submanager/lib/widgets/glassmorphic_scaffold.dart

import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'dart:math' as math;
import '../theme/app_colors.dart';
import 'floating_navigation_bar.dart';

/// 글래스모피즘 디자인이 적용된 통일된 스캐폴드
class GlassmorphicScaffold extends StatefulWidget {
  final PreferredSizeWidget? appBar;
  final Widget body;
  final Widget? floatingActionButton;
  final FloatingActionButtonLocation? floatingActionButtonLocation;
  final List<Color>? backgroundGradient;
  final bool extendBodyBehindAppBar;
  final bool extendBody;
  final Widget? bottomNavigationBar;
  final bool useFloatingNavBar;
  final int? floatingNavBarIndex;
  final Function(int)? onFloatingNavBarTapped;
  final bool resizeToAvoidBottomInset;
  final Widget? drawer;
  final Widget? endDrawer;
  final Color? backgroundColor;
  final bool enableParticles;
  final bool enableWaveAnimation;

  const GlassmorphicScaffold({
    super.key,
    this.appBar,
    required this.body,
    this.floatingActionButton,
    this.floatingActionButtonLocation,
    this.backgroundGradient,
    this.extendBodyBehindAppBar = true,
    this.extendBody = true,
    this.bottomNavigationBar,
    this.useFloatingNavBar = false,
    this.floatingNavBarIndex,
    this.onFloatingNavBarTapped,
    this.resizeToAvoidBottomInset = true,
    this.drawer,
    this.endDrawer,
    this.backgroundColor,
    this.enableParticles = false,
    this.enableWaveAnimation = false,
  });

  @override
  State<GlassmorphicScaffold> createState() => _GlassmorphicScaffoldState();
}

class _GlassmorphicScaffoldState extends State<GlassmorphicScaffold>
    with TickerProviderStateMixin {
  late AnimationController _particleController;
  late AnimationController _waveController;
  ScrollController? _scrollController;
  bool _isFloatingNavBarVisible = true;

  @override
  void initState() {
    super.initState();
    _particleController = AnimationController(
      duration: const Duration(seconds: 20),
      vsync: this,
    )..repeat();

    _waveController = AnimationController(
      duration: const Duration(seconds: 10),
      vsync: this,
    )..repeat();

    if (widget.useFloatingNavBar) {
      _scrollController = ScrollController();
      _setupScrollListener();
    }
  }

  void _setupScrollListener() {
    _scrollController?.addListener(() {
      final currentScroll = _scrollController!.position.pixels;

      // 스크롤 방향에 따라 플로팅 네비게이션 바 표시/숨김
      if (currentScroll > 50 &&
          _scrollController!.position.userScrollDirection ==
              ScrollDirection.reverse) {
        if (_isFloatingNavBarVisible) {
          setState(() => _isFloatingNavBarVisible = false);
        }
      } else if (_scrollController!.position.userScrollDirection ==
          ScrollDirection.forward) {
        if (!_isFloatingNavBarVisible) {
          setState(() => _isFloatingNavBarVisible = true);
        }
      }
    });
  }

  @override
  void dispose() {
    _particleController.dispose();
    _waveController.dispose();
    _scrollController?.dispose();
    super.dispose();
  }

  List<Color> _getBackgroundGradient() {
    if (widget.backgroundGradient != null) {
      return widget.backgroundGradient!;
    }

    // 디폴트 그라디언트
    return AppColors.mainGradient;
  }

  @override
  Widget build(BuildContext context) {
    final backgroundGradient = _getBackgroundGradient();

    return Stack(
      children: [
        // 배경 그라디언트
        _buildBackground(backgroundGradient),

        // 파티클 효과 (선택적)
        if (widget.enableParticles) _buildParticles(),

        // 웨이브 애니메이션 (선택적)
        if (widget.enableWaveAnimation) _buildWaveAnimation(),

        // 메인 스캐폴드
        Scaffold(
          backgroundColor: widget.backgroundColor ?? Colors.transparent,
          appBar: widget.appBar,
          body: widget.body,
          floatingActionButton: widget.floatingActionButton,
          floatingActionButtonLocation: widget.floatingActionButtonLocation,
          bottomNavigationBar: widget.bottomNavigationBar,
          extendBodyBehindAppBar: widget.extendBodyBehindAppBar,
          extendBody: widget.extendBody,
          resizeToAvoidBottomInset: widget.resizeToAvoidBottomInset,
          drawer: widget.drawer,
          endDrawer: widget.endDrawer,
        ),

