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immich/mobile/lib/extensions/asset_extensions.dart
shenlong 086a957a2b
feat(mobile): edit date time & location (#5461)
* chore: text correction

* fix: update activities stat only when the widget is mounted

* feat(mobile): edit date time

* feat(mobile): edit location

* chore(build): update gradle wrapper - 7.6.3

* style: dropdownmenu styling

* style: wrap locationpicker in singlechildscrollview

* test: add unit test for getTZAdjustedTimeAndOffset

* pr changes

---------

Co-authored-by: shalong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>
2023-12-05 13:34:37 -06:00

37 lines
1.2 KiB
Dart

import 'package:immich_mobile/shared/models/asset.dart';
import 'package:timezone/timezone.dart';
extension TZExtension on Asset {
/// Returns the created time of the asset from the exif info (if available) or from
/// the fileCreatedAt field, adjusted to the timezone value from the exif info along with
/// the timezone offset in [Duration]
(DateTime, Duration) getTZAdjustedTimeAndOffset() {
DateTime dt = fileCreatedAt.toLocal();
if (exifInfo?.dateTimeOriginal != null) {
dt = exifInfo!.dateTimeOriginal!;
if (exifInfo?.timeZone != null) {
dt = dt.toUtc();
try {
final location = getLocation(exifInfo!.timeZone!);
dt = TZDateTime.from(dt, location);
} on LocationNotFoundException {
RegExp re = RegExp(
r'^utc(?:([+-]\d{1,2})(?::(\d{2}))?)?$',
caseSensitive: false,
);
final m = re.firstMatch(exifInfo!.timeZone!);
if (m != null) {
final duration = Duration(
hours: int.parse(m.group(1) ?? '0'),
minutes: int.parse(m.group(2) ?? '0'),
);
dt = dt.add(duration);
return (dt, duration);
}
}
}
}
return (dt, dt.timeZoneOffset);
}
}