refactor: Centralize error and notification handling using a dedicated _errorService across various components.

lib/components/error/error_content.dart

@@ -1,31 +1,31 @@
 import 'package:flutter/material.dart';
 
 /// A reusable error display component.
-/// 
+///
 /// This widget provides a consistent way to display error messages throughout
 /// the application. It supports customizable titles, messages, icons, and
 /// action buttons for retry and close operations.
 class ErrorContent extends StatelessWidget {
   /// The error title to display
   final String title;
-  
+
   /// The error message to display
   final String message;
-  
+
   /// Optional callback for retry action
   final VoidCallback? onRetry;
-  
+
   /// Optional callback for close action
   final VoidCallback? onClose;
-  
+
   /// Icon to display with the error
   final IconData icon;
-  
+
   /// Color of the error icon
   final Color? iconColor;
 
   /// Creates a new [ErrorContent] widget.
-  /// 
+  ///
   /// [message] is required, other parameters are optional with sensible defaults.
   const ErrorContent({
     super.key,
@@ -79,11 +79,7 @@ class ErrorContent extends StatelessWidget {
               color: defaultIconColor?.withValues(alpha: 0.1),
               shape: BoxShape.circle,
             ),
-            child: Icon(
-              icon,
-              size: 48,
-              color: defaultIconColor,
-            ),
+            child: Icon(icon, size: 48, color: defaultIconColor),
           ),
 
           const SizedBox(height: 24),
@@ -167,9 +163,7 @@ void showErrorDialog(
     barrierDismissible: barrierDismissible,
     builder: (BuildContext dialogContext) {
       return Dialog(
-        shape: RoundedRectangleBorder(
-          borderRadius: BorderRadius.circular(16),
-        ),
+        shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(16)),
         child: ErrorContent(
           title: title,
           message: message,
@@ -187,70 +181,3 @@ void showErrorDialog(
     },
   );
 }
-
-// Fonction helper pour afficher l'erreur en bottom sheet
-void showErrorBottomSheet(
-  BuildContext context, {
-  String title = 'Une erreur est survenue',
-  required String message,
-  VoidCallback? onRetry,
-  IconData icon = Icons.error_outline,
-  Color? iconColor,
-  bool isDismissible = true,
-}) {
-  showModalBottomSheet(
-    context: context,
-    isDismissible: isDismissible,
-    enableDrag: isDismissible,
-    shape: const RoundedRectangleBorder(
-      borderRadius: BorderRadius.vertical(top: Radius.circular(20)),
-    ),
-    builder: (BuildContext sheetContext) {
-      return SafeArea(
-        child: Padding(
-          padding: const EdgeInsets.all(16),
-          child: ErrorContent(
-            title: title,
-            message: message,
-            icon: icon,
-            iconColor: iconColor,
-            onRetry: onRetry != null
-                ? () {
-                    Navigator.of(sheetContext).pop();
-                    onRetry();
-                  }
-                : null,
-            onClose: () => Navigator.of(sheetContext).pop(),
-          ),
-        ),
-      );
-    },
-  );
-}
-
-// Fonction helper pour afficher en SnackBar (pour erreurs mineures)
-void showErrorSnackBar(
-  BuildContext context, {
-  required String message,
-  VoidCallback? onRetry,
-  Duration duration = const Duration(seconds: 4),
-}) {
-  ScaffoldMessenger.of(context).showSnackBar(
-    SnackBar(
-      content: Text(message),
-      backgroundColor: Colors.red[400],
-      duration: duration,
-      action: onRetry != null
-          ? SnackBarAction(
-              label: 'Réessayer',
-              textColor: Colors.white,
-              onPressed: onRetry,
-            )
-          : null,
-      behavior: SnackBarBehavior.floating,
-      shape: RoundedRectangleBorder(
-        borderRadius: BorderRadius.circular(10),
-      ),
-    ),
-  );
-}