Failed to get the release date for an old AppGallery app

[StSav012]

Obtainium fails to find the release date for https://appgallery.cloud.huawei.com/appdl/C104450749 and, possibly, other apps published years ago.

Steps to Reproduce:

1. Add an app using this URL: https://appgallery.cloud.huawei.com/appdl/C104450749.
2. Click the Add button.
3. See error: FormatException: Trying to read yy from ru-/d-l/-ap-pd-l/-ap-pl-ic-at-io-n/-ap-k/-32-/3-2d-dd-aa-c6-30-34-75-b9-6d-cb-98-04-da-16-96-4/-16-66-97-26-48-78-4--16-55-e5-a0--e-85-5--46-33--9-34-6--42-66-7a-74-4c-5c at 0 or another beginning.

Investigation

The server redirects to https://appdlc-drru.hispace.dbankcloud.ru/dl/appdl/application/apk/32/32dddaac6303475b96dcb9804da16964/1666972648784-1655e5a0-e855-4633-9346-42667a744c5c.apk?maple=0&trackId=0&distOpEntity=HKS

The app adds numerous dashes due to the lines:

Obtainium/lib/app_sources/huaweiappgallery.dart

Lines 80 to 84 in cbe41de

	var i = 2;
	while (i < tempLen) {
	relDateStrAdj?.insert((i + i ~/ 2 - 1), '-');
	i += 2;
	}

Before that, the app gets the first part of the URL:

Obtainium/lib/app_sources/huaweiappgallery.dart

Lines 76 to 77 in cbe41de

	var relDateStr =
	res.headers['location']?.split('?')[0].split('.').reversed.toList()[1];

Namely,

• res.headers['location'] is https://appdlc-drru.hispace.dbankcloud.ru/dl/appdl/application/apk/32/32dddaac6303475b96dcb9804da16964/1666972648784-1655e5a0-e855-4633-9346-42667a744c5c.apk?maple=0&trackId=0&distOpEntity=HKS (or another host, depending on the load balancer).
• res.headers['location']?.split('?')[0] is https://appdlc-drru.hispace.dbankcloud.ru/dl/appdl/application/apk/32/32dddaac6303475b96dcb9804da16964/1666972648784-1655e5a0-e855-4633-9346-42667a744c5c.apk (or another host, depending on the load balancer).
• res.headers['location']?.split('?')[0].split('.').reversed.toList()[1] is ru/dl/appdl/application/apk/32/32dddaac6303475b96dcb9804da16964/1666972648784-1655e5a0-e855-4633-9346-42667a744c5c (or another beginning, depending on the load balancer).
  See that the latter contains no '.'.

The Solution

Check whether relDateStr contains a '/'.

• If so,

  var relDate = DateTime.fromMillisecondsSinceEpoch(int.parse(relDateStr?.split('/').last.split('-').first));

  Or something like that. It's my first Dart line.
• Otherwise, use the existing code:
  

  Obtainium/lib/app_sources/huaweiappgallery.dart

  Lines 78 to 87 in cbe41de

  	var relDateStrAdj = relDateStr?.split('');
  	var tempLen = relDateStrAdj?.length ?? 0;
  	var i = 2;
  	while (i < tempLen) {
  	relDateStrAdj?.insert((i + i ~/ 2 - 1), '-');
  	i += 2;
  	}
  	var relDate = relDateStrAdj == null
  	? null
  	: DateFormat('yy-MM-dd-HH-mm', 'en_US').parse(relDateStrAdj.join(''));

[ImranR98]

This URL seems to be different from AppGallery pages I've seen before - it leads to a direct download, and https://appgallery.huawei.com/app/C104450749 is empty. It might not be possible to use it since we can't get a valid app ID or release date. Do you have a link to the actual app listing page?

[StSav012]

That seems to mean that the app is geo-restricted. I haven't expected that.

The page I see following https://appgallery.huawei.com/app/C104450749 looks like this:

The page also reads that the app was updated on 10/31/2022. I couldn't find another app that's that old.

I'm unsure if the issue is relevant for anyone but me, then.