Siro/siro_admin/lib/views/widgets/snackbar.dart

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:get/get.dart';

enum _SnackVariant { success, error, info, warning }

extension _VariantProps on _SnackVariant {
  Color get baseColor => switch (this) {
        _SnackVariant.success => const Color(0xFF1A9E5C),
        _SnackVariant.error => const Color(0xFFD93025),
        _SnackVariant.info => const Color(0xFF1A73E8),
        _SnackVariant.warning => const Color(0xFFF29900),
      };

  Color get surfaceColor => switch (this) {
        _SnackVariant.success => const Color(0xFFF0FBF5),
        _SnackVariant.error => const Color(0xFFFEF2F1),
        _SnackVariant.info => const Color(0xFFF0F6FF),
        _SnackVariant.warning => const Color(0xFFFFF8E6),
      };

  IconData get icon => switch (this) {
        _SnackVariant.success => Icons.check_circle_rounded,
        _SnackVariant.error => Icons.error_rounded,
        _SnackVariant.info => Icons.info_rounded,
        _SnackVariant.warning => Icons.warning_amber_rounded,
      };

  String get label => switch (this) {
        _SnackVariant.success => 'Success',
        _SnackVariant.error => 'Error',
        _SnackVariant.info => 'Info',
        _SnackVariant.warning => 'Warning',
      };
}

class _SnackContent extends StatefulWidget {
  final String message;
  final _SnackVariant variant;

  const _SnackContent({required this.message, required this.variant});

  @override
  State<_SnackContent> createState() => _SnackContentState();
}

class _SnackContentState extends State<_SnackContent>
    with TickerProviderStateMixin {
  late final AnimationController _ctrl;
  late final AnimationController _scaleCtrl;
  late final Animation<double> _scaleAnim;
  late final Animation<double> _progressAnim;

  static const Duration _displayDuration = Duration(seconds: 4);

  @override
  void initState() {
    super.initState();
    _ctrl = AnimationController(vsync: this, duration: _displayDuration);
    _scaleCtrl = AnimationController(
      vsync: this,
      duration: const Duration(milliseconds: 500),
    );
    _scaleAnim = CurvedAnimation(
      parent: _scaleCtrl,
      curve: Curves.elasticOut,
    );
    _progressAnim = Tween<double>(begin: 1.0, end: 0.0).animate(
      CurvedAnimation(parent: _ctrl, curve: Curves.linear),
    );
    _scaleCtrl.forward();
    _ctrl.forward();
  }

  @override
  void dispose() {
    _ctrl.dispose();
    _scaleCtrl.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    final v = widget.variant;
    final accent = v.baseColor;
    final surface = v.surfaceColor;

    return Container(
      margin: const EdgeInsets.symmetric(horizontal: 14, vertical: 8),
      decoration: BoxDecoration(
        color: surface,
        borderRadius: BorderRadius.circular(18),
        border: Border.all(color: accent.withAlpha(46), width: 1.2),
        boxShadow: [
          BoxShadow(
            color: accent.withAlpha(31),
            blurRadius: 20,
            spreadRadius: -2,
            offset: const Offset(0, 6),
          ),
          BoxShadow(
            color: Colors.black.withAlpha(15),
            blurRadius: 10,
            offset: const Offset(0, 2),
          ),
        ],
      ),
      child: ClipRRect(
        borderRadius: BorderRadius.circular(18),
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            Padding(
              padding: const EdgeInsets.fromLTRB(14, 14, 10, 12),
              child: Row(
                crossAxisAlignment: CrossAxisAlignment.center,
                children: [
                  ScaleTransition(
                    scale: _scaleAnim,
                    child: Container(
                      width: 40,
                      height: 40,
                      decoration: BoxDecoration(
                        color: accent.withAlpha(31),
                        shape: BoxShape.circle,
                      ),
                      child: Icon(v.icon, color: accent, size: 22),
                    ),
                  ),
                  const SizedBox(width: 12),
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      mainAxisSize: MainAxisSize.min,
                      children: [
                        Text(
                          v.label.tr,
                          style: TextStyle(
                            color: accent,
                            fontSize: 13,
                            fontWeight: FontWeight.w700,
                            letterSpacing: 0.2,
                          ),
                        ),
                        const SizedBox(height: 3),
                        Text(
                          widget.message,
                          style: const TextStyle(
                            color: Color(0xFF424242),
                            fontSize: 13.5,
                            height: 1.4,
                            fontWeight: FontWeight.w400,
                          ),
                          maxLines: 2,
                          overflow: TextOverflow.ellipsis,
                        ),
                      ],
                    ),
                  ),
                  GestureDetector(
                    onTap: () {
                      HapticFeedback.lightImpact();
                      _closeSnackbar(context);
                    },
                    child: Container(
                      width: 30,
                      height: 30,
                      margin: const EdgeInsets.only(left: 6),
                      decoration: BoxDecoration(
                        color: Colors.grey.withAlpha(25),
                        shape: BoxShape.circle,
                      ),
                      child: Icon(
                        Icons.close_rounded,
                        size: 16,
                        color: Colors.grey[500],
                      ),
                    ),
                  ),
                ],
              ),
            ),
            AnimatedBuilder(
              animation: _progressAnim,
              builder: (_, __) => Stack(
                children: [
                  Container(height: 3, color: accent.withAlpha(20)),
                  FractionallySizedBox(
                    widthFactor: _progressAnim.value,
                    child: Container(
                      height: 3,
                      decoration: BoxDecoration(
                        color: accent.withAlpha(115),
                        borderRadius: const BorderRadius.only(
                          topRight: Radius.circular(4),
                          bottomRight: Radius.circular(4),
                        ),
                      ),
                    ),
                  ),
                ],
              ),
            ),
          ],
        ),
      ),
    );
  }

  void _closeSnackbar(BuildContext context) {
    ScaffoldMessenger.maybeOf(context)?.hideCurrentSnackBar();
  }
}

int _retryCount = 0;

void _show(_SnackVariant variant, String message) {
  if (Get.context == null) {
    if (_retryCount < 3) {
      _retryCount++;
      WidgetsBinding.instance.addPostFrameCallback((_) => _show(variant, message));
    }
    return;
  }
  _retryCount = 0;

  final context = Get.context;
  if (context == null) return;

  final messenger = ScaffoldMessenger.maybeOf(context);
  if (messenger == null) return;

  messenger.clearSnackBars();

  switch (variant) {
    case _SnackVariant.error:
    case _SnackVariant.warning:
      HapticFeedback.mediumImpact();
    case _SnackVariant.success:
      HapticFeedback.lightImpact();
    case _SnackVariant.info:
      HapticFeedback.selectionClick();
  }

  messenger.showSnackBar(
    SnackBar(
      content: _SnackContent(message: message, variant: variant),
      backgroundColor: Colors.transparent,
      elevation: 0,
      margin: EdgeInsets.zero,
      padding: EdgeInsets.zero,
      behavior: SnackBarBehavior.floating,
      duration: const Duration(seconds: 4),
      dismissDirection: DismissDirection.up,
    ),
  );
}

void mySnackbarSuccess(String message) => _show(_SnackVariant.success, message);
void mySnackbarError(String message) => _show(_SnackVariant.error, message);
void mySnackbarInfo(String message) => _show(_SnackVariant.info, message);
void mySnackbarWarning(String message) => _show(_SnackVariant.warning, message);