import { useState, useEffect } from 'react';
import { Outlet, useNavigate } from 'react-router-dom';
import { toast } from 'sonner';
import { Menu } from 'lucide-react';
import { useTheme } from '@/hooks/useTheme';
import { useAuth } from '@/hooks/useAuth';
import { usePrefetch } from '@/hooks/usePrefetch';
import { AlertsProvider } from '@/hooks/useAlerts';
import { LockProvider, useLock } from '@/hooks/useLock';
import { NotificationProvider } from '@/hooks/useNotifications';
import { Button } from '@/components/ui/button';
import Sidebar from './Sidebar';
import AppAmbientBackground from './AppAmbientBackground';
import LockOverlay from './LockOverlay';
import NotificationToaster from '@/components/notifications/NotificationToaster';

function AppContent({ mobileOpen, setMobileOpen }: {
  mobileOpen: boolean;
  setMobileOpen: (v: boolean) => void;
}) {
  const { isLocked, isLockResolved } = useLock();
  const { hasPasskeys } = useAuth();
  const navigate = useNavigate();
  usePrefetch(isLockResolved && !isLocked);

  // Post-login passkey prompt — show once per session if user has no passkeys
  useEffect(() => {
    if (
      isLockResolved && !isLocked && !hasPasskeys &&
      window.PublicKeyCredential &&
      !sessionStorage.getItem('passkey-prompt-shown')
    ) {
      sessionStorage.setItem('passkey-prompt-shown', '1');
      toast.info('Simplify your login \u2014 set up a passkey in Settings', {
        duration: 8000,
        action: {
          label: 'Set up',
          onClick: () => navigate('/settings?tab=security'),
        },
      });
    }
  }, [isLockResolved, isLocked, hasPasskeys, navigate]);
  const [collapsed, setCollapsed] = useState(() => {
    try { return JSON.parse(localStorage.getItem('umbra-sidebar-collapsed') || 'false'); }
    catch { return false; }
  });

  // Don't render any content until we know the lock state
  if (!isLockResolved || isLocked) {
    return (
      <>
        <div className="h-dvh bg-background" />
        {isLockResolved && <LockOverlay />}
      </>
    );
  }

  return (
    <>
      <div className="flex h-dvh overflow-hidden bg-background">
        <Sidebar
          collapsed={collapsed}
          onToggle={() => {
            const next = !collapsed;
            setCollapsed(next);
            localStorage.setItem('umbra-sidebar-collapsed', JSON.stringify(next));
          }}
          mobileOpen={mobileOpen}
          onMobileClose={() => setMobileOpen(false)}
        />
        <div className="flex-1 flex flex-col overflow-hidden relative ambient-glass">
          <AppAmbientBackground />
          {/* Mobile header */}
          <div className="relative z-10 flex md:hidden items-center h-14 border-b bg-card px-4">
            <Button variant="ghost" size="icon" onClick={() => setMobileOpen(true)}>
              <Menu className="h-5 w-5" />
            </Button>
            <h1 className="text-lg font-bold text-accent ml-3">UMBRA</h1>
          </div>
          <main className="relative z-10 flex-1 overflow-y-auto mobile-scale">
            <Outlet />
          </main>
        </div>
      </div>
      <NotificationToaster />
    </>
  );
}

export default function AppLayout() {
  useTheme();
  const [mobileOpen, setMobileOpen] = useState(false);

  return (
    <LockProvider>
      <AlertsProvider>
        <NotificationProvider>
          <AppContent mobileOpen={mobileOpen} setMobileOpen={setMobileOpen} />
        </NotificationProvider>
      </AlertsProvider>
    </LockProvider>
  );
}