RuStore support

[PadowYT2]

Added support for RuStore (based on this gist) and removed obsolete apps. This is my first time developing in Dart, so obvioulsy this doesn't work.

The current error is type 'Null' is not a subtype of type 'String', which I have no idea how to debug and where it is coming from. I appreciate if someone knows Dart could help on this.

An another problem, when getting a download link, it is a zip, which has an apk inside of it named file. The problem is, I have no idea how to implement this unfortunately You can replace .zip with .apk and it would work (mentioned on #2081 (comment))

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Closes #1593

[arisudesu]

For some reason, apkUrl can now contain a URL that ends with .zip and gives a ZIP file containing APK, instead of giving APK directly. This may be not supported in Obtainium. For now, replacing .zip extension to .apk in URL reverts RuStore to previous behavior, I don't know for how long it will work though.

[arisudesu]

Example for ru.sberbankmobile:

$ curl -s -X POST 'https://backapi.rustore.ru/applicationData/download-link' -d '{"appId":"462271","firstInstall":true}' -H 'Content-type: application/json' | jq

{
  "code": "OK",
  "message": "OK",
  "body": {
    "appId": 462271,
    "apkUrl": "https://static.rustore.ru/apk/462271/version/2025010912/66a45791-5384-4940-adb5-bca7b01a3f11.zip",
    "versionCode": 2025010912
  },
  "timestamp": "2025-01-26T19:48:53.588472302+03:00"
}

[PadowYT2]

@ImranR98 Any ETA on taking a look at this?

[ImranR98]

Not at the moment. Will take a look at some point.

[ImranR98]

I fixed the bug in this PR. The changes are on my rustore branch. You can either manually copy the changes from that branch into this PR, or you could allow me to push them here by checking "allow edits by maintainers".

[PadowYT2]

I fixed the bug in this PR. The changes are on my rustore branch. You can either manually copy the changes from that branch into this PR, or you could allow me to push them here by checking "allow edits by maintainers".

The checkbox is already checked since the opening of the PR, not sure why you are unable to push yourself, but I have pushed the changes. Will do testing now

[PadowYT2]

Will do testing now

Adding, installing and updating works perfectly. I think there's nothing else to add due to limitations, but perhaps you can add the changelog? whatsNew within the JSON response, it is a string which follows and it uses \n for new lines and sometimes has unicodes (\uXXXX)

EDIT: I have found an issue, while the name is UTF-8, the author isn't and results in random text (not sure how to call it). An example application would be Дневник МЭШ

[ImranR98]

I totally missed the "will do testing" part of your comment and already merged. You could make another PR or I'll make the changes later today.

[PadowYT2]

I totally missed the "will do testing" part of your comment and already merged. You could make another PR or I'll make the changes later today.

Unfortunately I'm not sure how to do neither, I would be happy if you could do it