add export cycles

lib/providers/cycles.dart

@@ -1,6 +1,8 @@
 import 'dart:convert';
 
+import 'package:flutter_downloader/flutter_downloader.dart';
 import 'package:fluttertoast/fluttertoast.dart';
+import 'package:path_provider/path_provider.dart';
 
 import '../config/urls.dart';
 import '../config/user.dart';
@@ -383,4 +385,19 @@ class CyclesProvider extends ChangeNotifier {
     // };
     return result!;
   }
+
+  Future<bool> exportCycles() async {
+    final baseStorage = await getExternalStorageDirectory();
+    final taskId = await FlutterDownloader.enqueue(
+      url: Url.exportCycles,
+      savedDir: baseStorage!.path,
+      headers: {'Authorization': User.token, "Accept": "*"},
+      showNotification: true,
+      openFileFromNotification: true,
+      saveInPublicStorage: true,
+      fileName: "Cycles " + DateTime.now().toString() + ".xlsx",
+    );
+    print(taskId);
+    return true;
+  }
 }