import 'dart:ui';
import 'package:flutter/material.dart';
import 'package:lucide_icons/lucide_icons.dart';

class GlassBottomNav extends StatelessWidget {
  final int currentIndex;
  final Function(int) onTap;

  const GlassBottomNav({
    super.key,
    required this.currentIndex,
    required this.onTap,
  });

  @override
  Widget build(BuildContext context) {
    return ClipRect(
      child: BackdropFilter(
        filter: ImageFilter.blur(sigmaX: 20, sigmaY: 20),
        child: Container(
          decoration: BoxDecoration(
            color: Colors.black.withOpacity(0.2), // bg-black/20
            border: Border(top: BorderSide(color: Colors.white.withOpacity(0.1))),
          ),
          padding: EdgeInsets.only(
            bottom: MediaQuery.of(context).padding.bottom + 12,
            top: 12,
          ),
          child: Row(
            mainAxisAlignment: MainAxisAlignment.spaceAround,
            children: [
              _buildNavItem(0, LucideIcons.compass, '发现'),
              _buildNavItem(1, LucideIcons.playCircle, '剧本'),
              _buildNavItem(2, LucideIcons.radio, '操控'),
              _buildNavItem(3, LucideIcons.user, '我的'),
            ],
          ),
        ),
      ),
    );
  }

  Widget _buildNavItem(int index, IconData icon, String label) {
    bool isActive = currentIndex == index;
    return GestureDetector(
      onTap: () => onTap(index),
      behavior: HitTestBehavior.opaque,
      child: SizedBox(
        width: 60,
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            Stack(
              alignment: Alignment.center,
              children: [
                if (isActive)
                  Container(
                    width: 40,
                    height: 40,
                    decoration: BoxDecoration(
                      color: Colors.white.withOpacity(0.1),
                      shape: BoxShape.circle,
                      boxShadow: [
                         BoxShadow(
                           color: Colors.white.withOpacity(0.1),
                           blurRadius: 10,
                           spreadRadius: 5,
                         )
                      ]
                    ),
                  ),
                AnimatedScale(
                  scale: isActive ? 1.1 : 1.0,
                  duration: const Duration(milliseconds: 300),
                  child: Icon(
                    icon,
                    size: 26,
                    color: isActive ? Colors.white : Colors.white.withOpacity(0.5),
                    shadows: isActive ? [const BoxShadow(color: Colors.white, blurRadius: 10)] : null,
                  ),
                ),
              ],
            ),
            const SizedBox(height: 4),
            Text(
              label,
              style: TextStyle(
                fontSize: 10,
                color: isActive ? Colors.white : Colors.white.withOpacity(0.4),
                fontWeight: FontWeight.w500,
              ),
            ),
          ],
        ),
      ),
    );
  }
}