chitfund/luckychit/lib/shared/widgets/notification_badge.dart

import 'package:flutter/material.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';

/// Notification badge widget that can be placed on icons
class NotificationBadge extends StatelessWidget {
  final Widget child;
  final int count;
  final Color badgeColor;
  final Color textColor;
  final double? size;
  final bool showBadge;

  const NotificationBadge({
    super.key,
    required this.child,
    this.count = 0,
    this.badgeColor = const Color(0xFFD32F2F),
    this.textColor = Colors.white,
    this.size,
    this.showBadge = true,
  });

  @override
  Widget build(BuildContext context) {
    return Stack(
      clipBehavior: Clip.none,
      children: [
        child,
        if (showBadge && count > 0)
          Positioned(
            right: -4.w,
            top: -4.h,
            child: _buildBadge(),
          ),
      ],
    );
  }

  Widget _buildBadge() {
    final badgeSize = size ?? 18.w;
    final fontSize = (size ?? 18) * 0.55;

    return TweenAnimationBuilder<double>(
      tween: Tween(begin: 0.0, end: 1.0),
      duration: const Duration(milliseconds: 300),
      curve: Curves.elasticOut,
      builder: (context, value, child) {
        return Transform.scale(
          scale: value,
          child: child,
        );
      },
      child: Container(
        padding: EdgeInsets.all(count > 99 ? 2.w : 3.w),
        decoration: BoxDecoration(
          color: badgeColor,
          shape: BoxShape.circle,
          boxShadow: [
            BoxShadow(
              color: badgeColor.withOpacity(0.4),
              blurRadius: 4,
              offset: const Offset(0, 2),
            ),
          ],
        ),
        constraints: BoxConstraints(
          minWidth: badgeSize,
          minHeight: badgeSize,
        ),
        child: Center(
          child: Text(
            count > 99 ? '99+' : count.toString(),
            style: TextStyle(
              color: textColor,
              fontSize: fontSize.sp,
              fontWeight: FontWeight.bold,
              height: 1.0,
            ),
            textAlign: TextAlign.center,
          ),
        ),
      ),
    );
  }
}

/// Dot badge for simple notifications
class DotBadge extends StatelessWidget {
  final Widget child;
  final bool showDot;
  final Color dotColor;
  final double dotSize;

  const DotBadge({
    super.key,
    required this.child,
    this.showDot = true,
    this.dotColor = const Color(0xFFD32F2F),
    this.dotSize = 8.0,
  });

  @override
  Widget build(BuildContext context) {
    return Stack(
      clipBehavior: Clip.none,
      children: [
        child,
        if (showDot)
          Positioned(
            right: 0,
            top: 0,
            child: TweenAnimationBuilder<double>(
              tween: Tween(begin: 0.0, end: 1.0),
              duration: const Duration(milliseconds: 300),
              curve: Curves.elasticOut,
              builder: (context, value, child) {
                return Transform.scale(
                  scale: value,
                  child: child,
                );
              },
              child: Container(
                width: dotSize.w,
                height: dotSize.h,
                decoration: BoxDecoration(
                  color: dotColor,
                  shape: BoxShape.circle,
                  border: Border.all(color: Colors.white, width: 2),
                  boxShadow: [
                    BoxShadow(
                      color: dotColor.withOpacity(0.4),
                      blurRadius: 4,
                      offset: const Offset(0, 2),
                    ),
                  ],
                ),
              ),
            ),
          ),
      ],
    );
  }
}

/// Pulsing notification badge with animation
class PulsingBadge extends StatefulWidget {
  final Widget child;
  final int count;
  final Color badgeColor;

  const PulsingBadge({
    super.key,
    required this.child,
    this.count = 0,
    this.badgeColor = const Color(0xFFD32F2F),
  });

  @override
  State<PulsingBadge> createState() => _PulsingBadgeState();
}

class _PulsingBadgeState extends State<PulsingBadge>
    with SingleTickerProviderStateMixin {
  late AnimationController _controller;
  late Animation<double> _scaleAnimation;