        // 플로팅 네비게이션 바 (선택적)
        if (widget.useFloatingNavBar && widget.floatingNavBarIndex != null)
          FloatingNavigationBar(
            selectedIndex: widget.floatingNavBarIndex!,
            isVisible: _isFloatingNavBarVisible,
            onItemTapped: widget.onFloatingNavBarTapped ?? (_) {},
          ),
      ],
    );
  }

  Widget _buildBackground(List<Color> gradientColors) {
    return Positioned.fill(
      child: Container(
        color: AppColors.backgroundColor, // 베이스 색상 추가
        child: Container(
          decoration: BoxDecoration(
            gradient: LinearGradient(
              begin: Alignment.topLeft,
              end: Alignment.bottomRight,
              colors: gradientColors
                  .map((color) => color.withValues(alpha: 0.3))
                  .toList(),
            ),
          ),
        ),
      ),
    );
  }

  Widget _buildParticles() {
    return Positioned.fill(
      child: AnimatedBuilder(
        animation: _particleController,
        builder: (context, child) {
          return CustomPaint(
            painter: ParticlePainter(
              animation: _particleController,
              particleCount: 30,
            ),
          );
        },
      ),
    );
  }

  Widget _buildWaveAnimation() {
    return Positioned(
      bottom: 0,
      left: 0,
      right: 0,
      height: 200,
      child: AnimatedBuilder(
        animation: _waveController,
        builder: (context, child) {
          return CustomPaint(
            painter: WavePainter(
              animation: _waveController,
              waveColor: AppColors.secondaryColor.withValues(alpha: 0.1),
            ),
          );
        },
      ),
    );
  }
}

/// 파티클 페인터
class ParticlePainter extends CustomPainter {
  final Animation<double> animation;
  final int particleCount;
  final List<Particle> particles = [];

  ParticlePainter({
    required this.animation,
    this.particleCount = 50,
  }) : super(repaint: animation) {
    _initParticles();
  }

  void _initParticles() {
    final random = math.Random();
    for (int i = 0; i < particleCount; i++) {
      particles.add(Particle(
        x: random.nextDouble(),
        y: random.nextDouble(),
        size: random.nextDouble() * 3 + 1,
        speed: random.nextDouble() * 0.5 + 0.1,
        opacity: random.nextDouble() * 0.5 + 0.1,
      ));
    }
  }

  @override
  void paint(Canvas canvas, Size size) {
    final paint = Paint()..style = PaintingStyle.fill;

    for (final particle in particles) {
      final progress = animation.value;
      final y = (particle.y + progress * particle.speed) % 1.0;

      paint.color = AppColors.pureWhite.withValues(alpha: particle.opacity);
      canvas.drawCircle(
        Offset(particle.x * size.width, y * size.height),
        particle.size,
        paint,
      );
    }
  }

  @override
  bool shouldRepaint(covariant CustomPainter oldDelegate) => true;
}

/// 웨이브 페인터
class WavePainter extends CustomPainter {
  final Animation<double> animation;
  final Color waveColor;

  WavePainter({
    required this.animation,
    required this.waveColor,
  }) : super(repaint: animation);

  @override
  void paint(Canvas canvas, Size size) {
    final paint = Paint()
      ..color = waveColor
      ..style = PaintingStyle.fill;

    final path = Path();
    final progress = animation.value;

    path.moveTo(0, size.height);

    for (double x = 0; x <= size.width; x++) {
      final y =
          math.sin((x / size.width * 2 * math.pi) + (progress * 2 * math.pi)) *
                  20 +
              size.height * 0.5;
      path.lineTo(x, y);
    }

    path.lineTo(size.width, size.height);
    path.close();

    canvas.drawPath(path, paint);
  }

  @override
  bool shouldRepaint(covariant CustomPainter oldDelegate) => true;
}

/// 파티클 데이터 클래스
class Particle {
  final double x;
  final double y;
  final double size;
  final double speed;
  final double opacity;

  Particle({
    required this.x,
    required this.y,
    required this.size,
    required this.speed,
    required this.opacity,
  });
}