Cannot preview image with file name containing image extension (jpg,..) and mime type is application/octet-stream

Signed-off-by: dab246 <tdvu@linagora.com>

core/lib/presentation/extensions/media_type_extension.dart

@@ -1,6 +1,7 @@
 import 'package:core/data/constants/constant.dart';
 import 'package:core/domain/preview/document_uti.dart';
 import 'package:core/domain/preview/supported_preview_file_types.dart';
+import 'package:core/presentation/extensions/string_extension.dart';
 import 'package:core/presentation/resources/image_paths.dart';
 import 'package:http_parser/http_parser.dart';
 
@@ -38,7 +39,7 @@ extension MediaTypeExtension on MediaType {
       return imagePaths.icFilePptx;
     } else if (isZipFile()) {
       return imagePaths.icFileZip;
-    } else if (isImageFile()) {
+    } else if (isImageSupportedPreview(fileName: fileName)) {
       return imagePaths.icFilePng;
     } else {
       return imagePaths.icFileEPup;
@@ -56,4 +57,11 @@ extension MediaTypeExtension on MediaType {
       mimeType == Constant.textHtmlMimeType ||
       (mimeType == Constant.octetStreamMimeType &&
           fileName?.endsWith(Constant.htmlExtension) == true);
+
+  bool isImageSupportedPreview({required String? fileName}) =>
+      isImageFile() ||
+      (mimeType == Constant.octetStreamMimeType &&
+          fileName != null &&
+          SupportedPreviewFileTypes.imageMimeTypes
+              .contains(fileName.imageMimeType));
 }

core/lib/presentation/extensions/string_extension.dart

@@ -40,4 +40,42 @@ extension StringExtension on String {
   }
 
   String get firstCharacterToUpperCase => isNotEmpty ? this[0].toUpperCase() : '';
+
+  String get fileExtension {
+    int dotIndex = lastIndexOf('.');
+    if (dotIndex == -1 || dotIndex == length - 1) {
+      return '';
+    }
+    return substring(dotIndex + 1);
+  }
+
+  String get imageMimeType {
+    switch (fileExtension.toLowerCase()) {
+      case 'jpg':
+      case 'jpeg':
+        return 'image/jpeg';
+      case 'png':
+        return 'image/png';
+      case 'gif':
+        return 'image/gif';
+      case 'webp':
+        return 'image/webp';
+      case 'svg':
+        return 'image/svg+xml';
+      case 'bmp':
+        return 'image/bmp';
+      case 'ico':
+        return 'image/x-icon';
+      case 'tif':
+      case 'tiff':
+        return 'image/tiff';
+      case 'heic':
+      case 'heif':
+        return 'image/heif';
+      case 'avif':
+        return 'image/avif';
+      default:
+        return 'application/octet-stream'; // Unknown type
+    }
+  }
 }