  @override
  void initState() {
    super.initState();
    _controller = AnimationController(
      vsync: this,
      duration: const Duration(milliseconds: 1500),
    )..repeat(reverse: true);

    _scaleAnimation = Tween<double>(begin: 1.0, end: 1.2).animate(
      CurvedAnimation(parent: _controller, curve: Curves.easeInOut),
    );
  }

  @override
  void dispose() {
    _controller.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    if (widget.count == 0) {
      return widget.child;
    }

    return Stack(
      clipBehavior: Clip.none,
      children: [
        widget.child,
        Positioned(
          right: -4.w,
          top: -4.h,
          child: AnimatedBuilder(
            animation: _scaleAnimation,
            builder: (context, child) {
              return Transform.scale(
                scale: _scaleAnimation.value,
                child: child,
              );
            },
            child: Container(
              padding: EdgeInsets.all(4.w),
              decoration: BoxDecoration(
                color: widget.badgeColor,
                shape: BoxShape.circle,
                boxShadow: [
                  BoxShadow(
                    color: widget.badgeColor.withOpacity(0.5),
                    blurRadius: 8,
                    spreadRadius: 2,
                  ),
                ],
              ),
              constraints: BoxConstraints(
                minWidth: 18.w,
                minHeight: 18.h,
              ),
              child: Center(
                child: Text(
                  widget.count > 99 ? '99+' : widget.count.toString(),
                  style: TextStyle(
                    color: Colors.white,
                    fontSize: 10.sp,
                    fontWeight: FontWeight.bold,
                  ),
                  textAlign: TextAlign.center,
                ),
              ),
            ),
          ),
        ),
      ],
    );
  }
}

/// Badge with custom content
class CustomBadge extends StatelessWidget {
  final Widget child;
  final String text;
  final Color backgroundColor;
  final Color textColor;
  final EdgeInsets? padding;

  const CustomBadge({
    super.key,
    required this.child,
    required this.text,
    this.backgroundColor = const Color(0xFFD32F2F),
    this.textColor = Colors.white,
    this.padding,
  });

  @override
  Widget build(BuildContext context) {
    return Stack(
      clipBehavior: Clip.none,
      children: [
        child,
        Positioned(
          right: -8.w,
          top: -8.h,
          child: TweenAnimationBuilder<double>(
            tween: Tween(begin: 0.0, end: 1.0),
            duration: const Duration(milliseconds: 300),
            curve: Curves.elasticOut,
            builder: (context, value, child) {
              return Transform.scale(
                scale: value,
                child: child,
              );
            },
            child: Container(
              padding: padding ?? EdgeInsets.symmetric(horizontal: 6.w, vertical: 2.h),
              decoration: BoxDecoration(
                color: backgroundColor,
                borderRadius: BorderRadius.circular(10.r),
                boxShadow: [
                  BoxShadow(
                    color: backgroundColor.withOpacity(0.4),
                    blurRadius: 4,
                    offset: const Offset(0, 2),
                  ),
                ],
              ),
              child: Text(
                text,
                style: TextStyle(
                  color: textColor,
                  fontSize: 10.sp,
                  fontWeight: FontWeight.bold,
                ),
              ),
            ),
          ),
        ),
      ],
    );
  }
}

/// Badge for bottom navigation items
class BottomNavBadge extends StatelessWidget {
  final IconData icon;
  final int count;
  final bool isSelected;
  final Color? selectedColor;
  final Color? unselectedColor;

  const BottomNavBadge({
    super.key,
    required this.icon,
    this.count = 0,
    this.isSelected = false,
    this.selectedColor,
    this.unselectedColor,
  });

  @override
  Widget build(BuildContext context) {
    final color = isSelected
        ? (selectedColor ?? Theme.of(context).primaryColor)
        : (unselectedColor ?? Colors.grey.shade600);

    return NotificationBadge(
      count: count,
      child: Icon(
        icon,
        color: color,
        size: 24.w,
      ),
    );
  }
}