import { useEffect } from 'react';
import { DarkTheme, DefaultTheme, ThemeProvider } from '@react-navigation/native';
import { Stack } from 'expo-router';
import { StatusBar } from 'expo-status-bar';
import * as SplashScreen from 'expo-splash-screen';
import 'react-native-reanimated';

import { useColorScheme } from '@/hooks/use-color-scheme';
import { useIsOnboardingComplete } from '@/src/features/onboarding/hooks/useOnboarding';

// Prevent splash screen from auto-hiding
SplashScreen.preventAutoHideAsync();

export const unstable_settings = {
  anchor: '(tabs)',
};

export default function RootLayout() {
  const colorScheme = useColorScheme();
  const isOnboardingComplete = useIsOnboardingComplete();

  // Hide splash screen once we have a definite state
  useEffect(() => {
    if (isOnboardingComplete !== undefined) {
      SplashScreen.hideAsync();
    }
  }, [isOnboardingComplete]);

  // Show nothing while Zustand hydrates from AsyncStorage
  if (isOnboardingComplete === undefined) {
    return null;
  }

  return (
    <ThemeProvider value={colorScheme === 'dark' ? DarkTheme : DefaultTheme}>
      <Stack>
        <Stack.Screen
          name="onboarding"
          options={{
            headerShown: false,
            presentation: 'fullScreenModal',
            animation: 'fade',
            gestureEnabled: false,
          }}
        />
        <Stack.Screen name="(tabs)" options={{ headerShown: false }} />
        <Stack.Screen
          name="timer"
          options={{
            headerShown: false,
            presentation: 'fullScreenModal',
            animation: 'fade',
          }}
        />
        <Stack.Screen name="modal" options={{ presentation: 'modal', title: 'Modal' }} />
      </Stack>
      <StatusBar style="auto" />
    </ThemeProvider>
  );
}