Hello, Can I use the "prepareUpdateApp" function to customize the update logic?

[lishangjing-spec]

void updateApp() async {
    updateStatus.value = 'updating...';

    String remoteUpdateFolder =
        ProjectManager().appInitModel?.appUpdates?.downloadUrl ?? '';

    if (remoteUpdateFolder.isEmpty) {
      closeDialog();
      return;
    }

    List<FileHashModel?> changedFiles = await updater.prepareUpdateApp(
      remoteUpdateFolder: remoteUpdateFolder,
    );

    if (changedFiles.isNotEmpty) {
      final progressStream = await updater.updateApp(
        remoteUpdateFolder: remoteUpdateFolder,
        changedFiles: changedFiles,
      );

      progressStream.listen(
        (progress) {
          logger.i('download progress: ${progress.receivedBytes}/${progress.totalBytes} KB');
          updateStatus.value = 'downloading...';
          updateProgress.value = progress.receivedBytes / progress.totalBytes;
        },
        onDone: () {
          updateStatus.value = 'restart...';
          updateProgress.value = 1.0;
          updater.restartApp();
        },
        onError: (error) {
          updateStatus.value = 'error: $error';
          closeDialog();
        },
      );
    } else {
      logger.e('empty update');
      closeDialog();
    }
  }

I didn't see any relevant documents or source code using prepareUpdateApp. Although it causes errors when overriding installation in the development environment and makes the application unable to open, in the release environment, it seems to be able to perform the override normally.

I don't know if it can be used.

I hope to receive a reply from the author.

thanks.

[lishangjing-spec]

Why did I do this? It's because I wanted to determine whether to update and whether to force the update through the backend API. I didn't want to rely on app-archive.json. Also, on the UI, I would like to have the option to customize it.

[MarlonJD]

Why do you want to use without app-archive file? You want trigger manually right? Build and archive collectinf hashing for release it will broke your debug release. Even if we get files and hashes for debug it will close connection while updating app. Why do you want to use debug envoriment for update process?

[lishangjing-spec]

There was no expectation to run it in debug mode. It was simply because when I used the DesktopUpdaterController and Widget as described in the documentation, they were functioning properly.

The method prepareUpdateApp is not mentioned in the documentation or in the Example. I'm not sure if it is merely a demo method.

Could we add more explanations in README.md and Example regarding prepareUpdateApp?

[MarlonJD]

prepareUpdateApp function is verifying the hashes of your app between remote hashes (update's hashes). I can add more comment lines for detailed information to inspect in IDE.