add export cycles

lib/config/urls.dart

@@ -31,6 +31,8 @@ class Url {
 
   static const String exportPackages = '$baseUrl/export/packages';
 
+  static const String exportCycles = '$baseUrl/export/cycles';
+
   static String testResults(int id) {
     return '$baseUrl/TestResults?page=$id';
   }

lib/pages/CyclePages/cycle_result_screen.dart

@@ -1,7 +1,9 @@
 import 'package:cssd/config/colors.dart';
+import 'package:permission_handler/permission_handler.dart';
 
 import '../../config/routes.dart';
 
+import '../../providers/auth.dart';
 import '../../providers/connectivity.dart';
 import '../../widgets/CycleScreens/Result/banner.dart';
 import '../../widgets/CycleScreens/Result/data_box.dart';
@@ -266,9 +268,37 @@ class CycleResultFloatingButton extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final userData = Provider.of<Auth>(context, listen: false).user;
     return Row(
       mainAxisAlignment: MainAxisAlignment.end,
       children: <Widget>[
+        if (userData['roles'].contains('Supervisor') ||
+            userData['roles'].contains('Admin'))
+          InkWell(
+            customBorder: CircleBorder(),
+            onTap: () async {
+              var status = await Permission.storage.request();
+              if (status.isGranted) {
+                Provider.of<CyclesProvider>(context, listen: false)
+                    .exportCycles();
+              }
+            },
+            child: Container(
+              padding: EdgeInsets.all(_deviceBlockSize),
+              decoration: BoxDecoration(
+                shape: BoxShape.circle,
+                color: Colors.black,
+              ),
+              child: Icon(
+                Icons.import_export,
+                size: 10 * _deviceBlockSize,
+                color: Colors.white,
+              ),
+            ),
+          ),
+        SizedBox(
+          width: 2 * _deviceBlockSize,
+        ),
         InkWell(
           customBorder: CircleBorder(),
           onTap: () {

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;
+  }
 }