Refactor event type handling and add data management page (options and event types)

em2rp/lib/models/event_type_model.dart

@@ -1,32 +1,30 @@
-import 'package:cloud_firestore/cloud_firestore.dart';
-
-class EventType {
+class EventTypeModel {
   final String id;
   final String name;
   final double defaultPrice;
+  final DateTime createdAt;
 
-  EventType({
+  EventTypeModel({
     required this.id,
     required this.name,
     required this.defaultPrice,
+    required this.createdAt,
   });
 
-  factory EventType.fromFirestore(DocumentSnapshot doc) {
-    Map<String, dynamic> data = doc.data() as Map<String, dynamic>;
-
-    double price = 0.0;
-    final priceData = data['defaultPrice'];
-    if (priceData is num) {
-      price = priceData.toDouble();
-    } else if (priceData is String) {
-      price = double.tryParse(priceData.replaceAll(',', '.')) ?? 0.0;
-    }
-
-    return EventType(
-      id: doc.id,
-      name: data['name'] ?? '',
-      defaultPrice: price,
+  factory EventTypeModel.fromMap(Map<String, dynamic> map, String id) {
+    return EventTypeModel(
+      id: id,
+      name: map['name'] ?? '',
+      defaultPrice: (map['defaultPrice'] ?? 0.0).toDouble(),
+      createdAt: map['createdAt']?.toDate() ?? DateTime.now(),
     );
   }
-}
 
+  Map<String, dynamic> toMap() {
+    return {
+      'name': name,
+      'defaultPrice': defaultPrice,
+      'createdAt': createdAt,
+    };
+  }
+}

em2rp/lib/models/option_model.dart

@@ -1,6 +1,6 @@
-
 class EventOption {
   final String id;
+  final String code; // Nouveau champ code
   final String name;
   final String details;
   final double valMin;
@@ -9,6 +9,7 @@ class EventOption {
 
   EventOption({
     required this.id,
+    required this.code,
     required this.name,
     required this.details,
     required this.valMin,
@@ -19,6 +20,7 @@ class EventOption {
   factory EventOption.fromMap(Map<String, dynamic> map, String id) {
     return EventOption(
       id: id,
+      code: map['code'] ?? id, // Utilise le code ou l'ID en fallback
       name: map['name'] ?? '',
       details: map['details'] ?? '',
       valMin: (map['valMin'] ?? 0.0).toDouble(),
@@ -31,6 +33,7 @@ class EventOption {
 
   Map<String, dynamic> toMap() {
     return {
+      'code': code,
       'name': name,
       'details': details,
       'valMin': valMin,