Build ZIM file integrity checker

[kelson42]

The libzim provides a ZIM file integrity checker which is based on a checksum. See https://libzim.readthedocs.io/en/latest/api/classzim_1_1Archive.html#_CPPv4NK3zim7Archive5checkEv

We should provide a solution for the user to check his ZIM file. This feature should provide a modal overlay with an endless progressbar. The feature should somehow be provided from the content item in the local library.

[kelson42]

We should:

• Provide first a mockup
• Find a solution for the custom apps too
• Consider building this as part of the diagnostic (verify all ZIM in the local library)

[MohitMaliFtechiz]

@kelson42 For Kiwix app, we can give this feature on the menu of Local Library, and when scanning the ZIM file, it shows a dialog with all the ZIM files(names) available in Local Library and shows the progressBar(round progressBar as we have on FileTransfer screen) in front of the currently validating ZIM file. If the check is successful, then it will show a green check icon; if it fails, it will show a red close icon(which indicates that the check is unsuccessful).

For the Custom app, we can give this option in the sidebar or probably in the "Help" screen. So that user can validate their current ZIM file. "Help" screen could be good for this option, as it helps the user in validating the ZIM file.

Consider building this as part of the diagnostic (verify all ZIM in the local library)

Good thinking, by doing so, we can know about their ZIM files, whether the ZIM files are valid or not. It will avoid extra effort in debugging if the ZIM file is not valid.

It will take time to check all the ZIM files while building the diagnostic report if the user did not validate the ZIM file before sending the diagnostic report. Should we allow users to skip this operation when building the diagnostic report? I mean, giving a checkbox if the user selects it validates all the ZIM files and includes them in the report(We can inform users that this checkbox will validate thier ZIM file.). Otherwise, simply send the list of ZIM files without validating. Since in Kiwix app takes more time if there are many large ZIM files available.

@kelson42 What do you think?

[kelson42]

@MohitMaliFtechiz What you propose does not seem to allow which ZIM file to check, which is a deal breaker. We should probably do like for the "delete" and "share" ZIM approach. I like the idea of a small icon show permanently in the book list item. The fullcheck should be part of the diagnostic as well, and this should be good enough for the custom apps.

[MohitMaliFtechiz]

@MohitMaliFtechiz What you propose does not seem to allow which ZIM file to check, which is a deal breaker. We should probably do like for the "delete" and "share" ZIM approach.

It is a better approach, thank you for highlighting this. I will do it like this.