import React, { lazy, Suspense } from "react";
import { createRoot } from "react-dom/client";
import { QueryClientProvider } from "@tanstack/react-query";
import { createQueryClient } from "./lib/queryClient";
import { FloatingTree } from "@floating-ui/react";
import ErrorBoundary from "./components/ErrorBoundary";
import { ConfirmProvider } from "./components/ConfirmProvider";
import BootGate, { BootScreen } from "./components/BootGate";
import { NavigationProvider } from "./components/NavigationProvider";
import { FeedFiltersProvider } from "./components/FeedFiltersProvider";
import { SavedViewsProvider } from "./components/SavedViewsProvider";
import { PlaylistsProvider } from "./components/PlaylistsProvider";
import { PlexProvider } from "./components/PlexProvider";
import { PlexViewBridge } from "./components/PlexViewBridge";
import { ChannelsProvider } from "./components/ChannelsProvider";
import { FeedViewProvider } from "./components/FeedViewProvider";
import { PrefsProvider } from "./components/PrefsProvider";
import { WizardProvider } from "./components/WizardProvider";
import "./i18n";
import "./index.css";
import "flag-icons/css/flag-icons.min.css";
import { lazyWithPreload } from "./lib/lazyWithPreload";
import { installClientLog } from "./lib/logHooks";
import { installStaleBuildReload } from "./lib/staleBuild";
import { appCopyOf } from "./i18n/appCopy";

// First, before any render: a crash or a navigation during boot belongs in the log too.
installClientLog(appCopyOf);
// A tab from before the last release reloads onto the new build instead of crashing on a lazy chunk.
installStaleBuildReload();

// Split by top-level route so each entry point is its own chunk: a legal page never downloads the
// authenticated app bundle, and the app never carries it either. The legal pages live outside the
// App tree (no /api/me) so Google's consent screen and reviewers can fetch them directly. Reached by
// full-page navigation (plain <a href>), so a simple pathname switch is enough — no router needed.
// A public /watch link is not here at all: it has its own HTML entry (watch.html → watchMain.tsx),
// so the friend it was sent to never loads this file's providers, i18n or CSS imports.
const App = lazyWithPreload(() => import("./App"));
const PrivacyPolicy = lazy(() => import("./components/legal/PrivacyPolicy"));
const Terms = lazy(() => import("./components/legal/Terms"));
// The design lab: the living style guide, rendered with the app's real CSS so a design decision
// is taken on what will ship. DEV only — Vite folds the condition to `false` in a production build,
// the import becomes dead code and the chunk is never emitted (devOnlyGuard fails the build if it is).
const DesignLab = import.meta.env.DEV ? lazy(() => import("./design-lab/DesignLab")) : null;

const queryClient = createQueryClient();

// Baseline theme so the token CSS vars (--bg/--surface/--accent/…) resolve on first paint — including
// the standalone public pages (/privacy, /terms) that render outside <App> and never call
// applyTheme. The app overrides this with the user's saved theme once it mounts.
const de = document.documentElement.dataset;
de.theme ||= "dark";
de.scheme ||= "midnight";

const path = window.location.pathname;
const isLab = DesignLab !== null && path === "/design-lab";
const isPublicPage = path === "/privacy" || path === "/terms" || isLab;
// Fetch the app chunk NOW, alongside BootGate's identity probe, instead of only once the gate opens:
// the two waits then overlap rather than queue, and the gate usually opens straight onto the app. A
// failed fetch is left to the render's own load, which retries it and reports to the ErrorBoundary.
if (!isPublicPage) App.preload().catch(() => {});
const root =
  isLab && DesignLab ? (
    <FloatingTree>
      <DesignLab />
    </FloatingTree>
  ) : path === "/privacy" ? (
    <PrivacyPolicy />
  ) : path === "/terms" ? (
    <Terms />
  ) : (
    <QueryClientProvider client={queryClient}>
      {/* One tree for the whole app: every anchored popover registers as a node so Escape and
          outside-press act only on the topmost popover. The Modal and the players are not nodes:
          they order against the popovers through lib/layerStack. */}
      <FloatingTree>
        <ConfirmProvider>
          {/* Nothing below renders until the tab knows which account it is: every provider
              seeds per-account state in its initializer (see BootGate). */}
          <BootGate>
            <NavigationProvider>
              <FeedFiltersProvider>
                <PlaylistsProvider>
                  <PlexProvider>
                    <PlexViewBridge>
                      {/* SavedViewsProvider sits below BOTH filter providers so it can switch its
                        source (feed ⟷ plex) by the active page and read the right live filters. */}
                      <SavedViewsProvider>
                        <ChannelsProvider>
                          <FeedViewProvider>
                            <PrefsProvider>
                              <WizardProvider>
                                {/* The same quiet screen as the gate's, so a chunk that is still
                                  loading when the gate opens continues it instead of blanking. */}
                                <Suspense fallback={<BootScreen />}>
                                  <App />
                                </Suspense>
                              </WizardProvider>
                            </PrefsProvider>
                          </FeedViewProvider>
                        </ChannelsProvider>
                      </SavedViewsProvider>
                    </PlexViewBridge>
                  </PlexProvider>
                </PlaylistsProvider>
              </FeedFiltersProvider>
            </NavigationProvider>
          </BootGate>
        </ConfirmProvider>
      </FloatingTree>
    </QueryClientProvider>
  );

createRoot(document.getElementById("root")!).render(
  <React.StrictMode>
    {/* Around EVERY entry, the public ones too: a crash, or a chunk gone twice over after a release
        (lib/staleBuild), left a blank white page with no way on. */}
    <ErrorBoundary>
      <Suspense fallback={<div style={{ minHeight: "100dvh" }} />}>{root}</Suspense>
    </ErrorBoundary>
  </React.StrictMode>,
);