import React, { useEffect, useState } from 'react';
import { StatusBar } from 'expo-status-bar';
import { View, Text, StyleSheet, ActivityIndicator } from 'react-native';
import { SafeAreaProvider } from 'react-native-safe-area-context';
import 'react-native-gesture-handler';
import { AppNavigator } from './src/navigation';
import { AuthProvider } from './src/contexts/AuthContext';
import { openDatabase } from './src/lib/db';
import { seedGlazeCatalog } from './src/lib/db/repositories';
import { analytics } from './src/lib/analytics';
import { colors } from './src/lib/theme';

export default function App() {
  const [isReady, setIsReady] = useState(false);
  const [error, setError] = useState<string | null>(null);

  useEffect(() => {
    initializeApp();
  }, []);

  const initializeApp = async () => {
    try {
      // Initialize database
      await openDatabase();

      // Seed glaze catalog if not already seeded
      await seedGlazeCatalog();

      // Initialize analytics
      await analytics.initialize();

      // Track app open
      analytics.appOpen(true);

      setIsReady(true);
    } catch (err) {
      console.error('Failed to initialize app:', err);
      setError(err instanceof Error ? err.message : 'Unknown error');
    }
  };

  if (error) {
    return (
      <View style={styles.container}>
        <Text style={styles.errorText}>Failed to initialize app</Text>
        <Text style={styles.errorDetail}>{error}</Text>
      </View>
    );
  }

  if (!isReady) {
    return (
      <View style={styles.container}>
        <ActivityIndicator size="large" color={colors.primary} />
        <Text style={styles.loadingText}>Loading...</Text>
      </View>
    );
  }

  return (
    <SafeAreaProvider>
      <AuthProvider>
        <AppNavigator />
        <StatusBar style="auto" />
      </AuthProvider>
    </SafeAreaProvider>
  );
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: colors.background,
    alignItems: 'center',
    justifyContent: 'center',
  },
  loadingText: {
    marginTop: 16,
    fontSize: 16,
    color: colors.textSecondary,
  },
  errorText: {
    fontSize: 18,
    fontWeight: '600',
    color: colors.error,
    marginBottom: 8,
  },
  errorDetail: {
    fontSize: 14,
    color: colors.textSecondary,
    textAlign: 'center',
    paddingHorizontal: 32,
  },
});