TF-3651 Support mailto url from OpenPaas

lib/features/composer/presentation/extensions/email_action_type_extension.dart

@@ -33,6 +33,8 @@ extension EmailActionTypeExtension on EmailActionType {
       case EmailActionType.editSendingEmail:
       case EmailActionType.reopenComposerBrowser:
       case EmailActionType.editAsNewEmail:
+      case EmailActionType.composeFromMailtoUri:
+      case EmailActionType.composeFromUnsubscribeMailtoLink:
         return subject;
       default:
         return '';

lib/main/routes/route_utils.dart

@@ -204,6 +204,11 @@ abstract class RouteUtils {
       mapMailto[paramSubject] = subject;
       mapMailto[paramBody] = body;
     } else if (parsedMailToUri?.path == "/$mailtoPrefix" || parsedMailToUri?.path == "/$mailtoPrefix/") {
+      final uriPrefixQueryParam = parsedMailToUri?.queryParameters[uriPrefix] ?? '';
+      final uriFromUriPrefixQueryParam = Uri.tryParse(uriPrefixQueryParam);
+      if (uriFromUriPrefixQueryParam?.queryParameters.isNotEmpty == true) {
+        return parseMapMailtoFromUri(mailtoUri?.split('?uri=').last);
+      }
       final to = {
         ...?parsedMailToUri?.queryParameters[uriPrefix]?.split('$mailtoPrefix:').last.split(ADDRESS_SEPARATOR),
         ...?parsedMailToUri?.queryParameters[paramTo]?.split(ADDRESS_SEPARATOR)

test/main/routes/route_utils_test.dart

@@ -224,5 +224,33 @@ void main() {
         equals(body)
       );
     });
+
+    test(
+      'should parse url with mailto uri '
+      'when the query parameter belongs to the mailto uri',
+    () {
+      // arrange
+      const to = 'to@example.com';
+      const cc1 = 'cc1@example.com', cc2 = 'cc2@example.com';
+      const bcc1 = 'bcc1@example.com', bcc2 = 'bcc2@example.com';
+      const subject = 'Hello';
+      const body = 'Bye';
+      const mailtoUri = 'https://example.com/mailto/'
+        '?uri=mailto:$to'
+        '?subject=$subject'
+        '&cc=$cc1,$cc2'
+        '&bcc=$bcc1,$bcc2'
+        '&body=$body';
+
+      // act
+      final result = RouteUtils.parseMapMailtoFromUri(mailtoUri);
+      
+      // assert
+      expect(result[RouteUtils.paramMailtoAddress], equals(to));
+      expect(result[RouteUtils.paramCc], containsAll([cc1, cc2]));
+      expect(result[RouteUtils.paramBcc], containsAll([bcc1, bcc2]));
+      expect(result[RouteUtils.paramSubject], equals(subject));
+      expect(result[RouteUtils.paramBody], equals(body));
+    });
   });
 }