import { lazy, Suspense, useState, useEffect } from "react";
import { AuthorData } from "./types";
import { Lock, RefreshCw } from "lucide-react";

const SciFiPortfolio = lazy(() => import("./components/SciFiPortfolio"));
const EroticaPortfolio = lazy(() => import("./components/EroticaPortfolio"));
const ClaraPortfolio = lazy(() => import("./components/ClaraPortfolio"));
const ReneePortfolio = lazy(() => import("./components/ReneePortfolio"));
const AdminPanel = lazy(() => import("./components/AdminPanel"));

function LoadingScreen() {
  return (
    <div className="min-h-screen bg-slate-950 text-slate-100 flex flex-col items-center justify-center space-y-4">
      <RefreshCw className="w-8 h-8 animate-spin text-cyan-400" />
      <p className="font-mono text-xs text-slate-500 uppercase tracking-widest">Autoren-Portfolio wird geladen...</p>
    </div>
  );
}

export default function App() {
  const [authorData, setAuthorData] = useState<AuthorData | null>(null);
  const [loading, setLoading] = useState(true);
  const [currentPath, setCurrentPath] = useState(window.location.pathname);

  // Monitor location changes for custom routing
  useEffect(() => {
    const handleLocationChange = () => {
      setCurrentPath(window.location.pathname);
    };

    // Listen to popstate for navigation back/forward support
    window.addEventListener("popstate", handleLocationChange);
    return () => {
      window.removeEventListener("popstate", handleLocationChange);
    };
  }, []);

  // Fetch profiles configuration from server
  useEffect(() => {
    fetch("/api/author-data")
      .then((res) => res.json())
      .then((data) => {
        setAuthorData(data);
        setLoading(false);
      })
      .catch((err) => {
        console.error("Fehler beim Abrufen der Autoren-Informationen:", err);
        setLoading(false);
      });
  }, []);

  // Ermittelt die aktive Suite basierend auf Pfad-Überschreibungen oder dem Domainnamen (Hostname)
  const getActiveSuite = (): "erotica" | "clara" | "scifi" | "renee" => {
    const hostname = window.location.hostname.toLowerCase();
    const profileKeys: ("erotica" | "clara" | "renee" | "scifi")[] = ["erotica", "clara", "renee", "scifi"];

    // 1. Pfad-basierte Routen (haben Vorrang, z.B. für Vorschau & Direktlinks)
    for (const key of profileKeys) {
      const p = authorData?.[key];
      const customPaths: string[] = p?.customPath
        ? p.customPath.split(",").map((s) => s.trim().toLowerCase()).filter(Boolean)
        : [];

      // Statische Standard-Fallbacks
      if (key === "erotica") customPaths.push("/sensual-moments", "/annie-slone", "/marc-velvet");
      if (key === "clara") customPaths.push("/clara-finch", "/clara");
      if (key === "renee") customPaths.push("/renee-heart", "/renee");
      if (key === "scifi") customPaths.push("/sci-fi", "/daniel-hesse");

      for (const prefix of customPaths) {
        if (prefix) {
          const formattedPrefix = prefix.startsWith("/") ? prefix : "/" + prefix;
          if (currentPath === formattedPrefix || currentPath.startsWith(formattedPrefix + "/")) {
            return key;
          }
        }
      }
    }

    // 2. Dynamische Domain-basierte Routen (für Live-Domains)
    for (const key of profileKeys) {
      const p = authorData?.[key];
      const customDomains: string[] = p?.customDomain
        ? p.customDomain.split(",").map((s) => s.trim().toLowerCase()).filter(Boolean)
        : [];

      // Statische Standard-Fallbacks
      if (key === "erotica") customDomains.push("annieslone.de", "marcvelvet.de");
      if (key === "clara") customDomains.push("clarafinch.de", "clara-finch.de");
      if (key === "renee") customDomains.push("reneeheart.de", "renee-heart.de");
      if (key === "scifi") customDomains.push("hesse-sf.de", "danielhesse.de");

      for (const domain of customDomains) {
        // Entferne evtl. eingegebene Protokolle (http://, https://) oder führendes "www."
        const cleanDomain = domain.replace(/^https?:\/\//, "").replace(/^www\./, "").trim();
        if (cleanDomain && (hostname === cleanDomain || hostname === `www.${cleanDomain}`)) {
          return key;
        }
      }
    }

