fix(server): Handle exposure time correctly (#1432)

mobile/lib/modules/asset_viewer/ui/exif_bottom_sheet.dart

@@ -188,7 +188,7 @@ class ExifBottomSheet extends HookConsumerWidget {
                             ),
                           ),
                           subtitle: Text(
-                            "ƒ/${exifInfo.fNumber}   1/${(1 / (exifInfo.exposureTime ?? 1)).toStringAsFixed(0)}   ${exifInfo.focalLength} mm   ISO${exifInfo.iso} ",
+                            "ƒ/${exifInfo.fNumber}   ${exifInfo.exposureTime}   ${exifInfo.focalLength} mm   ISO${exifInfo.iso} ",
                           ),
                         ),
                     ],

mobile/openapi/doc/ExifResponseDto.md

@@ -22,7 +22,7 @@ Name | Type | Description | Notes
 **fNumber** | **num** |  | [optional] 
 **focalLength** | **num** |  | [optional] 
 **iso** | **num** |  | [optional] 
-**exposureTime** | **num** |  | [optional] 
+**exposureTime** | **String** |  | [optional] 
 **latitude** | **num** |  | [optional] 
 **longitude** | **num** |  | [optional] 
 **city** | **String** |  | [optional] 

mobile/openapi/lib/model/exif_response_dto.dart

@@ -63,7 +63,7 @@ class ExifResponseDto {
 
   num? iso;
 
-  num? exposureTime;
+  String? exposureTime;
 
   num? latitude;
 
@@ -273,9 +273,7 @@ class ExifResponseDto {
         iso: json[r'iso'] == null
             ? null
             : num.parse(json[r'iso'].toString()),
-        exposureTime: json[r'exposureTime'] == null
-            ? null
-            : num.parse(json[r'exposureTime'].toString()),
+        exposureTime: mapValueOfType<String>(json, r'exposureTime'),
         latitude: json[r'latitude'] == null
             ? null
             : num.parse(json[r'latitude'].toString()),

mobile/openapi/test/exif_response_dto_test.dart

@@ -86,7 +86,7 @@ void main() {
       // TODO
     });
 
-    // num exposureTime
+    // String exposureTime
     test('to test the property `exposureTime`', () async {
       // TODO
     });