props.destinations} />
      <TripPlanner destinations={props.destinations} />
      <Calculator destinations={props.destinations} />
      <CostCompare destinations={props.destinations} />
      <SavingsGoal destinations={props.destinations} />
      <RunwayCalculator destinations={props.destinations} />
      <ExpenseTracker />
      <TaxDayCounter />
      <FlightCost destinations={props.destinations} />
      <CurrencyConverter />
      <MeetingWindow destinations={props.destinations} />
      <WifiWorkScore destinations={props.destinations} />
      <FocusTimer />
      <NomadScore />
      <Lifestyle />
      <Charts {...props.charts} />
      <VisaSection visas={props.visas} />
      <InsuranceGuide />
      <EmergencyContacts destinations={props.destinations} />
      <AtmCashGuide destinations={props.destinations} />
      <FoodWaterTips destinations={props.destinations} />
      <CoworkingGuide />
      <HousingGuide destinations={props.destinations} />
      <SimGuide destinations={props.destinations} />
      <PowerPlugGuide destinations={props.destinations} />
      <CafeGuide destinations={props.destinations} />
      <SeasonGuide destinations={props.destinations} />
      <PackingChecklist />
      <ArrivalChecklist destinations={props.destinations} />
      <Phrasebook destinations={props.destinations} />
      <CityNotes destinations={props.destinations} />
      <NomadEvents />
      <Tools tools={props.tools} />
      <BlogSection posts={props.blog} />
      <FAQSection faqs={props.faqs} />
      <Community testimonials={props.testimonials} />
      <Footer />
      <BackToTop />
      <SectionNav />
      <MatcherTrigger onClick={() => setMatcherOpen(true)} />
      <DestinationMatcher destinations={props.destinations} open={matcherOpen} onClose={() => setMatcherOpen(false)} />
      <KeyboardShortcuts onOpenMatcher={() => setMatcherOpen(true)} />
      <CookieConsent />
      <NomadTips />
      <FeedbackWidget />
      <OnboardingTour />

      {compareList.length > 0 && (
        <div className="compare-bar">
          <span>⚖️ 已选 {compareList.length}/4</span>
          <button className="btn btn-primary" onClick={runCompare} disabled={compareList.length < 2}>对比城市</button>
          <button className="btn btn-ghost" onClick={() => { setCompareList([]); setCompareResults(null); }}>清空</button>
        </div>
      )}

      {compareOpen && compareResults && (
        <CompareModal destinations={compareResults} onClose={() => setCompareOpen(false)} />
      )}
    </>
  );
}