TF-296 Fix download file on browser

core/lib/data/network/download/download_manager.dart

@@ -1,6 +1,7 @@
 import 'dart:async';
 import 'dart:io';
-
+import 'package:http/http.dart' as http;
+import 'package:universal_html/html.dart' as html;
 import 'package:core/core.dart';
 import 'package:dio/dio.dart';
 
@@ -72,4 +73,31 @@ class DownloadManager {
     }
     return streamController.stream.first;
   }
+
+  Future<bool> downloadFileForWeb(String downloadUrl, String filename, String basicAuth) async {
+    final headerParam = Map<String, String>();
+    headerParam[HttpHeaders.authorizationHeader] = basicAuth;
+    headerParam[HttpHeaders.acceptHeader] = DioClient.jmapHeader;
+
+    http.Response res = await http.get(Uri.parse(downloadUrl), headers: headerParam);
+
+    if (res.statusCode == 200) {
+      final blob = html.Blob([res.bodyBytes]);
+      final url = html.Url.createObjectUrlFromBlob(blob);
+      final anchor = html.document.createElement('a') as html.AnchorElement
+        ..href = url
+        ..style.display = 'none'
+        ..download = filename;
+      html.document.body?.children.add(anchor);
+
+      anchor.click();
+
+      html.document.body?.children.remove(anchor);
+      html.Url.revokeObjectUrl(url);
+
+      return true;
+    }
+
+    return false;
+  }
 }

core/lib/presentation/views/dialog/downloading_file_dialog_builder.dart

@@ -1,6 +1,7 @@
 
 import 'package:core/core.dart';
 import 'package:flutter/cupertino.dart';
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 
 typedef OnCancelDownloadActionClick = void Function();
@@ -57,13 +58,13 @@ class DownloadingFileDialogBuilder {
           ),
         )),
       actions: [
-        TextButton(
-          onPressed: () {
-            if (_onCancelDownloadActionClick != null) {
-              _onCancelDownloadActionClick!();
-            }},
-          child: Text(_actionText, style: TextStyle(fontSize: 17.0, color: AppColor.appColor)),
-        )
+        if (_actionText.isNotEmpty)
+          Padding(
+            padding: EdgeInsets.only(bottom: kIsWeb ? 16 : 0, top: kIsWeb ? 16 : 0),
+            child: TextButton(
+              onPressed: () => _onCancelDownloadActionClick?.call(),
+              child: Text(_actionText, style: TextStyle(fontSize: 17.0, color: AppColor.appColor)),
+            ))
       ],
     );
   }

core/pubspec.yaml

@@ -76,6 +76,8 @@ dependencies:
   # collection
   collection: 1.15.0
 
+  universal_html: 2.0.8
+
 dev_dependencies:
   flutter_test:
     sdk: flutter