    // Standard-Fallback (Daniel Hesse SciFi)
    return "scifi";
  };

  // Dynamisch den Dokumententitel (Browsertab-Titel) basierend auf Suite und Autorendaten anpassen
  useEffect(() => {
    if (!authorData) {
      document.title = "Lade Autoren-Portfolio...";
      return;
    }
    if (currentPath === "/admin" || currentPath.startsWith("/admin/")) {
      document.title = "Admin-Zentrale | Autor-Suiten";
      return;
    }

    const activeSuite = getActiveSuite();
    if (activeSuite === "erotica") {
      document.title = authorData.erotica.name || "Annie Slone";
    } else if (activeSuite === "clara") {
      document.title = authorData.clara.name || "Clara Finch";
    } else if (activeSuite === "renee") {
      document.title = authorData.renee.name || "Renee Heart";
    } else {
      document.title = authorData.scifi.name || "Daniel Hesse";
    }
  }, [currentPath, authorData]);

  const handleAdminLogout = () => {
    // Relocate to landing site after administration work
    window.history.pushState({}, "", "/");
    setCurrentPath("/");
  };

  if (loading) {
    return <LoadingScreen />;
  }

  if (!authorData) {
    return (
      <div className="min-h-screen bg-slate-950 text-slate-100 flex flex-col items-center justify-center p-4">
        <div className="max-w-md p-6 bg-slate-900 border border-slate-800 rounded-xl text-center space-y-3">
          <h2 className="text-lg font-bold text-rose-450 text-rose-400">Verbindungsfehler</h2>
          <p className="text-xs text-slate-400 leading-relaxed">
            Die Verbindung zum lokalen Datenspeicher-Server konnte nicht hergestellt werden. Bitte vergewissern Sie sich, dass Ihr Express API-Server ordnungsgemäß läuft.
          </p>
        </div>
      </div>
    );
  }

  // Purely route-based render isolation structure
  // 1. Administration panel
  if (currentPath === "/admin" || currentPath.startsWith("/admin/")) {
    return <Suspense fallback={<LoadingScreen />}><AdminPanel onLogout={handleAdminLogout} /></Suspense>;
  }

  // Render active portfolio
  const renderActivePortfolio = () => {
    const activeSuite = getActiveSuite();
    const legalDocs = authorData.legalDocuments || [];
    if (activeSuite === "erotica") {
      return <EroticaPortfolio data={authorData.erotica} legalDocuments={legalDocs} />;
    }
    if (activeSuite === "clara") {
      return <ClaraPortfolio data={authorData.clara} legalDocuments={legalDocs} />;
    }
    if (activeSuite === "renee") {
      return <ReneePortfolio data={authorData.renee} legalDocuments={legalDocs} />;
    }
    return <SciFiPortfolio data={authorData.scifi} legalDocuments={legalDocs} />;
  };

  return (
    <Suspense fallback={<LoadingScreen />}>
      {renderActivePortfolio()}
      
      {/* Absolute floating administration bypass link hidden on the bottom left (hover to show) */}
      <div className="fixed bottom-3 left-3 opacity-0 hover:opacity-100 focus-within:opacity-100 transition-opacity duration-300 z-40 bg-neutral-950/90 border border-neutral-800 p-2 rounded-xl flex items-center text-xs font-mono shadow-xl backdrop-blur-sm">
        <a 
          href="/admin" 
          onClick={(e) => {
            e.preventDefault();
            window.history.pushState({}, "", "/admin");
            setCurrentPath("/admin");
          }}
          className="text-stone-500 hover:text-cyan-400 font-bold flex items-center gap-1.5 transition-colors px-1"
        >
          <Lock className="w-3 h-3" />
          <span>Admin-Zentrale</span>
        </a>
      </div>
    </Suspense>
  );
}