import React, { useState } from "react";
import Library from "./Library.jsx";
import BookView from "./BookView.jsx";
import Settings from "./Settings.jsx";

export default function App() {
  // Permet d'ouvrir un livre directement via #slug (deep-link).
  const [slug, setSlug] = useState(
    () => (location.hash ? decodeURIComponent(location.hash.slice(1)) : null)
  );
  const [showSettings, setShowSettings] = useState(false);

  const goHome = () => { setShowSettings(false); setSlug(null); };

  return (
    <div className="min-h-screen bg-ink-bg text-ink-text">
      <header className="border-b border-ink-edge">
        <div className="mx-auto flex max-w-6xl items-center gap-3 px-6 py-4">
          <button onClick={goHome} className="flex items-center gap-2">
            <span className="text-2xl">🖋️</span>
            <span className="font-serif text-xl tracking-wide">
              Ink<span className="text-ink-accent">Flow</span>
            </span>
          </button>
          <span className="ml-2 hidden text-sm text-ink-muted sm:inline">
            EPUB → livre audio · local · MLX
          </span>
          <button onClick={() => setShowSettings(true)} title="Réglages techniques"
            className="ml-auto text-xl text-ink-muted hover:text-ink-text">⚙</button>
        </div>
      </header>

      <main className="mx-auto max-w-6xl px-6 py-8">
        {showSettings ? (
          <Settings onBack={goHome} />
        ) : slug ? (
          <BookView slug={slug} onBack={() => setSlug(null)} />
        ) : (
          <Library onOpen={setSlug} />
        )}
      </main>
    </div>
  );
}