import React from 'react';
import { View, Text, StyleSheet, TouchableOpacity, useColorScheme } from 'react-native';
import { Ionicons } from '@expo/vector-icons';
import { useRouter } from 'expo-router';
import { useSafeAreaInsets } from 'react-native-safe-area-context';
import { Colors } from '@/constants/theme';
import Animated, { FadeInDown } from 'react-native-reanimated';

interface ModernHeaderProps {
  title: string;
  showBack?: boolean;
  rightIcon?: keyof typeof Ionicons.glyphMap;
  onRightPress?: () => void;
}

export default function ModernHeader({ title, showBack = true, rightIcon, onRightPress }: ModernHeaderProps) {
  const router = useRouter();
  const insets = useSafeAreaInsets();
  const colorScheme = useColorScheme() ?? 'light';
  const theme = Colors[colorScheme as 'light' | 'dark'];

  return (
    <Animated.View 
      entering={FadeInDown.duration(400).delay(100)}
      style={[styles.container, { paddingTop: insets.top + 10, paddingBottom: 15, backgroundColor: theme.background }]}
    >
      <View style={styles.left}>
        {showBack && (
          <TouchableOpacity onPress={() => router.back()} style={[styles.iconBtn, { backgroundColor: theme.surface }]}>
            <Ionicons name="chevron-back" size={24} color={theme.text} />
          </TouchableOpacity>
        )}
      </View>

      <Text style={[styles.title, { color: theme.text }]}>{title}</Text>

      <View style={styles.right}>
        {rightIcon ? (
          <TouchableOpacity onPress={onRightPress} style={[styles.iconBtn, { backgroundColor: theme.surface }]}>
            <Ionicons name={rightIcon} size={22} color={theme.text} />
          </TouchableOpacity>
        ) : <View style={{ width: 40 }} />}
      </View>
    </Animated.View>
  );
}

const styles = StyleSheet.create({
  container: {
    flexDirection: 'row',
    alignItems: 'center',
    justifyContent: 'space-between',
    paddingHorizontal: 20,
    zIndex: 100,
  },
  left: {
    width: 40,
    alignItems: 'flex-start',
  },
  right: {
    width: 40,
    alignItems: 'flex-end',
  },
  title: {
    fontSize: 20,
    fontWeight: '700',
    letterSpacing: -0.5,
  },
  iconBtn: {
    width: 40,
    height: 40,
    borderRadius: 12,
    justifyContent: 'center',
    alignItems: 'center',
    shadowColor: '#000',
    shadowOffset: { width: 0, height: 2 },
    shadowOpacity: 0.05,
    shadowRadius: 5,
    elevation: 2,
  }
});