Geopackage export: geometriák exportálása dátum szerinti szűréssel

lib/pages/map_survey/presentations/controllers/map_survey_controller.dart

@@ -1895,6 +1895,9 @@ class MapSurveyController extends GetxController implements StyleEditable {
       showGeometryLabels.value = !showGeometryLabels.value;
 
   Future<void> exportProject() async {
+    final since = await _showExportDateDialog();
+    if (since == false) return; // felhasználó megszakította
+
     Get.dialog(
       Center(
         child: Material(
@@ -1932,6 +1935,59 @@ class MapSurveyController extends GetxController implements StyleEditable {
     }
   }
 
+  /// Visszaad: DateTime (szűrt export), null (teljes export), false (mégse)
+  Future<dynamic> _showExportDateDialog() async {
+    return Get.dialog<dynamic>(AlertDialog(
+      title: const Text('Export tartalma'),
+      content: Column(
+        mainAxisSize: MainAxisSize.min,
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          ListTile(
+            leading: const Icon(Icons.all_inclusive),
+            title: const Text('Teljes projekt'),
+            onTap: () => Get.back(result: null),
+          ),
+          ListTile(
+            leading: const Icon(Icons.today),
+            title: const Text('Mai nap'),
+            onTap: () => Get.back(
+                result: DateTime(DateTime.now().year, DateTime.now().month,
+                    DateTime.now().day)),
+          ),
+          ListTile(
+            leading: const Icon(Icons.today),
+            title: const Text('Tegnapi nap'),
+            onTap: () => Get.back(
+                result: DateTime(DateTime.now().year, DateTime.now().month,
+                        DateTime.now().day)
+                    .subtract(const Duration(days: 1))),
+          ),
+          ListTile(
+            leading: const Icon(Icons.date_range),
+            title: const Text('Dátum kiválasztása...'),
+            onTap: () async {
+              Get.back();
+              final picked = await showDatePicker(
+                context: Get.context!,
+                initialDate: DateTime.now().subtract(const Duration(days: 7)),
+                firstDate: DateTime(2024),
+                lastDate: DateTime.now(),
+              );
+              if (picked != null) Get.back(result: picked);
+            },
+          ),
+        ],
+      ),
+      actions: [
+        TextButton(
+          onPressed: () => Get.back(result: false),
+          child: const Text('Mégse'),
+        ),
+      ],
+    ));
+  }
+
   void _subscribeToTeamPosition() {
     _teamChannel = Supabase.instance.client
         .channel('public:terepi_seged_device_positions')