submanager/lib/widgets/common/snackbar/app_snackbar.dart

import 'package:flutter/material.dart';
import '../../../theme/app_colors.dart';

/// 앱 전체에서 사용되는 통합 스낵바
/// 성공, 에러, 정보 등 다양한 타입의 메시지를 표시합니다.
class AppSnackBar {
  /// 성공 메시지를 표시합니다.
  static void showSuccess({
    required BuildContext context,
    required String message,
    IconData icon = Icons.check_circle_rounded,
    Duration duration = const Duration(seconds: 3),
    bool showAtTop = true,
  }) {
    _show(
      context: context,
      message: message,
      icon: icon,
      backgroundColor: AppColors.successColor,
      iconColor: AppColors.pureWhite,
      textColor: AppColors.pureWhite,
      duration: duration,
      showAtTop: showAtTop,
    );
  }

  /// 에러 메시지를 표시합니다.
  static void showError({
    required BuildContext context,
    required String message,
    IconData icon = Icons.error_rounded,
    Duration duration = const Duration(seconds: 4),
    bool showAtTop = true,
  }) {
    _show(
      context: context,
      message: message,
      icon: icon,
      backgroundColor: AppColors.dangerColor,
      iconColor: AppColors.pureWhite,
      textColor: AppColors.pureWhite,
      duration: duration,
      showAtTop: showAtTop,
    );
  }

  /// 정보 메시지를 표시합니다.
  static void showInfo({
    required BuildContext context,
    required String message,
    IconData icon = Icons.info_rounded,
    Duration duration = const Duration(seconds: 3),
    bool showAtTop = true,
  }) {
    _show(
      context: context,
      message: message,
      icon: icon,
      backgroundColor: AppColors.primaryColor,
      iconColor: AppColors.pureWhite,
      textColor: AppColors.pureWhite,
      duration: duration,
      showAtTop: showAtTop,
    );
  }

  /// 경고 메시지를 표시합니다.
  static void showWarning({
    required BuildContext context,
    required String message,
    IconData icon = Icons.warning_amber_rounded,
    Duration duration = const Duration(seconds: 3),
    bool showAtTop = true,
  }) {
    _show(
      context: context,
      message: message,
      icon: icon,
      backgroundColor: AppColors.warningColor,
      iconColor: AppColors.pureWhite,
      textColor: AppColors.pureWhite,
      duration: duration,
      showAtTop: showAtTop,
    );
  }

  /// 커스텀 스낵바를 표시합니다.
  static void showCustom({
    required BuildContext context,
    required String message,
    required IconData icon,
    required Color backgroundColor,
    Color iconColor = AppColors.pureWhite,
    Color textColor = AppColors.pureWhite,
    Duration duration = const Duration(seconds: 3),
    bool showAtTop = true,
    SnackBarAction? action,
  }) {
    _show(
      context: context,
      message: message,
      icon: icon,
      backgroundColor: backgroundColor,
      iconColor: iconColor,
      textColor: textColor,
      duration: duration,
      showAtTop: showAtTop,
      action: action,
    );
  }

  /// 내부적으로 스낵바를 표시하는 메서드
  static void _show({
    required BuildContext context,
    required String message,
    required IconData icon,
    required Color backgroundColor,
    required Color iconColor,
    required Color textColor,
    required Duration duration,
    required bool showAtTop,
    SnackBarAction? action,
  }) {
    // 기존 스낵바 제거
    ScaffoldMessenger.of(context).hideCurrentSnackBar();

    // 새 스낵바 표시
    ScaffoldMessenger.of(context).showSnackBar(
      SnackBar(
        content: Row(
          children: [
            // 아이콘
            Container(
              padding: const EdgeInsets.all(8),
              decoration: BoxDecoration(
                color: iconColor.withValues(alpha: 0.2),
                shape: BoxShape.circle,
              ),
              child: Icon(
                icon,
                color: iconColor,
                size: 20,
              ),
            ),
            const SizedBox(width: 12),
            // 메시지
            Expanded(
              child: Text(
                message,
                style: TextStyle(
                  fontSize: 16,
                  fontWeight: FontWeight.w500,
                  color: textColor,
                  height: 1.3,
                ),
              ),
            ),
          ],
        ),
        backgroundColor: backgroundColor,
        behavior: SnackBarBehavior.floating,
        margin: showAtTop
            ? EdgeInsets.only(
                top: MediaQuery.of(context).padding.top,
                left: 16,
                right: 16,
                bottom: MediaQuery.of(context).size.height - 100,
              )
            : const EdgeInsets.all(16),
        padding: const EdgeInsets.symmetric(
          horizontal: 16,
          vertical: 14,
        ),
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(12),
        ),
        elevation: 4,
        duration: duration,
        dismissDirection: DismissDirection.horizontal,
        action: action,
      ),
    );
  }

  /// 로딩 스낵바를 표시합니다. (자동으로 사라지지 않음)
  static ScaffoldFeatureController<SnackBar, SnackBarClosedReason> showLoading({
    required BuildContext context,
    required String message,
    bool showAtTop = true,
  }) {
    // 기존 스낵바 제거
    ScaffoldMessenger.of(context).hideCurrentSnackBar();

    return ScaffoldMessenger.of(context).showSnackBar(
      SnackBar(
        content: Row(
          children: [
            // 로딩 인디케이터
            Container(
              width: 24,
              height: 24,
              margin: const EdgeInsets.only(right: 12),
              child: CircularProgressIndicator(
                strokeWidth: 2.5,
                color: AppColors.pureWhite,
              ),
            ),
            // 메시지
            Expanded(
              child: Text(
                message,
                style: const TextStyle(
                  fontSize: 16,
                  fontWeight: FontWeight.w500,
                  color: AppColors.pureWhite,
                ),
              ),
            ),
          ],
        ),
        backgroundColor: AppColors.primaryColor,
        behavior: SnackBarBehavior.floating,
        margin: showAtTop
            ? EdgeInsets.only(
                top: MediaQuery.of(context).padding.top,
                left: 16,
                right: 16,
                bottom: MediaQuery.of(context).size.height - 100,
              )
            : const EdgeInsets.all(16),
        padding: const EdgeInsets.symmetric(
          horizontal: 16,
          vertical: 14,
        ),
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(12),
        ),
        elevation: 4,
        duration: const Duration(days: 365), // 자동으로 사라지지 않음
        dismissDirection: DismissDirection.none, // 스와이프로 닫을 수 없음
      ),
    );
  }

  /// 액션 버튼이 있는 스낵바를 표시합니다.
  static void showWithAction({
    required BuildContext context,
    required String message,
    required String actionLabel,
    required VoidCallback onActionPressed,
    IconData icon = Icons.info_rounded,
    Color backgroundColor = AppColors.primaryColor,
    Duration duration = const Duration(seconds: 4),
    bool showAtTop = true,
  }) {
    _show(
      context: context,
      message: message,
      icon: icon,
      backgroundColor: backgroundColor,
      iconColor: AppColors.pureWhite,
      textColor: AppColors.pureWhite,
      duration: duration,
      showAtTop: showAtTop,
      action: SnackBarAction(
        label: actionLabel,
        textColor: AppColors.pureWhite,
        onPressed: onActionPressed,
      ),
    );
  }
}