TF-2602 Set charset for attachment with mimeType=text/plain when sent email on web

core/lib/utils/file_utils.dart

@@ -9,7 +9,7 @@ import 'package:flutter_charset_detector/flutter_charset_detector.dart';
 import 'package:path_provider/path_provider.dart';
 
 class FileUtils {
-  static const String DEFAULT_CHARSET = 'UTF-8';
+  static const String DEFAULT_CHARSET = 'uft-8';
   static const String TEXT_PLAIN_MIME_TYPE = 'text/plain';
 
   Future<String> _getInternalStorageDirPath({
@@ -139,14 +139,13 @@ class FileUtils {
     }
   }
 
-  Future<String> getFileCharset(String filePath) async {
+  Future<String> getCharsetFromBytes(Uint8List bytes) async {
     try {
-      final file = File(filePath);
-      final decodingResult = await CharsetDetector.autoDecode(file.readAsBytesSync());
-      logError('FileUtils::getFileCharset: FILE_CHARSET = ${decodingResult.charset}');
-      return decodingResult.charset;
+      final decodedResult = await CharsetDetector.autoDecode(bytes);
+      log('FileUtils::getCharsetFromBytes: FILE_CHARSET = ${decodedResult.charset}');
+      return decodedResult.charset;
     } catch (e) {
-      logError('FileUtils::getFileCharset: Exception: $e');
+      logError('FileUtils::getCharsetFromBytes: Exception: $e');
       return DEFAULT_CHARSET;
     }
   }

core/lib/utils/web_renderer/canvas_kit_web.dart

@@ -1,4 +1,4 @@
-import 'dart:js' as js;
+import 'package:universal_html/js.dart' as js;
 
 /// Whether the CanvasKit renderer is being used on web.
 ///

core/pubspec.lock

@@ -330,10 +330,10 @@ packages:
     dependency: "direct main"
     description:
       name: flutter_charset_detector
-      sha256: "45de8a4b4255c1ea850a30955e7456091899ed4ff8b75593e14ec59f629b4b56"
+      sha256: "5d4796d43dac2f37e14149b0f0c676fa08e8eb1ada8e99342a838d971d2fb9b1"
       url: "https://pub.dev"
     source: hosted
-    version: "2.0.0"
+    version: "3.0.0"
   flutter_charset_detector_android:
     dependency: transitive
     description:
@@ -342,14 +342,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.0.1"
-  flutter_charset_detector_ios:
+  flutter_charset_detector_darwin:
     dependency: transitive
     description:
-      name: flutter_charset_detector_ios
-      sha256: e0e2c7b819cd1f7c9a50da94bf7f0e6d7a095eb64e81196ec758e77793903d43
+      name: flutter_charset_detector_darwin
+      sha256: d17c1847366a0501449d95d18a43417585841afe10200ceefb4422e6b7fccefb
       url: "https://pub.dev"
     source: hosted
-    version: "1.0.2"
+    version: "1.0.0"
   flutter_charset_detector_platform_interface:
     dependency: transitive
     description:
@@ -358,6 +358,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.0.0"
+  flutter_charset_detector_web:
+    dependency: transitive
+    description:
+      name: flutter_charset_detector_web
+      sha256: d8495115abada771c75f9395aae3e5809ffd506e8fc8f62b403ae11fc29e1d2b
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.2"
   flutter_image_compress:
     dependency: "direct main"
     description:

core/pubspec.yaml

@@ -79,7 +79,7 @@ dependencies:
 
   fk_user_agent: 2.1.0
 
-  flutter_charset_detector: 2.0.0
+  flutter_charset_detector: 3.0.0
 
 dev_dependencies:
   flutter_test: